(diesel) scrubber sweeper operator...

M20

*331410*

331410Rev. 16 (5-2016)

(Diesel)

Scrubber−SweeperOperator Manual

North America / International

The Safe Scrubbing Alternative�

ES� Extended Scrub SystemTennantTrue� Parts

Hygenic� Fully Cleanable TanksFloorSmart� Integrated Cleaning System

IRIS� a Tennant Technology

�

For the latest Parts manuals and otherlanguage Operator manuals, visit:

www.tennantco.com/manuals

INTRODUCTION

This manual is furnished with each new model. It provides necessary operation and maintenance instructions.

Read this manual completely and understand the machine before operating or servicing it.

This machine will provide excellent service. However, the best results will be obtained at minimum costs if:

� The machine is operated with reasonable care.

� The machine is maintained regularly - per the machine maintenance instructions provided.

� The machine is maintained with manufacturer supplied or equivalent parts.

Model No. −

Serial No. −

Installation Date −

Please fill out at time of installation

for future reference.

MACHINE DATAPROTECT THE ENVIRONMENT

Please dispose of packagingmaterials, used componentssuch as batteries and fluids inan environmentally safe wayaccording to local wastedisposal regulations.

Always remember to recycle.

INTENDED USE

The M20 is an industrial rider machine designed to sweep/scrub hard surfaces (concrete, asphalt, stone, synthetic,etc). Typical applications include industrial warehouses, manufacturing facilities, distribution facilities, stadiums,arenas, convention centers, parking facilities, transportation terminals, and construction sites. Do not use thismachine on soil, grass, artificial turf, or carpeted surfaces. This machine can be used both indoors and outdoors, butensure there is adequate ventilation if used indoors. This machine is not intended for use on public roadways. Do notuse this machine other than described in this Operator Manual.

Tennant CompanyPO Box 1452Minneapolis, MN 55440Phone: (800) 553−8033 or (763) 513−2850www.tennantco.com

CALIFORNIA PROPOSITION 65 WARNING: Engine exhaust from this product contains chemicals known to the State of California to cause cancer,birth defects, or other reproductive harm.

Thermo−Sentry, Touch−N−Go, 1−STEP, Clean−Wedge, Variable Drain Valve, EasyOpen, Grip−n−Go, MaxPro, Dura−Track, SmartRelease, InstantAccess, Duramer, FaST−PAK, ErgoSpace, Insta−Fit and Lower Total Cost of Ownership are trademarks of Tennant Company.

Specifications and parts are subject to change without notice.

Original Instructions, copyright � 2006 − 2016 TENNANT Company, Printed in U.S.A.

CONTENTS

1M20 Diesel 331410 (5−2015)

CONTENTS

PageImportant Safety Instructions − Save These

Instructions 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . .Operation 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Machine Components 7. . . . . . . . . . . . . . . . . .Controls And Instruments 8. . . . . . . . . . . . . . .Touch Panel 9. . . . . . . . . . . . . . . . . . . . . . . . . .Symbol Definitions 10. . . . . . . . . . . . . . . . . . . . .Operation Of Controls 11. . . . . . . . . . . . . . . . . .

Charging System Indicator 11. . . . . . . . . . .Engine Oil Pressure Indicator 11. . . . . . . .Check Engine Indicator

(S/N 000000−002885) 11. . . . . . . . . . . .Glow Plug Light (Preheat) 11. . . . . . . . . . . .Parking Brake Indicator (Option) 11. . . . . .Setting The Engine Speed 12. . . . . . . . . . .Side Brush (Option) 12. . . . . . . . . . . . . . . . .Fuel Indicator 12. . . . . . . . . . . . . . . . . . . . . .Hour Meter 13. . . . . . . . . . . . . . . . . . . . . . . .Supervisor Control Buttons 13. . . . . . . . . . .Operating Lights 13. . . . . . . . . . . . . . . . . . . .Hazard Light (Option) 13. . . . . . . . . . . . . . .Operator Seat 14. . . . . . . . . . . . . . . . . . . . . .Seat Belts 14. . . . . . . . . . . . . . . . . . . . . . . . .Steering Column Tilt Knob 14. . . . . . . . . . .Brake Pedal 15. . . . . . . . . . . . . . . . . . . . . . .Parking Brake Pedal 15. . . . . . . . . . . . . . . .Directional Pedal 15. . . . . . . . . . . . . . . . . . .Squeegee Protectors (Option) 15. . . . . . . .

How The Machine Works 16. . . . . . . . . . . . . . .Brush Information 17. . . . . . . . . . . . . . . . . . . . .While Operating The Machine 17. . . . . . . . . . .Pre−Operation Checklist 18. . . . . . . . . . . . . . . .Starting The Machine 19. . . . . . . . . . . . . . . . . .Turning Off The Machine 19. . . . . . . . . . . . . . .Filling The Solution Tank 20. . . . . . . . . . . . . . . .Foam Scrubbing (FaST Mode) / Ec−H2o

Scrubbing (Ec−H2o Mode) 20. . . . . . . . . . .Conventional Scrubbing Mode 20. . . . . . . . . . .Es (Extended Scrub) Mode With Auto−Fill 21Es (Extended Scrub) Mode −

Manually Filling Tanks 21. . . . . . . . . . . . . . .Setting Scrub Modes 22. . . . . . . . . . . . . . . . . . .

Setting FaST Mode 22. . . . . . . . . . . . . . . . .Setting Es (Extended Scrub) Mode 22. . . .Setting Ec−H2o Mode 22. . . . . . . . . . . . . . .Setting Brush Pressure 22. . . . . . . . . . . . . .Setting Solution Flow 23. . . . . . . . . . . . . . . .Conventional, FaST, And Ec−H2o

Solution Flow 23. . . . . . . . . . . . . . . . . . . .Es (Extended Scrub) Solution Flow 23. . .

Scrubbing 24. . . . . . . . . . . . . . . . . . . . . . . . . . . . .Double Scrubbing 25. . . . . . . . . . . . . . . . . . . . .Water Pickup Mode (No Scrubbing) 26. . . . . .Sweeping 26. . . . . . . . . . . . . . . . . . . . . . . . . . . . .Emptying The Hopper 28. . . . . . . . . . . . . . . . . .

PageEngaging Hopper Support Pin 29. . . . . . . . . . .Disengaging Hopper Support Pin 29. . . . . . . .Removing The Hopper Dust Filter 30. . . . . . . .Cleaning The Hopper And Debris Screen 31.Draining And Cleaning The Recovery Tank 32Draining The Recovery Tank With

The Drain Hose 32. . . . . . . . . . . . . . . . . . . .Draining The Recovery Tank With

The Drain Plug 34. . . . . . . . . . . . . . . . . . . . .Draining And Cleaning The Solution Tank 35.Fault Indicator(S) 37. . . . . . . . . . . . . . . . . . . . . .Conditions / Warnings 38. . . . . . . . . . . . . . . . . .Options 39. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Spray Nozzle (Option) 39. . . . . . . . . . . . . . .Vacuum Wand (Option) 40. . . . . . . . . . . . . .

Machine Troubleshooting 41. . . . . . . . . . . . . . .Maintenance 43. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Maintenance Chart 44. . . . . . . . . . . . . . . . . . . .Lubrication 46. . . . . . . . . . . . . . . . . . . . . . . . . . .Engine Oil 46. . . . . . . . . . . . . . . . . . . . . . . . . . . .Squeegee Caster Bearings 46. . . . . . . . . . . . .Front Wheel Support Bearing 46. . . . . . . . . . .Steering Cylinder Bearing 46. . . . . . . . . . . . . . .Rear Wheel Bearings 46. . . . . . . . . . . . . . . . . .Hopper Lift Arm Pivots 47. . . . . . . . . . . . . . . . .Hopper Door Pivots 47. . . . . . . . . . . . . . . . . . . .Lift Arm Latch 47. . . . . . . . . . . . . . . . . . . . . . . . .Torque Tubes 47. . . . . . . . . . . . . . . . . . . . . . . . .Hydraulics 48. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Hydraulic Fluid 49. . . . . . . . . . . . . . . . . . . . .Hydraulic Hoses 49. . . . . . . . . . . . . . . . . . . .

Engine 50. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Cooling System 50. . . . . . . . . . . . . . . . . . . .Air Filter 51. . . . . . . . . . . . . . . . . . . . . . . . . . .Fuel Filter 51. . . . . . . . . . . . . . . . . . . . . . . . .Fuel Lines 51. . . . . . . . . . . . . . . . . . . . . . . . .Priming The Fuel System 52. . . . . . . . . . . .Engine Belt 52. . . . . . . . . . . . . . . . . . . . . . . .

Battery 52. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Fuses, Relays, And Circuit Breakers 53. . . . .Relay Panel Fuses And Relays 53. . . . . . . . . .Engine Harness Fuses And Relays 54. . . . . .Circuit Breakers (Ec−H2o) 54. . . . . . . . . . . . . .Cleaning The Hopper Dust Filter 54. . . . . . . . .Thermo−Sentry 55. . . . . . . . . . . . . . . . . . . . . . .Main Brushes 55. . . . . . . . . . . . . . . . . . . . . . . . .

Replacing Or Rotating The Main Brushes 55. . . . . . . . . . . . . . . . . . . . . . . .

Checking The Main Brush Pattern 57. . . .Adjusting The Main Brush Taper 58. . . . . .Adjusting The Main Brush Width 58. . . . . .

Side Brush (Option) 59. . . . . . . . . . . . . . . . . . . .Replacing The Side Brush 59. . . . . . . . . . .

CONTENTS

M20 Diesel 331410 (3−2013)2

PageFaST System 60. . . . . . . . . . . . . . . . . . . . . . . . . .

Replacing The FaST−Pak Carton 60. . . . .Cleaning The FaST Supply Hose

Connector 61. . . . . . . . . . . . . . . . . . . . . .Cleaning The FaST System

Filter Screen 61. . . . . . . . . . . . . . . . . . . . .Cleaning The FaST System Air Pump

Filter (S/N 000000 − 002532) 61. . . . . .Replacing The FaST System Filters

(S/N 002533− ) 61. . . . . . . . . . . . .Ec−H2o Module Flush Procedure 62. . . . . . . .

Cleaning The Ec−H2o Filter Screen 63. . .Squeegee Blades 64. . . . . . . . . . . . . . . . . . . . . .

Replacing (Or Rotating) The Rear Squeegee Blades 64. . . . . . . . . . . . . . . .

Replacing Or Rotating The Side Squeegee Blades 66. . . . . . . . . . . . . . . .

Replacing The Side Brush Squeegee Blade (S/N 000000−003076) (Option) 68

Replacing Or Adjusting The Side Brush Squeegee Blade (S/N 003077− )

(Option) 69. . . . . . . . . . . . . . . . . . . . .Leveling The Rear Squeegee 70. . . . . . . . .Adjusting The Rear Squeegee Blade

Deflection 71. . . . . . . . . . . . . . . . . . . . . . .Skirts And Seals 72. . . . . . . . . . . . . . . . . . . . . . .Scrub Head Skirt 72. . . . . . . . . . . . . . . . . . . . . .Recovery Tank Seal 72. . . . . . . . . . . . . . . . . . .Solution Tank Seals 72. . . . . . . . . . . . . . . . . . . .Brakes And Tires 73. . . . . . . . . . . . . . . . . . . . . .

Brakes 73. . . . . . . . . . . . . . . . . . . . . . . . . . . .Tires 73. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Front Wheel 73. . . . . . . . . . . . . . . . . . . . . . .

Propelling Motor 73. . . . . . . . . . . . . . . . . . . . . . .Pushing, Towing, And Transporting

The Machine 74. . . . . . . . . . . . . . . . . . . . . . .Pushing Or Towing The Machine 74. . . . . .Transporting The Machine 74. . . . . . . . . . .

Machine Jacking 76. . . . . . . . . . . . . . . . . . . . . .Storage Information 76. . . . . . . . . . . . . . . . . . . .

Freeze Protection (Machines Without Ec−H2o System) 77. . . . . . . . . . . . . . . .

Freeze Protection (Machines With Ec−H2o System) 77. . . . . . . . . . . . . . . .

Priming The Ec−H2o System 79. . . . . . . . .Specifications 80. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

General Machine Dimensions/Capacities 80.General Machine Performance 80. . . . . . . . . .Hydraulic System 80. . . . . . . . . . . . . . . . . . . . . .Steering 81. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Power Type 81. . . . . . . . . . . . . . . . . . . . . . . . . . . .Tires 81. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .FaST System 82. . . . . . . . . . . . . . . . . . . . . . . . . .Ec−H2o System 82. . . . . . . . . . . . . . . . . . . . . . .Machine Dimensions 83. . . . . . . . . . . . . . . . . . .

Index 84. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SAFETY PRECAUTIONS

3M20 Diesel 331410 (10−2015)

IMPORTANT SAFETY INSTRUCTIONS − SAVE THESE INSTRUCTIONS

The following precautions are used throughoutthis manual as indicated in their description:

WARNING: To warn of hazards orunsafe practices that could result insevere personal injury or death.

CAUTION: To warn of unsafe practicesthat could result in minor or moderatepersonal injury.

FOR SAFETY: To identify actions that must befollowed for safe operation of equipment.

The following information signals potentiallydangerous conditions to the operator. Know whenthese conditions can exist. Locate all safetydevices on the machine. Report machinedamage or faulty operation immediately.

WARNING: Flammable materials cancause an explosion or fire. Do not useflammable materials in tank.

WARNING: Flammable materials orreactive metals can cause an explosionor fire. Do not pickup.

WARNING: Moving belt and fan. Keepaway.

WARNING: Engine emits toxic gases.Serious injury or death can result.Provide adequate ventilation.

WARNING: Raised hopper may fall.Engage hopper support pin.

WARNING: Lift arm pinch point. Stayclear of hopper lift arms.

WARNING: Burn hazard. Hot surface. DoNOT touch.

WARNING: This machine containschemicals known to the State ofCalifornia to cause cancer, birth defects,or other reproductive harm.

This machine may be equipped withtechnology that automatically communicatesover the cellular network. If this machine willbe operated where cell phone use is restrictedbecause of concerns related to equipmentinterference, please contact a Tennantrepresentative for information on how todisable the cellular communicationfunctionality.

FOR SAFETY:

1. Do not operate machine:− Unless trained and authorized.− Unless operator manual is read and

understood.− Under the influence of alcohol or

drugs.− While using a cell phone or other

types of electronic devices.− Unless mentally and physically

capable of following machineinstructions.

− If it is not in proper operatingcondition.

− In areas where flammablevapors/liquids or combustible dustsare present.

− In areas that are too dark to safely seethe controls or operate the machineunless operating / headlights areturned on.

− In areas with possible falling objectsunless equipped with overhead guard.

