SC Carousel Dryer - ConairThe SC Carousel Dehumidifying Dryer produces hot,low-dew point air that...

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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)-312-6001

Models 7.5 and 15, with PLC controls

UGD001/1196

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: UGD001/1196

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 1996 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 ........................................................2-4Specifications: CH10 and CH14 hoppers..............................2-5Specifications: CH16 hoppers ...............................................2-6

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 .........................................................4-2The temperature controller ....................................................4-2To start drying........................................................................4-3To stop drying ........................................................................4-3

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

TABLE OF

CONTENTS

UGD001/1196 SC Carousel Dehumidifying Dryer i

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

DIAGNOSTICSUnderstanding the alarm lights..............................................6-3Shut down alarms ..................................................................6-4

Alarm A.................................................................6-4Alarm B.................................................................6-6Alarm C ................................................................6-8

Passive alarms........................................................................6-8Alarm D ................................................................6-8Alarm E...............................................................6-10Alarm F...............................................................6-12

REPAIRReplacing fuses......................................................................6-5Checking switches and relays................................................6-5Replacing heater elements .....................................................6-7Adjusting the limit switch .....................................................6-9Adding an aftercooler ..........................................................6-11Replacing desiccant tanks....................................................6-13

APPENDIXService/Warranty information .......................... Appendix ASlide gate mounting options ............................ Appendix B

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

Option: Auto Start Timer ................................... Appendix COption: Dew point Monitor ............................... Appendix DOption: Remote Control Bracket ....................... Appendix E

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

SC Carousel Dehumidifying Dryer UGD001/1196ii

TABLE OF

CONTENTS

ALARMS

ALARMS

ALARMS

ALARMS

ALARMS

ALARMS

● 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

UGD001/1196 SC Carousel Dehumidifying Dryer 1-1

1-2 INTRODUCTION SC Carousel Dehumidifying Dryer UGD001/1196

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

1-3UGD001/1196 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.

CAUTION: High voltageThis equipment is powered by three-phase main voltage. Always disconnectand 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 exercisecaution around certain exterior surfacesthat can reach temperatures of 180˚ to200˚ F (82˚ to 93˚ C). These include thehopper door frame, the exterior of anuninsulated hopper, the return air hoseand the dryer’s process filter housing andmoisture 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.

INTRODUCTION

ATTENTION:READ THIS SO NO

ONE GETS HURT

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1-4 INTRODUCTION

CAUTION: Before performing maintenanceor repairs on this product, you should disconnectand lock out electrical power sources to preventinjury from unexpected energization or start-up. Alockable device has been provided to isolate thisproduct from potentially hazardous electricity.

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 fromelectrical power.

Turn the rotary disconnectswitch to Off, or O position.

Secure the device with anassigned lock or tag.

The equipment is now locked out.

WARNING: Before removing lockoutdevices and returning switches to the ON position,make sure that all personnel are clear of themachine, tools have been removed and all safetyguards reinstalled.

HOW TO USETHE LOCKOUTDEVICE

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IMS0001/0795

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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● Specifications: CH10/14 hopper.. 2-5● Specifications: CH16 hopper ...... 2-6

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 28 pounds (6.8 to

12.7 kilograms) 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 UGD001/1196

WHAT IS THESC CAROUSELDRYER?

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TYPICALAPPLICATIONS

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The small SC dryer canbe mounted beside thehopper on the throat of aprocessing machine, oron a floor stand. Twomobile floor stand designsare 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 2-3UGD001/1196 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 425˚ F (218˚ 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.

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SPECIFICATIONS: SC CAROUSEL DRYER

SC Carousel Dehumidifying Dryer UGD001/1196DESCRIPTION

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Standard model Economy model

SPECIFICATIONS: MAIN POWER SUPPLY WIRE

The main power wire must be:● Grounded and secured with a strain relief.● Correctly sized for the current drawn.

Allowable ampacities of Copper ConductorsU.S.A. Canada European Community

75˚C insulation 90˚C insulation 70˚C insulation; 40˚C ambient airConductor 30˚C ambient air 40˚C ambient air Ground wire Conductor MaximumSize AWG Maximum Full Load Amps Size AWG Size mm2 Full Load Amps

14 15 13 14 2,5 1612 20 17 12 4 2310 30 27 10 6 298 43 47 10 10 40

NOTE: Local or regional electrical guidelines may have specifications that differ from the above nation-al codes. You should comply with the codes for your area.

