sc carousel dryer - conair · sc carousel dryer instant access parts and service (800) 458-1960...

SC Carousel Dryer

Instant Access Parts and Service

(800) 458-1960(814) 437-6861

www.conairnet.com

The Conair Group, Inc.One Conair DrivePittsburgh, PA 15202Phone: (412) 312-6000Fax: (412)-312-6227

Standard Models 7.5, 15, 30 and 60

TRIP+ON I

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UGD016/0700

Installation

Maintenance

Operation

Troubleshooting

dmontini

Archive Stamp

It’s a good idea to record the model and serial number(s) ofyour equipment and the date you received it in the UserGuide. Our service department uses this information, alongwith the manual number, to provide help for the specificequipment you installed.

Please keep this User Guide and all manuals, engineeringprints and parts lists together for documentation of yourequipment.

Date:

Manual number: UGD016/0700

Serial number(s):

Model number(s):

DISCLAIMER: The Conair Group, Inc., shall not be liable for errorscontained in this User Guide or for incidental, consequential dam-ages in connection with the furnishing, performance or use of thisinformation. Conair makes no warranty of any kind with regard tothis information, including, but not limited to the implied warrantiesof merchantability and fitness for a particular purpose.

Copyright 2000 THE CONAIR GROUP, INC. All rights reserved

Please record yourequipment’s model

and serial number(s)and the date you

receive it in thespaces provided.

INTRODUCTION .........................................1-1Purpose of the user guide ......................................................1-2How the guide is organized ...................................................1-2Your responsibilities as a user .............................................. 1-2ATTENTION: Read this so no one gets hurt ........................1-3How to use the lockout device...............................................1-4

DESCRIPTION .......................................... 2-1What is the SC dryer?............................................................2-2Typical applications ...............................................................2-2How it works..........................................................................2-3Specifications: SC dryer ........................................................2-4

INSTALLATION......................................... 3–1Unpacking the boxes..............................................................3-2Preparing for installation .......................................................3-3Mounting dryer and hopper on a processing machine ..........3-4Mounting dryer on a floor stand; hopper on the throat .........3-6Connecting air and water hoses.............................................3-8Connecting the RTD probe ....................................................3-9Connecting the main power...................................................3-9Testing the installation.........................................................3-10

OPERATION............................................ 4–1The dryer control panel .........................................................4-2SC dryer functions .................................................................4-3To start drying........................................................................4-4To stop drying ........................................................................4-5Using the Auto Start Timer....................................................4-5Setting high and low setpoint limits ......................................4-6

MAINTENANCE........................................ 5–1Preventative maintenance checklist .......................................5-2Cleaning the hopper...............................................................5-3Cleaning the process filter .....................................................5-4Cleaning the regeneration filter .............................................5-4Cleaning the aftercooler coils ................................................5-5Inspect hoses and gaskets ......................................................5-5

TROUBLESHOOTING................................. 6–1Before beginning....................................................................6-2A few words of caution .........................................................6-2

TABLE OF

CONTENTS

UGD016/0700 SC Carousel Dehumidifying Dryer i

TROUBLESHOOTING (continued) .................. 6–1DIAGNOSTICSHow to identify the cause of a problem ................................6-3Shut down alarms ..................................................................6-4

Err 01.................................................................................6-4Err 02.................................................................................6-5Err 03.................................................................................6-6Err 04, 05 and 06...............................................................6-7Err 07 and 08.....................................................................6-8

Passive alarms........................................................................6-9Err 09.................................................................................6-9Err 10...............................................................................6-10Err 11, 12 and 13.............................................................6-11

Dryer will not power up ......................................................6-12

REPAIRReplacing fuses....................................................................6-13Checking heater contactors..................................................6-13Checking or replacing temperature sensors.........................6-14Checking motor overloads ...................................................6-15Adjusting the limit switch ...................................................6-16Replacing heater elements ...................................................6-17Replacing desiccant tanks....................................................6-18Refilling desiccant tanks......................................................6-18Adding an aftercooler ..........................................................6-19

APPENDIXService/Warranty information .................................Appendix AMaterial Safety Data Sheets ....................................Appendix B

If you purchased an SC dryer option, instructionscan be found in the appendix.

Option: SPI communication ....................................Appendix C

PARTS/DIAGRAMSThis section has been provided for you tostore spare parts lists and diagrams.

SC Carousel Dehumidifying Dryer UGD016/0700ii

TABLE OF

CONTENTS

�� Purpose of the User Guide .........1-2�� How the guide is organized ........1-2�� Your responsibilities as a user ...1-2�� ATTENTION: Read this so

no one gets hurt .....................1-3�� How to use the lockout device ..1-4

INTRODUCTION

UGD016/0700 SC Carousel Dehumidifying Dryer 1-1

1-2 INTRODUCTION SC Carousel Dehumidifying Dryer UGD016/0700

This User Guide describes the Conair SC series of carouseldehumidifying dryers and explains step-by-step how to install,operate, maintain and repair this equipment.

Before installing this product, please take a few moments toread the User Guide and review the diagrams and safety infor-mation in the instruction packet. You also should review man-uals covering associated equipment in your system. Thisreview won’t take long, and it could save you valuable instal-lation and operating time later.

Symbols have been used to help organize the User Guide andcall your attention to important information regarding safeinstallation and operation.

Symbols within triangles warn of conditions that couldbe hazardous to users or could damage equipment.Read and take precautions before proceeding.

Numbers within shaded squares indicate tasks or stepsto be performed by the user.

A diamond indicates the equipment’s response to anaction performed by the user.

An open box marks items in a checklist.

A shaded circle marks items in a list.

You must be familiar with all safety procedures concerninginstallation, operation and maintenance of this equipment.Responsible safety procedures include:

� Thorough review of this User Guide, paying particularattention to hazard warnings, appendices and related dia-grams.

� Thorough review of the equipment itself, with carefulattention to voltage sources, intended use and warninglabels.

� Thorough review of instruction manuals for associatedequipment.

� Step-by-step adherence to instructions outlined in thisUser Guide.

PURPOSE OFTHE USERGUIDE

HOW THEGUIDE ISORGANIZED

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YOURRESPONSIBILITYAS A USER

1-3UGD016/0700 SC Carousel Dehumidifying Dryer

We design equipment with the user’s safety in mind. You canavoid the potential hazards identified on this machine by fol-lowing the procedures outlined below and elsewhere in theUser Guide.

WARNING: High voltageThis equipment is powered by single- orthree-phase main voltage. Always discon-nect and lock out the main power sourcebefore servicing. To help you, we’veequipped the dryer with a lockable, elec-trical disconnect device. You are responsi-ble for developing a lockout procedure.

CAUTION: Hot SurfacesAlways protect yourself from hot surfacesinside the dryer and hopper. Also exer-cise caution around certain exterior sur-faces that can reach temperatures of180° to 200° F (82° to 93° C). Theseinclude the hopper door frame, the exteri-or of an uninsulated hopper, the return airhose and the dryer’s process filter hous-ing and moisture exhaust outlet.

WARNING: Do not placeaerosol, compressed gas orflammable materials on or nearthis equipment.The hot temperatures associated withthe drying process may cause aerosolsor other flammable materials placed on

the dryer or hopper to explode.

WARNING: Hazardous substanceThe electrical contactors in this dryercontain mercury, which is considered ahazardous substance and must be dealtwith accordingly. Material Safety DataSheet (#7439-97) has been included inyour instruction packet. This sheetexplains the potential hazards, how toavoid them and how to clean up and dis-pose of the mercury if it ever spills.

INTRODUCTION

ATTENTION:READ THIS SO NO

ONE GETS HURT

1-4 INTRODUCTION SC Carousel Dehumidifying Dryer UGD016/0700

Lockout is the preferred method of isolating machines orequipment from energy sources. Your Conair product isequipped with the lockout device pictured below. To use thelockout device:

Stop or turn off the equipment.

Isolate the equipment from electrical power. Turn the rotarydisconnect switch to the Off, or Oposition.

Secure the device with anassigned lock or tag. Pull out thecenter tab of the rotary handle.Insert a lock or tag in the holes toprevent movement.

The equipment is now locked out.

To rotate the disconnect back to the On position:

Remove the lock or tag and push in the center tab of therotary handle.

Slide the spring tab down.

Turn the rotary disconnect switchto the ON or I position.

HOW TO USETHE LOCKOUTDEVICE

CAUTION: Before performing maintenance orrepairs on this product, you should disconnect and lockout electrical power sources to prevent injury from unex-pected energization or start-up. A lockable device hasbeen provided to isolate this product from potentiallyhazardous electricity.