2. Before starting machine:− Check machine for fluid leaks.− Keep sparks and open flame away

from refueling area.− Make sure all safety devices are in

place and operate properly.− Check brakes and steering for proper

operation.

3. When starting machine:− Keep foot on brake and directional

pedal in neutral.

SAFETY PRECAUTIONS

M20 Diesel 331410 (3−2013)4

4. When using machine:− Use only as described in this manual.− Do not pick up burning or smoking

debris, such as cigarettes, matches, orhot ashes.

− Use brakes to stop machine.− Go slow on inclines and slippery

surfaces.− Reduce speed when turning.− Keep all parts of body inside operator

station while machine is moving.− Use care when reversing machine.− Move machine with care when hopper

is raised.− Make sure adequate clearance is

available before raising hopper.− Do not raise hopper when machine is

on an incline.− Never allow children to play on or

around machine.− Do not carry passengers on machine.− Always follow safety and traffic rules.− Report machine damage or faulty

operation immediately.− Follow mixing, handling and disposal

instructions on chemical containers.− Follow safety guidlines concerning

wet floors.

5. Before leaving or servicing machine:− Do not park near combustible

materials, dusts, gases, or liquids.− Stop on level surface.− Set parking brake.− Turn off machine and remove key.

6. When servicing machine:− All work must be done with sufficient

lighting and visibility.− Avoid moving parts. Do not wear loose

clothing, jewelry and secure long hair.− Block machine tires before jacking

machine up.− Jack machine up at designated

locations only. Support machine withjack stands.

− Use hoist or jack that will support theweight of the machine.

− Do not power spray or hose offmachine near electrical components.

− Disconnect battery connections beforeworking on machine.

− Avoid contact with battery acid.− Avoid contact with hot engine coolant.− Do not remove cap from radiator when

engine is hot.− Allow engine to cool.− Keep flames and sparks away from

fuel system service area. Keep areawell ventilated.

− Use cardboard to locate leakinghydraulic fluid under pressure.

− All repairs must be performed by atrained service mechanic.

− Do not modify the machine from itsoriginal design.

− Use Tennant supplied or approvedreplacement parts.

− Wear personal protective equipmentas needed and where recommended inthis manual.

For Safety: wear hearing protection.

For Safety: wear protective gloves.

For Safety: wear eye protection.

For Safety: wear protective dust mask.

7. When loading/unloading machineonto/off truck or trailer:− Drain tanks before loading machine.− Lower scrub head and squeegee

before tying down machine.− Empty debris hopper before loading

machine.− Turn off machine and remove key.− Use ramp, truck or trailer that will

support the weight of the machine andoperator.

− Use winch. Do not drive the machineonto/off the truck or trailer unless theload height is 380 mm (15 in) or lessfrom the ground.

− Set parking brake after machine isloaded.

− Block machine tires.− Tie machine down to truck or trailer.

SAFETY PRECAUTIONS

5M20 Diesel 331410 (9−06)

The following safety labels are mounted on themachine in the locations indicated. If these or anylabels become damaged or illegible, install a newlabel in its place.

EMISSIONS LABEL − Located on theside of the operator compartment.

FOR SAFETY LABEL −Located on the side of theoperator compartment.

FLAMMABLE SPILLS LABEL −Located on the side of theoperator compartment.

HOPPER LIFT ARMS LABEL −Located on both hopper lift arms.

SAFETY PRECAUTIONS

M20 Diesel 331410 (3−07)6

FAN AND BELT LABEL −Located on enginecompartment panel.

FLAMMABLE MATERIALSLABEL − Located next tothe solution tank coversand on the detergent tank.

HOT SURFACE LABEL − Located onthe side of the bumper, on theexhaust shield, and on the hydraulicreservoir.

RAISED HOPPER LABEL − Locatedon both hopper lift arms.

OPERATION

7M20 Diesel 331410 (4−10)

OPERATION

MACHINE COMPONENTS

C

F

IJ

B

A

E

H

N

O

P

D

K

Q

R

T

G

LM

S

A. Instrument panelB. Front shroudC. HeadlightsD. Side brush (option)E. Side squeegeeF. Scrub head access doorG. Fuel tankH. Seat shroudI. FaST carton, or ES detergent tank

compartment, or ec−H2O System Module compartment (option)

J. Solution tank cover

K. Operator seatL. Audible backup alarm (option)M. TaillightsN. Recovery tank drain hoseO. Recovery tank coverP. Solution tank drain hoseQ. HopperR. Rear squeegeeS. Hopper safety pinT. Engine cover

OPERATION

8 M20 Diesel 331410 (4−10)

CONTROLS AND INSTRUMENTS

B

I

H

FE

L M

G

KA

C

D

J

N

A. Steering wheelB. Ignition switchC. Horn buttonD. Steering column tilt knobE. Directional pedalF. Brake pedalG. Parking brake pedalH. Hopper door open / close switchI. Hopper raise / lower switchJ. Touch panelK. Operating / Hazard Lights switchL. Spray nozzle switch (option)M. Engine indicator lightsN. ec−H2O system indicator light (option)

OPERATION

9M20 Diesel 331410 (4−10)

TOUCH PANEL

H

C

G

A

N

JE

B

D

FIK

LM

O

P

A. Fault indicator lightB. Hour meter / fuel indicator / fault code

indicatorC. 1−STEP sweep buttonD. 1−STEP scrub buttonE. Scrub vacuum fan / squeegee buttonF. ES (Extended Scrub) button (option)G. FaST button (option)ec−H2O button (option)H. Solution increase button (+)I. Solution decrease button (−)J. Brush pressure increase button (+)K. Brush pressure decrease button (−)L. Filter shaker buttonM. Sweep vacuum fan buttonN. Side brush button (option)O. Engine speed buttonP. Supervisor control buttons

OPERATION

10 M20 Diesel 331410 (4−10)

SYMBOL DEFINITIONS

These symbols are usd on the machine to identifycontrols, displays, and features.

Hazard light Engine speed

Operating lights Side brush

Spray nozzle Main brush pressure

Hopper door open Solution flow

Hopper door close Increase

Hopper raise Decrease

Hopper lower Charging system

Fault indicator Engine oil pressure (000000−002885)

Filter shaker Engine oil pressure (002886− )

Sweep vac fan Glow plugs (preheat − diesel only)

Scrub vac fan/squeegee Horn

1−STEP sweep Jack point

1−STEP scrub Diesel fuel only

ES (extended scrub) Parking Brake (002886− )

FaST (foam scrubbing) Check engine (000000−002885)

ec−H2O (option)

OPERATION

11M20 Diesel 331410 (5−09)

OPERATION OF CONTROLS

CHARGING SYSTEM INDICATOR

The Charging system indicator comes on whenthe alternator is not operating within the normalrange. If this indicator comes on, stop themachine immediately and correct the problem.

ENGINE OIL PRESSURE INDICATOR

The Engine oil pressure indicator comes on whenthe engine oil pressure falls below the normaloperating pressure. If this indicator comes on,stop the machine immediately and correct theproblem.

CHECK ENGINE INDICATOR(S/N 000000−002885)

The Check engine indicator comes on when theengine control system detects a fault duringmachine operation.

If this indicator comes on, contact a Tennantservice representative.

GLOW PLUG LIGHT (PREHEAT)

The Glow plug light comes on when the igntitionswitch is turned counterclockwise to the preheatposition. The light will stay on when the key isheld in this position.

PARKING BRAKE INDICATOR (OPTION)

The parking brake indicator comes on when theparking brake is engaged.

OPERATION

12 M20 Diesel 331410 (9−06)

SETTING THE ENGINE SPEED

The engine speed is controlled automaticallywhen either the 1−STEP Scrub button or 1−STEPSweep button is pressed. When not sweeping orscrubbing, press the Engine Speed button toincrease the engine RPM for increased travelspeed. Press the Engine Speed button again toreduce the engine RPM. The two lights above thebutton indicate engine speed setting. When onelight is lit the engine is in the low setting. Whentwo lights are lit the engine is in the high setting.

SIDE BRUSH (OPTION)

The side brush allows users to sweep or scrubdifficult to reach corners and areas near walls.The side brush also widens the scrubbing/sweeping path.

With the 1−STEP Scrub button or 1−STEP Sweepbutton activated, press the Side brush button tolower and start the side brush. The light next tothe button will come on. When finished using theside brush, press the button again to raise andstop the side brush. The light next to the buttonwill turn off. The machine will default to the lastsetting used when it is powered on or off.

FUEL INDICATOR

The Fuel indicator displays the amount of fuel leftin the tank. The fault indicator will flash and a lowfuel message will appear when the tank is nearempty.

OPERATION

13M20 Diesel 331410 (9−06)

HOUR METER

The Hour meter records the hours the machinewas operated. Use this information to determinemachine service intervals.

SUPERVISOR CONTROL BUTTONS

The Supervisor Control buttons are for accessingthe configuration and diagnostic modes. Onlyproperly trained service personnel and TENNANTrepresentatives should access these modes.

OPERATING LIGHTS

Push the top of the Operating / hazard light switchto turn on the headlights and taillights. Return thelight switch to the center position to turn off thelights.

HAZARD LIGHT (OPTION)

Press the bottom of the Operating / hazard lightswitch to turn on the hazard light, headlights, andtaillights. Return the light switch to the centerposition to turn off the lights.

OPERATION

14 M20 Diesel 331410 (9−06)

OPERATOR SEAT

The operator seat has three adjustments:backrest angle, operator weight, and front toback.

The backrest adjustment knob adjusts the angleof the backrest.

Increase angle: Turn the angle adjustment knobcounterclockwise.

Decrease angle: Turn the angle adjustment knobclockwise.

The weight adjustment knob controls the firmnessof the operator seat.

Increase firmness: Turn the weight adjustmentknob clockwise.

Decrease firmness: Turn the weight adjustmentknob counterclockwise.

Use the gauge next to the weight adjustment knobto help determine seat firmness for the operator.

The front−to−back adjustment lever adjusts theseat position.

Adjust: Pull the lever out and slide the seat to thedesired position. Release the lever to lock theseat into place.

SEAT BELTS

Always fasten and adjust the seat belts beforeoperating the machine.

STEERING COLUMN TILT KNOB

1. Pull the Steering column tilt knob and adjustthe steering column to the desired height.

2. Release the Steering column tilt handle.

OPERATION

15M20 Diesel 331410 (9−06)

BRAKE PEDAL

Press the Brake pedal to stop the machine.

PARKING BRAKE PEDAL

Press the Brake pedal down as far as possibleand use toe to lock the Parking brake pedal intoplace. Press the Brake pedal to release theparking brake. The Parking brake pedal will returnto the unlocked position.

DIRECTIONAL PEDAL

Press the top of the Directional pedal to moveforward and the bottom of the pedal to movebackward. The backup lights will come on whenthe machine is in reverse. The pedal returns tothe neutral position when it is released.

NOTE: An audible alarm will sound and thebackup light will flash when backing the machine ifequipped with the optional backup alarm.

SQUEEGEE PROTECTORS (OPTION)

The rear and side squeegee protectors helpprotect the rear squeegee from being damaged.

To engage the rear squeegee protector, pull thepin, lower the protector bar, and reinsert the pin.

OPERATION

16 M20 Diesel 331410 (5−2016)

HOW THE MACHINE WORKS

This machine can effectively scrub or sweep dirtyfloors. The 1−STEP Scrub button and 1−STEPSweep button make it possible to immediatelybegin scrubbing or sweeping.

The 1−STEP Sweep button operates all the drysweeping functions (without scrubbing). The1−STEP Scrub button operates all the scrubbingfunctions. (The machine also sweeps whilescrubbing).

When in the conventional Scrub mode, a waterand detergent mixture is used to scrub the floor.

When in the optional FaST (Foam scrubbing)mode, the FaST scrubbing system mixes theFaST−PAK concentrate with a small amount ofwater, creating a large volume of expanded wetfoam. The FaST system can be used with alldouble scrubbing and heavy duty scrubbingapplications.

When in the optional ES (Extended Scrub) mode,the dirty solution in the recovery tank is filteredthrough the ES system and returned to thesolution tank for reuse. Detergent is then injectedinto the returned solution to revitalize the cleaningcapability of the solution.

When in the optional ec−H2O (electricallyconverted water) mode, normal water passesthrough a module where it is oxygenated andcharged with an electric current. The electricallyconverted water changes into a blended acidicand alkaline solution forming a neutral pH cleaner.The converted water attacks the dirt, breaks it intosmaller particles, and pulls it off the floor surfaceallowing the machine to easily scrub away thesuspended soil. The converted water then returnsto normal water in the recovery tank. The ec−H2Osystem can be used while double scrubbing.

OPERATION

17M20 Diesel 331410 (3−2013)

BRUSH INFORMATION

For best results, use the correct brush type for thecleaning application. Listed below are the brushesand the applications for which each is best suited.

NOTE: The amount and type of soilage play animportant role in determining the type of brushesto use. Contact a Tennant representative forspecific recommendations.

PolyPro brush − Heavy duty polypropylenebristles provide a more aggressive cleaningperformance and can more easily lift compacteddirt, debris, and sand while offering excellentscrubbing performance.

Polypropylene brush − General purposepolypropylene bristles lift lightly compacted dirtwithout scuffing high-gloss coated floors.

Polyester brush − Softer general purposepolyester bristles lift light debris while sweepingand gently clean while scrubbing. Perfect forsensitive floor surfaces. Polyester does notabsorb water so it is preferred over Nylon in wetapplications.

Super AB brush − Nylon fiber impregnated withabrasive grit to remove stains and compacted dirt.Aggressive action on any surface. Performs wellon buildup, grease, or tire marks.

WHILE OPERATING THE MACHINE

Pick up oversized debris before scrubbing orsweeping. Pick up wire, string, twine, large piecesof wood, or any other debris that could becomewrapped around or tangled in the brushes.

Drive as straight a path as possible. Avoidbumping into posts or scraping the sides of themachine. Overlap the scrub/sweep paths byseveral centimeters (a few inches).

Avoid turning the steering wheel too sharply whenthe machine is in motion. The machine is veryresponsive to the movement of the steering wheel.Avoid sudden turns, except in emergencies.

Adjust the machine speed, brush pressure, andsolution flow as required when scrubbing. Use thelowest brush pressure and solution flow settingsfor best performance. If the machine is equippedwith the FaST or ec−H2O system, use the FaSTor ec−H2O system for the best scrubbing results.

Keep the machine moving to prevent damagingfloor finishes.

If poor cleaning performance is observed, stopcleaning and refer to MACHINETROUBLESHOOTING in this manual.

Perform the Daily Maintenance Procedures aftereach use (see MACHINE MAINTENANCE in thismanual).

Drive the machine slowly on inclines. Use thebrake pedal to control machine speed ondescending inclines. Scrub with the machine upinclines rather than down inclines.

