0361527 s1930 operators manual - broughton plant hire · 2018. 12. 13. · part number 0361527 may,...

Part Number 0361527May, 2005

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The aerial platform is not electrically insulated. Death or serious injury will result from con-tact with, or inadequate clearance from, an energized conductor.

Do not go closer than the minimum safe approach distance as defined by the Minimum SafeApproach Distance section in Chapter 3Safety.

Regard all conductors as energized.

Allow for electrical wire sag and aerial platform sway.

If the platform, scissors structure, or any part of the aerial platform contacts a high-voltage electricalconductor, the entire machine can become electrically charged.

If that happens, remain on themachine and do not contact any other structure or object. This includesthe ground, adjacent buildings, poles, and any other objects that are not part of the aerial platform.

Such contact could make your body a conductor to the other object, creating an electrical shockhazard resulting in death or serious injury.

If an aerial platform is in contact with an energized conductor the platform operator must warn groundpersonnel in the vicinity to stay away. Their bodies can conduct electricity creating an electrical shockhazard resulting in death or serious injury.

Do not approach or leave the aerial platform until the electricity has been turned off.

Do not attempt to operate the lower controls when the platform, scissors structure, or any part of theaerial platform is in contact with a high-voltage electrical conductor or if there is an immediate dangerof such contact.

Personnel on or near an aerial platformmust be continuously aware of electrical hazards, recognizingthat death or serious injury can result from contact with an energized conductor.

California

Proposition 65 Warning

Battery posts, terminals, and related accessories con-tain lead and lead components, chemical known to theState of California to cause cancer and birth defects orother reproductive harm.Wash hands after handling.

S1930 0361527

Table of Contents

Chapter 1 IntroductionAerial Platform Features ............................................. 1Options ...................................................................... 1OperatorsManual ...................................................... 1Safety Alerts .............................................................. 1Operation ................................................................... 1Maintenance .............................................................. 2Manual of Responsibilities .......................................... 2Additional Information ................................................. 2

Chapter 2 SpecificationsComponent Identification ............................................ 3General Specifications S1930 ..................................... 4Aerial Platform ........................................................ 4Platform .................................................................. 4Function Speed ....................................................... 4Drive System .......................................................... 4Drive/Lift Level Sensor Interlock............................... 4Tires ....................................................................... 4Electrical System ................................................... 4Hydraulic System ................................................... 4AmbientAir TemperatureOperating Range .............. 4

Chapter 3 SafetyElectrocution Hazards ................................................ 5MinimumSafeApproach Distance .............................. 5Prestart Inspection ..................................................... 6Work Place Inspection and Practices......................... 6Operation ................................................................... 6Tip-Over and FallingHazards ...................................... 6Electrical System....................................................... 7Hydraulic System....................................................... 7Placards and Decals .................................................. 7

Chapter 4 Safety DevicesEmergency Stop Controls .......................................... 9DriveMotionAlarm ..................................................... 9Pothole Protector Skids ............................................. 9Drive/Lift Pothole Protector Interlock ......................... 10Drive/Lift Level Sensor Interlock ................................ 10LoweringAlarm......................................................... 10Emergency Lowering Lever ....................................... 10Safety Prop .............................................................. 10Guardrails ................................................................ 11Ground Fault Circuit Interrupter ................................ 11Tilt Alarm .................................................................. 11Horn ......................................................................... 11Flashing Light .......................................................... 11

Chapter 5 Gauges and DisplaysHourMeter ............................................................... 13Ammeter .................................................................. 13Battery Condition Indicator ....................................... 13

Chapter 6 BatteriesGeneralMaintenance ............................................... 15Charging .................................................................. 15

Chapter 7 ControlsBattery Disconnect Switch ....................................... 17LowerControls ......................................................... 17Emergency Stop Button ........................................ 17Control Selector Switch ........................................ 17PlatformRaise/Lower Switch ................................ 17

UpperControls ......................................................... 17Emergency Stop Button ........................................ 18Drive/Lift Selector Switch ...................................... 18Joystick ................................................................ 18Interlock ................................................................ 18Steer Switch ......................................................... 18

Horn Button .............................................................. 18Battery Condition Indicator ....................................... 18Circuit Breaker Reset Button .................................... 18

Chapter 8 Prestart InspectionOperatorsManual .................................................... 19Electrical System..................................................... 19Battery Fluid Level ................................................ 19Battery Terminals .................................................. 19Battery Charger .................................................... 19

Safety Prop .............................................................. 20Cables andWiring Harness ...................................... 20Hydraulic System..................................................... 21Fluid Level ............................................................ 21Hoses, Tubes, and Fittings ................................... 21Free-WheelingValve ............................................. 21

Tires andWheels ..................................................... 22Parking Brakes ........................................................ 22GroundStrap ............................................................ 22Lower Control Station ............................................... 22OperatingControls ................................................ 22Emergency Stop ................................................... 22

LoweringAlarm......................................................... 22Pothole Protector Interlock ....................................... 23Emergency Lowering ................................................ 23Structures ................................................................ 24Weldments ........................................................... 24Slide Blocks ......................................................... 24Fasteners ............................................................. 24

Upper Control Station ............................................... 24Guardrail System .................................................. 24Platform Extension ............................................... 25OperatingControls ................................................ 25Emergency Stop ................................................... 25LoweringAlarm ..................................................... 25DriveMotionAlarm ................................................ 25

Electrical Power Outlet ............................................. 26Flashing Light .......................................................... 26Battery Condition Indicator ....................................... 26Placards and Decals ................................................ 26Prestart Inspection Checklist ................................... 29

Table of Contents

S1930 0361527

Chapter 9 OperationPreparing forOperation............................................. 31LowerControls ......................................................... 31UpperControls ......................................................... 31Driving ...................................................................... 32DriveSpeeds ......................................................... 32Drive/Lift Level Sensor Interlock............................. 32

Steering.................................................................... 32Platform ................................................................... 33Raising and Lowering ............................................ 33Extending ............................................................. 33

Brakes ..................................................................... 33Swing-Out Trays ...................................................... 33Electrical Power Outlet ............................................. 34Wallboard LoadingGate ........................................... 34

Chapter 10 Stowing and TransportingStowing .................................................................... 35Transporting ............................................................. 35Lifting With a Forklift ............................................. 35Winching .............................................................. 35Driving ................................................................... 36Hoisting ................................................................ 37Securing for Transport ........................................... 38

Chapter 11 Emergency OperationEmergency Lowering ................................................ 39Towing ...................................................................... 39

Chapter 12 TroubleshootingTroubleshootingChart .............................................. 41

Appendix A Glossary

Limited Warranty

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Chapter 1 Introduction

Aerial Platform FeaturesThe aerial platform is a self-propelled scissors lift thathas been designed to raise personnel, their tools, andmaterial to the workstation. The platform is raised andlowered with a hydraulic cylinder. A hydraulic motor oneach of the frontwheels provides power tomove the aerialplatform.

The standardmachine includes the following features.

Proportional drive and lift up control Drivable at full height Drivemotion alarm Non-marking tires Automatic pothole protection system Level sensor with drive/lift interlock Hourmeter Manual lowering valve Lockable battery disconnect switch Tie-down lugs Lifting lugs Heavy duty battery charger with ammeter Swing-out hydraulic and electrical component trays Non-slip metal platform floor Three foot platform extension 125 volt AC electrical outlet with GFCI Scissor arm safety support prop Lowering alarm Removable upper controls Forklift loadable from three sides Rear forklift pockets Chain entry gate Wallboard loading gate Five year limited warranty

The aerial platform has beenmanufactured to conform toall applicable requirements of the following organizations.

Occupational Safety and Health Administration(OSHA)

American National Standards Institute (ANSI) Canadian StandardsAssociation (CSA)

OptionsThe following optionsmay be provided on themachine. Horn Flashing light Swinging platform gate Battery condition indicator

Operators ManualThismanual provides information for safe and proper op-eration of the aerial platform. Some information in thismanual refers to options that may not be on your ma-chine. Read and understand the information in thisOperatorsManual before operating the aerial platformonthe job.

Additional copies of this manual may be ordered fromSnorkel. Supply themodel andmanual part number fromthe front cover to assure that the correct manual will besupplied.

All information in this manual is based on the latest prod-uct information at the time of publication. Snorkel reservesthe right to make product changes at any time withoutobligation.

SafetyAlertsA safety alert symbol is used throughout this manual toindicate danger, warning, and caution instructions. Fol-low these instructions to reduce the likelihood of per-sonal injury and property damage. The terms danger,warning, and caution indicate varying degrees of personalinjury or property damage that can result if the instruc-tion is not followed.

ADangerIndicates an imminently hazardous situation which,if not avoided, will result in death or serious injury.This signal word is to be used in the most extremesituations.

AWarningIndicates a potentially hazardous situation which, ifnot avoided, could result in death or serious injury.

ACautionIndicates a potentially hazardous situation which, ifnot avoided, may result in minor or moderate in-jury. It may also be used to alert against unsafepractices.