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TRIP+ON

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WARNING: Before removing lockout devicesand returning switches to the ON position, make surethat all personnel are clear of the machine, tools havebeen removed and all safety guards reinstalled.

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Spring tab

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�� What is the SC Carousel Dryer? .. 2-2�� Typical applications ...................... 2-2�� How it works .................................. 2-3�� Specifications: SC Dryer............... 2-4

DESCRIPTION


The SC Carousel Dehumidifying Dryer produces hot, low-dewpoint air that removes moisture from hygroscopic plastics. Thedryer pulls warm, moist air from a drying hopper and pumps itthrough dehumidifying desiccant. The dryer then heats the airto the drying temperature you selected and circulates it throughthe material in the hopper.

The dryer’s three-tank, closed-loop design ensures a continuoussupply of hot, dehumidified air while preventing contaminationfrom moisture in the plant.

The SC dryer can be used successfully in applications that require:

� A contamination-free drying environment.� Drying temperatures of 150° to 375° F (66° to 191° C).� Throughput rates of 15 to 112 lbs (6.8 to 50.8 kg) per hour.� Dew points of -40° F (-40°C).

If you are drying material at temperatures over 250° F (121°C),you will need the high-temperature package that includes anaftercooler.

2-2 SC Carousel Dehumidifying Dryer UGD016/0700

WHAT IS THESC CAROUSELDRYER?

O

O

TYPICALAPPLICATIONS

O

The SC dryer can bemounted beside the hopperon the throat of a process-ing machine, or on a floorstand. Two mobile floorstand designs are available.

DESCRIPTION

The SC Carousel Dryer achieves continuous, closed loop dry-ing by passing air simultaneously through two heaters andthree tanks of molecular sieve desiccant.

DESCRIPTION 2-3UGD016/0700 SC Carousel Dehumidifying Dryer

HOW IT WORKS

The Process (Drying) CycleThe process blower pulls moist air from the topof the drying hopper. The air passes through theprocess filter and aftercooler into the dryer’sdesiccant tank, where moisture is removed. Thenow-dry air moves through the process heater,where it is heated to the drying temperatureselected by the operator. The hot, dry air is deliv-ered to the hopper, where a spreader cone evenlydistributes the air through the material.

The Regeneration CycleThe regeneration blower pulls airthrough the regeneration filter into thedryer’s regeneration heater. The air isheated to 380° F (193° C) before it ispushed into the “wet” desiccant tank.The hot air purges moisture from thedesiccant. The moist air is blown outthe exhaust at the back of the dryer.

The Cooling CycleA regenerated desiccant tank mustbe cooled to the drying temperaturerange before it is moved back intothe process cycle. The processblower pushes a small amount of airthrough the regenerated desiccanttank. The cooling air then passesthrough the aftercooler and repeatsthe circuit.

The CarouselThe carousel indexesevery 15 minutes,moving a desiccanttank through threecycles in 45 minutes.

2-4

SPECIFICATIONS: SC CAROUSEL DRYER

SC Carousel Dehumidifying Dryer UGD016/0700DESCRIPTION

C

BAED

MODEL SC7.5 SC15 SC30 SC60Performance characteristics

Air flow ft3/min {m3/min} 7.5 {0.21} 15 {0.4} 30 {0.85} 60 {1.7}Drying temperature ALL MODELS 160 -375° F {71-191° C}Dew point ALL MODELS -40° F {-40° C}

Dimensions inches {cm}A - Height 30.5 {77.5} 30.5 {77.5} 36.12 {91.7} 43 {109.2}B - Overall width 21.5 {54.6} 21.5 {54.6} 26.5 {67.3} 30.5 {77.5}C - Control width 12.25 {31.1} 12.25 {31.1} 14.25 {36.2} 14.25 {36.2}D - Depth 27.5 {69.9} 27.5 {69.9} 28.5 {72.4} 31 {78.7}E - Control depth 9 {22.9} 9 {22.9} 9 {22.9} 9 {22.9}

Weight lbs {kg}Installed 150 {68.2} 165 {75} 215 {97.7} 280 {127.3}

Voltage Total Amps208 V/3 phase/60 Hz 9.9 13.3 17.7 29.6 240 V/3 phase/60 Hz 8.9 11.8 15.7 26.2380 V/3 phase/50 Hz 6.24 9.4 10.0 15.8 415 V/3 phase/50 Hz 6.7 10.1 9.9 14.5 480 V/3 phase/60 Hz 5.3 9.0 8.0 13.2 575 V/3 phase/60 Hz 4.6 6.2 7.3 10.8

Total Kilowatts kw {BTU/min} 2.8 {159} 3.7 {208} 5.05 {287} 9.1 {517}Water requirements {for optional aftercooler}Recommended temperature* 70°-90° F {21°-32° C}Water flow gal./min. {liters/min.} 3 {11.36}

B

A

DC

D

A

C

B

7/16 inches {1.1 cm}diameter

4 inches{10.2 cm}square

1 inch {2.5 cm}diameter

3 inches {7.6 cm} square

6 inches{15.2 cm}square7/16 inches {1.1 cm}

diameter

5 inches {12.7 cm} square

2 inches {5.1 cm}diameter

Standard Base Plate IB02

Optional Base Plate IB01 (for mounting CH10 and CH14 hoppers independent of dryeronly)

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�

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CH10

CH14/18/24

A

DEC

B

A

B

DC

A

B

DC

STANDARD MODEL

OPTIONAL HOPPERS AND MOUNTING BRACKET

MOUNTING PATTERNS

SPECIFICATION NOTES:* Water temperatures outside this range may affect

dryer performance. Aftercooler water may be suppliedby a tower, chiller or municipal source.

Specifications may change without notice. Consult aConair representative for the most current information.

�

�

HOPPER MODEL CH10-0.5 CH10-1 CH10-1.5 CH14-2 CH14-3 CH14-4

Hopper / Mounting Frame Dimensions inches {cm}

A - Insulated hopper diameter 12.5 {13.8} 12.5 {31.8} 12.5 {31.8} 17 {43.2} 17 {43.2} 17 {43.2}

B - Overall height 32 {81.3} 43 {109.2} 54 {137.2} 45 {114.3} 56 {142.2} 67 {170.2}

C - Base plate, square 7.5 {19} 7.5 {19} 7.5 {19} 6.5 {16.5} 6.5 {16.5} 6.5 {16.5}

D - Width with insulated hopper 31 {78.7} 31 {78.7} 31 {78.7} 36.75 {93.4} 36.75 {93.4} 36.75 {93.4}

Volume ft3 {liters} 0.5 {9.4} 1 {28.3} 1.5 {42.5} 2 {56.6} 3 {85} 4 {113.2}

Mounting Frame Weight lb {kg} 30 {13.6} 30 {13.6} 30 {13.6} 35 {15.9} 35 {15.9} 35 {15.9}

Hopper Weight lb {kg}

Insulated 40 {18.1} 50 {22.7} 70 {31.7} 80 {36.32} 95 {43.1} 110 {48.9}

HOPPER MODEL CH18-4 CH18-6 CH24-8 CH24-12 CH24-15

Hopper / Mounting Frame Dimensions inches {cm}

A - Insulated hopper diameter 21 {53.3} 21 {53.3} 27 {68.58} 27 {68.58} 27 {68.58}

B - Overall height 48 {121.9} 68 {172.7} 64 {162.6} 79 {200.7} 90 {228.6}

C - Base plate, square 6.5 {16.5} 6.5 {16.5} 6.5 {16.5} 6.5 {16.5} 6.5 {16.5}

D - Width 43.75 {111.1} 43.75 {111.1} 55.75 {141.6} 55.75 {141.6} 55.75 {141.6}

Volume ft3 {liters} 4 {113.3} 6 {169.9} 8 {226.5} 12 {339.8} 15 {424.8}

Mounting Frame Weight lb {kg} 50 {22.7} 50 {22.7} 70 {31.7} 70 {31.7} 70 {31.7}

Hopper Weight lb {kg}

Insulated 145 {66} 165 {75} 210 {95} 235 {107} 255 {116}

�� Unpacking the boxes ................... 3-2�� Preparing for installation ............ 3-3�� Mounting dryer and hopper

on a processing machine ....... 3-4�� Mounting dryer on a floor stand;

hopper on the throat ............... 3-6�� Connecting air and water hoses.. 3-8�� Connecting the RTD probe ......... 3-9�� Connecting the main power ....... 3-9�� Testing the installation ............... 3-10

INSTALLATION


The SC carousel dryer comes in one to four boxes, dependingon the models and options ordered. The boxes should include:

Carefully remove the dryer and componentsfrom their shipping containers, and set upright.