FOR SAFETY: When using machine, go slowlyon inclines and slippery surfaces.

Do not operate machine in areas where theambient temperature is above 43� C (110� F). Donot operate scrubbing functions in areas wherethe ambient temperature is below freezing 0� C(32� F).

The maximum rated incline for scrubbing with themachine is 14%. The maximum rated inclineduring transport of the machine is 18%.

OPERATION

18 M20 Diesel 331410 (3−2013)

PRE−OPERATION CHECKLIST

� Check the hydraulic fluid level.

� Check the fuel level.

� Check the machine for fluid leaks.

� Check the condition of the main brushes.Remove string, banding, plastic wrap, or otherdebris wrapped around the brushes.

� Check the main brush compartment rightskirts, seals, and squeegee for damage andwear.

� Side Brush Option: Check the condition of thebrush. Remove string, banding, plastic wrap,or other debris wrapped around the brush.

� Side Brush Option: Check the condition of theside brush skirt or squeegee.

� Check the radiator and hydraulic cooler finsfor debris.

� Check the engine coolant level.

� Check the engine oil level.

� Check the main brush compartment left skirts,seals, and squeegee for damage and wear.

� Check the left solution tank cover seal fordamage and wear.

� Check the recovery tank cover seal fordamage and wear.

� Clean the vacuum fan debris filter.

� Drain and clean the recovery tank.

� ES Option: Drain and clean the solution tank,float sensor, and ES filter.

� Check the right solution tank cover seal fordamage and wear.

� Check the condition of the hopper dust filterand seals.

� Clean the hopper and the debris screen.

� Check the squeegee hose for debris orblockage.

� Check the squeegees for damage, wear, anddeflection adjustment.

� FaST Scrubbing: Check the FaST−PAKconcentrate agent level. Replace carton asneeded. See the INSTALLING THEFaST−PAK CARTON section of the manual.

� FaST Scrubbing: Ensure all conventionalcleaning agents are drained and rinsed fromthe solution tank.

� FaST Scrubbing: Ensure the solution tank isfilled with clear cool water only.

� Check the headlights, taillights, and safetylights.

� Check the brakes and steering for properoperation.

� Check the service records to determinemaintenance requirements.

OPERATION

19M20 Diesel 331410 (3−2013)

STARTING THE MACHINE

1. Sit in the operator seat and press the brakepedal or set the parking brake.

FOR SAFETY: When starting machine, keepfoot on brake and directional pedal in neutral.

2. Turn the key counterclockwise. The glow pluglight will come on. Hold the key in this positionfor 15 to 30 seconds, depending on weatherconditions. Colder weather requires longertime.

3. Turn the key clockwise to start the engine.

NOTE: Do not operate the starter motor for morethan 10 seconds at a time or after the engine hasstarted. Allow the starter to cool 15−20 secondsbetween starting attempts or damage to thestarter motor may occur.

4. Allow the engine and hydraulic system towarm up for three to five minutes.

WARNING: Engine emits toxic gases.Severe respiratory damage orasphyxiation can result. Provideadequate ventilation. Consult with yourregulatory authorities for exposurelimits. Keep engine properly tuned.

5. Turn on lights.

TURNING OFF THE MACHINE

1. Stop the machine and turn off all scrubbing/sweeping functions.

2. Turn the ignition switch key counter clockwiseto turn off the machine. Remain in theoperator seat until the engine is off.

FOR SAFETY: Before leaving or servicingmachine, do not park near combustiblematerials, dust, gases, or liquids. Stop onlevel surface, set parking brake, turn offmachine, and remove key.

OPERATION

20 M20 Diesel 331410 (3−2013)

FILLING THE SOLUTION TANK

FOAM SCRUBBING (FaST MODE) / ec−H2OSCRUBBING (ec−H2O MODE)

FOR SAFETY: Before leaving or servicingmachine, stop on level surface, set parkingbrake, turn off machine, and remove key.

1. Open either the left or right solution tank fillcover.

2. Fill the solution tank with only clean COOLWATER (less than 21°C / 70°F). DO NOT usehot water or add any conventional floorcleaning detergents or FaST system failuremay result.

WARNING: Flammable materials cancause an explosion or fire. Do not useflammable materials in tank(s).

NOTE: To install or change the FaST−PAKcarton, see the REPLACING THE FaST−PAKCARTON section of the manual.

NOTE: Do not use the FaST or ec−H2O systemwhen there are conventional cleaning detergentsin the solution tank. Drain, rinse, and refill thesolution tank with clear cool water beforeoperating the FaST or ec−H2O system.Conventional cleaning detergents may cause aFaST / ec−H2O system failure.

CONVENTIONAL SCRUBBING MODE


1. Open either the left or right solution tank fillcover.

2. Partially fill solution tank with water (not toexceed 60°C / 140°F). Pour the requiredamount of detergent into the solution tank. Fillthe solution tank with water until the level isjust below the indicator tab.


ATTENTION: For Conventional Scrubbing,only use recommended cleaning detergents.Machine damage due to improper detergentusage will void the manufacturer’s warranty.

NOTE: Pour a recommended foam controlsolution into the recovery tank if excessive foamappears. For specific detergentrecommendations, contact a TENNANTrepresentative.

OPERATION

21M20 Diesel 331410 (9−06)

ES (EXTENDED SCRUB) MODE WITHAUTO−FILL

FOR SAFETY: Before leaving or servicingmachine, stop on level surface, set parkingbrake, and turn off machine.

1. Connect the hose from the water source (notto exceed 60°C / 140°F) to the auto−fillconnection.

2. Turn the ignition switch to the on position(without starting) and turn on the watersource. The auto−fill automatically fills thetanks to the proper level.

3. Fill the detergent tank with the properdetergent.

ATTENTION: For ES Scrubbing, only userecommended low−foaming cleaningdetergents. Machine damage due to the use ofimproper detergent will void themanufacturer’s warranty.

ES (EXTENDED SCRUB) MODE − MANUALLYFILLING TANKS


1. Open either the left or right solution tankcover and fill the solution tank with water (notto exceed 60°C / 140°F) until the level is justbelow the indicator tab.

2. Open the recovery tank cover and fill therecovery tank with water (not to exceed 60°C/ 140°F) until the recovery tank isapproximately half full.


OPERATION

22 M20 Diesel 331410 (4−10)

SETTING SCRUB MODES

Before scrubbing, determine which scrub modewill be used (FaST, ES or conventional). Then setthe scrub brush pressure and adjust the solutionflow levels.

SETTING FaST MODE

The FaST button enables the FaST system tocome on when the 1−STEP Scrub button isactivated. The light next to the button will comeon. The machine will default to the last settingused when it is powered on or off.

SETTING ES (EXTENDED SCRUB) MODE

The ES button enables the ES system to come onwhen the 1−STEP Scrub button is activated. Thelight next to the button will come on. The machinewill default to the last setting used when it ispowered on or off.

NOTE: When the ES system is turned on there isa slight delay before the ES pump beginsoperating.

SETTING ec−H2O MODE

The ec−H2O button enables the ec−H2O systemto come on when the 1−STEP Scrub button isactivated. The light next to the button will comeon. The machine will default to the last settingused when it is powered on or off.

NOTE: Storage or transporting machinesequipped with ec−H2O in freezing temperaturesrequires special procedures. Follow the freezeprotection procedure located in the STORAGEINFORMATION section.

SETTING BRUSH PRESSURE

Under normal cleaning conditions, the brushpressure should be set to the minimum setting(the bottom light). Under heavy grime conditions,the brush pressure can be set to a higher setting.Travel speed and floor conditions will affectcleaning performance.

With the 1−STEP Scrub button or the 1−STEPSweep button activated, press either the BrushPressure increase button (+) or the BrushPressure decrease button (−) to set the brushpressure for the surface being cleaned. If brushesare worn, it may be necessary to increase thebrush pressure. The machine will default to thelast setting used when it is powered on or off.

OPERATION

23M20 Diesel 331410 (4−10)

SETTING SOLUTION FLOW

With the 1−STEP Scrub button activated, presseither Solution increase button (+) or Solutiondecrease button (−) to set the solution flow level.Travel speed and floor conditions will affectscrubbing performance. The machine will defaultto the last setting used when the machine ispowered on or off.

NOTE: In the ES and FaST modes, the solutionflow buttons control both the solution ANDdetergent flow levels.

To turn off all solution and detergent flow, pressthe Solution decrease button (−) until all indicatorlights are off.

CONVENTIONAL, FaST, AND ec−H2OSOLUTION FLOW

Under normal soilage conditions the solution flowlevel should be set to the lowest setting (thebottom light). Under heavy grime conditions, thesolution flow level should be set to the highersettings (middle or top lights).

ES (EXTENDED SCRUB) SOLUTION FLOW

For ES machines, the detergent flow is turnedoff when the solution flow is in the lowestsetting (one light). Under normal soilageconditions, the solution flow level should bealternated between the middle and lowest setting.The middle setting (two lights) allows solutionAND detergent flow. The lowest setting (one light)allows solution flow WITHOUT adding detergent.Detergent does not have to be continuouslyadded with the solution flow to attain effectivescrubbing results.

OPERATION

24 M20 Diesel 331410 (4−10)

SCRUBBING

The 1−STEP Scrub button operates all thescrubbing functions. (The machine also wetsweeps while scrubbing).

FOR SAFETY: Do not operate machine, unlessoperator manual is read and understood.

1. Start the machine.

NOTE: Make sure the scrub modes / settings areset before scrubbing.

2. Press the 1−STEP Scrub button. The light onthe button will come on. All the presetscrubbing functions will turn on.

NOTE: DO NOT turn on the FaST or ec−H2Osystem during conventional scrubbing.Conventional cleaning detergents could cause aFaST or ec−H2O system failure. Drain, rinse, andrefill the solution tank with cool clean water beforeoperating the FaST or ec−H2O system.

3. Release the parking brake, then press theDirectional pedal to begin scrubbing.

WARNING: Flammable materials orreactive metals can cause an explosionor fire. Do not pick up.

FOR SAFETY: When using machine, go slowon inclines and slippery surfaces.

NOTE: The squeegee automatically rises whenthe machine is driven backwards. This preventsdamaging the squeegee.

NOTE:The ec−H2O system indicator light will notturn on until the machine starts scrubbing.

ec−H2O Model: If an alarm sounds and theec−H2O system indicator light begins to blink red,the ec−H2O module must be flushed to resumeec−H2O operation (See ec−H2O MODULEFLUSH PROCEDURE).

NOTE: When the alarm sounds and the lightblinks red, the machine will bypass the ec−H2Osystem. To continue scrubbing, press the ec−H2Obutton to turn off the ec−H2O system.

ATTENTION: (ec−H2O model) Do not allowsolution tank to run dry. ec−H2O modulefailure may result if operated without water foran extended period.

ec−H2O SYSTEMINDICATOR LIGHTCODE

CONDITION

Solid green Normal operation

Blinking red Flush ec−H2O module

Solid red Contact Service Center

4. Release the directional pedal and press thebrake pedal to stop the machine.

5. Press the 1−STEP Scrub button to stopscrubbing. The light next to the button will gooff and scrubbing functions will stop after ashort delay.

OPERATION

25M20 Diesel 331410 (4−10)

DOUBLE SCRUBBING

For heavily soiled areas, use the double scrubbingmethod.

Double scrubbing can be performed using the FaST SCRUBBING SYSTEM (option), ec−H2O SCRUBBING SYSTEM (option) or CONVENTIONAL SCRUBBING methods.

Side brush option (S/N 000000−003076): Beforedouble scrubbing, manually lock the side brushsqueegee into the raised position. Pull the pinfrom the side brush squeegee bracket, manuallyraise the side squeegee to the upper position,then reinsert the brush pin.

Side brush option (S/N 003077− ): Beforedouble scrubbing, remove the side brush bumper.Pull the pins and remove the squeegee bumper.

Press the 1−STEP Scrub button, and then theScrub vacuum fan/squeegee button. The lightabove the Scrub vacuum fan/squeegee button willturn off, the squeegee will rise, and the vacuumfan will stop operating. Scrub the heavily soiledarea.


Let the cleaning solution soak on the floor for5−15 minutes. Then place the side squeegee intothe lower position and lock into place with the pin.

Press the Scrub vacuum fan/squeegee buttonagain to lower the squeegee and turn on thevacuum fan. The light above the button will comeon. Scrub the floor a second time to pick up thecleaning solution.


NOTE: To turn off the solution flow whenscrubbing the area a second time, repeatedlypress the Solution decrease button (−) until alllights above the button are off.

NOTE: Double scrubbing is not recommended inareas where the cleaning solution will run underracks or damage products.

OPERATION

26 M20 Diesel 331410 (11−09)

WATER PICKUP MODE (NO SCRUBBING)

The machine can be used to pick up water ornon−flammable liquid spills without scrubbing.

To pick up water or non−flammable liquid spills,make sure the 1−STEP Scrub button is notactivated. The light next to the button must be off.


Press the Scrub vacuum fan/squeegee button.The light above the button will come on, thesqueegee will lower, and the vacuum fan will startoperating. Pick up the water or non−flammableliquid spill.

SWEEPING

NOTE: The 1−STEP Sweep button operates allthe sweeping functions (without scrubbing).

FOR SAFETY: Do not operate machine, unlessoperator manual is read and understood.

Side brush option (S/N 000000−003076): Beforesweeping, manually lock the side brush squeegeeinto the raised position. Pull the pin from the sidebrush squeegee bracket, manually raise the sidesqueegee to the upper position, then reinsert thebrush pin.

Side brush option (S/N 003077− ): Beforesweeping, remove the side brush bumper. Pull thepins and remove the squeegee bumper.

OPERATION

27M20 Diesel 331410 (11−09)


NOTE: Make sure the sweep modes / settings areset before sweeping.

2. Press the 1−STEP Sweep button. The light onthe button will come on. All the presetsweeping functions will turn on.

3. Release the parking brake, then press theDirectional pedal to begin sweeping.


NOTE: Press the Sweep vacuum fan button toturn off the vacuum fan when sweeping over largewet areas or standing water. This prevents thehopper dust filter from getting wet while sweeping.

4. Release the Directional pedal and press theBrake pedal to stop the machine.

5. Press the 1−STEP Sweep button to stopsweeping. The light next to the button will turnoff and the sweeping functions will stop after ashort delay.

NOTE: The filter shaker automatically shakes thefilter for a short time each time the 1−STEPSweep button is turned off.

6. Empty the debris hopper at the end of eachshift or as needed. See EMPTYING THEHOPPER section of this manual

OPERATION

28 M20 Diesel 331410 (3−2013)

EMPTYING THE HOPPER

1. Drive the machine to a debris site orcontainer.

2. Press the Filter shaker button. The shakeroperates for approximately 30 seconds. Theindicator light comes on while the filter shakeris operating.