NotesNotes are used to provide special information or helpfulhints to assist in aerial platform operation, but do notindicate a hazardous situation.

OperationThe aerial platform has built-in safety features and hasbeen factory tested for compliance with Snorkel specifi-cations and industry standards. However, any personnellifting aerial platform can be potentially dangerous in thehands of untrained or careless operators.

AWarningThe potential for an accident increases when theaerial platform is operated by personnel who arenot trained and authorized. Death or serious injurycan result from such accidents. Read and under-stand the information in thismanual and on the plac-ards and decals on the machine before operatingthe aerial platform on the job.

Chapter 1 Introduction

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Training is essential and must be performed by a quali-fied person. Become proficient in knowledge and actualoperation before using the aerial platform on the job. Youmust be trained and authorized to perform any functionsof the aerial platform.Operation of the aerial platformmustbe within the scope of the machine specifications.

The operator bears ultimate responsibility for following allmanufacturers instructions andwarnings, regulations andsafety rules of their employer and/or any state or federallaw.

MaintenanceEvery person who maintains, inspects, tests, or repairsthe aerial platform must be qualified to do so. Followingthe daily prestart inspection in this Operators Manualwill help keep the aerial platform in optimumworking con-dition. Other maintenance functions must be performedby maintenance personnel who are qualified to work onthe aerial platform.

Do not modify this aerial platform without prior writtenconsent of the Snorkel Engineering Department. Modifi-cationmay void the warranty, adversely affect stability, oraffect the operational characteristics of the aerial plat-form.

Manual of ResponsibilitiesAll owners and users of the aerial platform must read,understand, and comply with all applicable regulations.Ultimate compliance to OSHA regulations is the respon-sibility of the user and their employer.

ANSI publications clearly identify the responsibilities ofall personnel who may be involved with the aerial plat-form.Areprint of the Manual of Responsibilities for Deal-ers, Owners, Users, Operators, Lessors and Lessees ofANSI/SIAA92.6-1999Self-PropelledElevatingWorkPlat-forms is available from Snorkel dealers or from the fac-tory upon request.

Copies are also available from:

Scaffold IndustryAssociation, Inc.P. O. Box 20574Phoenix, AZ 85036-0574 USA

Additional InformationFor additional information contact your local dealer orSnorkel at:

Snorkel InternationalP.O. Box 1160St. Joseph, MO 64502-1160 USA1-800-255-0317

http://www.snorkelusa.com

S1930 0361527 3

Chapter 2 Specifications

Component Identification

Chassis

Battery Charger

Upper Controls

Platform Platform Extension

Left Side

Battery TrayBattery DisconnectSwitch

Pothole Protector Skid

OperatorsManual

ScissorsStructure

Guardrails

Toeboards

Entry Step

Ground Strap

Right Side

Rear

Front

Lower Controls Hydraulic Tray

Lifting Lugs

Tie-down Lugs

Drive and SteerWheels

Drive and SteerWheels

EmergencyLoweringLever

Forklift Pockets

Tie-down/Lifting Lugs

WallboardLoading Gate

Chapter 2 Specifications

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General Specifications S1930

Aerial PlatformWorking height 25′ (7.6 m)Maximum platform height 19′ (5.8 m)Turning radiusInside 5″ (12.7 cm)Outside 64.5″ (1.64m)

Wheelbase 4′ 6″ (1.37 m)Ground clearancePothole protector raised 2.5″ (6.3 cm)Pothole protector lowered 0.75″ (1.9 cm)Maximumwheel load 1,416 lbs (642 kg)Maximumground pressure 175 psi (12.3 kg/cm²)Weight, GVWApproximate 3,040 lbs (1,379 kg)Stowedwidth 30″ (76.2 cm)Stowed length 6′ 2″ (1.9 m)With step removed 5′ 6″ (1.7 m)Stowed height 6′ 7″ (2.0 m)

PlatformDimensionsMain 29″ x 61.5″ (74 cm x 156 cm)Extension 24″ x 36″ (61 cm x 91.4 cm)Total length with extension 97.5″ (247.5 cm)Rated work loadTotal 500 lb (227 kg)Extension 250 lb (113.3 kg)

Maximum number of occupantsOutside 1 personInside 2 people

AC outlet 120 V, 15 amp

Function SpeedPlatform raise 12 to 20 secondsPlatform lower 20 to 26 secondsHighDrivePlatform lower than 6 feet (1.8 m)

0 to 2.5 mph (0 to 4 km/h)LowDrivePlatform higher than 6 feet (1.8 m)

0 to 0.5 mph (0 to 0.8 km/h)

Drive SystemStandard Two-wheeldriveGradeability 20%Maximumdrive height 19′ (5.8 m)

Drive/Lift Level Sensor InterlockSide-to-side 2 degreesFront-to-rear 4 degrees

TiresNonmarking solid rubber 12″ x 4″ (30.5 cm x 10.2 cm)

Electrical SystemVoltage 24 V DC negative chassis groundSource Four - 6 V 220 amp hour batteriesFluid recommended distilled waterCharger 25 amp

Hydraulic SystemMaximum pressure 2,800 psi (19,305 kPa)Reservoir capacity 3 US gal (11.35 l)System capacity 3.5 US gal (13.2 l)Maximumoperating temperature 160°F (71°C)Hydraulic fluid recommendedAbove 10°F (-13°C) Mobil DTE-13M (ISOVG32)Below 10°F (-13°C) Mobil DTE-11M (ISOVG15)

Ambient Air Temperature Operating RangeFahrenheit 0°F to 110°FCelsius -18°C to 43°C

S1930 0361527 5

Chapter 3 Safety

Knowledge of the information in this manual, and propertraining, provide a basis for safely operating the aerialplatform. Know the location of all controls and how theyoperate to act quickly and responsibly in an emergency.

Safety devices reduce the likelihood of an accident. Neverdisable, modify, or ignore any safety device. Safety alertsin this manual indicate situations where accidents mayoccur.

If anymalfunction, hazard or potentially unsafe conditionrelating to capacity, intended use, or safe operation issuspected, stop aerial platform operation and seek as-sistance.

The operator bears ultimate responsibility for following allmanufacturers instructions andwarnings, regulations andsafety rules of their employer and/or any state or federallaw.

Electrocution HazardsThe aerial platform is made of metal components and isnot insulated. Regard all conductors as energized. Donot operate outside during a thunderstorm.

Minimum Safe Approach DistanceMinimum safe approach distances to energized powerlines and their associated parts must be observed whileoperating the aerial platform.

ADangerThe aerial platform is not electrically insulated.Death or serious injury will result from contact with,or inadequate clearance from, an energized con-ductor. Do not go closer than theminimum safe ap-proach distance as defined by ANSI.

ANSI publications define minimum distances that mustbe observedwhenworking near bus bars and energizedpower lines. Table 1 and Figure 3 are reprinted courtesyof Scaffold IndustryAssociation,ANSI/SIAA92.6.

Table 1 Minimum Safe Approach Distance

Figure 3 Minimum Safe Approach Distance

Minimum Safe Approach DistanceVoltage Range(Phase to Phase)

0 to 300VOver 300V to 50kVOver 50kV to 200kV

Over 200kV to 350kVOver 350kV to 500kV

Over 500kV to 750kVOver 750kV to 1000kV

Feet Meters

Avoid Contact1015

2520

3545

3.054.606.10

7.6210.6713.72

Chapter 3 Safety

6 S1930 0361527

Prestart InspectionPerform a prestart inspection before each shift as de-scribed in Chapter 8. Do not use the aerial platform onthe job unless you are trained and authorized to do so.

Work Place Inspection and PracticesDo not use the aerial platform as a ground connectionwhen welding. The welding ground clamp must be at-tached to the same structure that is being welded. Elec-trical current flow can be very intense, causing seriousinternal damage to some components.

Inspect the area before and during aerial platform use.The following are some potential hazards that may be inthe work place.

Debris Slopes Drop-offs or holes Bumps and floor obstructions Overhead obstructions Unauthorized persons High voltage conductors Wind and weather conditions Inadequate surface and support to withstand loadforces applied by the aerial platform in all operatingconfigurations

Before using the aerial platform in any hazardous (classi-fied) location, make certain it is approved and of the typerequired byANSI/NFPA 505 for use in that particular lo-cation.

Knowand understand the job site traffic-flow patterns andobey the flagmen, road signs, and signals.

While operating the aerial platform, a good safety prac-tice is to have qualified personnel in the immediate workarea to:

Help in case of an emergency. Operate emergency controls as required. Watch for loss of control by platform operator. Warn the operator of any obstructions or hazardsthat may not be obvious to them.

Watch for soft terrain, sloping surfaces, drop-offs, etc.where stability could be jeopardized.

Watch for bystanders and never allow anyone to beunder the platform, or to reach through the scissorarms while operating the aerial platform.