Remove all packing material, protective paper, tapeand plastic.

Carefully inspect all components to make sure nodamage occurred during shipping, and that you have allthe necessary hardware.

Take a moment to record serial numbers andelectrical power specifications in the blanks provided onthe back of the the User Guide’s title page. The informa-tion will be helpful if you ever need service or parts.

You are now ready to begin installation.Follow the preparation steps on the next page, thenchoose one of the three mounting options:

� Dryer and hopper on a mobile floor stand. (Go topage 3-8 after completing first preparation step.)

� Dryer and hopper on the processing machine throat.� Dryer on a floor stand; hopper on the throat.

INSTALLATION3-2 SC Carousel Dehumidifying Dryer UGD016/0700

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Dryinghopper

Dischargeassembly

(small or large)

Dryer/hopperSupport frame

(optional)

Two lengths offlexible hose(one insulated)

Floor stand(optional)

Hopperslide gate

SC Dryer

Mounting Hardware:Floor stand option:

❒ four 3/8-16 self-locking bolts❒ four 3/8-16 bolts with lock

washers❒ three 1/4-20 self-locking bolts❒ four hose clamps

Support frame option:❒ eight 3/8-16 self-locking bolts❒ three 1/4-20 self-locking bolts❒ four hose clamps

NOTE: You must mount thedryer on a floor stand, Ifyour processing machinethroat opening is 1 inch(2.54 cm) diameter orsmaller and requires a3x3 inch (7.6x7.6 cm) orsmaller bolt pattern.

5

RTD probe

UNPACKING

THE BOXES

The SC Dryer is easy to install, if you plan the location andprepare the mounting area properly.

Make sure the mounting area provides:❒❒ A grounded power source supplying the correctcurrent for your dryer model. Check the dryer’s serialtag for the correct amps, voltage, phase and cycles. Fieldwiring should be completed by qualified personnel to theplanned location for the dryer. All electrical wiringshould comply with your region’s electrical codes.

❒❒ A source of water, if you have an aftercooler.The SC dryer’s optional aftercooler can use tower, city orchiller water at temperatures of 70° to 90° F (21° to 32°C). Pipe should be run to the planned dryer location. Useflexible hose to connect the water pipes to the aftercooler.

❒❒ Minimum clearance for safeoperation and maintenance.We recommend at least 25 inches(63.5 cm) clearance above the dryer forremoving the carousel housing. Youshould maintain 24 inches (61 cm)clearance on at least three sides of thedryer. If the dryer is mounted with ahopper on a processing machine throat,clearance between the dryer and hop-per can be 4 inches (10.2 cm).

❒❒ A mounting surface that will support the weight ofthe dryer, support frame and a fully-loaded hopper, or justthe fully-loaded hopper. See the specifications tables forweights and volumes.

❒❒ Material and conveying lines installed. If you planto use vacuum or compressed air loaders to fill the hop-per, install conveying lines to the drying hopper location.

Drill and tap mounting holes or make adapter.Available discharge assemblies and slide gates fit mount-ing surfaces with these bolt patterns and diameters:

INSTALLATION 3-3UGD016/0700 SC Carousel Dehumidifying Dryer

1

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PREPARING FORINSTALLATION

6 inches(15.24 cm)square

5 inches(12.7 cm)

square

7/16 inches(1.11 cm)diameter

2 inches(5.08 cm)diameter

4 inches(10.16 cm)square

3 inches(7.62 cm)

square

7/16 inches(1.11 cm)diameter

1 inch(2.54 cm)diameter

��

Top

Control

24 inches(61 cm)

24 inches(61 cm)

24 inches(61 cm)

4 inches(10.2 cm)

If your mounting sur-face does not matchthe standard bolt pat-terns available, youwill need an adapter.You can make anadapter using thedimensions providedor purchase one fromConair.

The dryer and hopper mounts on a special bracket that bolts tothe throat of the processing machine, as pictured above.

3-4 INSTALLATION SC Carousel Dehumidifying Dryer UGD016/0700

CAUTION: To prevent accident and injury,lift the empty hopper onto the throat of theprocessing machine using a hoist and thelifting lugs provided. After the hopper ismounted, then lift the dryer onto the supportframe using a hoist and strap.

WARNING: You are responsible for thestructural integrity of this installation.

We recommend that you:�� Use bolts no smaller than 3/8 inch (M 10)when mounting the hopper/dryer combinationto the throat of a processing machine.�� Do not mount the hopper/dryer combinationon a plate that swings away or slides awayfrom the processing machine throat. Eitherremove the swing or slide plate, or mount thedryer on a floor stand.

Dryinghopper

Mountingadapter(optional)

Support frame /Discharge assembly

Hopperslide gate

SC Dryer

Tools for installation:❒ 5/32” Allen wrench❒ Phillips screwdriver❒ Flathead screwdriver❒ 9/16” and 3/8” wrench❒ Hoist and strap

NOTE: You must mount thedryer on a floor stand, Ifyour processing machinethroat requires the small dis-charge assembly or amounting plate with lessthan a 3x3 inch (7.6x7.6cm) bolt pattern and 1-inch(2.54 cm) diameter opening.

MOUNTINGDRYER ANDHOPPER ON APROCESSINGMACHINE

The drying hopper, slide gate, support frame and dischargeassembly may have been shipped fully assembled. You canremove the drying hopper from the support frame, if you findit easier to lift and bolt the frame and then the hopper to thethroat of the processing machine.

Lift the hopper, support frame and dischargeassembly onto the processing machine throat.Use a hoist to lift the support frame and hopper. Positionthe frame and discharge assembly so that its bolt holesline up with the holes drilled in the throat. If hole patternsdo not match, you can place a mounting adapter betweenthe throat and the support frame.

Bolt the frame and dischargeassembly to the throat.Using four 3/8”-16 (M 10) self-lock-ing bolts, fasten the support frame anddischarge assembly to the throat. Thebolts must be long enough to reach atleast 1/2 inch (1.25 cm) into the pro-cessing machine throat or mountingadapter after passing through the dis-charge assembly and support frame.

Lift the dryer onto thesupport frame.Lift using a hoist and strap.Align the three bolt holes onthe bottom of the dryer withthe three bolt holes on the topof the support frame. Makesure the acorn nuts on the bot-tom of the dryer fit in theholes on the support form.Fasten the dryer to the framewith 1/4”-20 bolts.


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MOUNTINGDRYER ANDHOPPER ON APROCESSINGMACHINE

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NOTE: If you removed the hopperfrom the support frame, lift the hopperonto the frame using a hoist. Makesure the slide gate is positioned in therecess on the bottom of the hopperbase plate. Align the bolt holes andfasten the base plate to the dischargeassembly using the four 3/8”-16 self-locking bolts provided.

The hopper bolts to the throat of the processing machine, aspictured above. The dryer bolts to a mobile floor stand.

3-6 INSTALLATION SC Carousel Dehumidifying Dryer UGD016/0700

MOUNTING THEDRYER ON AFLOOR STAND;HOPPER ON THETHROAT

Dryinghopper

Mountingadapter(optional)

Dischargeassembly

Floor stand

Hopperslide gate

SC Dryer

WARNING: You are responsible for thestructural integrity of this installation.

We recommend that you:�� Use bolts no smaller than 3/8 inch (M 10)to mount the hopper on the throat of a pro-cessing machine.

Tools for installation:❒ 5/32” Allen wrench❒ 3/8” and 9/16” wrench❒ Phillips screwdriver❒ Flathead screwdriver❒ Hoist and strap

Lift the hopper onto the throat.Lift the hopper with a hoist, using the lifting lugs provid-ed. Make sure you align the bolt holes in the throat withthe bolt holes on the discharge assembly.

Bolt the hopper to thethroat of the machine.Using four 3/8”-16 (M 10) self-locking bolts, fasten the support frame,discharge and slide gate to the throat.The bolts must be long enough to reachat least 1/2 inch (1.25 cm) into themounting adapter or processing machinethroat, after passing through the dis-charge and slide gate.

Lift the dryer onto the floor stand, and bolt.Lift using a hoist and strap.

Align the three bolt holes on thebottom of the dryer with the three boltsholes on the top of the floor stand.

Bolt the dryer to the standusing the three 1/4”-20 bolts provided.