Model SC7.5 SC15 SC30 SC60Dimensionsinches (cm)

A 20.5 (54.6) 21.5 (54.6) 26.5 (67.3) 30.5 (77.5)B 25 (63.5) 25 (63.5) 28.25 (71.8) 30.0 (76.2)C 27.5 (69.9) 30.5 (77.5) 36.12 (91.7) 43 (109.2)D* 12.25 (31.1) 12.25 (31.1) 14.25 (36.2) 14.25 (36.2)E* 6.5 (15.2) 6.5 (15.2) 6.5 (16.5) 6.5 (16.5)F* 3.5 (8.9) 3.5 (8.9) 3.5 (8.9) 3.5 (8.9)

Weight lbs (Kg) 125 (56.8) 140 (63.5) 185 (83.9) 240 (108.8)Voltage / Total Amps208 V/3 phase/60 hz 11 A 10 A 15.2 A 25 A240 V/3 phase/60 hz 9.6 A 8.7 A 13.2 A 24 A380 V/3 phase/50 hz 5.6 A 5.5 A 8.2 A 14.7 A415 V/3 phase/50 hz 5.4 A 5 A 7.5 A 14.0 A480 V/3 phase/60 hz 4.0 A 4.3 A 6.7 A 12.8 A575 V/3 phase/60 hz 4.3 A 3.7 A 5.9 A 10.7 ATotal Kilowatts 2.8 KW (159 BTU/Min) 3.7 KW (208 BTU/Min) 5.05 KW (287 BTU/Min) 9.1 KW (517 BTU/Min)Air Flow ft3/min. (m3/min.) 7.5 (0.21) 15 (0.4) 30 (0.85) 60 (1.7)Drying Temperature ALL MODELS 150 -375˚F (66-191˚C)Dewpoint ALL MODELS -40˚F (-40˚C)

*Not applicable on economy models

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SPECIFICATIONS:CH10 DRYING HOPPER

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Insulated hopper

Uninsulated hopper

Model CH10-1 CH10-1.5Insulated Uninsulated Insulated Uninsulated

Dimensionsinches (CM)

A 12.5 (31.8) 10 (25.4) 12.5 (31.8) 10 (25.4)B 33.5 (85.1) 33.5 (85.1) 48 (121.9) 48 (121.9)C 39.5 (100.3) 39.5 (100.3) 54 (137.2) 54 (137.2)D (optional flange) 6 (15.2) 6 (15.2) 6 (15.2) 6 (15.2)E 7.5 (19.1) 7.5 (19.1) 7.5 (19.1) 7.5 (19.1)F 31 (78.7) 29.75 (75.6) 31 (78.7) 29.75 (75.6)

Hopper weight lbs (Kg) 40 (18.1) 25 (11.3) 50 (22.7) 35 (15.8)Mounting frame weight 30 (13.6) 30 (13.6) 30 (13.6) 30 (13.6)

Volume Ft3 (liters) 1 (28.3) 1 (28.3) 1.5 (42.5) 1.5 (42.5)

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


3 inches(7.62 cm)

square


1 inch(2.54 cm)diameter

DISCHARGE

ASSEMBLY

standard optional

DESCRIPTION 2-5UGD001/1196 SC Carousel Dehumidifying Dryer

Model CH14-2 CH14-3Insulated Uninsulated Insulated Uninsulated

Dimensionsinches (CM)

A 17 (43.2) 14 (35.6) 17 (43.2) 14 (35.6)B 37 (94.0) 37 (94.0) 48 (121.9) 48 (121.9)C 43 (109.2) 43 (109.2) 54 (137.2) 54 (137.2)D 6 (15.2) 6 (15.2) 6 (15.2) 6 (15.2)E 6.5 (16.5) 6.5 (16.5) 6.5 (16.5) 6.5 (16.5)F 36.75 (93.4) 35.25 (89.5) 36.75 (93.4) 35.25 (89.5)

Hopper weight lbs (Kg) 70 (31.7) 40 (18.1) 80 (36.3) 50 (22.7)Mounting frame weight 35 (15.9) 35 (15.9) 35 (15.9) 35 (15.9)

Volume Ft3 (liters) 2 (56.6) 2 (56.6) 3 (85) 3 (85)

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SPECIFICATIONS:CH14 DRYING HOPPER

Insulated hopper

Uninsulated hopper


5 inches(12.7 cm)

square




3 inches(7.62 cm)

square



DISCHARGE

ASSEMBLY

standard optional

● 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 UGD001/1196

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Dryinghopper

Mountingadapter(optional)

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 3/8-16 countersunk 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.