ADangerPinch points may exist between moving compo-nents. Death or serious injury will result from be-coming trapped between components, buildings,structures, or other obstacles.Make sure there is suf-ficient clearance around the machine before mov-ing the chassis or platform. Allow sufficient roomand time to stop movement to avoid contact withstructures or other hazards.

Always look in the direction of movement. Drive with careand at speeds compatible with the work place conditions.Use caution when driving over rough ground, on slopes,and when turning. Do not engage in any form of horse-play or permit riders any place other than in the platform.

Secure all accessories, containers, tools, and other ma-terials in the platform to prevent them from accidentallyfalling or being kicked off the platform. Remove all ob-jects that do not belong in or on the aerial platform.

Never steady the platform by positioning it against an-other platform. Do not use boards, or other temporarymeans to support or level the aerial platform.

Do not operate the aerial platform if it is damaged or notfunctioningproperly.Qualifiedmaintenancepersonnelmustcorrect the problembefore putting the aerial platformbackinto service.

OperationUse three points of support when entering or exiting theplatform. For example, use two hands and one foot whenclimbing into the platform.

Make sure the area below the platform is free of person-nel before lowering.

Keep both feet positioned firmly on the platform floor.Operate the controls slowly and deliberately to avoid jerkyand erratic operation.Always stop the controls in neutralbefore going in the opposite direction.

Do not dismount while the aerial platform is in motion orjump off the platform.

Properly stow the aerial platform and secure it againstunauthorized operation at the end of each work day, be-fore transporting, or if it is left unattended.

Tip-Over and Falling HazardsOperate the aerial platform only on a firm, flat, level sur-face capable of withstanding all load forces imposed bythe aerial platform in all operating conditions. Refer to theGeneral Specifications chart for themaximumwheel load,maximum floor pressure, and drive/lift level sensor inter-lock information. Raise the platform only when the aerialplatform is on level ground.

ADangerThe aerial platform can tip over if it becomes un-stable. Death or serious injury will result from a tip-over accident. Do not drive or position the aerialplatform for elevated use near any drop-off, hole,slope, soft or uneven ground, or other tip-over haz-ard. Do not raise the platform outdoors in windspeeds above 28 mph (12.5 m/s).

Do not operate the aerial platformwithin 4′ (1.2 m) of anydrop-off or hole.

Chapter 3 Safety

S1930 0361527 7

Do not add anything to the aerial platform that will in-crease thewind loading suchasbillboards, banners, flags,etc.

Never operate the aerial platform without all parts of theguardrail system in place and the safety chain or gateclosed. Make sure that all protective guards, cowlings,and doors are securely fastened.

Do not exceed the platform capacity as indicated on theplatform rating placard on the platform. Do not carry loadsthat extend beyond the platform guardrails without priorwritten consent from Snorkel.

Do not operate the aerial platform from trucks, trailers,railway cars, floating vessels, scaffolds, or similar equip-ment unless the application is approved in writing bySnorkel.

Do not use the aerial platform as a crane, hoist, jack, orfor any purpose other than to position personnel, tools,andmaterials.

Do not climb on the guardrails or use ladders, planks, orother devices to extend or increase the work positionfrom the platform.

Take care to prevent rope, electrical cords, and hoses,etc., from becoming caught in or on the aerial platform. Ifthe platform or scissors structure becomes caught on anadjacent structure or other obstacle and is prevented fromnormal motion, reverse the control to free the platform. Ifcontrol reversal does not free the platform, evacuate theplatform before attempting to free it.

It is best not to transfer from the platform to another struc-ture or from the structure to the platform, unless that isthe safest way to do the job. Judge each situation sepa-rately taking the work environment into account. If it isnecessary to transfer from the platform to another struc-ture the following guidelines apply:

1. If you are using a fall restraint, transfer your anchor-age from one structure to the other before steppingacross.

2. Remember that youmight be transferring to a struc-ture where personal fall arrest is required.

3. Use the platform entrance, do not climb over orthrough the guardrails.

Electrical SystemCharge the batteries in awell-ventilated area free of flame,sparks, or other hazards that might cause fire or explo-sion.

Do not operate any of the aerial platform functions whilethe battery charger is plugged in.

AWarningBatteries give off hydrogen and oxygen that cancombine explosively. Death or serious injury couldresult from a chemical explosion. Do not smoke orpermit open flames or sparks when checking thebatteries.

Battery acid can damage the skin and eyes. Seri-ous infection or reaction can result if medical treat-ment is not given immediately. Wear face and eyeprotection when working near the batteries.

Batteries contain sulfuric acid that can damage your eyesor skin on contact. Wear a face shield, rubber gloves,and protective clothing whenworking around batteries. Ifacid contacts your eyes, flush immediately with clearwater and get medical attention. If acid contacts yourskin, wash off immediately with clear water.

Hydraulic SystemThe hydraulic system contains hoses with hydraulic fluidunder pressure.

ADangerHydraulic fluid escaping under pressure can haveenough force to inject fluid into the flesh. Seriousinfection or reaction will result if medical treatmentis not given immediately. In case of injury by escap-ing hydraulic fluid, seek medical attention at once.

Do not place your hand or any part of your body in front ofescaping hydraulic fluid.Useapieceof cardboard orwoodto search for hydraulic leaks.

Placards and DecalsThe aerial platform is equipped with placards and decalsthat provide instruction for operation and accident pre-vention. Do not operate the aerial platform if any placardsor decals are missing or not legible.

Chapter 3 Safety

8 S1930 0361527

S1930 0361527 9

This aerial work platform ismanufactured with safety de-vices, placards, and decals to reduce the likelihood of anaccident. For the safety of all personnel, do not disable,modify, or ignore any safety device. Safety devices areincluded in the daily prestart inspection.

AWarningThe potential for an accident increases when safetydevices do not function properly. Death or seriousinjury can result from such accidents. Do not alter,disable, or override any safety device.

If any safety devices are defective, remove the aerial plat-form from service until qualified maintenance personnelcan make repairs.

Emergency Stop ControlsThere is an emergency stop control at the lower and up-per controls.

At the lower controls, the emergency stop is a two-posi-tion push button (refer to Figure 4.1).

Push the emergency stop button in to disconnect powerto all control circuits. Pull the button out to restore power.

Figure 4.1 Lower Controls

NoteThe lower controls override the upper controls. If the up-per control emergency stop button is engaged, the lowercontrols can still be used to operate the aerial platform.

At the upper controls, the emergency stop is a two-posi-tion push button (refer to Figure 4.2).

Push the emergency stop button in to disconnect powerto the upper control circuits. Pull the button out to re-store power.

Chapter 4 Safety Devices

Figure 4.2 Upper Controls

Drive MotionAlarmWhen the joystick is moved out of neutral to drive theaerial platform, the alarm emits a loud beeping sound towarn personnel in the work area to stand clear.

Pothole Protector SkidsThe pothole protector skids automatically lower when theplatform is elevated approximately 24″ (61 cm). Groundclearance is reduced from 2 1/2″ (6.3 cm) to 3/4″ (1.9 cm)when the skids lock into position (refer to Figure 4.3).

Figure 4.3 Pothole Protector Skids

ADangerThe aerial platform can tip over if it becomes un-stable. Death or serious injury will result from a tip-over accident. Do not drive or position the aerialplatform for elevated use within four feet of anydrop-off, hole, or other tip-over hazard.

This protection system limits the tilt angle if a wheel isdriven into a drop-off or hole. This greatly reduces thelikelihood of the aerial platform tipping over.

The pothole protection system is for added protectionand does not justify operating near drop-offs or holes.


EmergencyStop Button

Emergency Stop Button


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Emergency Lowering LeverThe emergency lowering lever may be used to lower theplatform if there is a malfunction in the hydraulic or elec-trical system. The lever is mounted at the front of theaerial platform (refer to Figure 4.4).

Figure 4.4 Emergency Lowering Lever

The emergency lowering lever may be used to lower thescissors arms onto the safety prop before inspecting themachine. Push the lever down to lower the platform. Re-lease the lever to stop.

Safety PropThe safety prop (refer to Figure 4.5) is used to supportthe scissors structure when access to the scissors armcomponents or the chassis is required. Always use thesafety prop when the platform is raised during inspectionandmaintenance.

Figure 4.5 Safety Prop

Drive/Lift Pothole Protector InterlockThe aerial platform drive and lift functions are interlockedthrough a limit switch that senses whether or not thepothole protection linkage is locked into position. Thedrive/lift pothole interlock operates when the platform iselevated approximately 6′ (1.8 m).

If an obstruction under the skids, or some other impair-ment prevents the skids from locking into position, thedrive and lift functions will not operate and an alarm willsound.

Lower the platform and remove the obstruction when thedrive/lift pothole protector interlock alarm sounds.

Drive/Lift Level Sensor InterlockThe aerial platform drive and lift functions are interlockedthrough a level sensor system. The drive/lift level sensorinterlock operates when the platform is elevated approxi-mately 6′ (1.8 m).