MOUNTINGTHE HOPPER

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1

MOUNTINGTHE DRYER

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2

CAUTION: To prevent accident and injury,lift the empty hopper onto the throat of theprocessing machine using a hoist and thelifting lugs provided. Lift the dryer onto thefloor stand using a hoist and strap.

Using the two flexible hoses provided, connect the inlets andoutlets of the drying hopper to the dryer. If you have mountedthe dryer on a floor stand, make sure the dryer is located nomore than 5 feet (1.5 m) from the hopper to reduce heat loss.

Secure hoses with clamps.The hose clamp should besecured at least 1/4 inch (.64 cm)from the end of the inlet or outlettube.

The optional aftercooler requires a source of cooling waterand a discharge or return line. The water source should pro-vide 3 gallons (11.36 liters) per minute at temperatures up to90° F (32° C).

Connect the cooler inlet to thewater source.

Connect the cooler outlet to adischarge or return line.

INSTALLATION3-8 SC Carousel Dehumidifying Dryer UGD016/0700

CONNECTINGAIR HOSES

CONNECTINGWATER HOSES

1 Attach the larger diameterhose to the return air inlet in thebase of the aftercooler housing andto the return air outlet at the top ofthe hopper.

2 Attach the insulatedhose to the delivery airoutlet in the base of thedryer and to the hopper’sdelivery air inlet.

3NOTE: Do not allowthe flexible hoses tokink or crimp.

TIP: Make the connections withflexible hose at least 14 inches(35.5 cm) long. This allows you toeasily remove the cooler coils forcleaning.

1

21/2 inch NPT femalecouplings. If a manualshut off valve is used, itshould be mounted onthe inlet line.

The RTD probe monitors the temperature of the drying air asit enters the hopper. If the probe is not installed correctly, tem-perature readings will be inaccurate.

Insert the probe inthe delivery air inlet atthe top of the hopper. Theend of the probe must nottouch the walls of the inlet.Tighten the nuts to lock theprobe in place.

Plug the probe’s cable intothe receptacle on the side ofthe electrical enclosure. Handtighten the connector. Coil excesscable and secure with a wire tie.

Open the dryer’s electrical enclosure.Turn the disconnect dial on the dryer door tothe Off position. Lock out the main power. Turnthe captive screw, and swing the door open.

Insert the main power wirethrough the knockout in the side of theenclosure. Secure the wire with a rub-ber compression fitting or strain relief.

Connect the powerwires to the three termi-nals at the top of thepower disconnect holder.

Connect the groundwire to either groundingpoint shown in the dia-gram.


CAUTION: Always disconnectand lock out the main power sourcesbefore making electrical connections.Electrical connections should bemade only by qualified personnel.

CONNECTING THERTD PROBE

CONNECTING THEMAIN POWER

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1L1

3L2

5L3

10E

T12

T24

T36

N.O.14

R

AB C

D

A

M

9 82-T1

4-T2

6-T3

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3

4

IMPORTANT: Alwaysrefer to the wiring diagramsthat came with your dryerbefore making electricalconnections. The diagramsshow the minimum sizemain power cable requiredfor your dryer, and themost accurate electricalcomponent information.

TRIP+ON

Reset

OOFF

SC Carousel Dehumidifying Dryer UGD016/0700

If you have a Conair loader or vacuumreceiver, you can use the flange andmounting clips provided on the top ofthe hopper. Refer to the manuals thatcame with your receiver or loader fordetailed installation instructions.

You have completed the installation. Now it’s time to makesure everything works.

Make sure there is no material in the hopper.If you have mounted a loader or vacuum receiver on thehopper, disconnect the material inlet hose at the source.

Turn on main power to the dryer.Turn the dryer’s disconnect to the ON position.

Turn the power switch into the ON position.If everything is installed correctly:

� The power switch and power light illuminate.� The Actual and Setpoint windows briefly display

ConAir, then change to the actual temperature and asetpoint temperature of 150° F (65° C).

� The Function Select display changes from _ to 1.

Set the drying temperature.Press Adjust Setpoint � or � arrow until the setpointtemperature you want appears in the setpoint display.

Press the RUN button.If everything is installed correctly:

� The amber drying light turns on.� Process and regeneration blowers and heaters turn on.� If the desiccant tanks are not in the correct position, the

carousel will turn and stop in the correct position.

3-10 INSTALLATION

MOUNTING ALOADER ONTHE HOPPER

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TESTING THEINSTALLATION

TRIP+ON I

Reset

OOFF

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UGD016/0700 SC Carousel Dehumidifying Dryer

Check for proper air flow. Remove the delivery air hose on the dryer. Hold yourhand near the outlet with the dryer on. You should feel airblowing out of the dryer.

Press the STOP button.If everything is installed correctly:

� The amber drying light turns off, but the blowers willcontinue running as needed to cool the heaters.

The test is over. If the dryer performed the normal operating sequencesas outlined, you can begin operation. If it did not, refer tothe TROUBLESHOOTING section of the User Guide.

INSTALLATION 3-11

7

Moistureexhaust

Deliveryair outlet

6

8

CAUTION:Hot surface

Do not place your handon the delivery air out-let. The outlet and theair can get hot enoughto burn your hand.

TESTING THEINSTALLATION

INSTALLATION NOTE: Models SC30 and SC60These models use a three-phase process blower. If thedryer shuts down with an Err 02 alarm condition within thefirst few minutes of operation, check for proper air flow.

If air flow is reversed, the processblower is turning in the wrong direc-tion. Turn off and lock out the mainpower source. Open the controlenclosure and reverse any two leads connecting the main powersupply to the dryer.

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�� The dryer control panel .............. 4-2�� SC dryer functions ...................... 4-3�� To start drying ............................. 4-4�� To stop drying ............................. 4-5�� Using the Auto Start Timer ........ 4-5�� Setting high and low

setpoint limits ............................ 4-6

OPERATION


4-2 OPERATION SC Carousel Dehumidifying Dryer UGD016/0700

THE DRYERCONTROL PANEL

Run/Stop ButtonsPress RUN to start drying.Press STOP to stop drying.

Power On/Off Turn switch to turn on powerto the control. Turn the switchthe other direction to turnpower off. The switch willlight when power is on.

Function SelectPress � or � buttons until thenumber of the function you wantto program or view is displayedin the function window.

NOTE: Load Time is enabledonly on MDC models.

Adjust SetpointPress � or � to set the drying tem-perature, the automatic start time inhours, high and low temperaturelimits, or SPI parameters. Press �to increase a value. Press � todecrease a value.TIP: Press and hold the button forfaster scrolling speed.

Status LightsPower = On when the control

has power.Drying = On when the dryer

is running.Alarm = On when the dryer

detects a problem.

Push To ReadButtonPress to silence the option-al audible alarm and dis-play alarm codes.For a complete explanationof alarm codes, see theTroubleshooting section.

Display WindowsThe upper window displays the actualtemperature of drying air entering thehopper. The lower window displayssetpoint values. When there is analarm, the windows display error codes.

C° / F° LightThe light indicates whether temperaturesare displayed in degrees Fahrenheit ordegrees Celsius.

OPERATION 4-3UGD016/0700 SC Carousel Dehumidifying Dryer

SC DRYERFUNCTIONS

Dryer functions are values that you can set or monitor in theActual and Setpoint display windows. Press the Function Select� or � buttons until the number of the function you want to setor monitor appears in the Function window.

Adjustable functions:No. Function Description

1 Drying Setpoint Used to set the drying temperature that wasrecommended by the resin manufacturer.

2 Load Time (MDC) This function is disabled unless your dryerhas been factory configured as a MobileDrying and Conveying Unit.

3 Auto Start Timer Used to automatically start the dryer. Thestart time can be set at 1 to 150 hours fromthe time you entered the setpoint tempera-ture and pushed the RUN button.

4 Setpoint High Limit Used to prevent someone from setting thedrying temperature above an acceptablelevel for your material. The high limit mustbe set at a temperature greater than or equalto the Drying Setpoint. The maximum set-ting is 400° F (204° C).

5 Setpoint Low Limit Used to prevent someone from setting thedrying temperature below an acceptablelevel for your material. The low limit mustbe set at a temperature less than or equal tothe Drying Setpoint. The minimum settingis 100° F (38° C).

6 Baud Rate Used to set the baud rate for SPI communi-cation devices connected to the dryer. Baudrate = 1200, 2400, 4800 or 9600.

7 Node address Used to assign the dryer a network addressfor SPI communication. The address can beany number from 032 to 064.