Hopperbase plate

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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, three-phase power source supplyingthe correct current for your dryer model. Check thedryer’s serial tag for the correct amps, voltage and cycles.Field wiring should be completed by qualified personnelto the planned 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 with temperatures up to 90˚ F (32˚ C). Pipeshould be run to the planned dryer location. Use flexiblehose 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 3-3UGD001/1196 SC Carousel Dehumidifying Dryer

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PREPARING FORINSTALLATION


5 inches(12.7 cm)

square




3 inches(7.62 cm)

square



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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 UGD001/1196

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.

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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.

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Dryinghopper


Hopperbase plate

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

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Remove the hopper base plate and bolts from the bagattached to the mounting bracket/ discharge assembly.

Place the aluminum ring on themounting bracket / discharge assembly.

Bolt the base plate tothe hopper bottom.Use the four 3/8-16 counter-sunk bolts provided.

Place the slide gate on theprocessing machine throat.Position the slide gate so that itsbolt holes line up with the holes thatwere drilled in the throat. If hole patternsdo not match, bolt a mounting adapterbetween the throat and slide gate.

Bolt the support frame and dis-charge to the throat.Using four 3/8-16 (M 10) self-lockingbolts, fasten the support frame, dischargeand slide gate to the throat. The boltsmust be long enough to reach atleast 1/2 inch (1.25 cm) into themounting adapter or processingmachine throat after passingthrough the discharge assembly,support frame and slide gate.

Lift and bolt the hopper to the support frameand discharge assembly.Lift the hopper with a hoist, using the lug nuts provided.Align the bolt holes and fasten, using the four 3/8-16self-locking bolts provided.

Lift the dryer onto the support frame.Lift using a hoist and strap.Align the three bolt holes onthe bottom of the dryer withthe three bolt holes on thetop of the support frame.Make sure the acorn nuts onthe bottom of the dryer fit inthe holes on the supportform. Fasten the dryer to theframe with 1/4-20 bolts.


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MOUNTINGDRYER ANDHOPPER ON APROCESSINGMACHINE

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NOTE: You may positionthe drain port and slidegate to face the directionthat best suits your mainte-nance and operation rou-tines. The slide gate alsocan be mounted betweenthe hopper and dischargeassembly. See “Slide GateMounting Options” in theAppendix.

1

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 UGD001/1196

MOUNTING THEDRYER ON AFLOOR STAND;HOPPER ON THETHROAT

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Dryinghopper


Dischargeassembly

Floor stand

Hopperslide gate

SC Dryer

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.

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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.

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

You need to assemble the hopper and discharge beforemounting the hopper on the throat of the processingmachine.

Bolt the discharge to the hopper bottom.Use the four 3/8-16 bolts with lock washers provided.

Place the slide gate on the throat of theprocessing machine.Position the slide gate so that itsbolt holes line up with the holesthat were drilled in the throat. Ifhole patterns do not match, bolt amounting adapter between the throat andslide gate.

Lift the hopper onto the throat.Lift the hopper with a hoist, using thelifting lugs provided. Makesure you align the bolt holes inthe throat with the bolt holeson the slide gate and dischargeassembly.

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

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

Align the three bolt holeson the bottom of the dryer withthe three bolts holes on the top ofthe floor stand.

Bolt the dryer to the standusing the three 1/4-20 bolts pro-vided.


MOUNTINGTHE HOPPER

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MOUNTINGTHE DRYER

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NOTE: You mayposition the drainport and slide gateto face the directionthat best suits yourmaintenance andoperation routines.The slide gate alsocan be mountedbetween the hopperand dischargeassembly. See “SlideGate MountingOptions” in theAppendix.

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 UGD001/1196

CONNECTINGAIR HOSES

CONNECTINGWATER HOSES

1 Attach the 2 1/2-inch (6.4 cm)hose to the return air inlet in thebase of the aftercooler housing andto the return air outlet at the top ofthe hopper.

2 Attach the 2-inch(5.1 cm) insulatedhose to the delivery airoutlet in the base of thedryer and to the hop-per’s delivery 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.

