SC Carousel Dryer Standard Models 7.5, 15, 30 and 60 WARNING - Reliance on this Manual Could Result in Severe Bodily Injury or Death! This manual is out-of-date and is provided only for its technical information, data and capacities. Portions of this manual detailing procedures or precautions in the operation, inspection, maintenance and repair of the product forming the subject matter of this manual may be inadequate, inaccurate, and/or incomplete and cannot be used, followed, or relied upon.
Please record your equipment’s model and serial number(s) and the date you receive it in the spaces provided. It’s a good idea to record the model and serial number(s) of your equipment and the date you received it in the User Guide. Our service department uses this information, along with the manual number, to provide help for the specific equipment you installed. Please keep this User Guide and all manuals, engineering prints and parts lists together for documentation of your equipment.
INTRODUCTION .........................................1-1 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 TABLE OF CONTENTS DESCRIPTION ........................
TABLE OF CONTENTS TROUBLESHOOTING (continued) .................. 6–1 DIAGNOSTICS How to identify the cause of a problem ................................6-3 Shut down alarms ..................................................................6-4 Err 01.................................................................................6-4 Err 02.................................................................................6-5 Err 03.............................................................................
INTRODUCTION ● 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 ..
PURPOSE OF THE USER GUIDE This User Guide describes the Conair SC series of carousel dehumidifying dryers and explains step-by-step how to install, operate, maintain and repair this equipment. HOW THE GUIDE IS ORGANIZED Symbols have been used to help organize the User Guide and call your attention to important information regarding safe installation and operation.
We design equipment with the user’s safety in mind. You can avoid the potential hazards identified on this machine by following the procedures outlined below and elsewhere in the User Guide. ATTENTION: READ THIS SO NO ONE GETS HURT WARNING: High voltage This equipment is powered by single- or three-phase main voltage. Always disconnect and lock out the main power source before servicing. To help you, we’ve equipped the dryer with a lockable, electrical disconnect device.
HOW TO USE THE LOCKOUT DEVICE CAUTION: Before performing maintenance or repairs on this product, you should disconnect and lock out electrical power sources to prevent injury from unexpected energization or start-up. A lockable device has been provided to isolate this product from potentially hazardous electricity. Lockout is the preferred method of isolating machines or equipment from energy sources. Your Conair product is equipped with the lockout device pictured below.
DESCRIPTION ● What is the SC Carousel Dryer? .. 2-2 ● Typical applications ...................... 2-2 ● How it works .................................. 2-3 ● Specifications: SC Dryer...............
WHAT IS THE SC CAROUSEL DRYER? The SC Carousel Dehumidifying Dryer produces hot, low-dew point air that removes moisture from hygroscopic plastics. The dryer pulls warm, moist air from a drying hopper and pumps it through dehumidifying desiccant. The dryer then heats the air to the drying temperature you selected and circulates it through the material in the hopper.
The SC Carousel Dryer achieves continuous, closed loop drying by passing air simultaneously through two heaters and three tanks of molecular sieve desiccant. HOW IT WORKS The Process (Drying) Cycle The process blower pulls moist air from the top of the drying hopper. The air passes through the process filter and aftercooler into the dryer’s desiccant tank, where moisture is removed. The now-dry air moves through the process heater, where it is heated to the drying temperature selected by the operator.
SPECIFICATIONS: SC CAROUSEL DRYER MODEL SC7.5 SC15 SC30 SC60 Performance 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.
INSTALLATION ● 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 ...............
UNPACKING THE BOXES The SC carousel dryer comes in one to four boxes, depending on the models and options ordered.
PREPARING FOR INSTALLATION The SC Dryer is easy to install, if you plan the location and prepare the mounting area properly. 1 Make sure the mounting area provides: ❒ A grounded power source supplying the correct current for your dryer model. Check the dryer’s serial tag for the correct amps, voltage, phase and cycles. Field wiring should be completed by qualified personnel to the planned location for the dryer. All electrical wiring should comply with your region’s electrical codes.
MOUNTING DRYER AND HOPPER ON A PROCESSING MACHINE WARNING: You are responsible for the structural integrity of this installation. We recommend that you: ● Use bolts no smaller than 3/8 inch (M 10) when mounting the hopper/dryer combination to the throat of a processing machine. ● Do not mount the hopper/dryer combination on a plate that swings away or slides away from the processing machine throat. Either remove the swing or slide plate, or mount the dryer on a floor stand.