3. After the filter shaker stops, press and holdthe top of the Hopper raise/lower button toraise the hopper. Release the button when thehopper is at the desired position.

FOR SAFETY: When using machine, makesure adequate clearance is available beforeraising hopper. Do not raise hopper whenmachine is on an incline.

NOTE: Be aware the minimum ceiling heightneeded to raise the hopper is 2500 mm (98 in).

4. Slowly back the machine up to the debriscontainer.

FOR SAFETY: When using machine, use carewhen reversing machine. Move machine withcare when hopper is raised.

5. Press and hold the bottom of the Hopper dooropen/close button to open the hopper doorand empty the contents from the hopper.

6. Slowly drive the machine forward away fromthe debris site or container.

7. Stop the machine, then press and hold thebottom of the Hopper raise/lower button untilthe hopper is completely lowered.

NOTE: The hopper door will close automaticallywhen the hopper is lowered. The hopper door canbe closed by pressing the top of the hopper dooropen/close button.

OPERATION

29M20 Diesel 331410 (3−07)

ENGAGING HOPPER SUPPORT PIN

The hopper support pin is a safety feature used toprevent the raised hopper from falling. Always usethe hopper support pin whenever leaving thehopper in a raised position.

1. Stop the machine.

2. Press and hold the top of the Hopperraise/lower switch to raise the hopper.Release the switch when the hopper is at thedesired position.


FOR SAFETY: When using machine, makesure adequate clearance is available beforeraising hopper.

3. Set the parking brake.

4. Remove the hopper support pin from thestorage tube.

5. Insert the hopper support pin into one of thethree hopper support holes. Lower the hopperuntil it rests on the support pin.


DISENGAGING HOPPER SUPPORT PIN


2. Press and hold the top of the Hopperraise/lower switch until the hopper is off thesupport pin.

3. Remove the hopper support pin from thehopper support hole and insert it into thestorage tube.

4. Sit in the operators seat, then press and holdthe bottom of the Hopper raise/lower switchuntil the hopper is completely lowered.


OPERATION

30 M20 Diesel 331410 (3−2013)

REMOVING THE HOPPER DUST FILTER

NOTE: Empty hopper before removing the hopperdust filter.

1. Raise the hopper to the middle supportposition and engage the hopper support pin.See ENGAGING HOPPER SUPPORT PINsection of this manual.

NOTE: Do NOT raise the hopper to the topsupport position when accessing the dust filter.



2. Turn off the machine.


3. Loosen the hose clamp on the squeegeevacuum hose.

4. Disconnect the squeegee vacuum hose fromthe hopper.

5. Unhook the handles from the filter cover.

6. Open the filter cover and rest it against themachine.

7. Remove the dust filter and perma−filter trayfrom the hopper.

8. Clean or discard the dust filter. See theCLEANING THE HOPPER DUST FILTERsection of this manual.

9. Place the perma−filter tray into the hopper.

10.Place the cleaned or new dust filter into thehopper. Position the filter screen side up asshown below.

OPERATION

31M20 Diesel 331410 (3−2013)

11. Close the filter cover and secure the filtercover to the hopper with the handles.

12. Reconnect the squeegee vacuum hose to thehopper.

13. Disengage the hopper support pin and lowerthe hopper. See the DISENGAGINGHOPPER SUPPORT PIN section of thismanual.

CLEANING THE HOPPER AND DEBRISSCREEN

FOR SAFETY: Before leaving or servicingmachine, stop on level surface, and setparking brake.

1. Disconnect the vacuum hose from the debrisscreen.

2. Raise the hopper to the middle supportposition and engage the hopper support pin.See ENGAGING HOPPER SUPPORT PINsection of this manual.




4. Remove the filter from the hopper. See theREMOVING THE HOPPER DUST FILTERsection of this manual.

NOTE: Do NOT raise the hopper to the topsupport position when accessing the dust filter.


6. Press and hold the bottom of the hopper dooropen / close switch until the hopper door iscompletely open.


8. Flush dirt and debris from the debris hose anddebris screen and out into the hopper.

OPERATION

32 M20 Diesel 331410 (3−2013)

9. Rinse dirt and debris from the debris screenand the hopper. If necessary, remove thedebris screen to clean.

10. Reinstall the hopper dust filter. SeeREMOVING THE HOPPER DUST FILTERsection of this manual.

11. Disengage the hopper support pin and lowerthe hopper. See the DISENGAGINGHOPPER SUPPORT PIN section of thismanual.

DRAINING AND CLEANING THE RECOVERYTANK

Drain and clean the recovery tank daily or whenthe recovery tank full indicator comes on.

Clean the outside of the recovery tank with vinylcleaner.


DRAINING THE RECOVERY TANK WITH THEDRAIN HOSE

1. Lift the recovery tank cover.

2. Place the recovery tank drain hose nozzlenext to a floor drain.

3. Open the recovery tank Variable Drain Valve.

4. Rinse dirt and debris down through the drainhole in the demister tray and flush thevacuum hose.

NOTE: DO NOT use steam to clean tanks.Excessive heat can damage tanks andcomponents.

OPERATION

33M20 Diesel 331410 (3−2013)

5. Remove the vacuum screen from therecovery tank and rinse the screen.

6. Rinse the float sensor.

7. ES machines: Rinse the ES filter. Ifnecessary, remove the ES filter from therecovery tank.

8. Rinse dirt and debris towards the recoverytank drain. Allow the recovery tank to drain.

9. Close the recovery tank Variable Drain Valve.

10. Reinstall the recovery tank drain hose ontothe back of the recovery tank and close therecovery tank cover.

OPERATION

34 M20 Diesel 331410 (3−2013)

DRAINING THE RECOVERY TANK WITH THEDRAIN PLUG

Use the drain plug to drain the recovery tank if thetank is draining slowly or if the drain hose isplugged.

1. Park the machine so the larger drain in therecovery tank is positioned over the disposaldrain. Set the parking brake.

2. To avoid getting the hopper filter wet, raisethe hopper and engage the hopper supportpin in the lowest position.



FOR SAFETY: Before leaving or servicingmachine, stop on level surface, set parkingbrake, and remove key.

3. Lift the drain plug handle and remove thedrain plug from the tank.

4. Open the recovery tank Variable Drain Valve.

5. Remove the recovery tank drain hose fromthe back of the recovery tank, then rinse thedirt and debris from the hose into the tank.

6. Rinse dirt and debris out the open drain.

7. Clean the drain hole, then reinsert the drainplug. Push the handle down to tighten. Besure the drain plug is fully seated beforetightening.

OPERATION

35M20 Diesel 331410 (3−2013)

NOTE: If necessary, turn the handle clockwise fora tighter fit and counterclockwise for a looser fit.

8. Close the recovery tank Variable Drain Valve.

9. Reinstall the recovery tank drain hose ontothe back of the recovery tank.

10. Remove the hopper support pin and insert itinto the storage tube. Then lower the hopper.

11. Close the recovery tank cover.

DRAINING AND CLEANING THE SOLUTIONTANK

The solution tank on non−ES machines does notrequire regular maintenance. If deposits form onthe bottom of the tank, rinse the tank with astrong blast of warm water.

Clean the outside of the solution tank with vinylcleaner.

The solution tank on machines with the ES optionshould be drained and cleaned daily.


1. Open the solution tank cover(s).

2. Place the solution tank drain hose nozzle nextto a floor drain.

OPERATION

36 M20 Diesel 331410 (3−2013)

3. Open the solution tank Variable Drain Valve.

4. Rinse the solution tank. Flush dirt and debristoward the solution tank drain.

5. Rinse the float sensor and the screen filter.Allow the solution tank to drain.

6. Close the solution tank Variable Drain Valve.

7. Reinstall the solution tank drain hose onto theback of the recovery tank.

8. Close the solution tank cover(s).

OPERATION

37M20 Diesel 331410 (5−09)

FAULT INDICATOR(S)

This machine is equipped with two visualindicators, a red indicator light and an LCD (liquidcrystal display).

The red indicator light will blink continuouslyindicating that a fault has occurred.

The LCD will display a fault code. If there is morethan one fault, each fault will alternately display.

All faults are also accompanied by an audiblealarm to alert the operator a fault has occurred.

To reset the fault indicators, turn the machine off,then eliminate the cause of the fault. The faultindicator will reset when the machine is restarted.

Refer to the table below to determine the causeand remedy for the fault.

Fault Code(Displayed in LCD)

Cause(s) Result Remedy

F1: Hopper Up Hopper is up Terminates sweepingand scrubbing functions

Lower hopper completely.

F3: Clogged Hyd Hydraulic filter is clogged − Replace hydraulic filter.F4: Shaker Filter Hopper dust filter is

clogged− Activate filter shaker to

unclog hopper dust filter.F5: Hopper Fire Fire in the hopper Terminates sweeping

functions and closeshopper door

Shut off machine.Extinguish fire.If necessary, callemergency personnel.

F6: Sol. Tank E. Solution tank is empty − Fill solution tank.F7: Rec. Tank Full Recovery tank is full Terminates scrubbing

functionsPress the Scrub vacuumfan/squeegee button for oneminute of extended waterpickup. Empty recoverytank.ES models: activate the ESsystem to prevent this.

F8: High Eng Temp Engine temperature is high − Shut off machine.Contact TENNANT servicerepresentative.

F9: High Hyd Temp Hydraulic fluid temperatureis high

− Shut off machine.Contact TENNANT servicerepresentative.

F10: Low Fuel Low fuel − Fill fuel tank.F11: Open Scb Vac(Optional)

Scrub vacuum hose is notconnected

− Connect vacuum hose tosqueegee assembly.

F12: Seat Sw Open(Optional)

Operator not in the seatwhile engine is running andparking brake not engaged

Engine will shut off Engage parking brakebefore leaving the machine.

OPERATION

38 M20 Diesel 331410 (9−06)

CONDITIONS / WARNINGS

Condition codes are typically caused by theoperator attempting to activate modes that areunavailable. The code will appear in the LCD.

Refer to the table below to determine the cause ofthe condition.

Condition Code(Displayed in LCD)

Condition(s) Description

C2: No Sweep Vac Sweep vacuum unavailable Sweep vacuum not available when1−STEP scrub system is active.

C3: No FaST Mode FaST mode unavailable Only machines equipped with FaSTsystem can be operated in FaST mode.

C4: No ES Mode ES mode unavailable Only machines equipped with ES systemcan be operated in ES mode.

C5: No ES/FaST ES and FaST systems unavailable Only machines equipped with ES or FaSTsystem can be operated in these modes.

C6: No Side Sweep Side sweep unavailable Side sweep not allowed tooperate by itself.

OPERATION

39M20 Diesel 331410 (3−2013)

OPTIONS

SPRAY NOZZLE (OPTION)

The spray nozzle is used to clean the machineand surrounding areas. The solution tank providesa water/solution supply for the spray nozzle. Awand is included with the spray nozzle.

NOTE: Do NOT get water on electroniccomponents when using the spray nozzle to cleanthe machine.


1. Turn the key to the on position (withoutstarting the machine).

NOTE: The spray nozzle can be operated whilethe engine is running, but it is recommended toturn the engine off while using the spray nozzle.

2. Press the top of the Spray nozzle switch toturn on the water supply. The light on theswitch will come on when the spray nozzle isactivated.

3. Remove the spray nozzle from the storagearea and clean as required.

FOR SAFETY: When using pressurized air orwater, wear eye protection.

4. If cleaning a hard to reach area, install thewand onto the spray nozzle.

5. Twist the off/on knob to turn on the wand.

6. When finished cleaning, place the spraynozzle and wand back into their storagelocations.

7. Press the bottom of the Spray nozzle switchto turn off the water supply.

OPERATION

40 M20 Diesel 331410 (3−2013)

VACUUM WAND (OPTION)


1. Remove the vacuum wand nozzle and hosefrom the storage bag.

2. Attach the wand hose to the vacuum hose.

3. Assemble the wand and nozzle.


WARNING: Engine emits toxic gases.Severe respiratory damage orasphyxiation can result. Provideadequate ventilation. Consult with yourregulatory authorities for exposurelimits. Keep engine properly tuned.

5. Verify that the 1−STEP Scrub button is off.The light next to the button will be off.

6. Press the Scrub vacuum fan/squeegeebutton. The light above the button will turn onand the vacuum fan will start operating.

NOTE: The squeegee will lower.

7. Clean the spill or debris.

8. When finished vacuuming, press the Scrubvacuum fan/squeegee button to turn off thevacuum. The light above the button will turnoff.


10. Disassemble the vacuum wand assembly andreturn it to the storage bag.

11. Reattach the vacuum hose to the hopper liftarm.

OPERATION

41M20 Diesel 331410 (9−10)

MACHINE TROUBLESHOOTING

Problem Cause Remedy

Trailing water−poor or nowater pickup

Scrub vacuum fan turned off Turn on vacuum fan

Worn squeegee blades Rotate or replace squeegee blades

Squeegee out of adjustment Adjust squeegee

No detergent in solution tankcausing squeegee to chatter

Add detergent to solution tank

Vacuum hose clogged Flush vacuum hoses

Vacuum screen dirty Clean vacuum screen

Recovery tank cover seals worn Replace seals

Debris caught in squeegee Remove debris

Vacuum hose to squeegee orrecovery tank disconnected ordamaged

Reconnect or replace vacuum hose

Recovery tank cover notcompletely closed

Check for obstructions and makesure cover is closed properly

Scrub vacuum fan will notturn on

Vacuum fan / squeegee buttonturned off

Turn on Vacuum fan / squeegeebutton

Recovery tank full Drain recovery tank

Foam filling recovery tank Empty recovery tank

Use less detergent/or usedefoamer

Recovery tank sensor dirty or stuck Clean or replace sensor

Little or no solution flow tothe floor (ConventionalScrubbing Mode)

Solution tank empty Fill solution tank

Solution flow turned off Turn on solution flow

Solution supply lines plugged Flush solution supply lines

Excessive dusting Brush skirts and dust seals worn,damaged, or out of adjustment

Replace or adjust brush skirts and/or brush seals

Hopper dust filter clogged Shake and/or replace dust filter

Sweep vacuum fan seal damaged Replace vacuum fan seal

Sweep vacuum fan failure Call Tennant service representative

Thermo−Sentry tripped Allow Therm−Sentry to cool

Poor sweeping performance Worn brush bristles Replace brushes

Brush pressure set too light Increase brush pressure

Main brushes not properly adjusted Adjust brushes

Debris caught in main brush drivemechanism

Remove debris from main brushdrive mechanism

Main and/or side brush drive failure Call Tennant service representative

Hopper is full Empty hopper

Hopper lip skirts worn or damaged Replace lip skirts

Improper main brushes Call Tennant service representative

Poor scrubbing performance 1−STEP Scrub button not on Turn on 1−STEP Scrub button

Improper detergent or brushes Call Tennant service representative

Solution tank empty Fill solution tank

Debris caught on main brushes Remove debris

OPERATION

42 M20 Diesel 331410 (9−10)

Problem Cause Remedy

Poor scrubbing performance Worn main brushes Replace brushes

Brush pressure set too light Increase brush pressure

FaST System does notoperate

FaST button is turned off Turn on the FaST button

Clogged FaST−PAK supply hoseand/or connector

Soak connector and hose in warmwater and clean

FaST−PAK carton is empty or notconnected

Replace FaST−PAK carton and/orconnect supply hose

FaST system is not primed To prime, operate the FaSTsolution system for a few minutes

Clogged filter screen Drain solution tank, remove andclean filter screen

Blown fuse Call Tennant service representative

Faulty solution pump Call Tennant service representative

ES System does not operate ES button is turned off Turn on ES button

ES sensor in tank dirty Clean sensor

Clogged ES pump filter Clean ES filter

Water level in recovery tank too low Fill recovery tank about half full

Water level in solution tank too low Fill solution tank

Sweeping or Scrubbingfunctions do not turn on

Hopper is up Completely lower hopper

Fire in the hopper Shut off machine. Extinguish fire.If necessary, call emergencypersonnel.