If the chassis is tilted more than two degrees side-to-side ormore than four degrees front-to-rear, the drive andlift functions will not operate and an alarm will sound.

Lower the platform and drive to a level surface when thedrive/lift level sensor alarm sounds.

The drive/lift level sensor system is for added protectionand does not justify operating on anything other than firm,flat, level surfaces.

LoweringAlarmWhen the joystick is moved out of neutral to lower theplatform, the alarm emits a loud beeping sound to warnpersonnel in the work area to stand clear.

ADangerPinch points exist on the scissors structure. Deathor serious injury will result if the scissors structurelowers onto personnel within the scissors arms orunder the raised platform. Stand clear while rais-ing and lowering the platform.

Be careful when lowering the platform. Keep hands andfingers away from the scissors structures components.

Safety Prop

EmergencyLowering Lever


S1930 0361527 11

GuardrailsThe guardrail system includes a top rail, mid rail, andtoeboards around the sides of the platform (refer to Fig-ure 4.6).

Figure 4.6 Platform

A safety chain or an optional swinging gate allows foraccess to the platform. The gate closes automaticallyafter entering or exiting the platform. The chain or gate ispart of the guardrail system and must be securely fas-tened after entering the platform.

Ground Fault Circuit InterrupterThe electrical power outlet (refer to Figure 4.7), at theplatform contains a ground fault circuit interrupter (GFCI)to provide protection for personnel.

Figure 4.7 Electrical Power Outlet

TiltAlarmAn alarmwill sound if the aerial platform chassis is out oflevel more than two degrees side-to-side or four degreesfront-to-rear when the platform is raised.

ADangerThe aerial platform can tip over if it becomes un-stable. Death or serious injury will result from a tip-over accident. Do not drive or position the aerialplatform for elevated use near any drop-off, hole,slope, soft or uneven ground, or other tip-over haz-ard.

Completely lower the platform and then drive to a levelsurface when the tilt alarm sounds.

The tilt alarm is for added protection and does not justifyoperating on anything other than firm, flat, level surfaces.

HornThe optional hornmay be used to warn personnel on theground. The horn is operational when themachine is setup for operation from the upper controls.

Flashing LightAn optional red or amber flashing light may be located atthe rear of the aerial platform. The flashing light warnspersonnel that the aerial platform is in the area.

The light flashes at about one flash per second when themachine is set up for operation from the upper controls.

Top Rail

Mid Rail

Toeboard

Entry Chain


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The aerial platform is equipped with several gauges tomonitor the condition of the machine before and duringoperation.

Hour MeterThe hour meter is located on the lower control panel (re-fer to Figure 5.1). It measures the accumulated aerialplatform operating time.


AmmeterThe ammeter is located on the battery charger (refer toFigure 5.2). When the batteries are charging, the amme-ter displays the level of current flow from the charger tothe batteries.

Figure 5.2 Battery Charger

Battery Condition IndicatorThe optional battery condition indicator (refer to Figure5.3) is located on the upper control panel. It displays thelevel of available battery power to operate the aerial plat-form. The number one on the scale indicates full powerand zero indicates no power.


Chapter 5 Gauges and Displays

Hour Meter

Ammeter

Battery Condition Indicator

Chapter 5 Gauges and Displays

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S1930 0361527 15

It may take from 1 1/2 to 16 hours to recharge the batter-ies depending on the amount of discharge. If the charg-ing cycle exceeds 16 hours without the batteries beingfully recharged, shut off the charger and have the batter-ies checked.

Use the following procedure to charge the batteries.

1. Turn the battery disconnect switch off (refer to Figure6.1). The switch is next to the latch on the batterytray.

Figure 6.1 Battery Tray

2. Check the battery water level.Addwater to individualcells only if the plates are exposed. Replace the bat-tery caps.

3. Plug the charger into a properly grounded outlet (115volt AC, 60 Hz) using a 3 conductor, 14 gauge orlarger extension cord. The extension cord must beas short as possible and in good electrical condition.The charger will turn on three to five seconds after acomplete electrical connection is made. The amme-ter (refer to Figure 6.1) will indicate near 20 ampsinitially then taper off to 5 to 10 amps as the batter-ies charge.

NoteIf the batteries are fully charged when the charger isplugged in, the ammeter will initially read 15 to 20 ampsthen quickly read zero.

4. Leave the charger plugged in until it shuts itself off.

5. Unplug the extension cord after the battery chargerturns itself off. Allow the batteries to cool off aftercharging.

6. Check the battery water level.Addwater to individualcells only if the plates are exposed. Replace the bat-tery caps.

Chapter 6 Batteries

The battery tray contains 4, 220 amp hour, 6 volt batter-ies. These batteries supply 24 volt DC electrical power tooperate the aerial platform drive and platform control sys-tems. Proper machine operation depends on well main-tained and charged batteries.

General MaintenanceAlways keep the batteries clean, free of dirt and corro-sion.A film on top of the battery can accelerate discharge.

Cold reduces battery capacity and retards charging. Heatincreases water usage and can result in overcharging.Very high temperatures can cause thermal run awaywhichmay lead to an explosion or fire. Consult a battery chargerspecialist if extreme temperature use is unavoidable.

AWarningBattery acid can damage the skin and eyes. Seriousinfection or reaction can result if medical treatmentis not given immediately. Wear face and eye pro-tection when working near the batteries.

Use distilled water to refill the batteries.Avoid water con-taining metallic solids such as iron.

ChargingFully recharge the batteries, immediately after use. Onecharging cycle per day is preferred. Fully charged batter-ies perform best. The deeper the discharge, the fewernumber of cycles a battery will deliver. Deep dischargesdeteriorate the battery quicker than light shallow cycles.

An overly discharged battery may need to be cycled afew times before it can fully recover. If a battery begins toheat before becoming fully charged, it may be necessaryto recharge and discharge the battery a few times.

The aerial platform is equipped with an automatic batterycharger that will completely recharge the batteries andturn off after the charge cycle is completed.

AWarningBatteries give off hydrogen andoxygen that can com-bine explosively. Death or serious injury can resultfrom a chemical explosion. Charge the batteries onlyin a well ventilated area away from sparks or flame.

ACautionThe batteries can be overcharged and/or damagedif the charger fails to shut off automatically. Do notleave the battery charger on for more than two days.

Battery Disconnect Switch

Chapter 6 Batteries

16 S1930 0361537

S1930 0361527 17


Emergency Stop ButtonThe emergency stop is a two-position push button. Pushthe button in to disconnect power to all control circuits.Pull the button out to restore power.

Control Selector SwitchPlace the control selector switch in the down position tooperate aerial platform functions from the lower controls.The upper controls will not operate while the control se-lector is in the lower position.

Place the selector switch up in the upper control positionto operate the aerial platform functions from the uppercontrols.

Platform Raise/Lower SwitchPull up on the platform switch toward the white arrow toraise the platform. Release the switch when the desiredheight is reached.

Push down on the switch toward the black arrow to lowerthe platform. The lowering alarm will sound as the plat-form lowers.

Upper ControlsThe upper controls (refer to Figure 7.3) are located on thecontrol box at the platform. The following controls arelocated at the upper control station.

Emergency stop button Drive/lift selector switch Joystick to control platform lift, drive and steer

The optional horn button and battery condition indicatorgauge may also be located at the upper control station.

Controls to position the platform are located on the lowercontrol panel on the chassis and on the upper controlpanel in the platform. Drive controls are located on theupper control panel only.

Battery Disconnect SwitchThe battery disconnect is located next to the latch on thebattery tray (refer to Figure 7.1).

Figure 7.1 Battery Disconnect Switch

The battery disconnect switch removes electrical powerfrom all electrically controlled functions when in the offposition. Place the switch in the on position to operateany electrically controlled function.

ACautionOnly authorized personnel should operate the aerialplatform. Unqualified personnel may cause injuryto coworkers or property damage. Lock the batterydisconnect switch in the off position before leavingthe aerial platform unattended.

Lock the battery disconnect switch in the off position toprevent unauthorized use of the aerial platform.

Lower ControlsThe lower controls (refer to Figure 7.2) are located on theleft side of the chassis. Only platform functions can beoperated from the lower controls. The following controlsare located on the lower control panel.

Emergency stop button Control selector switch Platform raise/lower switch

Chapter 7 Controls

Battery Disconnect Switch


Control Selector Switch

Platform Raise/Lower Switch

Chapter 7 Controls

18 S1930 0361527


Emergency Stop ButtonThe emergency stop is a two-position red push button onthe front of the upper control box. Push the button in todisconnect power to all control circuits at the upper con-trols. Pull the button out to restore power.

NoteThe lower controls override the upper controls. If the up-per control emergency stop is engaged the lower con-trols can still be used to operate the aerial platform.

Push the button in when the upper controls are not in useto help protect against unintentional platform operation.

Drive/Lift Selector SwitchPlace the drive/lift selector switch in the drive position todrive the aerial platform using the joystick. The platformwill not raise or lower while driving.