Monitoring functions:No. Function Description

8 Return Air Temperature Used to view the temperature of air return-ing from the drying hopper to the dryer.Lower return air temperatures indicatelower dew point and better dryer efficiency.

9 Regeneration Temperature Used to view the temperature of air used topurge moisture from the desiccant. Theregeneration setpoint of 380° F (193° C)cannot be changed. It is the optimum tem-perature for regenerating moisture-ladendesiccant.

Make sure there is material in the hopper.

Turn on the main power to the dryer.Make sure the dryer’s disconnect dial is in theon position.

Turn the power switch into the ONposition.If everything is installed correctly:

� The Actual and Setpoint windows briefly displayConAir, then change to the actual temperature and asetpoint temperature of 150° F (65° C).

� The Function Select display changes from _ to 1.

Set the drying temperature.Press Setpoint Adjust � or � arrow until the setpointtemperature you want appears in the setpoint display.

Press .If everything is installed correctly:

� The amber drying light turns on.� The process and regeneration blowers turn on.� The process and regeneration heaters turn on.� If the desiccant tanks aren’t in their correct position,

the carousel will turn clockwise and stop in the correctposition.


TO STARTDRYING

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TRIP+ON I

Reset

OOFF

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3 4

5

RUN

OPERATION 4-5UGD016/0601 SC Carousel Dehumidifying Dryer

TO STOP DRYINGPress . � The drying light turns off. The blowers continue run-

ning for a few minutes to cool the heaters.

Turn the ON/OFF switch to OFF after theblowers stop running.Be sure to disconnect and lockout the mainpower if you have stopped the dryer to performmaintenance or repair.

IMPORTANT: Do not use the power ON/OFFswitch to stop the dryer. Turning off power to thecontrol or dryer during normal operation preventsthe necessary cool-down period, and can triggerthe shut down/high temperature alarm duringyour next drying cycle.

STOP1

2

USING THEAUTO STARTTIMER

You can set the dryer to start automatically. The start time canbe set at 1 to 150 hours from the time you entered the setpointtemperature and pushed the RUN button.

Make sure there is material in the hopper andpower to the dryer is on.

Set the drying temperature.Press Setpoint Adjust � or � arrow untilthe setpoint temperature you want appearsin the setpoint display.

Select Function 3.Press Function Select � or � arrow until3 appears in the Function display.

Enter the start time.Press Setpoint Adjust � or � arrow untilyou see the number of hours from nowthat you want the dryer to start.

Press .� The Actual window displays ON.� The amber drying light blinks to indicate

that Auto Start has been enabled.� The dryer will begin operating when the

control has finished counting down thenumber of hours you entered.

To Stop or Reprogram the Auto Start Timer:Press and select Function 3. Set the time to 0 to stop, orset a new start time to reprogram. Press to resume.

RUN5

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4

NOTE: You cannotremove or permanentlydeactivate the Auto Startfeature to prohibit its use.STOP

RUN

You can protect your drying process by preventing someonefrom entering setpoint temperatures above or below an accept-able level for the material. You can also set the high and lowlimits equal to the setpoint temperature to prevent accidentalor unauthorized changes to the setting during operation.

Turn on the main power to the dryer.

Turn the power switch to the ON position.

Select Function 4.Press Function Select � or � arrowuntil 4 appears in the Function display.

Enter the high temperaturelimit for setpoint.Press Setpoint Adjust � or � arrowuntil the temperature limit you wantappears in the setpoint display. Thehigh limit must be set at a temperaturegreater than or equal to the drying set-point. The maximum setting is 400° F(204° C).

Select Function 5.Press Function Select � or � arrowuntil 5 appears in the Function display.

Enter the low temperature limitfor setpoint.Press Setpoint Adjust � or � arrowuntil the temperature limit you wantappears in the setpoint display. The lowlimit must be set at a temperature lessthan or equal to the drying setpoint. The minimum setting is 100° F (38° C).

These high and low temperature limits will remain active untilyou change the settings.

NOTE: The factory default settings are 400° F(204° C) for the high limit and 100° F (38° C) forthe low limit.

SETTING LOWAND HIGHSETPOINT LIMITS

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�� Maintenance checklist .................. 5-2�� Cleaning the hopper ..................... 5-3�� Cleaning the process filter ........... 5-4�� Cleaning the regeneration filter ...5-4�� Cleaning the aftercooler coils ..... 5-5�� Inspect hoses and gaskets ..........5-5

MAINTENANCE


Routine maintenance will ensure optimum operation and per-formance of the SC Carousel Dryer. We recommend the fol-lowing maintenance schedule and tasks.

�� Whenever you change materials❒❒ Drain and clean the hopper.

�� Weekly, or as often as needed❒❒ Clean the process and regeneration filters.

You may need to clean filters more often thanweekly. Frequency depends on how much materialyou process and how dusty or full of fines it is.

❒❒ Clean the return air screen in the hopper.Cleaning frequency depends on how much materialyou process and how dusty or full of fines it is.

❒❒ Inspect hoses and hose connections.Check for damage, kinks or loose hose clamps.Replace any hoses that show signs of damage orwear. Reposition and tighten loose hose clamps.

�� Monthly❒❒ Clean the aftercooler coils.

You may need to clean the coils more often thanmonthly. Frequency will depend on the type andvolume of material you process.

�� Every six months❒❒ Inspect gaskets for damage or wear.

Damaged gaskets can allow moisture to seep intothe closed-loop drying system. Replace any gasketthat is torn or cracked.

5-2 MAINTENANCE SC Carousel Dehumidifying Dryer UGD016/0700

PREVENTATIVEMAINTENANCECHECKLIST

The hopper, spreader cone and discharge assembly should becleaned thoroughly between material changes to prevent resincontamination.

Place a container beneath the hopper’s drainport to catch the material.

. Close the hopper slide gate.

Remove the drain-port plug.Pull the pin and allow the plug to drop.

After draining material, open the hopper door.You must lift the safety catch below thesight glass on the hopper door beforepulling the door handle open.

Remove the spreader cone. Reachinto the hopper. Grasp the spreader conetube, lift up slightly, twist and then pushdown to release it. Tilt the cone assemblyand pull it out through the hopper door.

Clean the spreader cone and theinside of the hopper. Make sure youalso clean the return air screen at thereturn air outlet of the hopper.

Repeat the steps in reverse orderto reassemble the hopper before addingmaterial.

MAINTENANCE 5-3UGD016/0700 SC Carousel Dehumidifying Dryer

CLEANINGTHE HOPPER

CAUTION: Hot surfaces.Always protect yourself from hot sur-faces inside and outside the dryer anddrying hopper.

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Safety catch

1

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Clogged filters reduce air flow and dryer efficiency. Cleaningfrequency depends on how much material you process andhow dusty it is.

Loosen the knobbelow the process fil-ter box and removethe box.

Clean the filter box.Remove the filterby turning the metalend cap. Clean thefilter. If the filter isworn, damaged orclogged, replace it.

Reassemble byrepeating the steps inreverse order.

Remove the regeneration filter.

Clean the filter. Replace thefilter if it is worn, damaged orhopelessly clogged with dirt,fines or dust.

Reassemble byrepeating the stepsin reverse order.

5-4 MAINTENANCE SC Carousel Dehumidifying Dryer UGD016/0700

CLEANING THEREGENERATIONFILTER

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CLEANING THEPROCESSFILTER

If you have the optional aftercooler, you needto clean the cooling coils to keep them workingefficiently. Cleaning frequency depends on thetype and amount of material you process.

Release the latches atthe top of the aftercooler.

Pull the coils out ofthe aftercooler housing.

Clean the coils withhigh-pressure steam, thenreassemble.

Loose or damaged hoses and gaskets can allow moisture toseep into the closed-loop drying system.

Tighten any loose hose clamps.

Replace worn or damaged hoses and gaskets.

UGD016/0700 SC Carousel Dehumidifying Dryer MAINTENANCE 5-5

CLEANING THEAFTERCOOLERCOILS

2

1

3

INSPECT HOSESAND GASKETS

Hose clamps

Process filterbox gasket

Aftercoolergasket

Return airoutlet gasket

Hopper doorgaskets

21

Hose clamps

�� Before beginning .......................... 6-2�� A few words of caution ................6-2

DIAGNOSTICS�� How to identify the cause

of a problem ...............................6-3�� Shut down alarms ........................ 6-4

Err 01 through Err 08

�� Passive alarms ............................ 6-9Err 09 through Err 13

�� Dryer will not power up ...............6-12

REPAIR�� Replacing fuses ........................... 6-13�� Checking heater contactors ........6-13�� Checking or replacing

temperature sensors ................6-14�� Checking motor overloads ..........6-15�� Adjusting the limit switch ........... 6-16�� Replacing heater elements ......... 6-17�� Replacing desiccant tanks ..........6-18�� Refilling desiccant tanks ..........6-19�� Adding an aftercooler ................. 6-20

TROUBLESHOOTING


SC Carousel Dehumidifying Dryer UGD016/0700

You can avoid most problems by following the recommendedinstallation and maintenance procedures outlined in this UserGuide. If you do have a problem, this section will help youdetermine what caused it and how to fix it.