Recovery tank full Press the Scrub vacuumfan/squeegee button for oneminute of extended water pickup.Empty recovery tank.ES models: activate the ES systemto prevent this.

ec−H2O Model:ec−H2O system indicatorlight blinks red and the alarmsounds

Mineral deposit build−up in module Flush module (See ec−H2OMODULE FLUSH PROCEDURE),if indicator light starts flashingwithin 1−10 seconds, repeat flushprocedure. If indicator light startsflashing after a minute ofscrubbing, the water may have lowconductivity.

Low water conductivity Add 8ml of salt to every 40 L ofwater.

ec−H2O Model: ec−H2O system indicatorlight solid red

Defective module Contact Service Center

ec−H2O Model: ec−H2O system indicatorlight does not turn on

Defective light or module Contact Service Center

ec−H2O Model: No water flow

Clogged module Contact Service Center

Defective solution pump Replace solution pump

Clogged filter screen Clean filter screen

MAINTENANCE

43M20 Diesel 331410 (9−06)

MAINTENANCE

1

2

3

4

5

6

7

8

9

19

10

12

14

13

15

16

11

17

18

20

20

MAINTENANCE

44 M20 Diesel 331410 (3−2013)

MAINTENANCE CHART

The table below indicates the Person Responsible for each procedure.O = Operator.T = Trained Personnel.

IntervalPersonResp. Key Description Procedure

Lubricant/Fluid

No. ofServicePoints

Daily O 1 Engine Check oil level EO 1Check coolant level inreservoir

WG 1

O 10 Hydraulic fluid reservoir Check fluid level HYDO 1O 8, 9 Tank cover seals Check for damage or wear − 3O 3 Main brushes Check for damage and wear − 2O 4 Side brush (option) Check for damage and wear − 1

Check squeegee blade fordamage and wear

− 1

O 6 Rear Squeegee Blade Check for damage and wear − 1Check deflection − 1

O 7 Side Squeegee Blades Check for damage and wear − 2O 8 Recovery tank Clean − 1O 8 Recovery tank, ES

mode (option)Clean ES filter − 1

O 9 Solution tank, ES mode(option)

Clean − 1

O 5 Hopper Clean hopper, debris screen,and hose

− 1

20Hours

O 5 Hopper dust filter Check for damage, clean,replace if necessary

− 1

50Hours

O 16 FaST / ec−H2O filterscreen

Clean − 1

O 3 Main brushes Rotate front to rear − 2T 3 Main brushes Check brush pattern and

adjust if needed− 2

T 13 Front wheel Torque wheel nuts (after initial 50 hours only)

− 1

T 15 Battery Clean and tighten batterycable connections (after initial 50 hours only)

− 1

T 1 Engine Check belt tension − 1100Hours

T 19 Radiator Clean core exterior − 1T 19 Hydraulic cooler Clean core exterior − 1T 1 Engine Change oil and filter EO 1O 13, 20 Tires Check for damage − 3T 6 Rear squeegee casters Lubricate SPL 2T 6 Rear squeegee Check leveling − 1O 2 Scrub head skirt Check for damage or wear − 1

MAINTENANCE

45M20 Diesel 331410 (5−2015)

The table below indicates the Person Responsible for each procedure.O = Operator.T = Trained Personnel.

IntervalPersonResp. Key Description Procedure

Lubricant/Fluid

No. ofServicePoints

200Hours

T 12 Front wheel supportbearings

Lubricate SPL 2

T 1, 17 Torque tube Lubricate SPL 4T 12 Steering cylinder Lubricate SPL 1T 1, 19 Radiator hoses and

clampsCheck for tightness andwear

− 2

T 11 Brake pedal Check adjustment − 1

T 14 Hopper lift arm pivots Lubricate SPL 2T 5 Hopper door pivots Lubricate SPL 2T 18 Hopper lift arm latch Clean and lubricate SPL 1T 16 FaST air filter

(S/N 000000−002532)Clean − 1

400Hours

T 1 Engine Replace air filter − 1Replace fuel filter − 1

T 20 Rear wheel bearings Check, lubricate, andadjust

SPL 2

800Hours

T 10 Hydraulic reservoir Replace filler cap 1

T − Hydraulic hoses Check for wear anddamage

− All

T 1, 19 Cooling system Flush WG 2T 13 Propelling motor Torque shaft nut − 1T 13 Front wheel Torque wheel nuts − 1

T 15 Battery Clean and tighten batterycable connections

− 1

1000Hours

T 16 FaST system filters(S/N 002533− )

Replace − 2

1200Hours

T 10 Hydraulic fluid filter * Replace fluid filter − 1

2400Hours

T 10 Hydraulic fluid reservoir * Replace strainer outlet − 1* Change hydraulic fluid HYDO 1

NOTE: Change the hydraulic fluid, filter, and suction strainer, indicated (*), after every 800 hours formachines NOT originally equipped with TennantTrue premium hydraulic fluid. (See Hydraulics section).

LUBRICANT/FLUID

EO 10W−30, 10W−40, or 15W−40 Engine oil, API diesel classification CF or better. . . .HYDO TennantTrue premium hydraulic fluid or equivalent.WG Water and ethylene glycol anti-freeze, −34� C (−30� F). . .SPL Special lubricant, Lubriplate EMB grease (Tennant part number 01433−1). . .

NOTE: More frequent maintenance intervals may be required in extremely dusty conditions.

MAINTENANCE

46 M20 Diesel 331410 (5−2015)

LUBRICATION


ENGINE OIL

Check the engine oil level daily. Change the oiland oil filter after every 100 hours of operation.

Fill the engine with oil until the oil is between theindicator marks on the dipstick. DO NOT fill pastthe top indicator mark. The engine oil capacity is 6 L (6.35 qt) with oil filter.

SQUEEGEE CASTER BEARINGS

Lubricate the squeegee caster bearings afterevery 100 hours of operation.

FRONT WHEEL SUPPORT BEARING

Lubricate the front wheel support bearings afterevery 200 hours of operation. Both front wheelsupport grease fittings are located underneath theframe support plate.

STEERING CYLINDER BEARING

Lubricate the steering cylinder after every 200hours of operation. The steering cylinder bearingis located next to the front wheel support.

REAR WHEEL BEARINGS

Inspect the rear wheel bearings for seal damage,and repack and adjust every 400 hours ofoperation. Use Lubriplate EMB grease (Tennantpart number 01433−1).

MAINTENANCE

47M20 Diesel 331410 (9−06)

HOPPER LIFT ARM PIVOTS

Lubricate the hopper lift arm pivots after every200 hours of operation.

HOPPER DOOR PIVOTS

Lubricate the hopper door pivots after every 200hours of operation.

LIFT ARM LATCH

Clean and lubricate the lift arm latch and latchstop after every 200 hours of operation.

TORQUE TUBES

Lubricate the torque tubes after every 200 hoursof operation. The torque tube grease fittings onthe operator side of the machine are locatedbeneath the fuel tank.

On the other side of the machine the torque tubegrease fittings are located beneath the propelpump.

MAINTENANCE

48 M20 Diesel 331410 (3−2013)

HYDRAULICS


Check the hydraulic fluid level at operatingtemperature daily. The hydraulic fluid level shouldbe between the two lines on the hydraulic gauge.The hopper must be down when checkinghydraulic fluid level.

ATTENTION! Do not overfill the hydraulic fluidreservoir or operate the machine with a lowlevel of hydraulic fluid in the reservoir.Damage to the machine hydraulic system mayresult.

Drain and refill the hydraulic fluid reservoir withnew TennantTrue premium hydraulic fluid afterevery 2400 hours of operation. Machines have ablue colored drop (left photo) on the hydraulic fluidlabel if originally equipped with TennantTruepremium hydraulic fluid.

WARNING: Burn hazard. Hot surface. DoNOT touch.

TennantTrue Fluid Previous Fluid

Replace the filler cap after every 800 hours ofoperation. Apply a light film of hydraulic fluid ontothe filler cap gasket before installing the cap ontothe reservoir.

Replace the hydraulic fluid filter after every 1200hours of operation or if the hydraulic reservoirgauge is in the yellow/red zone when the reservoirhydraulic fluid is approximately 32� C (90� F).

Replace the hydraulic strainer outlet after every2400 hours of operation.

MAINTENANCE

49M20 Diesel 331410 (3−2013)

HYDRAULIC FLUID

There are three fluids available for differentambient air temperature ranges:

TennantTrue premium hydraulic fluid (Extended Life)

PartNumber

Capacity ISOGradeViscosityIndex (VI)

Ambient AirTemperatureRanges

1057710 3.8 L

(1 gal)

ISO 100

VI 126 orhigher

19� C(65� F) orhigher

1057711 19 L

(5 gal)

1069019 3.8 L (1 gal)

ISO 68

VI 155 orhigher

7 to 43� C

(45 to110� F)1069020 19 L

(5 gal)

1057707 3.8 L

(1 gal)

ISO 32

VI 163 orhigher

16� C(60� F) orlower

1057708 19 L (5 gal)

If using a locally-available hydraulic fluid, be surethe specifications match Tennant hydraulic fluidspecifications. Substitute fluids can causepremature failure of hydraulic components.

ATTENTION! Hydraulic components dependon system hydraulic fluid for internallubrication. Malfunctions, accelerated wear,and damage will result if dirt or othercontaminants enter the hydraulic system.

HYDRAULIC HOSES

Check the hydraulic hoses after every 800 hoursof operation for wear or damage.

FOR SAFETY: When servicing machine, usecardboard to locate leaking hydraulic fluidunder pressure.

High pressure fluid escaping from a very smallhole can almost be invisible, and can causeserious injuries.

00002

Consult a physician immediately if injury resultsfrom escaping hydraulic fluid. Serious infection orreaction can occur if proper medical treatment isnot given immediately.

Contact a mechanic or supervisor if a leak isdiscovered.

MAINTENANCE

50 M20 Diesel 331410 (3−2013)

ENGINE


COOLING SYSTEM

FOR SAFETY: When servicing machine, avoidcontact with hot engine coolant. Do notremove cap from radiator when engine is hot.Allow engine to cool.

Check the coolant level in the reservoir daily. Thecoolant level must be between the indicator markswhen the engine is cold.

Check the coolant level in the radiator after every100 hours of operation. Refer to the coolantmanufacture for water/coolant mixing instructions.

Flush the radiator and the cooling system afterevery 800 hours of operation.

The cooling system must be completely filled withcoolant to keep the engine from overheating.When filling the cooling system, open the draincock to bleed the air from the system.

Check the radiator hoses and clamps after every200 hours of operation. Tighten loose clamps.Replace damaged hoses and clamps.

MAINTENANCE

51M20 Diesel 331410 (3−2013)

Check the radiator core exterior and hydrauliccooler fins for debris after every 100 hours ofoperation. Blow or rinse all dust through the grilleand radiator fins, in the opposite direction ofnormal air flow. Be careful to not bend the coolingfins when cleaning. Clean thoroughly to preventthe fins from becoming encrusted with dust. Toavoid cracking the radiator, allow the radiator andcooler fins to cool before cleaning.

AIR FILTER

Replace the air filter after every 400 hours ofoperation.

FUEL FILTER

The fuel filter removed imputities from the fuel.Replace the fuel filter after every 400 hours ofoperation.

FOR SAFETY: When servicing machine, keepflames and sparks away from fuel systemservice area. Keep area well ventilated.

FUEL LINES

Check the fuel lines every 50 hours of operation.If the clamp band is loose, apply oil to the screwof the band and securely tighten the band.

MAINTENANCE

52 M20 Diesel 331410 (3−2013)

The rubber fuel lines can become worn−outwhether the engine has been used much or not.Replace the fuel lines and clamp bands every twoyears.

FOR SAFETY: When servicing machine, keepflames and sparks away from fuel systemservice area. Keep area well ventilated.

If the fuel lines and clamp bands are found wornor damaged before two years’ time; replace orrepair them at once. Bleed the fuel system afterreplacement of any fuel lines, see PRIMING THEFUEL SYSTEM. When the fuel lines are notinstalled, plug both ends with clean cloth or paperto prevent dirt from entering the lines. Dirt in thelines can cause fuel injection pump malfunction.

PRIMING THE FUEL SYSTEM

Typical diesel fuel systems require priming toremove pockets of air from the fuel lines and fuelcomponents. This is usually required after runningout of fuel, changing fuel filter elements orrepairing a fuel system component. Air in the fuelprevents smooth engine operation.

This fuel system however is self-priming. Thereturn line comes from the top of the injector thatallows the air to escape through the return line.

ENGINE BELT

Check the belt tension after every 50 hours ofoperation. Adjust tension as necessary. Properbelt tension is 13 mm (0.50 in) from a force of 4 to5 kg (8 to 10 lb) applied at the mid-point of thelongest span.

WARNING: Moving belt and fan. Keepaway.

BATTERY

Clean and tighten the battery connections afterthe first 50 hours of operation and after every 800hours after that. Do not remove the vent plugsfrom the battery or add water to the battery.

FOR SAFETY: When servicing machine, avoidcontact with battery acid.

MAINTENANCE

53M20 Diesel 331410 (4−10)

FUSES, RELAYS, AND CIRCUIT BREAKERS

RELAY PANEL FUSES AND RELAYS

Fuses are one-time protection devices designedto protect the wire harness by stopping the flow ofcurrent in the event of a circuit overload. Relaysswitch the electrical power going to the machineelectrical systems on/off. Remove the relay panelcover to access fuses and relays.