MOUNTING DRYER AND HOPPER ON A PROCESSING MACHINE The drying hopper, slide gate, support frame and discharge assembly may have been shipped fully assembled. You can remove the drying hopper from the support frame, if you find it easier to lift and bolt the frame and then the hopper to the throat of the processing machine. 1 Lift the hopper, support frame and discharge assembly onto the processing machine throat. Use a hoist to lift the support frame and hopper.
MOUNTING THE DRYER ON A FLOOR STAND; HOPPER ON THE THROAT WARNING: You are responsible for the structural 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 processing machine.
CAUTION: To prevent accident and injury, lift the empty hopper onto the throat of the processing machine using a hoist and the lifting lugs provided. Lift the dryer onto the floor stand using a hoist and strap. 1 Lift the hopper onto the throat. 2 Bolt the hopper to the throat of the machine. MOUNTING THE HOPPER Lift the hopper with a hoist, using the lifting lugs provided. Make sure you align the bolt holes in the throat with the bolt holes on the discharge assembly.
CONNECTING AIR HOSES Using the two flexible hoses provided, connect the inlets and outlets of the drying hopper to the dryer. If you have mounted the dryer on a floor stand, make sure the dryer is located no more than 5 feet (1.5 m) from the hopper to reduce heat loss. 1 Attach the larger diameter hose to the return air inlet in the base of the aftercooler housing and to the return air outlet at the top of the hopper.
The RTD probe monitors the temperature of the drying air as it enters the hopper. If the probe is not installed correctly, temperature readings will be inaccurate. 1 CONNECTING THE RTD PROBE Insert the probe in the delivery air inlet at the top of the hopper. The end of the probe must not touch the walls of the inlet. Tighten the nuts to lock the probe in place. 2 Plug the probe’s cable into the receptacle on the side of the electrical enclosure. Hand tighten the connector.
MOUNTING A LOADER ON THE HOPPER If you have a Conair loader or vacuum receiver, you can use the flange and mounting clips provided on the top of the hopper. Refer to the manuals that came with your receiver or loader for detailed installation instructions. TESTING THE INSTALLATION You have completed the installation. Now it’s time to make sure everything works. 1 Make sure there is no material in the hopper. 2 Turn on main power to the dryer.
6 Check for proper air flow. Remove the delivery air hose on the dryer. Hold your hand near the outlet with the dryer on. You should feel air blowing out of the dryer. CAUTION: Hot surface Do not place your hand on the delivery air outlet. The outlet and the air can get hot enough to burn your hand. 7 TESTING THE INSTALLATION Moisture exhaust Delivery air outlet Press the STOP button.
OPERATION ● 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 ............................
THE DRYER CONTROL PANEL Run/Stop Buttons Press RUN to start drying. Press STOP to stop drying. Status Lights Display Windows The upper window displays the actual temperature of drying air entering the hopper. The lower window displays setpoint values. When there is an alarm, the windows display error codes. Power = On when the control has power. Drying = On when the dryer is running. Alarm = On when the dryer detects a problem.
Dryer functions are values that you can set or monitor in the Actual and Setpoint display windows. Press the Function Select ▲ or ▼ buttons until the number of the function you want to set or monitor appears in the Function window. SC DRYER FUNCTIONS Adjustable functions: No. Function Description 1 Drying Setpoint Used to set the drying temperature that was recommended by the resin manufacturer.
TO START DRYING 1 Make sure there is material in the hopper. 2 Turn on the main power to the dryer. ON I O O F F Re se t Make sure the dryer’s disconnect dial is in the on position. + IP TR 5 3 3 4 Turn the power switch into the ON position. If everything is installed correctly: ◆ The Actual and Setpoint windows briefly display ConAir, then change to the actual temperature and a setpoint temperature of 150° F (65° C). ◆ The Function Select display changes from _ to 1.
1 Press STOP . ◆ The drying light turns off. The blowers continue running for a few minutes to cool the heaters. 2 Turn the ON/OFF switch to OFF after the blowers stop running. Be sure to disconnect and lockout the main power if you have stopped the dryer to perform maintenance or repair. TO STOP DRYING IMPORTANT: Do not use the power ON/OFF switch to stop the dryer.
SETTING LOW AND HIGH SETPOINT LIMITS You can protect your drying process by preventing someone from entering setpoint temperatures above or below an acceptable level for the material. You can also set the high and low limits equal to the setpoint temperature to prevent accidental or unauthorized changes to the setting during operation. 1 2 3 4 Turn on the main power to the dryer. Turn the power switch to the ON position. Select Function 4.
MAINTENANCE ● 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 ..........