Before you start pulling side panels off the dryer:

❏ Diagnose causes from the front of the dryer. You can locate any problem from the front of the dryer.

❏ Find the wiring and equipment diagrams thatwere shipped with your dryer. These diagrams arethe best reference for correcting a problem. The diagramsalso will note any custom features, such as special wiringor alarm capabilities, not covered in this User Guide.

The SC Carousel Dryer is equipped with numerous safetydevices. Do not remove or disable them. Improper correctiveaction can lead to hazardous conditions and should never beattempted to sustain production

6-2 TROUBLESHOOTING

CAUTION: Hot surfaces.Always protect yourself from hot surfacesinside and outside of the dryer and hopper.

A FEW WORDSOF CAUTION

WARNING: High voltage.Always stop the SC Carousel dryer, disconnect and lock out the main powersource before troubleshooting or perform-ing repairs.

WARNING: Only qualified servicepersonnel should examine and correctproblems that require opening thedryer’s electrical enclosure or usingelectrical wires to diagnose the cause.

BEFOREBEGINNING

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Swing the electricalenclosure awayfrom the front of thedryer to check thepressure switch.

Check the errorcodes displayed onthe control panel.

Open the electricalenclosure to checkfuses and heatercontactors.

Most dryer malfunctions are indicated by an illuminated alarmlight and error codes displayed on the SC dryer control panel.

A problem can trigger two types of alarms:�� Shut Down: The dryer has automatically shut down

because it detected a serious problem that could damageyour material or facility.

�� Passive: The dryer continues to operate, but warns of aproblem that could prevent correct drying of your material.If ignored, this problem could lead to a condition that willshut down the dryer.

When an alarm light is displayed:

Press to display the alarm message and silence theoptional audible alarm.

Find the error code in the diagnostics table of thistroubleshooting section.

NOTE: When the dryer detects abnormally high tem-perature in the process heater, the dryer immediatelyshuts down and Err 7 flashes in the display windows.The alarm light does not illuminate.

UGD016/0700 SC Carousel Dehumidifying Dryer TROUBLESHOOTING 6-3

HOW TO IDENTIFYTHE CAUSE OF APROBLEM

2

1

When a shut down alarm lights, the dryer has detected a prob-lem or combination of problems that could damage your dryeror materials. When a shut down alarm occurs:

� The dryer automatically shuts off.� The alarm light turns on.� The power light remains on.� Pressing the Push To Read button displays an error code.

6-4 TROUBLESHOOTING SC Carousel Dehumidifying Dryer UGD016/0700

Alarm

The process bloweroverload has tripped.The blower is draw-ing excessive cur-rent.

WARNING:Only qualified electri-cal service personnelshould examine andcorrect problems thatrequire opening thedryer’s electrical enclosure or checkingelectrical current todiagnose the cause ofa problem.

SHUT DOWNALARMS

Possible cause

Is the correct voltage sup-plied to the dryer?

Is the blower overload setcorrectly?

Is the blower damaged?

Solution

Check the process blower cur-rent against the voltage andamp rating on the motor name-plate. If currents do not match,make sure the transformer iswired correctly.

Disconnect power and openthe electrical enclosure. Adjustthe blower overload setting, ifnecessary. Press the overloadreset button to resume opera-tion. See Checking MotorOverloads.

Replace the blower, if supplyvoltage, transformer wiringand overload settings are cor-rect, but the blower continuesto draw excessive current.

TROUBLESHOOTING 6-5UGD016/0700 SC Carousel Dehumidifying Dryer

Alarm

The RTD probe atthe drying hopperinlet sensed that theactual drying tem-perature is more than20° F (7° C) higheror lower than the set-point.

WARNING:Only qualified electri-cal service personnelshould examine andcorrect problems thatrequire opening thedryer’s electrical enclosure or checkingelectrical current todiagnose the cause ofa problem.

Possible cause

Are process air linesrestricted?

Is the dryer too far fromthe hopper to maintainsetpoint temperature ofthe drying air?

Is the RTD temperatureprobe installed correctly?

Is the process blowerrotating in the wrongdirection?

Did a process heaterelement fail?

Did a process heatercontactor fail?

Solution

Check the delivery air hoseand process filter. Removeblock age. Straighten crimps inhoses. Attach any loose hoses.

The dryer should be no morethan 5 feet (1.5 m) from thehopper. Move the dryer closerto the hopper, or insulate theair delivery hoses.

Verify that the tip of the RTDprobe is inserted into the cen-ter of the delivery air inlet ofthe hopper. Temperature read-ings will be incorrect, if thesensor touches the walls of theinlet pipe.

If the process blower is turningopposite the arrow stamped onits housing, reverse any twoleads connecting main powerto the dryer.

Using an ampmeter, check thecurrent in the heater elementwires. If the current is lowerthan indicated on the wiringdiagrams, replace the heaterelement. See REPLACINGHEATER ELEMENTS.

Disconnect power. Check thecontinuity of the contactor out-puts. If the ohm reading is zeroor near zero, replace the con-tactor. See CHECKING HEATERCONTACTORS.

SHUT DOWNALARMS




Alarm

Dew point will suf-fer because the airreturning from thehopper is too hot forthe desiccant towork at capacity.The return air sensorhas been set to alarmat temperatures over180° F (64°C).

Possible cause

Does the drying hoppercontain enough material?

Are you drying with highheat or low throughputs?

Is water flowing to youraftercooler?

Are the aftercooler coilsdirty?

Solution

Verify that your material sup-ply system is working. Referto the manuals for your con-veying system, if necessary.

You may need an aftercooler ifyou are drying at temperaturesover 250° F (121°C), or if youare drying small amounts ofmaterial. An amount less than50% of the dryer’s rated capac-ity is considered small. See ADDING AN AFTERCOOLER.If you have an aftercooler, goto the next step.

Turn on the water supply, orfix the problem that preventswater from flowing throughthe aftercooler. The water flowmust equal at least 3 gallons(11.36 liters) per minute at 90°F (32° C).

Clean the aftercooler coils.See MAINTENANCE: CLEANING

THE AFTERCOOLER COILS.



SHUT DOWNALARMS




Alarm

The dryer did notcalibrate temperaturecorrectly.

The RTD tempera-ture sensor at thedrying hopper inlethas failed.

The dryer shut downbecause the desiccanttank carousel did notrotate from one posi-tion to the next with-in the correct time.

Possible causeElectrical interference ora controller problem pre-vented correct calibrationof temperature.

Is the RTD probe (dryingtemperature sensor) con-nected correctly?

Is the RTD probe dam-aged?

Is the limit switch adjust-ed correctly?

Is the bed-drive motordamaged?

Is there contaminationbetween the bed plates?

SolutionTurn the power off and backon. Press to resume nor-mal operation. Contact Conairservice if you cannot clear theerror message by cyclingpower off and on, or if the cal-ibration error continues tooccur.

Verify that the RTD probe isplugged into the receptacle onthe electrical enclosure andthat the cable is not damaged.

If the connections are correct,the probe or cable is probablydamaged. Check for obvioussigns of damage, and replace ifnecessary.

Adjust the limit switch so thatit drops into the valley alongthe edge of the bed plate. SeeAdjusting the Limit Switch.

Check the voltage and electri-cal connections to the bed-drive motor. If you find 110 Vand secure connections, themotor is damaged. Replace themotor.

Remove the upper bed plate.Spray the surfaces with a non-oil based cleaning liquid andwipe with a soft cleaning rag.Reassemble the bed plates.

SHUT DOWNALARMS

RUN

SC Carousel Dehumidifying Dryer UGD016/07006-8 TROUBLESHOOTING

Alarm

The dryer detectedexcessive heat in theprocess heater box,or the high tempera-ture sensor failed.

NOTE: When this alarmoccurs, the alarm lightdoes not illuminate.Instead, Err 07 flashes inthe display windows.

The dryer detectedexcessive heat in theregeneration heaterbox.