Place the drive/lift selector switch in the lift position toraise and lower the platform using the joystick.

JoystickUse the joystick (refer to Figure 7.3) to operate the fol-lowing functions.

Aerial platform steering Aerial platform drive and speed Platform raise/lower and speed

Movement of the joystick in a given direction produces acorrespondingmovement of the aerial platform. The steer-ing and drive functions may be operated separately orsimultaneously.

InterlockThe joystick has an interlock switch in the handle. En-gage the interlock by grasping the joystick and pullingthe switch toward the handle. Engage the interlock toactivate the steering, drive, or lift functions.

Steer SwitchThe steer switch is a momentary contact, rocker switchon top of the joystick. This switch controls the two frontwheels to steer the aerial platform.

To steer to the right, engage the interlock on the joystickand hold down the right side of the steer switch. To steerto the left, engage the interlock on the joystick and holddown the left side of the steer switch.

NoteThe steering wheels are not self-centering. Set the steer-ing wheels straight ahead after completing a turn.

HornButtonThe optional horn button is on the left side of the uppercontrol box. Press the button to sound the horn.

Battery Condition IndicatorThe optional battery condition indicator gauge is on thetop of the upper control box. It indicates the level of avail-able battery power to operate the aerial platform.

Circuit Breaker Reset ButtonThe electrical power outlet at the platform has a 15 ampcircuit breaker. The reset button in on the bottom of theelectrical box. The circuit breaker protects the electricalwiring andcomponents fromelectrical overload in the caseof a short circuit or other fault.

ACautionA tripped circuit breaker indicates a malfunction inthe electrical system. Component damage can re-sult if the cause of the malfunction is not corrected.Do not operate the aerial platform if the circuitbreaker trips repeatedly.

Push the reset button to reset the circuit breaker.

Steer Switch

Joystick


Interlock Switch

Drive/Lift Selector Switch

S1930 0361527 19

Chapter 8 Prestart Inspection

Potential service and safety problems may be detectedby inspecting the aerial platform. This chapter includesinformation on properly inspecting the aerial platform andincludes a prestart inspection check list at the end of thechapter to ensure that no areas are overlooked.

AWarningThe potential for an accident increases when oper-ating an aerial platform that is damaged or mal-functioning. Death or serious injury can result fromsuch accidents. Do not operate the aerial platformif it is damaged or malfunctioning.

Perform a prestart inspection at the beginning of eachshift, before using the aerial platform on the job. The in-spection site must have a smooth and level surface.

Operators ManualThe manual holder is located at the inside the platform(refer to Figure 8.1) at the front of the machine. Makecertain it is securely fastened in place.

Figure 8.1 Operators Manual Holder

Check to see that the proper Operators Manual is in theholder. The manual should be complete with all pagesintact and in readable condition.

Electrical SystemElectrical power is supplied from 4, 220 amp hour, 6 voltbatteries. These batteries supply 24 volt DC electricalpower to operate the aerial platform drive and control sys-tem.

AWarningBatteries give off hydrogen and oxygen that cancombine explosively. Death or serious injury canresult from a chemical explosion. Do not smoke orpermit open flames or sparks when checking thebatteries.

ACautionEven with low voltage electrical systems, severearcing can occur. Electrical shock or componentdamage can result from contact with energized con-ductors. Use caution when working with any elec-trical device.

The batteries are in the swing-out tray on the left side ofthe aerial platform.

Battery Fluid LevelRemove the caps from each battery (refer to Figure 8.2).Visually check the battery fluid level. If the level is notwithin 1/4″ (0.6 cm) of the bottom of the filler neck insideeach hole, add distilled water.

Figure 8.2 Batteries

Replace the caps on the batteries. The caps must be inplace and tight during machine operation and batterycharging.

Battery TerminalsCheck the top of the batteries, the terminals, and cableends (refer to Figure 8.2). They should be clean and freeof corrosion and dirt. Clean the top of the batteries if nec-essary. Clean the terminals and cable ends with a wirebrush or terminal cleaning tool. All cable ends must besecurely fastened to the terminals.

Battery ChargerInspect the battery charger (refer to Figure 8.3) to ensurethat it is operating properly.

1. Turn the battery disconnect switch off.

2. Plug the charger into a source of power.

3. Observe the reading on the ammeter. The readingshould be 20 amps.

Manual Holder

CapsTerminals


20 S1930 0361527

Figure 8.3 Battery Charger

4. Unplug the charger.

Safety PropUsing the lower controls, raise the platform until the openheight between the arm pins is wide enough to positionthe safety prop. Refer to Figure 8.4.

Figure 8.4 Safety Prop

Swing the safety prop downward from the storage posi-tion to the support position. Inspect the safety prop fordamage and deformation.

Always use the safety prop when the platform is raisedduring inspection andmaintenance.

ADangerPinch points exist on the scissors structure. Deathor serious injury will result if the scissors structuredrops onto personnel working within the scissorsarms or under the raised platform. Properly posi-tion the safety prop before reaching through thescissorsstructure.

Safety Prop

When inspecting or servicing the aerial platform with theplatform raised, use the following procedure to properlyposition the safety prop.

1. Remove all tools andmaterial from the platform.

2. Using the lower controls, raise the platform until theopen height between the arm pins is wide enough toposition the safety prop. Refer to Figure 8.4.

3. Swing the safety prop downward from the storageposition to the support position.

4. Remove hands and arms from the scissors structurearea.

5. Lower the platform until the scissors are supportedby the safety prop.

Use the following procedure to stow the safety prop.

1. Using the lower controls, raise the platform until theopen height between the arm pins is wide enough tomove the safety prop.

2. Swing the safety prop up to the stowed position.

Cables and Wiring HarnessInspect all cables andwiring forwear and/or physical dam-age such as loose connections, broken wires, and frayedinsulation. Check the wiring in areas where a change inrouting directionmay cause them to become pinched (re-fer to Figure 8.5). Make sure the cables and wires areproperly routed to avoid sharp edges, pinching, and scuff-ing.

Figure 8.5 Cables and Wiring Harness

Ammeter

Cables and Wiring


S1930 0361527 21

Hydraulic SystemHydraulic power is supplied from a single stage hydraulicpump with a 4.25 horsepower DC electrical motor.

ADangerHydraulic fluid escaping under pressure can haveenough force to inject fluid into the flesh. Seriousinfection or reaction will result if medical treatmentis not given immediately. In case of injury by escap-ing hydraulic fluid, seek medical attention at once.

The hydraulic reservoir, pump, filter, and control valve arelocated in the hydraulic tray on the right side of the chas-sis.

Fluid LevelCheck the hydraulic fluid level with the aerial platform ona level surface and the platform stowed. The fluid levelmust be between the add and full marks (refer to Figure8.6).

Figure 8.6 Hydraulic Tray

ACautionNot all hydraulic fluid is suitable to use in the hy-draulic system. Some have poor lubricating char-acteristics and can increase component wear. Onlyuse hydraulic fluid as recommended.

If necessary, remove the filler cap and add fluid of theproper type. Refer to Chapter 2 Specifications for theproper type and grade of hydraulic fluid to use. The needto regularly add fluid indicates a leak that should be cor-rected.

Hoses, Tubes, and FittingsInspect all hydraulic hoses, tubes, and fittings for wear,leakage, or damage (refer to Figure 8.7). Make sure thehoses are properly routed to avoid sharp edges, kinking,and scuffing. Inspect the tubes for dents or other damagethat may restrict fluid flow.Make sure all hoses and tubesare held firmly in their support brackets.

Figure 8.7 Hoses, Tubes, and Fittings

Hydraulic fluid leaks are easily visible on the ground.Check under the chassis for fluid that has leaked.

Free-Wheeling ValveThe free-wheeling valve is located on the hydraulicmani-fold (refer to Figure 8.8) on the hydraulic tray. Check thefree-wheeling valve to make sure it is fully closed (clock-wise).

Figure 8.8 Free-Wheeling Valve

Fluid Level Indicator

Free-Wheeling Valve


22 S1930 0361527

Lower Control StationWith no personnel in the platform, test the operation ofeach control from the lower control station (refer to Fig-ure 8.11).


Operating ControlsUse the following procedure to operate themachine fromthe lower controls.

1. Turn the battery disconnect switch on.

2. At the lower controls, pull the emergency stop switchoutward to the on position.

3. Place the controls selector downward in the lowercontrols position.

ADangerPinch points may exist between moving compo-nents. Death or serious injury will result from be-coming trapped between components, buildings,structures, or other obstacles. Make sure all person-nel stand clear of the aerial platform while perform-ing the prestart inspection.

Test the operation of the platform raise/lower switch inboth directions.

Place the battery disconnect switch in the off position.The platform should not raise or lower with the discon-nect in this position.

Emergency StopPush the emergency stop button in to turn off the electri-cal power. The lower control functions should not operatewith the emergency stop in this position.