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1/2 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 cableinto the dryer controlbox. Coil any excess cableand secure with a wire tie.

Open the dryer’s electrical enclosure.Turn the disconnect dial on the dryer door to theOff position. Lock out the main power. Turn thecaptive screw, and swing the door open.

Insert the mainpower wire throughthe knockout in the sideof the enclosure. Securethe wire with a rubbercompression fitting orstrain relief.

Connect the powerwires to the three ter-minals at the top of thedisconnect holder.

Connect the ground wire to eithergrounding point shown in the diagram.


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

CONNECTINGTHE RTDPROBE

CONNECTINGTHE MAINPOWER

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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.

O

SC Carousel Dehumidifying Dryer UGD001/1196

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. You should perform this test with nomaterial in the hopper.

Make sure there is no material in the hopper.If you have mounted a loader or vacuum receiver on the

hopper, disconnect the material inlet hose at the source.

Turn on the main power to the dryer.Make sure the dryer’s disconnect dial andEmergency Stop button are in the on position.

If everything is installed correctly:

◆ The dryer control’s white power-on light turns on.◆ The temperature controller display turns on.◆ Temperature controller runs a self-diagnostic test.

The following sequence will display briefly:

Set the drying temperature.Press the up or down arrow on the temperature controlleruntil the setpoint temperature you want appears in thelower display.

Flip the toggle switch to START.If everything is installed correctly:

◆ The green 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 cor-rect position.

3-10 INSTALLATION

MOUNTING ALOADER ONTHE HOPPER

1

2

3

TESTING THEINSTALLATION

I

TEST1111

SET TEMPERATURE

OP

AL

88888888

SET TEMPERATURE

OP

AL

3013

SET TEMPERATURE

OP

AL

4STOP

START

UGD001/1196 SC Carousel Dehumidifying Dryer

Check for proper air flow. Remove the delivery air hose onthe dryer. Hold your hand nearthe outlet with the dryer on. Youshould feel air blowing out of thedryer.

Flip the toggle switch to STOP toturn off the dryer.If everything is installed correctly:

◆ The green drying light stays on fortwo minutes.

◆ The blowers continue running fortwo minutes 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

5Moistureexhaust

Deliveryair outlet

STOP

START6

UGD001/1196 SC Carousel Dehumidifying Dryer

● The dryer control panel .............. 4-2● The temperature controller ........ 4-2● To start drying ............................. 4-3● To stop drying ............................. 4-3

OPERATION


You operate the SC Carousel Dryer from the dryer’s controlpanel. The control panel may have been mounted in a remotelocation.

4-2 OPERATION SC Carousel Dehumidifying Dryer UGD001/1196

THE DRYERCONTROLPANEL

EMERGENCY

STOP

OPERATION

188188

SET TEMPERATUREDRYING

START

STOP

ALARMS

POWER

!

SHUTDOWN

TEMP. REGEN. AIRFLOW

CONAIRFRANKLINPower On

This light indicatesthe control panel isreceiving power.The light remainson even when theEmergency Stopbutton has beenactivated.

Start/StopToggleSwitch

Emergency Stop ButtonPush to turn off the dryer duringan emergency. Pull to restorepower before restarting.

Alarm LightsThese four lights can help youdiagnose problems. TheTroubleshooting section describestheir functions. NOTE: The airflow light should turn on brieflyeach time the carousel rotates.

188 188

SET TEMPERATURE

OP

AL

Drying LightThis light is on when the dryer is operating.

Actual temperature Setpoint

Decrease IncreaseChangefunction

Outputactive

Alarmactive

Message DisplaysMessage What it means Message What it means

TEST Self-test activated SnSr RTD sensor failed1111 FAIL or is loose

8888 Self-test working - - - - Air temperature not8888 LP.br reaching setpoint

- - - - Alarm setpoint - - - - Standby mode. TheAL.SP SET message will blink

from SET to OFF.

● To change from ˚F to ˚C: Cycle power OFFand ON. After the 4-digit configuration code(3013 or 3017) appears, press the Setup Key.The first digit of the code should blink. Press▼ until the fourth digit blinks. Press ▲ tochange the fourth digit to 7 for ˚C or 3 for ˚F. WARNING: Change only the fourth digit. Theconfiguration code must be 3013 for ˚F dryingor 3017 for ˚C drying. Changing other digits inthe code will harm dryer operation.