NOTE: Always replace a fuse with a fuse of thesame amperage. Extra 15 Amp fuses areprovided inside the relay panel drawer on therelay panel.

Refer to the diagram below for locations of thefuses and relays on the relay panel. The M10relay for the optional spray nozzle is locatedbehind the battery.

Refer to the table below for the fuses and circuitsprotected.

Fuse Rating Circuit Protected

FU1 15 A Auxiliary Relays/Engine Controls

FU2 15 A Shaker

FU3 15 A Horn

FU4 15 A Not Used

FU5 15 A Scrub Vacuum/Main Brush/Squeegee Down/Hopper Up

FU6 15 A Enable/Side Brush/Sweep Vacuum

FU7 15 A Solution/Hopper Latch and Door/Auto Fill/Reverse/Shaker

FU8 15 A ES/FaST/Detergent/Hopper Down/Spray Wand

FU9 15 A Lights

FU10 15 A Unswitched B+ for controller board

FU11 15 A Not Used: Options

FU12 15 A Spray Nozzle Pump

FU13 15 A Not Used

FU14 15 A Not Used

− 20 A ec−H2O (near ignition switch)

Refer to the table below for the relays and circuitscontrolled.

Relay Rating Circuit Controlled

M1 12 VDC, 40 A Auxiliary 1

M2 12 VDC, 40 A Auxiliary 2

M3 12 VDC, 40 A Shaker

M4 12 VDC, 40 A Reverse

M5 12 VDC, 40 A Horn

M6 12 VDC, 40 A Shutdown

M7 12 VDC, 40 A Starter

M8 12 VDC, 40 A Starter (Diesel)

M9 12 VDC, 40 A Restart Delay

M10 12 VDC. 40 A Spray Wand (Separate Relay)

M11 12 VDC. 40 A Fuel Pump

MAINTENANCE

54 M20 Diesel 331410 (3−2013)

ENGINE HARNESS FUSES AND RELAYS

The engine harness fuses and relays are locatedin the fuse box inside the engine compartment.Refer to the fuse box cover for locations of engineharness fuses and relays.

NOTE: Always replace a fuse with a fuse of thesame amperage.

CIRCUIT BREAKERS (ec−H2O)

Circuit breakers are resettable electrical circuitprotection devices that stop the flow of current inthe event of a circuit overload. Once a circuitbreaker is tripped, allow breaker to cool and thenpress the reset button to manually reset thebreaker.

CLEANING THE HOPPER DUST FILTER

Shake the dust filter before emptying the hopperand at the end of every shift. Inspect and cleanthe filter after every 20 hours of operation.Replace damaged dust filters.

NOTE: The dust filter may need to be cleaned atmore frequent intervals if the machine is used inextremely dusty conditions.

Use one of the following methods to clean thedust filter:

SHAKING−Press the filter shaker button.

TAPPING−Tap the filter, with the dirty side down,gently on a flat surface. Do not damage theedges of the filter. The filter will not seal properlyin the filter frame if the edges of the filter aredamaged.

AIR−Always wear eye protection when usingcompressed air. Blow air through the dust filteropposite the direction of the arrows. Never usemore than 690 kPa (100 psi) of air pressure andnever hold the nozzle closer than 50 mm (2 in) tothe filter. This may be done with the dust filter inthe machine.

MAINTENANCE

55M20 Diesel 331410 (3−2013)

WATER−Rinse the dust filter with a low pressuregarden hose through the dust filter opposite thedirection of the arrows.

NOTE: If water is used to clean the dust filter, besure the filter is completely dry before reinstallingit into the hopper. Do Not reinstall a wet dustfilter.

THERMO−SENTRY

The Thermo−Sentry, located inside thehopper, senses the temperature of the air pulledup from the hopper. If there is a fire in the hopper,the Thermo−Sentry stops the vacuum fan andcuts off the air flow. The Thermo−Sentryautomatically resets after cooling down.

MAIN BRUSHES


Check the main brushes daily for tangled wire orstring, wear, damage, and adjustment.

Replace the brushes when they no longer cleaneffectively.

Rotate the brushes from front to rear after every50 hours of machine operation for maximumbrush life and best scrubbing performance.

NOTE: Replace brushes in sets of two. Otherwiseone scrub brush may scrub more aggressivelythan the other.

REPLACING OR ROTATING THE MAINBRUSHES

The front brush can be accessed on the left sideof the machine and rear brush can be accessedon the right side of the machine.

1. Raise the scrub head.


2. Open the outer brush doors.

3. Open the inner brush doors.

4. Remove the brush idler plates.

MAINTENANCE

56 M20 Diesel 331410 (3−2013)

5. Pull the brushes out from the scrub head.

6. Install the new or rotated brushes by pushingdown on the ends while sliding them onto thedrive motor hubs.

7. If rotating the brushes, always rotate the frontwith the back so that they wear evenly. Theymay be rotated end−for−end as well.

Before After

A B B A

8. Reinstall the brush idler plates.

9. Close the inner and outer brush doors.

10. Check the brush pattern and adjust if neededafter rotating them. Refer to CHECKING ANDADJUSTING THE MAIN BRUSH PATTERN.

MAINTENANCE

57M20 Diesel 331410 (3−2013)

CHECKING THE MAIN BRUSH PATTERN

1. Apply chalk, or a similar marking material, toa smooth and level section of the floor.

NOTE: If chalk or other material is not available,allow the brush to spin on the floor for twominutes. A polish mark will remain on the floor.

2. Raise the scrub head, then position thebrushes over the chalked area.


4. Press the 1−STEP Sweep button to lower thescrub head. Set the brush pressure to thelowest setting and allow the brushes tooperate for 15 to 20 seconds. Keep the scrubhead in one spot in the chalked area.

5. Raise the scrub head, release the parkingbrake, and drive the machine away from thechalked area.


6. Observe the brush patterns. If the brushpattern is the same width across the entirelength of each brush and both brushes are thesame width, no adjustment is necessary.

10355

7. If the brush patterns are tapered, seeADJUSTING THE MAIN BRUSH TAPERsection of this manual.

10652

8. The brush patterns should be 50 to 75 mm (2 to 3 in) wide with the brushes in thelowered position and both patterns should bethe same width. If the width of the brushes isnot the same, see ADJUSTING THE MAINBRUSH WIDTH section of this manual.

10653

MAINTENANCE

58 M20 Diesel 331410 (3−2013)

ADJUSTING THE MAIN BRUSH TAPER

1. Loosen the four mounting bolts on the brushdrive housing.

2. Move the brush drive housing up to decreasethe pattern width on that side of the scrubhead or down to increase the pattern width onthat side of the scrub head.

3. Tighten the mounting bolts.

4. Recheck the pattern. Readjust if necessary.

ADJUSTING THE MAIN BRUSH WIDTH

1. Adjust the length of the drag links on bothsides of the scrub head. Lengthen the draglinks to increase the rear brush pattern width.Shorten the drag links to increase the frontbrush pattern. Always adjust the nut on eachdrag link an equal number of turns.

NOTE: Two full turns of the drag link adjustmentbolt will change the brush pattern approximately25 mm (1 in).

2. Recheck the pattern. Readjust if necessary.

MAINTENANCE

59M20 Diesel 331410 (10−2015)

SIDE BRUSH (OPTION)


Check the side brush daily for wear or damage.Remove any tangled string or wire from the sidebrush or side brush drive hub.

REPLACING THE SIDE BRUSH

Replace the brush when it no longer cleanseffectively or when the bristles are worn down tothe yellow indicators.

1. If necessary, raise the side brush.

2. Turn the brush until the spring handles arevisible through the access hole in the sidebrush assembly.

3. Squeeze the spring handles and let the sidebrush drop to the floor.

4. Remove the side brush from underneath theside brush assembly.

5. Set the brush spring open on the new brushto make installation easier.

6. Place the new side brush underneath the sidebrush assembly and lift the side brush up ontothe side brush hub until the brush locks ontothe hub.

MAINTENANCE

60 M20 Diesel 331410 (3−2013)

FaST SYSTEM

REPLACING THE FaST−PAK CARTON


1. Open the side access door.

2. Slide the seat completely forward.

3. Squeeze the button on the FaST supply hoseconnector, then pull the empty FaST−PAKcarton out from the compartment and discard.

4. Remove the perforated knock outs from thenew FaST−PAK carton. Do Not remove thebag from the carton. Pull out the hoseconnector located on the bottom of the bagand remove the hose cap from the connector.

NOTE: The FaST−PAK Floor CleaningConcentrate is specially designed for use with theFaST system scrubbing application. NEVER usea substitute. Other cleaning solutions may causeFaST system failure.

5. Slide the FaST−PAK carton into theFaST−PAK bracket.

6. Connect the FaST supply hose to theFaST−PAK hose connector.

7. Scrub with the FaST system for a fewminutes to allow the detergent to reachmaximum foaming.

MAINTENANCE

61M20 Diesel 331410 (3−2013)

CLEANING THE FaST SUPPLY HOSECONNECTOR

Soak the connector in warm water if detergentbuildup is visible. When a FaST−PAK carton is notinstalled, store the supply hose connector on thestoring plug to prevent the hose from clogging.

CLEANING THE FaST SYSTEM FILTERSCREEN

The FaST system filter screen filters water fromthe solution tank as the water flows into the FaSTsystem.

Remove the filter screen bowl and clean the filterscreen after every 50 hours of operation. Emptythe solution tank before removing the filter.

CLEANING THE FaST SYSTEM AIR PUMPFILTER (S/N 000000 − 002532)

Remove and clean the air filter with compressedair after every 200 hours of FaST scrubbing.

REPLACING THE FaST SYSTEM FILTERS (S/N 002533− )

Replace the FaST system filters after every 1000hours of operation. Empty the solution tank beforereplacing the filters.

MAINTENANCE

62 M20 Diesel 331410 (3−2013)

ec−H2O MODULE FLUSH PROCEDURE

This procedure is only required when an alarmsounds and the ec−H2O system indicator lightbegins to blink red.

FOR SAFETY: Before leaving or servicingmachine, stop on level surface, set parkingbrake, turn off machine.

1. Remove both flush hoses from the storagebag located behind the operator seat.

2. Lock the operator seat cover open.

3. Disconnect the ec−H2O system intake hosefrom the solution supply hose and connect theintake flush hose (gray connector) to theec−H2O system intake hose.

4. Disconnect the ec−H2O system outlet hosefrom the hose to the scrub head and connectthe outlet flush hose (black connector) to theec−H2O system outlet hose.

5. Place the ec−H2O system intake hose into acontainer containing 5 gallons (19 liters) ofwhite or rice vinegar. Place the outlet hoseinto an empty bucket.

6. Turn the key to the on position without startingthe engine.

7. Press and release the ec−H2O module flushswitch to start the flush cycle.

NOTE: The module will automatically shut offwhen the flush cycle is complete (approx. 7minutes). The module must run the full 7 minutecycle in order to reset the system indicator lightand alarm.

MAINTENANCE

63M20 Diesel 331410 (4−10)

8. After the 7 minute flush cycle, remove thesiphon hose from the container of vinegar andplace the siphon hose into a container of coolclean water. Press the flush switch again torinse out any remaining vinegar from themodule. After 1−2 minutes, press the flushswitch to turn off the module.

9. Disconnect the flush hoses from the ec−H2Osystem intake hose and outlet hose andreturn the flush hoses to the storage bag.

10. Reconnect ec−H2O intake and outlet hoses. Ifthe ec−H2O system indicator light continuesto flash, repeat the flush procedure. If theproblem persists, contact an AuthorizedService Center.

11. Insert the outlet and intake hoses between theec−H2O assembly and the bracket.

NOTE: The outlet and intake hoses must be downbetween the ec−H2O assembly and the bracket sothey are not pinched or damaged when the operatorseat cover is closed.

12. Close the operator seat cover.

CLEANING THE ec−H2O FILTER SCREEN

Remove and clean the ec−H2O filter screen afterevery 50 hours of operation.

MAINTENANCE

64 M20 Diesel 331410 (3−2013)

SQUEEGEE BLADES


Check the squeegee blades for damage and weardaily. When the blades become worn, rotate theblades end−for−end or top−to−bottom to a newwiping edge. Replace blades when all edges areworn.

Check the deflection of the squeegee blades dailyor when scrubbing a different type of surface.Check the leveling of the rear squeegee every100 hours of operation.

REPLACING (OR ROTATING) THE REARSQUEEGEE BLADES

1. Lower the scrub head.

2. Disconnect the vacuum hose from the rearsqueegee assembly.

3. Remove both mounting knobs from the rearsqueegee assembly.

4. Turn on the machine, raise the scrub head,and turn off the machine.

5. Remove the rear squeegee assembly fromthe machine.

6. Loosen the rear retaining band tension latchand open the retaining band.

7. Remove the rear squeegee.

MAINTENANCE

65M20 Diesel 331410 (3−2013)

8. Install the new rear squeegee blade or rotatethe existing blade to the new edge. Be sure allthe holes in the squeegee blade are hookedonto the tabs.

9. Reinstall the rear retaining band aligning thetabs with the holes.

10. Tighten the rear retaining band tension latch.

11. Loosen the front retaining band tension latchand open the retaining band.

12. Remove the front squeegee.

13. Install the new front squeegee blade or rotatethe existing blade to the new edge. Be surethe holes in the squeegee blade are hookedonto the tabs.

MAINTENANCE

66 M20 Diesel 331410 (3−2013)

14. Reinstall the front retaining band aligning thetabs with the notches.

15. Tighten the front retaining band tension latch.

16. Reinstall the rear squeegee assembly ontothe machine.

17. Check and adjust the rear squeegee ifnecessary. Refer to ADJUSTING THE REARSQUEEGEE BLADE DEFLECTION andLEVELING THE REAR SQUEEGEE sectionsof this manual.

REPLACING OR ROTATING THE SIDESQUEEGEE BLADES

1. If necessary, raise the scrub head.


2. Open the outer brush doors.

3. Unhook the latch on the side squeegeeretaining band from the side squeegeeassembly.

4. Remove the retaining band from the sidesqueegee assembly.

MAINTENANCE

67M20 Diesel 331410 (3−2013)

5. Remove the side squeegee blade. If the outeredge of the squeegee blade is not worn,rotate the squeegee blade with the blade fromthe other side of the machine. Discard thesqueegee blade if both edges are worn.

6. Install the new or rotated squeegee blades.

7. Reattach the side squeegee retaining band tothe side squeegee assembly.

8. Hook the latch on the side squeegee retainingband.

9. Close the outer brush door.

MAINTENANCE

68 M20 Diesel 331410 (3−2013)

REPLACING THE SIDE BRUSH SQUEEGEEBLADE (S/N 000000−003076) (OPTION)

Check the side brush squeegee blade for damageand wear daily. Replace the blade if the leadingedge is torn or worn half-way through thethickness of the blade.