Possible cause

Was there a loss of poweror improper shut downusing the Power ON/OFFswitch or the main powerdisconnect?

Was there an electricalshort in a heater contac-tor?

Is the high temperaturesensor adjusted correctly?

Did the microprocessorboard fail?

Was there a loss of poweror improper shut downusing the Power ON/OFFswitch or the main powerdisconnect?


Did the microprocessorboard fail?

Solution

Turn power to the dryer offand then on. Allow the dryer tocool, then press to restart.The power interruption pre-vented the heaters from cool-ing down after normal opera-tion. This may have triggered ahigh-temperature alarm.

Disconnect power. Check con-tinuity of the process heatercontactor output. See CHECKING

HEATER CONTACTORS.

The high temperature shouldbe set at 250° F (121° C)

Contact Conair service.

Turn power to the dryer offand then on. Allow the dryer tocool, then press to restart.The power interruption pre-vented the heaters from cool-ing down after normal opera-tion. This may have triggered ahigh-temperature alarm.

Disconnect power. Check con-tinuity of the process heatercontactor output. See CHECKING

HEATER CONTACTORS.


SHUT DOWNALARMS

RUN

RUN




When a passive alarm lights, the dryer has detected a problemthat could prevent correct drying of your material. When apassive alarm occurs:

� The alarm light turns on.� The dryer continues to operate.� Pressing the Push To Read button displays an error code.

PASSIVEALARMS

Alarm

The regenerationblower overload hastripped. The bloweris drawing excessivecurrent.

WARNING:Only qualified

electrical service per-sonnel should examineand correct problemsthat require openingthe dryer’s electrical enclosure or checkingelectrical current todiagnose the cause ofa problem.

Possible cause

Is the correct voltage sup-plied to the dryer?

Is the blower overloadtripped?

Did the pressure switchfail in the open position?

Is the blower damaged?

Solution

Check voltage to and from thetransformer. Main power sup-ply voltage should match therating on the dryer name plate.Voltage from the transformerto the blower should be 110V.If voltage is incorrect, makesure the transformer is wiredcorrectly.

Disconnect power and openthe electrical enclosure. Pressthe overload reset button toresume operation. SeeCHECKING MOTOR OVERLOADS.

Using an ohmeter, test the con-tinuity of the switch when youstart the dryer. If the switchdoes not close, replace it.

Replace the blower, if supplyvoltage, transformer wiringand overload settings are cor-rect, but the blower continuesto draw excessive current.



� The alarm light turns on.� The dryer continues to operate.

PASSIVEALARMS

Alarm

The regenerationtemperature is toolow.

WARNING:Only qualified electri-cal service personnelshould examine andcorrect problems thatrequire opening thedryer’s electrical enclo-sure or checking elec-trical current to diag-nose the cause of aproblem.

Possible cause

Is the regeneration filterclogged?

Are there any leaks in theregeneration air circuit?

Is the regeneration tem-perature sensor installedcorrectly?


Did a regeneration heaterelement fail?

Did the regenerationblower fail?

Is the desiccant contami-nated?

Solution

Clean the regeneration filter.

Check hoses, gaskets and O-rings. Replace any that arecracked or excessively worn.make sure hose clamps aresecure.

Verify that the temperaturesensor is positioned properly atthe outlet of the regenerationheater box.

Disconnect power. Check con-tinuity of the regenerationheater contactor outputs. SeeCHECKING HEATER CONTACTORS.

Check the regeneration heaterelements. Only qualified elec-trical service personnel shouldcheck amperage and voltagesof heater wires at the front ofthe dryer. See REPLACINGHEATER ELEMENTS.

Compare motor current to theamp rating on the motor name-plate. If currents, do not matchand the transformer is wiredcorrectly, replace the blower.

If air and electrical circuitswork correctly, the problemprobably is contaminated des-iccant. See REPLACINGDESICCANT TANKS.



� The alarm light turns on.� The dryer continues to operate.

PASSIVEALARMS

Alarm

The return air tem-perature sensor hasfailed.

The regenerationtemperature sensorhas failed.

The material levelinside the vacuumreceiver is too low.

Possible cause

Is the return air tempera-ture sensor connectedcorrectly?

Is the return air tempera-ture sensor damaged?

Is the regeneration temperature sensor connected correctly?

Is the regenerationtemperature sensordamaged?

This error code should beactive only on SC-MDCmodel dryers.

Solution

Verify that the return air tem-perature sensor wire is con-nected to the dryer’s micro-processor board. Refer to thewiring diagrams that camewith your dryer.

Check the sensor for damage,and replace if necessary.

Verify that the regenerationtemperature sensor wire is con-nected to the dryer’s micro-processor board. Refer to thewiring diagrams that camewith your dryer.

Check the sensor for damage,and replace if necessary.

Contact Conair service if thiserror code is displayed on anSC dryer that has not beenequipped for mobile dryingand conveying.


Symptom

Turning the PowerON/OFF switchdoes not turn onthe dryer control.

Possible cause

Is the main power supplyto the dryer on?

Has the dryer blown afuse?

Is the microprocessorboard in the dryer dam-aged?

Solution

Verify that the main powersupply is on and that thedryer’s main power disconnectdial is in the ON position.

Disconnect power. Open thedryer’s electrical enclosure andcheck the main power fuses.See REPLACING FUSES.


DRYER WILLNOT POWER UP

You have a problem with the main power circuit or the dryer’smicroprocessor board, if the dryer control panel does not lightwhen the Power ON/OFF switch is turned to the ON position.

Disconnect power.

Open the electrical enclosure door.

Check the fuse.If necessary, pull the fuse out and replace it with a fuse ofthe same type and rating.

Disconnect power.

Open the electrical enclosure.

Locate the process or regeneration contactors.Refer to the wiring diagrams that came with your dryer.

Check continuity using an ohmmeter.


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AB C

D

A

M

9 82-T1

4-T2

6-T3

2

3

1

23

1

4

Process heater contactorsIf ohms equal zero or infinity,replace the contactor.

REPLACINGFUSES

CHECKINGHEATERCONTACTORS

IMPORTANT:Always refer to thewiring diagrams thatcame with your dryerto locate specific elec-trical components.Illustrations in the UserGuide are intended tobe representative only.

IMPORTANT:Always refer to thewiring diagrams thatcame with your dryerto locate specific elec-trical components.Illustrations in theUser Guide areintended to be repre-sentative only.

Regenerationheater contactorsIf ohms equal zero or infinity,replace the contactor.

Fuse BlockTo locate the appropriatefuse and replacementpart, refer to the wiringdiagrams that came withyour dryer.


CHECKING ORREPLACINGTEMPERATURESENSORS

The SC dryer uses RTD sensors to monitorthe temperatures of the drying air, the returnair, the regeneration exhaust and the regenera-tion and process heater boxes.

To check or replace an RTD sensor:

Disconnect and lockout the main power supply.

Remove dryer panels, as necessary.

Locate the temperature sensor.

Check the sensor position and condition.Temperature readings will be incorrect, if the sensor istouching the wall of an air hose or pipe or if the sensor orwiring is damaged. The tip of the sensor should be cen-tered within the air hose or pipe. Sensor wires should beattached to the appropriate connection points on the dryer’selectrical enclosure or microprocessor board.

Replace the sensor, if necessary.

IMPORTANT:Always refer to thewiring diagrams thatcame with your dryer tolocate specific electricalcomponents.Illustrations in the UserGuide are intended tobe representative only.

Process (drying air)temperature probe

Return air temperature sensor

Regenerationtemperature sensor

Process hightemperature switch

23

1

4

5


Disconnect power.

Open the electricalenclosure door.

Check the overload.If the blue reset button isout, the overload hastripped. Press the buttonto reset the overload andresume normal operation.

If the overload continuesto trip, check the overloadsettings. The factory set-ting for the overload is theblower’s amp rating plus0.1 amp.

1L1

3L2

5L3

10E

T12

T24

T36

N.O.14

R

AB C

D

A

M

9 82-T1

4-T2

6-T3

21 CHECKING

MOTOROVERLOADS

IMPORTANT: Always refer to the wiring diagramsthat came with your dryer to locate specific electricalcomponents. Illustrations in the User Guide areintended to be representative only.

R

AB C

D

A

M

9 82-T1

4-T2

6-T3

3


Stop the dryer.Disconnect and lockoutthe main power.

Remove the carouselcover.

Loosen the screw on thelimit switch bracket.

Slide the bracket left or right toposition the limit switch so that its smallroller drops into the valley on the bedplate. The roller should not hit the sta-tionary bottom plate.