Press the Setup Key to save the change andexit. Press to exit without saving changes.

Temperature Controller

● To light the buttons: Touch any buttonon the temperature controller.

● To modify setpoint: Press ▲ and ▼.

● To change the process air temperaturealarm band: Press until you seeAL.SP in the setpoint display. Press ▲or ▼ to modify.NOTE: The alarm band is factory set at ± 20˚ F(± 11˚ C). Do not set the alarm band lower than± 5˚ F (± 3˚ C).

Setup Key

---- is actual temperature

Verify there is material in the hopper.

Turn on main power to the dryer.◆ The white power light turns on.◆ Temperature display turns on.◆ Temperature controller performs

self-diagnostic testing.

Set the drying temperature.Press the up or down arrow on the tem-perature controller until the setpoint tem-perature you want appears in the lowerdisplay.

Flip the toggle switch to START.◆ The green drying light turns on.◆ Both blowers turn on.◆ Heaters turn on.◆ If the desiccant tanks aren’t in their correct position,

the carousel will turn to the correct position.◆ The yellow air flow alarm light will turn on each

time the desiccant carousel indexes correctly.

Flip the toggle switch to STOP.◆ The drying light stays on and the

blowers continue running for twominutes to cool the heaters.

OPERATION 4-3UGD001/1196 SC Carousel Dehumidifying Dryer

1

2

3

4

1

TO STARTDRYING

NOTE: The drying light will not turn on if theEmergency Stop button is pushed in. Make sure thestop button is pulled out before starting the dryer.

I

188188

SET TEMPERATURE

STOP

START

TO STOPDRYINGSTOP

START

IMPORTANT: Do not use the Emergency Stopbutton to stop the dryer unless it is an emergency.Using the Emergency Stop button during normaloperation prevents cooling of the heaters and coulddamage your dryer. Using the Emergency Stop but-ton to stop the dryer also can trigger the ShutDown/High Temperature alarm during your next dry-ing cycle.

● Maintenance checklist .................. 5-2● Cleaning the hopper ..................... 5-3● Cleaning the process filter ........... 5-4● Cleaning the regeneration filter ...5-4● Cleaning the return air screen .... 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 UGD001/1196

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. Reach into the hopper.Grasp the spreader cone tube, lift up slightly, twist andthen push down to release it. Tilt the cone assembly andpull it out through the hopper door.

Clean the spreader cone andthe inside of the hopper.

Repeat the steps in reverseorder to reassemble the hopper before addingmaterial.

MAINTENANCE 5-3UGD001/1196 SC Carousel Dehumidifying Dryer

CLEANINGTHE HOPPER

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

2

3

5

4

1

6

1

2

Safety catch

Clogged filters reduce air flow and dryer efficiency. Cleaning frequen-cy depends on how much material you process and how 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, finesor dust.

Reassemble byrepeating the steps inreverse order.

A screen in the return air outlet ofthe hopper prevents material frombeing drawn into the dryer. Thisscreen may need to be cleaned.

Loosen the fasteners at thebase of the return air outlet.

Pull the screen and outletup out of the hopper.

Clean the screen, then reassem-ble. Make sure the outlet fits snugglyover the gasket in the hopper.

5-4 MAINTENANCE SC Carousel Dehumidifying Dryer UGD001/1196

CLEANING THEREGENERATIONFILTER

CLEANING THERETURN AIRSCREEN

23

1

4

2

3

1

CLEANING THEPROCESSFILTER

2

1

3

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.

UGD001/1196 SC Carousel Dehumidifying Dryer MAINTENANCE 5-5

CLEANING THEAFTERCOOLERCOILS

2

1

3

INSPECTHOSES ANDGASKETS

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● Understanding the alarm lights...6-3● Shut down alarms ........................ 6-4

Alarm A ........................ 6-4Alarm B ........................ 6-6Alarm C ........................ 6-8

● Passive alarms ............................ 6-10Alarm D ........................ 6-10Alarm E ........................ 6-12Alarm F ........................ 6-14

REPAIR● Replacing fuses ........................... 6-5● Checking switches and relays ....6-5● Replacing heater elements ......... 6-7● Adjusting the limit switch ........... 6-9● Adding an aftercooler ................. 6-11● Replacing desiccant tanks ..........6-13

TROUBLESHOOTING


ALARMS

ALARMS

ALARMS

ALARMS

ALARMS

ALARMS


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 standard SC Carousel Dryer is equipped with numeroussafety devices. Do not remove or defeat them. Improper cor-rective action can lead to hazardous conditions and shouldnever be attempted to sustain production

6-2 TROUBLESHOOTING

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

A FEW WORDSOF CAUTION

CAUTION: High voltage.Always turn off the SC Carousel dryer,disconnect and lock out the main powersource before troubleshooting or per-forming repairs.