LoweringAlarmRaise the platform and then lower it to ensure that thealarm sounds to warn personnel in the area that the plat-form is lowering.

Tires and WheelsVisually inspect the tires (refer to Figure 8.9). They shouldbe smooth without any cuts, gouges, or missing rubberthat might affect aerial platform stability.

Figure 8.9 Tires and Wheels

Check the wheel lug nuts to see that none are missing,damaged, or loose.

Parking BrakesInspect the brake release cams for rust, dirt, and properorientation. When the brakes are engaged the releasecams should swing freely when pushed with a finger andbe oriented as shown in Figure 8.10.

Figure 8.10 Rear of Chassis

Ground StrapMake certain the ground strap (refer to Figure 8.10) issecurely fastened to the chassis. It should be long enoughto contact the ground surface to eliminate static electric-ity from the machine.

Ground Strap

Brake Cam





S1930 0361527 23

7. The board will prevent the skid from lowering fully.Raise the platform.When the skid contacts the board,the platform should stop raising and an alarm shouldsoundat approximately 6′ (1.8m) platform floor height.The alarm should then sound when the platform liftswitch is activated and the platform should not raise.

8. Lower the platform. Place the board under the skidon the right side.

9. Raise the platform.When the skid contacts the board,the platform should stop raising and an alarm shouldsoundat approximately 6′ (1.8m) platform floor height.The alarm should then soundwhen the platform raiseswitch is activated and the platform should not raise.


10. If the platform raise function is not disabled, or thealarmdoes not sound remove the aerial platform fromservice until the problem is corrected.

Emergency LoweringUsing the lower controls, fully raise the platform. Locatethe emergency lowering lever (refer to Figure 8.14) at thefront of the aerial platform.

Figure 8.14 Front of Chassis

While standing clear of the scissors structure, push thelever down. The platformwill begin to lower as the lever ispushed down. Release the lever to stop. Make certainthe lever is fully released after lowering the platform.

Pothole Protector InterlockPerform this test using the lower controls.

1. Stow the aerial platform on a smooth, flat, level con-crete slab.

2. Remove all persons andmaterials from the platform.

3. With the trays closed, check the ground clearanceunder thepothole protector skids (refer toFigure8.12).Clearance should be at least 2 3/4″ (7 cm) on bothsides of the aerial platform.

Figure 8.12 Pothole Protector Skid

4. Raise the platform while watching movement of theskids. The skids should lower to approximately3/4″ (2 cm) ground clearance when the platform israised approximately 24″ (61 cm).

5. Fully lower the platformwhile watchingmovement ofthe skids. The skids should raise to their stowedposition, with about 2 3/4″ (7 cm) ground clearance,when the platform is fully lowered.

6. Place a 1 1/2″ (3.8 cm) thick board, such as a 2 x 4,under the skid on the left side (refer to Figure 8.13).

Figure 8.13 Pothole Protector Skid



2 x 4

EmergencyLowering Lever


24 S1930 0361527

Figure 8.16 Platform Slide Blocks

There is one slide block on each side of the platform. Theslide blocks must be in good condition and free to movewithout obstruction.

FastenersVisually inspect all fasteners to see that none are miss-ing or loose.

Pay particular attention to all of the bolts, nuts, roll pins,collars, and snap rings that connect the scissors arms.They should all be present, tight, and not damaged inany way.

Upper Control StationInspect the platform and upper controls only if all func-tions operated properly from the lower controls.

Guardrail SystemThe guardrail system (refer to Figure 8.17) includes thetop rail, mid rail, toeboards and an entry chain or optionalswinging gate.

Figure 8.17 Guardrail System

Inspect all components of the guardrail system. The railsand toeboards must all be in place and free of any dam-age or deformation. Visually check the rail and toeboard

StructuresVisually inspect all mechanical structures including theweldments and related components. It is important toinspect the fasteners that connect the components.

WeldmentsVisually inspect all weldments for abnormal wear, abra-sion, or deformation that could cause interference be-tweenmoving parts.

Inspect thewelds on the structural components. The areatobe inspected shouldbecleanand freeof dirt andgrease.Look for visible cracks in the weld and at the weld toparent material joint. A bright light may be used to pro-vide adequate visibility of the inspection area.

Pay close attention to welds in areas where changes incross section take place and near the attachment pointsof highly loaded components.

Slide BlocksVisually inspect the scissors arm slide blocks (refer toFigure 8.15). The slide blocksmust be free tomovewith-out obstruction. There is one slide block on each side ofthe chassis.

Figure 8.15 Scissors Arm Slide Blocks

Raise the platform from the lower controls to visually in-spect the slide blocks underneath the front of the plat-form (refer to Figure 8.16).

Slide Block

Top Rail

Mid Rail

Toeboard

Entry Chain

Slide Block


S1930 0361527 25


Place the battery disconnect switch in the on positionand from the lower controls, place the control selectorupward in the upper controls position. Pull the emergencystop button outward to turn on the electrical power to theupper controls.

From the upper controls, test the interlock bymoving thejoystick without engaging the interlock switch. If move-ment occurs the interlock is not functioning properly. Donot operate the machine until the problem is corrected.

Place the drive/lift selector switch in the drive positionand test the operation of the joystick in both directions.The lift functions should not operate with the selector inthe drive position.

Place the drive/lift selector switch in the lift position andtest the operation of the joystick in both directions. Thedrive functions should not operate with the selector in thelift position.

Emergency StopPush the emergency stop button in to turn off the electri-cal power. The upper control functions should not oper-ate with the emergency stop in this position.

Lowering AlarmRaise the platform and then lower it to ensure that thealarm sounds to warn personnel in the area that the plat-form is lowering.

Drive Motion AlarmDrive in both the forward and reverse directions to ensurethat the alarm sounds to warn personnel in the area thatthe aerial platform is in motion.

welds for cracks. All bolts and nuts fastening the guard-rails in place must be present and not show any signs oflooseness.

Inspect the entry chain to be sure it is present and se-curely fastened to the rail. The chain must be free ofdamage and deformation that may prevent if from func-tioning properly. Inspect the hook and eye that securesthe chain to the rail.

Inspect the optional swinging gate to see that it swingsfreely, closes firmly, and is not deformed in anyway.Makesure the gate is secure when its closed.

Inspect the wallboard loading gate to see that it swingsfreely, closes firmly, and is not deformed in anyway.Makesure the gate is secure when it is closed.

Platform ExtensionA pin at the right front of the platform secures the exten-sion deck and the upper controls to the main platformdeck.

ACautionThe extension deck is free to move when the pin isremoved. Make certain the pin is in place when thedeck is extended in the working position and whenit is stowed.

Inspect the pin (refer to Figure 8.18) to ensure that itproperly secures the extension deck. Release the pin toextend the platform. Extend the platform while checkingfor proper operation.

Extend the platform and inspect the weldments for defor-mation and damage. Visually check the platform weldsfor cracks.

Figure 8.18 Platform Extension Pin

Operating ControlsWith the aerial platform stowed, test the operation of eachcontrol from theupper control station (refer to Figure 8.19).

Pin

Horn

Steer Switch

Joystick


Interlock Switch



26 S1930 0361527

Electrical Power OutletConnect a source of 125 voltACpower to the power-inputconnector at the rear of the chassis. Plug an electricaltool into the receptacle and try to operate the tool toverify proper operation of the outlet.

Use the following procedure to test the ground fault cir-cuit interrupter GFCI.

1. Push the test button (refer to Figure 8.20).


2. Plug an electrical tool into the outlet and verify thepower is off.

If the power was off, push the reset button torestore power.

If the power was on, repair or replace thereceptacle.

Flashing LightIf themachine is equippedwith the optional flashing light,visually check to see that it flashes. The light shouldflash when power is turned on to operate the machine.

Battery Condition IndicatorThe optional battery condition indicator (refer to Figure8.21) is located on the upper control panel.


With themachine set up for upper control operation, checkto see that the gauge displays a power reading.

Placards and DecalsInspect all safety and operational placards and decals.Make certain they are in place, in good condition, andare legible. The placards and decals may be cleanedwith soap and water, and a soft cloth if the words or pic-tures cannot be seen.

ACautionSolvents may contain hazardous ingredients. Fol-low themanufacturers label for proper use and dis-posal. Wear protective gloves and splash-proofsafety glasseswhen using solvents.

Wet paint overspraymay be removed using a natural bio-degradable solvent and a soft cloth. Replace any miss-ing or illegible placards or decals before operating theaerial platform. Placard and decal kits are available fromSnorkel.

The safety related placards and decals are illustrated onthe following pages.

Reset Button Test Button

Battery Condition Indicator

Chapter 8 – Prestart Inspection

S1930 – 0361527 27

Right Side

Rear

300740

0361259

0372000

0074311

0361259

300740

0372000

0074311

0070901(Inside hydraulic tray)

0070901

DEATH OR SERIOUS INJURY CAN RESULT FROM TIPPING OVER.TO KEEP FROM TIPPING THIS MACHINE OVER FOLLOW THESE RULES.