Test for correct indexing of the carousel.Restore main power to the dryer. Hold the limit switch outof the valley on the carousel bed plate while you flip thetoggle switch to START. Once the bed plate starts turning,release the switch.

If everything is adjusted correctly:

� The carousel bed turns.� When the limit switch reaches the next valley in the

bed plate, the carousel should stop turning.

Reset the desiccant carousel.Continue indexing until the desiccant tanks return to thepositions they were in when the dryer shut down.

ADJUSTING THELIMIT SWITCH

3

4

1

2

Carouselcover

5

6


Disconnect power andremove the dryer’s backpanel.

Locate the appropriateheater box.

Detach the heater elementwires from the terminal stripabove the heater box. Eachelement has two wires.

Check continuity of theheater element wires.Replace any element thatshows an ohm reading of zeroor infinity.

Remove the heater cover.

Remove the insulation.Set the insulation aside forreassembly.

Remove the heater element assembly.Loosen the screws and pull theassembly out of the box.

Replace the faulty heaterelement(s). Remove the nutholding the element to theassembly plate. Pull the ele-ment out of the plate. Insertthe wires of a new elementthrough the plate. Secure theelement with the nut.

Reassemble. Follow steps inreverse order

REPLACINGHEATERELEMENTS2

3

RegenerationHeater

ProcessHeater

1

2

3 5

6

4

56

8

9

8

7TIP: For faster repairs,keep a spare heaterassembly that can beswapped for theassembly containing afaulty element.

Number of heating elementsProcess Regeneration

SC7.5 2 (450w) 2 (450w)

SC15 3 (450w) 3 (450w)

SC30 6 (450w) 3 (450w)

SC60 6 (900w) 3 (900w)

The SC Carousel Dryer has refillable desiccant tanks. Whendesiccant becomes clogged or contaminated, you shouldreplace the desiccant in all three tanks to ensure optimum per-formance.

Stop the dryer anddisconnect power.

Remove thecarousel cover.

Disconnect the hosefrom the desiccanttank.Loosen the hose clampwith a screw driver.

Lift the tank off thecarousel assembly.

Refill the tank withfresh desiccant.

Check the O-ringsin the carousel coupling.Replace any O-rings thatare cracked, worn ordamaged. Apply petrole-um jelly on the inside ofthe coupling around theO-ring.

Place the refilledtank on the carouselassembly. Make sure theinlet/outlet tube of thetank seats fully into theO-rings on the carouselpipe.

Connect the hose to the top of the tank.Secure with the hoseclamp.

Reinstall thecarousel cover.

REPLACINGDESICCANTTANKS

2

3

1

4

5

6

O-ring 7

8

9

TIP: It’s importantthat the new tanksare connected to thecorrect hoses. Markthe hoses as they aredisconnected, orreplace one tank at atime, to ensure thatyou install the newtanks in the correctpositions.



REFILLING THEDESICCANT TANK

When desiccant becomes clogged or contaminated, youshould replace the desiccant in all three tanks to ensure opti-mum performance.

Remove the desiccant tank from the carousel.See REPLACING DESICCANT TANKS.

Remove the screws on the tank end plate.

Remove the screen cap. Remove the two 1/4-20 nuts from the center post and pullthe screen cap out.

Remove the old desiccant.

Replace the gasket on the flange, if necessary.

Fill the tank with fresh desiccant.Fill the tank to the top of the band. Vibrate the tank for15 minutes, then add more desiccant until the desiccant islevel with the top of the band.

Reinstall the screen cap.Place the cap on the band. Install one of the 1/4-20 nutson the center post and tighten. Do not over-tighten.Install the second 1/4-20 nut and tighten.

Reinstall the tank end plate.Place the end plat on the tank and tighten the screws.

Reinstall the desiccant tank on the carousel.See REPLACING DESICCANT TANKS.

IMPORTANT: After fillingwith fresh desiccant,vibrate the tank for at least15 minutes. Add desiccantas needed until level withthe top of the band.

456

1

23

Strip and stick gasket

Fill to the top of the band

1/4-20 bolts

Screen cap

7

8

9

ADDING ANAFTERCOOLER

You can add an aftercooler to the SC Carousel Dryer by order-ing the optional aftercooler coils. Installation is easy.

The optional aftercooler requires a source of city, tower orchiller water and a discharge or return line. You can use waterat temperatures of 70 to 90° F (21° to 32° C). But the waterflow should be at least 3 gallons (11.36 liters) per minute.

Stop the dryer and dis-connect power.

Remove the aftercoolerhousing cover.

Insert the aftercoolercoils into the housing. Make sure the latches on thehousing are aligned with thelatch holes in the aftercoolercoil lid.

Secure the latches.

Connect the cooler inletto the water source.If a manual shut off valve isused, it should be mounted onthe inlet line.

Connect the cooler out-let to a discharge orreturn line.

TIP: Make the connectionswith flexible hose at least14 inches (35.5 cm) long.This allows you to easilyremove the cooler coils forcleaning.

1/2 inch NPTfemale couplings

4

5

6

32

1

2

3

56


SERVICE INFORMATION APPENDIX A-1IMS0002/0296

Conair has made the largest investment in customer support inthe plastics industry. Our service experts are available to helpwith any problem you might have installing and operatingyour equipment. Your Conair sales representative also can helpanalyze the nature of your problem, assuring that it did notresult from misapplication or improper use.

To contact Customer Service personnel, call:

From outside the United States, call: 814-437-6861

You can commission Conair service personnel to provide on-site service by contacting the Customer Service Department.Standard rates include an on-site hourly rate, with a one-dayminimum plus expenses.

If you do have a problem, please complete thefollowing checklist before calling Conair:

❒ Make sure you have all model, serial and parts listnumbers for your particular equipment. Servicepersonnel will need this information to assist you.

❒ Make sure power is supplied to the equipment.

❒ Make sure that all connectors and wires withinand between control systems and related components have been installed correctly.

❒ Check the troubleshooting guide of this manualfor a solution.

❒ Thoroughly examine the instruction manual(s)for associated equipment, especially controls.Each manual may have its own troubleshootingguide to help you.

❒ Check that the equipment has been operated asdescribed in this manual.

❒ Check accompanying schematic drawings for information on special considerations.

BEFORE YOU

CALL ...

HOW TO CONTACT

CUSTOMER

SERVICE

Additional manuals andprints for your Conairequipment may beordered through theCustomer Service orParts Departments fora nominal fee.

WE’RE HERETO HELP

APPENDIX A-2 WARRANTY INFORMATION IMS0003/0795

EQUIPMENTGUARANTEE

PERFORMANCEWARRANTY

WARRANTY

LIMITATIONS

Conair guarantees the machinery and equipment on this order,for a period as defined in the quotation from date of shipment,against defects in material and workmanship under the normaluse and service for which it was recommended (except forparts that are typically replaced after normal usage, such as fil-ters, liner plates, etc.). Conair’s guarantee is limited to replac-ing, at our option, the part or parts determined by us to bedefective after examination. The customer assumes the cost oftransportation of the part or parts to and from the factory.

Conair warrants that this equipment will perform at or abovethe ratings stated in specific quotations covering the equipmentor as detailed in engineering specifications, provided theequipment is applied, installed, operated and maintained in therecommended manner as outlined in our quotation or specifi-cations.

Should performance not meet warranted levels, Conair at itsdiscretion will exercise one of the following options:

� Inspect the equipment and perform alterations oradjustments to satisfy performance claims. (Chargesfor such inspections and corrections will be waivedunless failure to meet warranty is due to misapplica-tion, improper installation, poor maintenance practicesor improper operation.)

� Replace the original equipment with other Conairequipment that will meet original performance claimsat no extra cost to the customer.

� Refund the invoiced cost to the customer. Credit issubject to prior notice by the customer at which time aReturn Goods Authorization Number (RGA) will beissued by Conair’s Service Department. Returnedequipment must be well crated and in proper operatingcondition, including all parts. Returns must be prepaid.

Purchaser must notify Conair in writing of any claim and pro-vide a customer receipt and other evidence that a claim isbeing made.

Except for the Equipment Guarantee and PerformanceWarranty stated above, Conair disclaims all other warrantieswith respect to the equipment, express or implied, arising byoperation of law, course of dealing, usage of trade or other-wise, including but not limited to the implied warranties ofmerchantability and fitness for a particular purpose.

sc carousel dryer - conair · sc carousel dryer instant access parts and service (800) 458-1960...

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