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

!

BEFOREBEGINNING

EMERGENCY

STOP

OPERATION

188188


START

STOP

ALARMS

POWER

!

SHUTDOWN


CONAIRFRANKLIN

Swing the electricalenclosure awayfrom the front ofthe dryer to testheater elements,relays and pressureswitches.

Alarm lights indicatewhether the probleminvolves air flow,temperature orregeneration.

Open the electricalenclosure to checkfuses.

The alarm lights on the SC dryer control panel are associatedwith the temperature, regeneration and air flow circuits in thedryer.

A problem can trigger two types of alarms:● Shut Down (red):The dryer has automati-cally shut down becauseit detected a serious prob-lem that could damageyour material or facility.

● Passive (yellow): Thedryer continues to oper-ate, but warns of a prob-lem that could preventcorrect drying of yourmaterial. If ignored, thisproblem could lead to ashut-down condition.

The lights also can indicate multiple alarms.When more than one yellow light is on or blinking, more thanone alarm condition occurred. The multiple alarms may indi-cate problems that occurred at the same time, or a problemthat caused another problem to develop.

If this light is on:

Sensors near the process or regenera-tion heaters detected abnormally hightemperature (solid light) or no air flow(blinking light).

Temperatures in the process, or dry-ing air, circuit are above or belowthe setpoint alarm band.

The desiccant tank carousel did notrotate or index correctly.

Air returning from the hopper is toohot for desiccant to work at capacity.Dew point will suffer. (blinking light)

Temperature sensors indicate the des-iccant did not get hot enough to regen-erate. (blinking light)

Pressure switches indicate reduced airflow, probably caused by clogged fil-ters or damaged hoses. (solid light)

UGD001/1196 SC Carousel Dehumidifying Dryer TROUBLESHOOTING 6-3

EMERGENCY

STOP

OPERATION

188188


START

STOP

ALARMS

POWER

!

SHUTDOWN


CONAIRFRANKLIN

ALARMS

!

SHUTDOWN


!

SHUTDOWN


!

SHUTDOWN


!

SHUTDOWN


!

SHUTDOWN


!

SHUTDOWN


!

SHUTDOWN


Shutdown

alarms

Passivealarms

UNDERSTANDINGTHE ALARMLIGHTS

A

B

C

D

E

F

When the red Shut Down alarm lights, the dryer has detecteda problem or combination of problems that could damage yourplant or materials. When a malfunction triggers a Shut Downalarm:

◆ The dryer automatically shuts off.◆ The alarm light turns on or blinks on and off.◆ The temperature controller enters standby mode.◆ The power light remains on.

6-4 TROUBLESHOOTING SC Carousel Dehumidifying Dryer UGD001/1196

Alarm

Solid light:The dryer shut downbecause excessiveheat was detected inthe process or regen-eration heater box.

Blinking light:The dryer shut downbecause pressureswitches detected noair flow comingfrom the process orregeneration blower.

WARNING: Onlyqualified electricalservice personnelshould examine andcorrect problems thatrequire opening thedryer’s electrical enclosure or checkingelectrical current todiagnose the cause ofa problem.

ALARMS

!

SHUTDOWN


SHUT DOWNALARMS

A

Possible cause

Was there a loss of poweror improper shut downusing the EmergencyStop button?

Was there an electricalshort in a heater relay?

Did the regeneration orprocess blower fail, caus-ing the air flow pressureswitches to close?

Did an air flow pressureswitch fail?

Are the air lines blockedor disconnected?(If this is the cause, the AirFlow alarm light should haveturned on first.)

Solution

Flip the toggle switch toSTOP, and then to START. Thepower interruption preventedthe heaters from cooling downafter normal operation. Thismay have triggered a high-temperature alarm.

Disconnect power. Check con-tinuity of the process andregeneration heater relay out-puts. See Checking Switchesand Heater Relays.

❒ Disconnect power. Checkthe blower fuses, and replace ifneeded. See Replacing Fuses.