OTHER ACTIONS CAN ALSO CAUSE THIS MACHINE TO TIP OVER

NOTE: STUDY THE OPERATOR'S MANUALBEFORE OPERATING THIS MACHINE.

0372000

DO NOTDO NOTDO NOTDO NOTDO NOT

override safety devices.

overload the machine.

stand or sit on guardrails.

attach ropes or chains to guardrails.

carry loads outside the railing or use as a crane.

DO NOT use this machine without the railings and the entry gate, chain or bar in place. You could fall out and hurt or kill yourself.

DO NOT use this machine if it is not working right, or if any part of it is damaged, worn, or missing. An accident could cause injury or death.

DO NOT

DO NOT

let an untrained or unauthorized person use this machine. When you leave the machine unattended, remove the key, or turn off the battery switch on the base of the machine and lock the battery switch in the off position. replace components critical to machine stability, such as batteries and wheel equipment, with lighter weight or non-factory approved substitutes.

DO NOT

DO NOT

DO NOT

ride platform while machine is on a truck, fork lift or other device.

use ladder, scaffold, or other means to increase size or platform height.

use with damaged tires or wheels.

DO NOT RAISE OR DRIVE AN ELEVATEDPLATFORM ON

SOFT OR UNEVENSURFACES

DO NOT RAISE OR DRIVE AN ELEVATEDPLATFORM ON A

SLOPE

GO NO CLOSER THAN 4 feet (1.2m)to ANY DROP OFF

OR HOLE

4 FT

OK

1. 3.2.

ALARM MEANS TIPOVER DANGER!LOWER PLATFORM IMMEDIATELY

TO AVOIDTIPOVER HAZARDS

USE ONFLAT, LEVEL, ANDSOLID SURFACES

ONLY4 FT

OK

ELECTRICAL SHOCK CAN KILL YOUThis machine is not electrically insulated. Maintain 10 feet minimum clearance from electrical power lines and apparatus.

Allow for platform sway, rock, or sag. If voltage is 300 V to 50 kV stay at least 10 feet (3.1m) away. If voltage is more than 50 kV talk with your supervisor or read the Operator's Manual on this machine for safe distances.

This machine will not protect you from shock.

DO NOT RAISE THE PLATFORMIN WIND ABOVE 28 MPH (12.5 M/S)


28 S1930 0361527

Front

Left Side

0361259

451986

0074311(Rod end of lift cylinder)

300700

300760 451986

0361259

300760

300700

0074311


S1930 0361527 29

Item Inspect For Ok

Operators Manual Inmanual holderElectrical SystemBattery fluid level Proper levelBattery terminals Clean, connectors tightBattery charger Proper operationCables and wiring harness No wear or physical damage

Hydraulic SystemFluid level Between full and addmarksHoses, tubes, and fittings No leaksFree-wheelingvalve Fully closed

Tires and Wheels Good conditionParking Brakes Proper cam operationGround Strap In place and securely fastenedLower Control StationOperating controls Proper operationEmergency stop Shuts off lower controlsLowering alarm Sounds when platform lowers

Pothole Protection Interlock Proper operationEmergency Lowering Proper operationSafety Prop No damage or deformationFlashing Light Proper operationStructuresWeldments Welds intact, no damage or deformationSlide pads In place, no damage or deformationFasteners In place and tight

Upper Control StationGuardrail system Welds intact, no damage or deformationPlatform extension Proper operationOperating controls Proper operationEmergency stop Shuts off upper controlsLowering alarm Sounds when platform lowersDrivemotion alarm Soundswhen aerial platformmovesElectrical power outlet Proper operationBattery condition indicator Proper operationHorn Soundswhen activated

Placards and Decals In place and readable

Prestart Inspection Checklist


30 S1930 0361527

S1930 0361527 31

Lower ControlsThe lower controls override theupper controls. Thismeansthat the lower controls may be used to operate the plat-form regardless of the position of the upper controls emer-gency stop button.

Only the platform raise and lower functionsmay be oper-ated from the lower controls. The lower controls may beused for initial set up of the aerial platform and for posi-tioning the platform while testing or during inspection.

Use the following procedure to raise or lower the platformusing the lower controls.

1. Pull the emergency stop button outward (refer to Fig-ure 9.1).


2. Place the control selector switch in the lower posi-tion.

3. Hold the platform raise/lower toggle switch up to raisethe platform and down to lower it.

4. Release the toggle switch to stop movement.

Upper ControlsThe upper controls (refer to Figure 9.2) may be used fordriving the aerial platform and positioning the platformwhile on the job.

Before operating from the upper controls, properly set upthe aerial platform as described under Preparing for Op-eration. Use the following procedure to operate the aerialplatform from the upper controls.

1. From the lower controls, pull the emergency stopbutton outward (refer to Figure 9.1).

2. Place the control selector switch in the upper posi-tion.

NoteThe upper controls will not operate while the control se-lector is in the lower position.

Chapter 9 Operation

The aerial platformmay be operated fromeither the loweror upper controls.

ADangerThe aerial platform is not electrically insulated.Death or serious injury will result from contact with,or inadequate clearance from, an energized con-ductor. Do not go closer than the minimum safe ap-proach distance as defined by ANSI.

Pinch points may exist between moving compo-nents. Death or serious injury will result from be-coming trapped between components, buildings,structures, or other obstacles. Make sure there issufficient clearance around the machine beforemoving the chassis or platform.Allowsufficient roomand time to stop movement to avoid contact withstructures or other hazards.

The aerial platform can tip over if it becomes un-stable. Death or serious injury will result from a tip-over accident. Operate the aerial platform on a firm,flat, level surface. Avoid travel speeds and/or roughterrain that could cause sudden changes in platformposition. Do not drive or position the aerial platformfor elevated use near any drop-off, hole, slope, softor uneven ground, or other tip-over hazard. Do notraise the platform in the wind speeds above 28mph(12.5m/s).

The platform rated work load is the total weight of thepersonnel and equipment that may be lifted in the plat-form. The work loads are stated on the platform ratingplacard mounted at the rear of the platform.

ADangerThe aerial platform can tip over if it becomes un-stable. Death or serious injury will result from a tip-over accident. Do not exceed the capacity valuesindicated on the platform rating placard.

Capacity values indicate the rated lifting capacity and donot indicate aerial platform stability.

The operator bears ultimate responsibility for ensuringthat the aerial platform is properly set up for the particularconditions encountered.

Preparing for OperationMake certain the batteries are charged and the chargeris unplugged before operating the aerial platform. Usethe following procedure to prepare the aerial platform foroperation.

1. Perform a prestart inspection (refer to Chapter 8).

2. Close and latch the battery and hydraulic trays.

3. Place the battery disconnect switch in the on posi-tion.




Chapter 9 Operation

32 S1930 0361527


3. Enter the platform and secure the chain, or optionalswinging gate.

4. Pull the emergency stop button out.

5. The aerial platform may be driven and the platformmay be raised and lowered from the upper controls.

Driving

ADangerThe aerial platform can tip over if it becomes un-stable. Death or serious injury will result from a tip-over accident. Do not drive an elevated aerial plat-form on soft, uneven, or sloping surfaces. Do notdrive a fully stowedmachine on grades that exceed20 percent.

A fully stowedmachinemay be operated on grades up to20 percent. Agrade of 20 percent is a 24″ (0.61 m) verti-cal rise in 10′ (3.05 m) horizontal length.

AWarningDeath or serious injury can result from improperlydriving or steering the aerial platform. Read andunderstand the information in this manual and onthe placards and decals on the machine before op-erating the aerial platform on the job.

Use the following procedure to operate the drive func-tions.

1. Place the drive/lift selector switch (refer to Figure 9.2)in the drive position.

2. Squeeze and hold the interlock switch against thejoystick.

Tomove forward, slowly push the joystick forward.

To move backward, slowly pull the joystick back-ward.

Drive SpeedsThe drive speed is proportional to the joystick position.The farther the joystick is moved, the faster the travelspeed.

Drive speed ranges are interlocked through a limit switchthat senses scissors arm position. When the platform iselevated below approximately seven feet, the aerial plat-formmay be driven within the full range of drive speeds.Above 6′ (1.8m) of elevation, only the slowest drive speedwill work.


Do not use the aerial platform if it drives faster than 0.4mph (0.6 km/h), which is 17′ 7″ (5.3 m) in 30 seconds,when elevated above 6′ (1.8m).

Drive/Lift Level Sensor InterlockWhen the platform is elevated above 6′ (1.8 m), lift anddrive functions are interlocked through a level sensor sys-tem. If the chassis is tilted more than two degrees side-to-side or more than four degrees front-to-rear, platformraiseanddrive functionsaredisabledandanalarmsoundswhen those controls are activated.

If the drive/lift level sensor interlock shuts off the platformraise and drive functions, lower the platform and drive to alevel surface.