1. If necessary, raise the scrub head.

FOR SAFETY: Before leaving or servicingmachine, stop on level surface, set parkingbrake, turn off machine and remove key.

2. Pull the pin from the squeegee bumper andopen the squeegee bumper.

3. Remove the clevis pin and squeegee retainer.

4. Pull the squeegee out from the side brushassembly.

5. Slide the new squeegee into the side brushassembly.

6. Reinstall the squeegee retainer and clevis pin.

7. Close the squeegee bumper and reinsert thepin.

MAINTENANCE

69M20 Diesel 331410 (3−2013)

REPLACING OR ADJUSTING THE SIDEBRUSH SQUEEGEE BLADE (S/N 003077− )(OPTION)


Check the side brush squeegee blade for damageand wear daily. Replace the blade if the leadingedge is torn or worn half-way through thethickness of the blade.


2. Pull the pins and remove the squeegeebumper.

3. Open the retaining band tension latch.

4. Remove the squeegees, spacer, and retainerfrom the squeegee bumper.

NOTE: The side brush squeegee blades havedifferent holes for changing height adjustment.

5. Reinstall the squeegees, spacer, and retainerto the squeegee bumper by aligning theappropriate holes to the pins on the bumper.

6. Reinstall the retaining band tension latch.

7. Reinstall the squeegee bumper and reinsertthe pins.

MAINTENANCE

70 M20 Diesel 331410 (3−2013)

LEVELING THE REAR SQUEEGEE

Leveling the squeegee assures the entire lengthof the squeegee blade is in even contact with thesurface being scrubbed. Perform this adjustmenton an even and level floor.

1. Lower the squeegee and drive the machineforward a few meters (feet).


2. Look at the deflection of the squeegee overthe full length of the squeegee blade.

3. If the deflection is not the same over the fulllength of the blade, turn the squeegeelevelling nut to make adjustments.

DO NOT disconnect the suction hose fromthe squeegee frame when leveling squeegee.

4. Turn the squeegee leveling nutcounter-clockwise to decrease the deflectionat the ends of the squeegee blade.

Turn the squeegee leveling nut clockwise toincrease the deflection at the ends of thesqueegee blade.

5. Drive the machine forward with the squeegeedown to recheck the squeegee bladedeflection if adjustments were made.

6. Readjust the squeegee blade deflection ifnecessary.

MAINTENANCE

71M20 Diesel 331410 (3−2013)

ADJUSTING THE REAR SQUEEGEE BLADEDEFLECTION

Deflection is the amount of curl the overallsqueegee blade has when the machine movesforward. The best deflection is when thesqueegee wipes the floor dry with a minimalamount of deflection.

NOTE: Make sure the squeegee is level beforeadjusting the deflection. See LEVELING THEREAR SQUEEGEE.

1. Lower the squeegee and drive the machineforward a few meters (feet).


2. Look at the amount of deflection or “curl” ofthe squeegee blade. The correct amount ofdeflection is 12 mm (0.50 in) for scrubbingsmooth floors and 15 mm (0.62 in) for roughfloors.

12 mm(0.50 in)

3. To adjust the overall squeegee bladedeflection, turn the adjustment knobscounterclockwise to increase deflection orclockwise to decrease deflection.

4. Drive the machine forward again to recheckthe squeegee blade deflection afteradjustments are made.

5. Readjust the squeegee blade deflection ifnecessary.

MAINTENANCE

72 M20 Diesel 331410 (3−2013)

SKIRTS AND SEALS


SCRUB HEAD SKIRT

Check the skirt for damage and wear after every100 hours of operation.

The skirts should be between 0 to 6 mm(0 to 0.25 in) from the floor when the scrub headis down.

RECOVERY TANK SEAL

Check the recovery tank cover seal for damageand wear daily.

SOLUTION TANK SEALS

Check each solution tank cover seal for damageand wear daily.

MAINTENANCE

73M20 Diesel 331410 (3−2013)

BRAKES AND TIRES

BRAKES

The mechanical brakes are located on the rearwheels. The brakes are operated by the footbrake pedal and connecting cables.

Check the brake adjustment after every 200 hoursof operation.

To check the brake adjustment, measure thedistance from the stationary brake pedal to thepoint where there is resistance in the pedalmovement. The distance must be between 6 mm(0.25 in) and 19 mm (0.75 in). Adjust the brakes ifrequired.

TIRES

Check tires for damage and wear after every 100hours of operation.

FRONT WHEEL

Torque the front wheel nuts twice in the patternshown to 122 to 149 Nm (90 to 110 ft lb) after thefirst 50 hours of operation, and after every 800hours there after.

2

3

4

1

5

PROPELLING MOTOR

Torque the shaft nut to 508 Nm (375 ft lb)lubricated, 644 Nm (475 ft lb) dry, after every 800hours of operation.

MAINTENANCE

74 M20 Diesel 331410 (3−2013)

PUSHING, TOWING, AND TRANSPORTINGTHE MACHINE

PUSHING OR TOWING THE MACHINE

If the machine becomes disabled, it can bepushed from the front or rear, but only towed fromthe front.

The propelling pump has a bypass valve toprevent damage to the hydraulic system when themachine is being pushed or towed. This valveallows a disabled machine to be moved for a veryshort distance and at a speed to not exceed 1.6kp/h (1 mph). The machine is NOT intended to bepushed or towed a long distance or at a highspeed.

ATTENTION! Do not push or tow machine fora long distance or damage may occur to thepropelling system.

Turn the bypass valve located on the bottom ofthe propelling pump 90� (either direction) from thenormal position before pushing or towing themachine. Return the bypass valve back to thenormal position when through pushing or towingthe machine. Do Not use the bypass valve duringnormal machine operation.

TRANSPORTING THE MACHINE

1. Raise the squeegee, scrub head, andbrushes. If necessary, raise the hopper foradditional ramp clearance.

FOR SAFETY: When loading machine ontotruck or trailer, drain tanks and empty hopperbefore loading machine.

2. Position the rear of the machine at the loadingedge of the truck or trailer.

3. If the loading surface is not horizontal or ishigher than 380 mm (15 in) from the ground,use a winch to load machine.

If the loading surface is horizontal and 380mm (15 in) or less from the ground, themachine may be driven onto the truck ortrailer.

FOR SAFETY: When loading machine ontotruck or trailer, use winch. Do not drive themachine onto the truck or trailer unless theloading surface is horizontal AND is 380 mm(15 in) or less from the ground.

4. To winch the machine onto the truck or trailer,attach the winching chains to the holes in therear jacking brackets behind the rear tires.

MAINTENANCE

75M20 Diesel 331410 (3−2013)

5. Position the machine as close to the front ofthe trailer or truck as possible.

6. Set the parking brake and place a blockbehind each wheel to prevent the machinefrom rolling.


FOR SAFETY: When loading/unloadingmachine onto/off truck or trailer, lower scrubhead and squeegee before tying downmachine.

8. Connect the tie−down straps to the holes inthe right and left lower corners in front of themachine and the holes in the rear jackingbrackets behind the rear tires.

9. Route the tie−downs to the opposite ends ofthe machine and hook them to the bracketson the floor of the trailer or truck. Tighten thetie−down straps.

NOTE: It may be necessary to install tie-downbrackets to the floor of the trailer or truck.

10. If the loading surface is not horizontal or ishigher than 380 mm (15 in) from the ground,use a winch to unload machine.

If the loading surface is horizontal AND is 380mm (15 in) or less from the ground, themachine may be driven off the truck or trailer.

FOR SAFETY: When unloading machine offtruck or trailer, use winch. Do not drive themachine off the truck or trailer unless theloading surface is horizontal AND 380 mm (15 in) or less from the ground.

MAINTENANCE

76 M20 Diesel 331410 (3−2013)

MACHINE JACKING

Empty the hopper, recovery tank, and solutiontank before jacking up the machine. Jack up themachine at the designated locations. Use a hoistor jack capable of supporting the weight of themachine. Use jackstands to support the machine.Always stop the machine on a flat, level surfaceand block the tires before jacking up the machine.

Rear jacking locations are located directly behindthe rear tires on each side of the machine.

Front jacking locations are located on the framedirectly in front of the front tire.


FOR SAFETY: When servicing machine, blockmachine tires before jacking machine up. Usea hoist or jack that will support the weight ofthe machine. Jack machine up at designatedlocations only. Support machine with jackstands.

STORAGE INFORMATION

The following steps should be taken prior tostoring the machine for extended periods.

1. Drain and clean the solution and recoverytanks. Open the recovery tank and solutiontank covers to allow the air to circulate.

2. Park the machine in a cool, dry area. Do notexpose the machine to rain. Store indoors.

3. Remove the battery, or charge battery everythree months.

MAINTENANCE

77M20 Diesel 331410 (4−10)

FREEZE PROTECTION (MACHINES WITHOUTec−H2O SYSTEM)


1. Be sure the solution tank and recovery tankare empty.

2. Pour 3.8 L (1 gal) of Propylene Glycol Based /Recreational Vehicle (RV) Antifreeze into thesolution tank.


4. Press the 1−STEP Scrub button.

5. Repeatedly press the Solution increase button(+) until the solution flow is at the highestsetting.

6. Press the directional pedal to circulate the RVantifreeze completely through the system.

7. Press the 1−STEP Scrub button to turn off thesystem.

8. Machines equipped with the optionalspray nozzle only: Turn on the pump untilRV antifreeze solution sprays from the nozzle.

9. Turn the key to the off position.

10. The remaining RV antifreeze does not need tobe drained from the solution tank.

NOTE: Storing or transporting machines equippedwith the ES or the FaST system in freezingtemperatures requires special procedures.Consult a TENNANT representative for moreinformation.

FREEZE PROTECTION (MACHINES WITHec−H2O SYSTEM)


1. Empty the solution tank and recovery tank.

2. Remove the intake flush hose and from thestorage bag behind the operator seat.

3. Disconnect the ec−H2O system intake hosefrom the solution supply hose and connect theintake flush hose (gray connector) to theec−H2O system intake hose.

4. Pull the drain tube from the between theec−H2O unit and the operator compartment,remove the cap from the tube, and place theend of the tube into an empty container. Setthe cap aside.

MAINTENANCE

78 M20 Diesel 331410 (3−2013)


6. Press and release the ec−H2O module flushswitch. Allow the system to drain water intothe container for 2 minutes.

7. Press the ec−H2O module flush switch toshut off the system.

8. Disconnect the ec−H2O system outlet hosefrom the hose to the scrub head.

9. Blow pressurized air (less than 344 kPa (50psi)) into the ec−H2O system outlet hose.Continue blowing compressed air into theoutlet hose until water no longer drains fromthe drain tube

10. Reinstall the cap onto the drain tube andinsert the tube back between the ec−H2Omodule and the operator compartment.

11. Reconnect the ec−H2O system intake hose tothe solution supply hose and the ec−H2Osystem outlet hose to the hose to the scrubhead.

12. Insert the intake and outlet hoses downbetween the ec−H2O assembly and thebracket.

13. Return the intake flush hose to the storagebag behind the operator seat.

MAINTENANCE

79M20 Diesel 331410 (4−10)

PRIMING THE ec−H2O SYSTEM

Prime the ec−H2O system if the machine hasbeen stored for a long period without water in thesolution tank / ec−H2O system.


1. Fill the solution tank with clean cool water.See FILLING THE SOLUTION TANK sectionof this manual.

2. Remove the outlet flush hose (blackconnector) from the storage bag behind theoperator seat.

3. Disconnect the ec−H2O system outlet hosefrom the hose to the scrub head and connectthe outlet flush hose to the ec−H2O systemoutlet hose.

4. Place the ec−H2O system outlet hose into anempty container.


6. Press and release the ec−H2O module flushswitch. Allow the system to drain water intothe container for 2 minutes.

7. Press the ec−H2O module flush switch toshut off the system.

8. Disconnect the outlet flush hose from theec−H2O system outlet hose and return theflush hose to the storage bag.

9. Reconnect the ec−H2O system outlet hose tothe hose to the scrub head.

SPECIFICATIONS

80 M20 Diesel 331410 (5−2016)

SPECIFICATIONS

GENERAL MACHINE DIMENSIONS/CAPACITIES

Item Dimension/capacityLength 2410 mm (95 in)Height 1470 mm (58 in)Height (with overhead guard) 2120 mm (83.5 in)Width/frame (roller to roller) 1270 mm (50 in)Width (rear squeegee) 1300 mm (51 in)Width (with side brush) 1470 mm (58 in)Cleaning path width (Main brush length) 1020 mm (40 in)Cleaning path width (with scrubbing side brush) 1370 mm (54 in)Cleaning path width (with sweeping side brush) 1420 mm (56 in)Main brush diameter (2) 300 mm (12 in)Side brush diameter (scrubbing) 410 mm (16 in)Side brush diameter (sweeping) 530 mm (21 in)Solution tank capacity 212 L (56 gallons)Recovery tank capacity 276 L (73 gallons)Debris hopper volume capacity 110 L (3.9 ft3)Debris hopper weight capacity 177 kg (390 lbs)Dump height (variable to) 1520 mm (60 in)Minimum ceiling dump height 2500 mm (98 in)Weight − empty 1497 Kg (3300 lbs)GVWR 2359 Kg (5200 lbs)Transport ground clearance 80 mm (3 in)Protection Grade IPX3

Values determined as per IEC 60335−2−72 MeasureSound pressure level LpA 84 dB(A)Sound uncertainty KpA 3.0 dB(A)Sound power level LWA + Uncertainty KWA 106 dB(A)Vibration − Hand−arm < 2.5 m/s�Vibration − Whole body < 0.5 m/s�

GENERAL MACHINE PERFORMANCE

Item MeasureMinimum aisle turn 2790 mm (110 in)Travel speed forward (maximum) 12.9 Km/h (8 mph)Travel speed reverse (maximum) 4.8 Km/h (3 mph)Maximum ramp incline for loading − Empty tanks XX%Maximum ramp incline for scrubbing 14%Maximum ramp incline for transporting (GVWR) 18%Maximum ambient temperature for machine operation 43� C (110� F)Minimum temperature for operating machine scrubbing functions 0� C (32� F)

HYDRAULIC SYSTEM

System Capacity ISO Grade Viscosity Index Ambient Air Temperature RangesHydraulic reservoir 38 L (10 gal) ISO 100 VI 126 or higher 19� C (65� F) or higherHydraulic total 45 L (12 gal) ISO 68 VI 155 or higher 7 to 43� C (45 to 110� F)

ISO 32 VI 163 or higher 16� C (60� F) or lower

SPECIFICATIONS

81M20 Diesel 331410 (5−2016)

STEERING

Type Power source

Front wheel, hydraulic cylinder and rotary valve controlled Hydraulic accessory pump