❒ Check motor current againstvoltage and amp rating on themotor nameplate. If currents,do not match, make sure thetransformer is wired correctly.If the transformer is wired cor-rectly, replace the blower.

Disconnect power. Check thecontinuity of the pressureswitches. See CheckingSwitches and Heater Relays.

❑ Straighten crimps. Removeany objects blocking air flowthrough hoses and tubes.

❑ Connect any loose hoses.❑ Clean or replace clogged

filters.

Disconnect power.

Open the electrical enclosure door.

Check the fuse.If necessary, pull thefuse out and replaceit with a fuse of thesame type and rating.

Disconnect power.Swing the electrical enclosure away from thefront of the dryer.

Locate the relay or switch terminals. Refer to thewiring diagrams that came with your dryer.

Check continuity using an ohmmeter.

TROUBLESHOOTING 6-5UGD001/1196 SC Carousel Dehumidifying Dryer

EMERGENCY

STOP

OPERATION

188188


START

STOP

ALARMS

POWER

!

SHUTDOWN


CONAIRFRANKLIN

2

3

1 REPLACINGFUSES

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

CHECKINGSWITCHESAND HEATERRELAYS

2

3

1

4

Pressure switchThe switch is normallyclosed. Replace if resis-tance is high or infinity.

Regenerationheater relaysIf ohms equal zero orinfinity, replace the relay.

Process heaterrelaysIf ohms equal zero orinfinity, replace the relay.

IMPORTANT:Always refer to thewiring diagrams thatcame with yourdryer to locate spe-cific electrical com-ponents. Illustrationsin the User Guideare intended to berepresentative only.

IMPORTANT:Always refer to thewiring diagrams thatcame with yourdryer to locate spe-cific electrical com-ponents. Illustrationsin the User Guideare intended to berepresentative only.


Alarm

The dryer has shutdown because thedrying, or processcircuit, temperatureis higher or lowerthan the setpointalarm band allows.

WARNING: Onlyqualified electrical ser-vice personnel shouldexamine and correctproblems that requireopening the dryer’selectrical enclosure orchecking electrical cur-rent to diagnose thecause of a problem.

ALARMS

!

SHUTDOWN


B

Possible cause

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

Is “LP.br” showing in thetemperature controllerdisplay?

Is the setpoint alarmband set too low?

Did a process heating ele-ment fail?

Did a process heaterrelay fail?

Solution

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

The RTD probe has failed or isno longer connected correctly.Make sure the probe is insertedin the delivery air inlet of thehopper, and that it is pluggedinto the control box. If theconnections are correct, theprobe is damaged. Replace it

Readjust the alarm band on thetemperature controller. Thealarm band should not be setlower than ± 5˚ F (± 3˚ C).

Check the process heater ele-ments. Disconnect power andcheck continuity across thethree process relay outputs tothe heater elements. Ohm read-ings should be about equal.Only electrical service person-nel should check amperage orvoltage of heater wires. SeeReplacing Heater Elements.

Disconnect power. Check thecontinuity of the relay outputs.If the ohm reading is zero ornear zero, replace the relay.See Checking Switches andHeater Relays.


◆ The dryer automatically shuts off.◆ The alarm light (or lights) turns on.◆ The temperature controller enters standby mode.◆ The power light remains on.

SHUT DOWNALARMS

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 ele-ment assembly. Loosen thescrews and pull the assembly outof 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

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


Alarm

The dryer shut downbecause the desic-cant tank carouseldid not rotate fromone position to thenext within the cor-rect time.

ALARMS

!

SHUTDOWN


C

Possible cause

Is the limit switch adjust-ed correctly?

Did the bed-drive motorcontrol blow a fuse?

Is the bed-drive motordamaged?

Solution

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

Disconnect power and openthe electrical enclosure. Checkthe bed-drive motor fuse, andreplace if necessary. For thefuse number and appropriatereplacement part, refer to thewiring diagrams that camewith your dryer.

Check the electrical connec-tions to the motor. If the fusesand the connections are inworking order, the motor isdamaged. Replace it.


◆ The dryer automatically shuts off.◆ The alarm light (or lights) turns on.◆ The temperature controller enters standby mode.◆ The power light remains on.

SHUT DOWNALARMS


Stop the dryer.Disconnect and lockoutthe main power.

Remove the carouselcover.