Platform raise and drive functions may also be disabledby the pothole protection interlock.

SteeringThe steer control switch is located on the joystick (referto Figure 9.2). Use the following procedure to steer theaerial platform using the upper controls.


To turn to the left, tap lightly on the left side of thesteer switch.

To turn to the right, tap lightly on the right side ofthe steer switch.

Steer Switch

Joystick


Interlock Switch


Chapter 9 Operation

S1930 0361527 33

NoteHolding the steer switch down too long may result in asharp turn. This is especially true when driving and steer-ing at the same time. It may be easier to turn the wheelsin small increments using a series of quick taps on thesteer switch.

2. Set the steer wheels straight ahead after completinga turn. The steering wheels are not self-centering.

PlatformUse care when entering and exiting the platform to avoidslipping and/or falling. Securely close the safety chain oroptional swinging gate when the platform is occupied.

Raising and LoweringThe raise speed is proportional to the joystick position.The farther the joystick is moved, the faster the platformraises. There is only one lowering speed.

1. Place the drive/lift selector switch (refer to Figure 9.2)in the lift position.


To raise the platform, slowly pull the joystick backuntil the desired speed is reached.

To lower the platform, push the joystick forward.

ExtendingThe platform can be extended and securely locked intoposition. Use the following procedure to extend or retractthe platform.

ACautionThe extension deck is free to move when the pin isremoved. Personal injury may result from extend-ing the platform deck while the aerial platform ison a slope. Do not attempt to extend or retract theplatform unless the aerial platform is on a level sur-face.

1. Remove the pin from the top rail on the right side ofthe platform (refer to Figure 9.3).

2. Stand on the main deck of the platform, facing thefront of the platform. Grasping the top rail of the ex-tension deck, push forward to extend the deck.

Figure 9.3 Platform

3. Replace the pin when the platform is extended tolock it in place.

4. Try tomove the rails back and forth tomake sure theplatform extension deck is locked in position.

BrakesEach rear wheel is equipped with a mechanical spring-applied, hydraulically released parking brake. When thedrive control is in neutral, a spring-activated pin (refer toFigure 9.4) protrudes through an opening in the brakedisc to prevent movement.A flow control valve slows thepin movement to allow the aerial platform to stop beforethe parking brakes engage.


This system operates automatically to stop and hold theaerial platformwhen the drive control is released or poweris interrupted.Manually disengage the brakes before tow-ing or winching the aerial platform as described underTowing in Chapter 11 Emergency Operation.

Swing-Out TraysBatteries and hydraulic components are enclosed inswing-out trays (refer to Figure 9.5) on each side of thechassis.

Extension Pin

Brake Pins

Chapter 9 Operation

34 S1930 0361527

Figure 9.5 Swing-Out Tray

The tray on the right side of the chassis contains thelower controls, the hydraulic directional control valve, thepump, free-wheeling valve, and the hydraulic fluid filter.The tray on the left side contains the four batteries andthe battery charger.

ADangerThe aerial platform can tip over if it becomes un-stable. Death or serious injury can result from a tip-over accident. Do not open the trays when the plat-form is raised more than eight feet.

To open a tray, push down on the latch and swing thetray open.

Electrical Power OutletThe electrical power outlet has two, 3-prong, 125 voltACelectrical connectors (refer to Figure 9.6). Their combinedoutput is limited by a 15 amp circuit breaker.


Power is supplied to the outlet by connecting an externalpower source to the power-input connector at the rear ofthe chassis (refer to Figure 9.7).


To use the outlet, plug a source of power into the power-input connector. Unplug the source of power beforemov-ing the aerial platform.

Wallboard Loading GateThewallboard gatemay be used for loading wallboard orother material. It is hinged on the right side of the plat-form and is pinned on the left.

For easy loading of work materials in the platform, re-move the pin and swing the gate upward and out of theway. Lower and pin the gate after loading the platform.

Power-Input Connector

LatchTray

S1930 0361527 35


ACautionLifting the aerial platform with the forklift forks po-sitioned improperly can produce enough force todamage machine components When lifting themachine from the side, place the forklift forks di-rectly under the designated lift points.

4. If lifting from either side of the machine, place theforklift forks directly under the designated points un-der the pothole protector skid (refer to Figure 10.2).

Figure 10.2 Side of Chassis

5. Do not raise the aerial platform higher than neces-sary to transport it. Drive the forklift slowly and care-fully when transporting the aerial platform.

WinchingUse a winch to load and unload the aerial platform onramps that exceed 20 percent grade.A20 percent gradeis a 24″ (0.61 m) vertical rise in 10′ (3.05 m) horizontallength. A winch may also be used when poor traction,uneven surfaces, or stepped ramp transition make driv-ing hazardous.

Use the following procedure to winch the aerial platformonto the transport vehicle.

Chapter 10 Stowing and Transporting

To prevent unauthorized use and damage, properly stowthe aerial platform at the end of each work day. It mustalso be properly stowed while transporting.

StowingUse the following procedure to properly stow the aerialplatform.

1. Retract the platform extension deck and ensure thepin and its locking mechanism is in place.

ACautionThe extension deck is free to move when the pin isremoved. Make certain the pin is in place when thedeck is extended in the working position and whenit is stowed.

2. Fully lower the platform.

3. Push the emergency stop button in on the lower con-trol panel.

4. Turn the battery disconnect switch off and lock it.

5. Securely close the swing-out trays.

TransportingThe aerial platformmay bemoved on a transport vehicle.Depending on the particular situation, the aerial platformmay be lifted with a forklift, winched, driven, or hoistedonto a vehicle such as a truck or trailer. Lifting with aforklift is the preferredmethod.

The equipment used to load, unload, and transport theaerial platformmust have adequate capacity. The grossvehicle weight is listed in Chapter 2 and is stamped onthe serial number placard.

Theuser assumesall responsibility for choosing thepropermethod of transportation, and the proper selection anduse of transportation and tie-down devices, making surethe equipment used is capable of supporting the weightof the aerial platform and that all manufacturers instruc-tions and warnings, regulations and safety rules of theiremployer, the DOT and/or any other state or federal laware followed.

Lifting With a ForkliftUse the following procedure to lift the aerial platformwitha forklift.

1. Properly stow the aerial platform.

2. Remove all personnel, tools,materials, or other looseobjects from the platform.

3. If lifting from the rear of themachine, insert the forkliftforks into the pockets (refer to Figure 10.1).

Forklift Pockets

Forklift Lift Points


36 S1930 0361527

1. Position the transport vehicle so the aerial platformwill not roll forward after it is loaded.

2. Remove any unnecessary tools, materials, or otherloose objects from the platform.

3. Drive themachine to the foot of the loading rampwiththe front wheels nearest the ramp. Make sure themachine is centeredwith the rampsand that the steer-ing wheels are straight.

4. Properly stow the aerial platform.

AWarningThe aerial platform is free to move when the brakesare released. Death or serious injury can result. Re-enable the brakes before operating the aerial plat-form.

5. Chock the wheels to prevent uncontrolled motion ofthe aerial platform.

6. Use a 7/8″ wrench to rotate each brake release cam90° (refer to Figure 10.3). Rotate the camon the rightbrake cylinder counterclockwise and the one on theleft brake cylinder clockwise. Thiswill retract the brakepins from the wheel lugs releasing the brakes. Re-move thewrench.


7. Unlatch and swing out the hydraulic tray on the rightside of the chassis. The free-wheeling valve is locatedon the hydraulic manifold (refer to Figure 10.4). Turnthe free-wheeling valve counterclockwise to the fullyopen position.

Figure 10.4 Hydraulic Tray

8. Attach the winch line to the tie-down lugs (refer toFigure 10.5) on the front of the chassis.

Figure 10.5 Front of Chassis

9. Remove the wheel chocks and use the winch to po-sition the aerial platform on the transport vehicle.

10. Close the free-wheeling valve.

11. Use a wrench to manually reset the parking brakes.

12. After unloading the aerial platform from the transportvehicle, verify that the drive system and brakes oper-ate properly before operating the aerial platform.

Driving

ADangerThe aerial platform can tip over if it becomes un-stable. Death or serious injury will result from a tip-over accident. Do not drive on ramps that exceed20 percent grade, or where conditions of the rampcould cause driving to be hazardous.

Use a winch to load and unload the aerial platform onramps that exceed a20percent grade.A20percent gradeis a 24″ (0.61 m) vertical rise in 10′ (3.05 m) horizontal

Tie-Down Lugs

Lifting Lugs

Free-Wheeling Valve

Brake Cam


S1930 0361527 37

length. A winch may also be used when poor traction,uneven surfaces, or stepped ramp transitionsmake driv-ing hazardous.

Drive the aerial platform onto the transport vehicle if awinch is not available and the ramp incline is within the20 percent grade capability of the aerial platform.

Use the following procedu

0361527 s1930 operators manual - broughton plant hire · 2018. 12. 13. · part number 0361527 may,...

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