POWER TYPE

Engine Type Ignition Cycle Aspiration Cylinders Bore Stroke

Kubota V1505−B Piston Diesel 4 Natural 4 78 mm(3.07 in)

78.4 mm(3.08 in)

Displacement Tennant machine governed netpower

Engine mfgun−governed netpower

1500 cc (91.4 cu in) 24.6 kw (34 hp) @ 2400 rpm 27.2 kw (37.5 hp) @3000 rpm

Fuel Cooling system Electrical system

DieselFuel tank: 42 L (11.2 gal)

low sulfur fuel contentless than 500ppm only

Water/ethylene glycol antifreeze

12 V nominal

Total: 7.5 L (2 gal) 37 A alternator

Radiator: 3.8 L (1 gal)

Idle speed, no load (Fast) governed speed, underload

Engine lubricating oilwithout filter

950 + 50 rpm 2400 + 50 rpm 6 L (6.35 qt) diesel classification CFor better

BRAKING SYSTEM

Type Operation

Service brakes Mechanical drum brakes (2), one per rear wheel, cable actuated

Parking brake Utilize service brakes, cable actuated

TIRES

Location Type Size

Front (1) Solid 140 mm x 460 mm (5.5 in x 18 in)

Rear (2) Solid 90 mm x 410 mm (3.5 in x 16 in)

SPECIFICATIONS

82 M20 Diesel 331410 (4−10)

FaST SYSTEM

Item Measure

Solution pump (S/N 002533 − ) 12 Volt DC, 11A, 0.7 GPM & 1.4 GPM flow, (2 spees), 75 psi high−pressure shutdown

Solution pump (S/N 000000−002532) 12 Volt DC, 11A, 11.6 LPM (3.0 GPM) open flow, 45 psi bypass setting

Low solution flow rate 2.7 LPM (0.7 GPM)

High solution flow rate 5.4 LPM (1.4 GPM)

Low concentrate flow rate 2.6 CC/Minute (0.085 Liquid Ounces/Minute)

High concentrate flow rate 5.2 CC/Minute (0.17 Liquid Ounces/Minute)

Detergent pump (S/N 000000−002532) 12 Volt DC

Air pump (S/N 000000−002532) 12 Volt DC, 0.6 Maximum Amp draw

Air pump flow rate (S/N 000000−002532) 8.7 LPM (0.3 CFM) open flow

ec−H2O SYSTEM

Item Measure

Solution pump 12 Volt DC, 11A, 0.7 GPM & 1.4 GPM flow, (2 speeds), 75 psi high−pressure shutdown

Solution flow rate 2.65 LPM (0.7 GPM) − Low

5.30 LPM (1.4 GPM) − High

SPECIFICATIONS

83M20 Diesel 331410 (9−06)

MACHINE DIMENSIONS

Frame(roller to roller) 1270 mm (50 in)

1470 mm(58 in)

2410 mm(95 in)

RearSqueegee1300 mm

(51 in)

Width(with side brush)1470 mm (58 in)

1014751

INDEX

84 M20 Diesel 331410 (5−2015)

Numbers

1-STEP Scrub button, 12, 16, 22, 23, 24, 25, 26

1-STEP Sweep button, 12, 16, 22, 27

A

Adjust operator seat, 14

Adjust steering column, 14

Adjusting the Main Brush Taper, 58

Adjusting the Main Brush Width, 58

Adjusting the Rear Squeegee Blade Deflection,71

Air Filter, 51

Alarms, 37Fault Indicators, 37

B

Battery, 52

Brake pedal, 15

Brakes, 73System specifications, 81

Brakes and Tires, 73Brakes, 73Front Wheel, 73Tires, 73

Brush Information, 17

Buttons1−STEP Scrub button, 241−STEP Sweep button, 27Brush Pressure decrease button (−), 22Brush Pressure increase button (+), 22ec−H20 button, 22Engine Speed Button, 12ES (Extended Scrub) button, 22FaST button, 22Filter shaker button, 28Hopper door open/close button, 28Hopper raise/lower button, 28Scrub vacuum fan/squeegee button, 25Side Brush button (Option), 12Solution decrease button (−), 23Solution increase button (+), 23Supervisor Control Buttons, 13Sweep vacuum fan button, 27

Buttons, Controls and Instruments, 9, 12

Bypass valve, 74

C

Capacities, 80

Charging System Indicator, 11

Check Engine Indicator (S/N 000000-002885),11

Checking the Main Brush Pattern, 57

Circuit breakers, ec-H2O, 54

Cleaning the ec-H20 fitler screen, 63

Cleaning the FaST Supply Hose Connector, 61

Cleaning the FaST System Air Pump Filter, 61

Cleaning the FaST System Check Valves, 61

Cleaning the FaST System Filter Screen, 61

Cleaning the Hopper and Debris Screen, 31

Cleaning the Hopper Dust Filter, 54

Conditions / Warnings, 38

Contents, 1

Controls and Instruments, 8, 9Touch Panel, 9

Cooling System, 50

D

Dimensions, 80

Directional pedal, 15

Disengaging Hopper Support Pin, 29

Double Scrubbing, 25

Draining and Cleaning the Recovery Tank, 32Draining the Recovery Tank with the Drain

Hose, 32Draining the Recovery Tank with the Drain Plug,

34

Draining and Cleaning the Solution Tank, 35

Draining the Recovery Tank with the Drain Hose,32

Draining the Recovery Tank with the Drain Plug,34

Dust Filter, 30Removing the Hopper Dust Filter, 30Replacing the Hopper Dust Filter, 30

E

ec-H20 module flush procedure, 62

ec-H20 module flush switch, 62

ec-H20 Scrubbing System, Indicator LightCodes, 24

INDEX

85M20 Diesel 331410 (5−2015)

ec-H20 Scrubbing System Indicator LightCodes , 24

ec-H2O system indicator light, 24

Emptying the Hopper, 28

Engaging Hopper Support Pin, 29

Engine, 50Air Filter, 51Cooling System, 50Engine Belt, 52Fuel Filter, 51Fuel Lines, 51Priming the fuel system, 52Specifications, 81

Engine Belt, 52

Engine Harness Fuses and Relays, 54

Engine Oil, 46

Engine Oil Pressure Indicator, 11

Engine Speed Button, 12

F

FaST System, 60Cleaning the FaST Supply Hose Connector, 61Cleaning the FaST System Air Pump Filter, 61Cleaning the FaST System Check Valves, 61Cleaning the FaST System Filter Screen, 61Replacing the FaST−PAK Carton, 60

Fault Indicators, 37

Filling the Solution Tank, 20Conventional Scrubbing Mode, 20ec−H20 scrubbing (ec−H20 Mode), 20ES (Extended Scrub) Mode − Manually Filling

Tanks, 21ES (Extended Scrub) Mode with Auto−Fill, 21Foam scrubbing (FaST Mode), 20

Filters, 30Cleaning the Hopper Dust Filter, 54Engine Air Filter, 51Fuel Filter, 51Hydraulic Fluid Filter, 48Removing the Hopper Dust Filter, 30Replacing the Hopper Dust Filter, 30

Freeze Protection (Machines with ec-H20system), 77

Freeze Protection (Machines without ec-H20system), 77

Front Wheel Support Bearing, 46

Front Wheel, Torque, 73

Fuel Filter, 51

Fuel Indicator, 12

Fuel Lines, 51

Fuses and Relays, 53Engine Harness Fuses and Relays, 54Relay Panel Fuses and Relays, 53

Fuses, Relays, and Circuit Breakers, CircuitBreakers (ec-H2O), 54

G

Glow Plug Light, 11, 19

H

Hazard Light Switch (Option), 13

Headlights, 13

Hopper Door Pivots, 47

Hopper Lift Arm Pivots, 47

Hopper Support Pin, 29Disengaging Hopper Support Pin, 29Engaging Hopper Support Pin, 29

Hour Meter, 13

How the Machine Works, 16

Hydraulic Fluid, 49

Hydraulic Hoses, 49

Hydraulic System, System specifications, 80

Hydraulics, 48Drain and refill hydraulic fluid reservoir, 48Hydraulic Fluid, 49Hydraulic Hoses, 49Replace the filler cap, 48Replace the hydraulic fluid filter, 48

I

Incline, Rated, 17

Indicator Light Codes, ec-H20 ScrubbingSystem, 24

Indicator light, ec-H2O system, 24

IndicatorsCharging System Indicator, 11Check Engine Indicator (S/N 000000−002885),

11Conditions / Warnings, 38Engine Oil Pressure Indicator, 11Fault Indicators, 37Fuel Indicator, 12Glow Plug Light, 11, 19Hour Meter, 13

INDEX

86 M20 Diesel 331410 (5−2015)

L

Leveling the Rear Squeegee, 70

Lift Arm Latch, 47

LightsHazard Light Switch (Option), 13Headlights, 13Operating, 13

Lubrication, 46Engine Oil, 46Front Wheel Support Bearing, 46Hopper Door Pivots, 47Hopper Lift Arm Pivots, 47Lift Arm Latch, 47Rear wheel bearings, 46Squeegee Caster Bearings, 46Steering Cylinder Bearing, 46Torque Tubes, 47

M

Machine components, 7

Machine Dimensions, 83

Machine Jacking, 76

Machine Operation, Pre-Operation Checklist, 18

Machine PerformanceAisle Turnaround Width, 80Climb and Descent Angles, 80Travel Speed (Maximum), 80

Machine Specifications, 80 - 83

Machine Troubleshooting, 41

Main Brushes, 55Adjusting the Taper, 58Adjusting the Width, 58Checking the Main Brush Pattern, 57Replacing or Rotating the Main Brushes, 55

Main Brushes, Adjusting the Taper, 58

Main Brushes, Adjusting the Width, 58

Main Brushes, Checking the Pattern, 57

Main Brushes, Replacing or Rotating, 55

Maintenance, 43 - 67

Maintenance Chart, 44

O

Operating Lights, 13

Operating temperature, 17

Operation, 7 - 31

Operation of controls, 11

Operator seat, 14

Options, 39Hazard Light, 13Side Brush, 12Spray Nozzle (Option), 39Squeegee protectors, 15Vacuum Wand (Option), 40

P

Parking brake pedal, 15

PedalsBrake pedal, 15Directional pedal, 15Parking brake pedal, 15

Pre-Operation Checklist, 18

Preheat-Glow Plug Light, 11, 19

Priming the ec-H20 system, 79

Priming the fuel system, 52

Propelling Motor, 73Torque Shaft Nut, 73

Pushing or Towing the Machine, 74

Pushing, Towing, and Transporting the Machine,74

Pushing or Towing the Machine, 74Transporting the Machine, 74

R

Radiator, 50Check hoses and clamps, 50Clean core exterior, 51

Rated incline, 17

Rear SqueegeeAdjusting the Rear Squeegee Blade Deflection,

71Leveling the Rear Squeegee, 70

Rear Squeegee Blade, Replacing (or Rotating)the Rear Squeegee Blade, 64

Rear Squeegee, Replacing (or Rotating), 64

Rear Wheel Bearings, 46

Recovery Tank Seal, 72

Relay Panel Fuses and Relays, 53

Removing the Hopper Dust Filter, 30

Replacing (or Rotating) the Rear SqueegeeBlades, 64

Replacing or Adjusting the Side Brush SqueegeeBlade (S/N 003077- ) (Option), 69

Replacing or Rotating the Main Brushes, 55

Replacing or Rotating the Side SqueegeeBlades, 66

INDEX

87M20 Diesel 331410 (5−2015)

Replacing the FaST-PAK Carton, 60

Replacing the Hopper Dust Filter, 30

Replacing the Side Brush (Option), 59

Replacing the Side Brush Squeegee Blade (S/N000000-003076) (Option), 68

S

SafetyInstructions, 3 − 5Labels, 5 − 7

Scrub Head Skirt, 72

Scrubbing, 24

Seals, 72Recovery Tank Seal, 72Solution Tank Seals, 72

Seat belts, 14

Seat, Operator, 14

Setting Brush Pressure, 22

Setting Conventional Solution Flow, 23

Setting ec-H20 Mode, 22

Setting ES (Extended Scrub) Mode, 22

Setting ES Solution Flow, 23

Setting FaST Mode, 22

Setting FaST Solution Flow, 23

Setting Scrub Modes, 22Setting Brush Pressure, 22Setting ec−H20 Mode, 22Setting ES (Extended Scrub) Mode, 22Setting ES Solution Flow, 23Setting FaST Mode, 22Setting Solution Flow, 23

Conventional and FaST Mode, 23ES (Extended Scrub) Mode, 23

Setting the Engine Speed, 12

Side Brush, 12

Side Brush (Option), 59Replacing the Side Brush, 59Replacing the Side Brush Squeegee (S/N

000000−003076), 68

Side Brush (S/N 003077- ) (Option),Replacing the Side Brush Squeegee, 69

Side Brush Squeegee (S/N 000000-003076)(Option), Replacing, 68

Side Brush Squeegee (S/N 003077- )(Option), Replacing or Adjusting, 69

Side Brush, Replacing, 59

Side Squeegee Blades, 66

Replacing or Rotating the Side SqueegeeBlades, 66

Side Squeegee, Replacing or Rotating, 66

Skirts and Seals, 72Recovery Tank Seal, 72Scrub Head Skirt, 72Solution Tank Seals, 72

Solution Tank Seals, 72

Specifications, 80 - 83Braking system, 81ec−H20 System, 82FaST System, 82Hydraulic System, 80Machine Capacities, 80Machine Dimensions, 80Machine Performance, 80Power Type, 81Steering, 81Tires, 81

Spray Nozzle (Option), 39

Squeegee Blades, 64Replacing (or Rotating) the Rear Squeegee

Blades, 64Replacing or Rotating the Side Squeegee

Blades, 66

Squeegee Caster Bearings, 46

Squeegee Protectors (Option), 15

Starting the Machine, 19

Steering, Specifications, 81

Steering Cylinder Bearing, 46

Storage Information, 76Freeze Protection, 77Priming the ec−H20 system, 79Storing the Machine, 76

Supervisor Control Buttons, 13

Sweeping, 26

Symbol definitions, 10 - 12

INDEX

88 M20 Diesel 331410 (5−2015)

T

Temperature, Operating, 17

Thermo-Sentry, 55

Tires, 73Specifications, 81

Torque Tubes, 47

Touch Panel, 9

Towing the Machine, 74

Transporting the Machine, 74

Turning Off the Machine, 19

V

Vacuum Wand (Option), 40

W

Warning Indicators, 11, 37Charging System Indicator, 11Check Engine Indicator (S/N 000000−002885),

11Conditions / Warnings, 38Engine Oil Pressure Indicator, 11Fault Indicators, 37

Water Pickup Mode (No Scrubbing), 26

Wheels, 73

While Operating the Machine, 17

(diesel) scrubber sweeper operator...

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