Loosen the screw on the limit 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

180180

1

2

Carouselcover

5

6


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 over130˚ F (54˚C).

When a yellow “passive” alarm lights, the dryer has detected aproblem that could prevent correct drying of your material.When a malfunction triggers a passive alarm:

◆ The alarm light (or lights) turns on.◆ The dryer continues to operate.

PASSIVEALARMS

ALARMS

!

SHUTDOWN


D

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. Refer tothe manuals for your convey-ing 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. Ifyou have an aftercooler, go tothe next step.

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

Clean the aftercooler coils.See Maintenance: Cleaningthe Aftercooler Coils.


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 up to 90˚ F (32˚ C). But the water flow shouldbe 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

6-12 TROUBLESHOOTING

Alarm

Regeneration of thedesiccant was unsat-isfactory. Desiccantexhaust did not reacha satisfactory tem-perature within thecorrect time duringthe regenerationcycle.

WARNING: Onlyqualified electrical ser-vice personnel shouldexamine and correctproblems that requireopening the dryer’selectrical enclosure orchecking electrical cur-rent to diagnose thecause of a problem.

ALARMS

!

SHUTDOWN


E




PASSIVEALARMS

Possible cause

Is the regeneration filterclogged?

Are there any leaks in theregeneration air circuit?

Was there an electricalshort in a heater relay?

Did a regeneration heaterelement fail?

Did the regenerationblower fail, causing theheater box to overheat?

Is the desiccant contami-nated?

Solution

Clean the regeneration filter.

Check hoses, gaskets and O-rings. Replace any that arecracked, torn or displayingexcessive wear. Make surehose clamps are secure.

Disconnect power. Check con-tinuity of the regenerationheater relay outputs. SeeChecking Switches andHeater Relays.

Check the regeneration heaterelements. Only qualified elec-trical service personnel shouldcheck amperages and voltagesof heater wires at the front ofthe dryer. See ReplacingHeater Elements.

❒ Disconnect power. Checkthe blower fuses. Replace ifneeded. See Replacing Fuses.❒ Check motor current againstvoltage and amp rating on themotor nameplate. If currents,do not match, make sure thetransformer is wired correctly.If the transformer is wired cor-rectly, replace the blower.

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

The SC Carousel Dryer has disposal desiccant tanks. Thetanks have been sealed, and should require no contact with thedesiccant. When desiccant becomes clogged or contaminat-ed, you should replace all three tanks to ensure optimumperformance.

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.

Discard the conta-minated tank.

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 a new tankon the carouselassembly. Make sure theinlet/outlet tube of thetank seats fully into theO-rings on thecarousel pipe.

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

Replace thecarousel cover.


REPLACINGDESICCANTTANKS

2

3

1

4

5

6

O-ring7

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.


Alarm

The differential pres-sure switch detectedinadequate air flowin the process cir-cuit.

WARNING: Onlyqualified service per-sonnel should examineand correct problemsthat require openingthe dryer’s electricalenclosure or checkingelectrical current todiagnose the cause.

NOTE: This alarmlight should turn onbriefly each timethe carouselrotates correctly.

ALARMS

!

SHUTDOWN


F

Possible cause

Is the process filterclogged?

Are the delivery or returnair hoses restricted orloose?

Did the differential pres-sure switch fail?

Is the desiccant cloggedor degraded?

Solution

Clean the process filter.

❑ Straighten crimps or removeany objects that may haverestrict air flow throughhoses and tubes.

❑ Connect any loose hoses..

Disconnect power. Check thecontinuity of the differentialpressure switch. The switch isnormally open. Replace ifresistance is low or zero.

If the process air filter, hosesand pressure switch operatecorrectly, the problem proba-bly is clogged desiccant.Replace all three desiccanttanks. See ReplacingDesiccant Tanks.



PASSIVEALARMS

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.

SERVICE INFORMATION APPENDIX A-1IMS0002/0296

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

EQUIPMENTGUARANTEE

PERFORMANCEWARRANTY

WARRANTY

LIMITATIONS

IMS0003/0795

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 asfilters, liner plates, etc.). Conair’s guarantee is limited toreplacing, at our option, the part or parts determined by us tobe defective after examination. The customer assumes the costof transportation 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 equip-ment or 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, arisingby operation of law, course of dealing, usage of trade or oth-erwise, including but not limited to the implied warranties ofmerchantability and fitness for a particular purpose.

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