PREVENTATIVE MAINTENANCE CHECKLIST Routine maintenance will ensure optimum operation and performance of the SC Carousel Dryer. We recommend the following 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 than weekly. Frequency depends on how much material you process and how dusty or full of fines it is.
CLEANING THE HOPPER CAUTION: Hot surfaces. Always protect yourself from hot surfaces inside and outside the dryer and drying hopper. The hopper, spreader cone and discharge assembly should be cleaned thoroughly between material changes to prevent resin contamination. Place a container beneath the hopper’s drain port to catch the material. . 1 2 Close the hopper slide gate. Remove the drain-port plug. Pull the pin and allow the plug to drop. 1 2 3 After draining material, open the hopper door.
CLEANING THE PROCESS FILTER Clogged filters reduce air flow and dryer efficiency. Cleaning frequency depends on how much material you process and how dusty it is. 1 Loosen the knob 2 3 Clean the filter box. Remove the filter 4 Reassemble by below the process filter box and remove the box. by turning the metal end cap. Clean the filter. If the filter is worn, damaged or clogged, replace it. repeating the steps in reverse order.
If you have the optional aftercooler, you need to clean the cooling coils to keep them working efficiently. Cleaning frequency depends on the type and amount of material you process. 1 Release the latches at 2 Pull the coils out of the aftercooler housing. 3 Clean the coils with high-pressure steam, then reassemble. COILS the top of the aftercooler. Loose or damaged hoses and gaskets can allow moisture to seep into the closed-loop drying system.
TROUBLESHOOTING ● 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 ............................ 6-9 Err 09 through Err 13 ● Dryer will not power up ............... 6-12 REPAIR ● Replacing fuses ........................... 6-13 ● Checking heater contactors ........
BEFORE BEGINNING You can avoid most problems by following the recommended installation and maintenance procedures outlined in this User Guide. If you do have a problem, this section will help you determine 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. Open the electrical enclosure to check fuses and heater contactors.
Most dryer malfunctions are indicated by an illuminated alarm light 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 damage your material or facility. ● Passive: The dryer continues to operate, but warns of a problem that could prevent correct drying of your material. If ignored, this problem could lead to a condition that will shut down the dryer.
SHUT DOWN ALARMS Alarm The process blower overload has tripped. The blower is drawing excessive current. When a shut down alarm lights, the dryer has detected a problem or combination of problems that could damage your dryer or 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.
When a shut down alarm lights, the dryer has detected a problem or combination of problems that could damage your dryer or 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. Alarm The RTD probe at the drying hopper inlet sensed that the actual drying temperature is more than 20° F (7° C) higher or lower than the setpoint.
SHUT DOWN ALARMS Alarm Dew point will suffer because the air returning from the hopper is too hot for the desiccant to work at capacity. The return air sensor has been set to alarm at temperatures over 180° F (64°C). When a shut down alarm lights, the dryer has detected a problem or combination of problems that could damage your dryer or materials. When a shut down alarm occurs: ◆ The dryer automatically shuts off. ◆ The alarm light turns on. ◆ The power light remains on.
When a shut down alarm lights, the dryer has detected a problem or combination of problems that could damage your dryer or 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. Alarm Possible cause Solution Electrical interference or a controller problem prevented correct calibration of temperature. Turn the power off and back on.
SHUT DOWN ALARMS Alarm The dryer detected excessive heat in the process heater box, or the high temperature sensor failed. NOTE: When this alarm occurs, the alarm light does not illuminate. Instead, Err 07 flashes in the display windows. The dryer detected excessive heat in the regeneration heater box. When a shut down alarm lights, the dryer has detected a problem or combination of problems that could damage your dryer or materials. When a shut down alarm occurs: ◆ The dryer automatically shuts off.
When a passive alarm lights, the dryer has detected a problem that could prevent correct drying of your material. When a passive alarm occurs: ◆ The alarm light turns on. ◆ The dryer continues to operate. ◆ Pressing the Push To Read button displays an error code. Alarm The regeneration blower overload has tripped. The blower is drawing excessive current. Possible cause Solution Is the correct voltage supplied to the dryer? Check voltage to and from the transformer.
PASSIVE ALARMS When a passive alarm lights, the dryer has detected a problem that could prevent correct drying of your material. When a passive alarm occurs: ◆ The alarm light turns on. ◆ The dryer continues to operate. Alarm The regeneration temperature is too low. WARNING: Only qualified electrical service personnel should examine and correct problems that require opening the dryer’s electrical enclosure or checking electrical current to diagnose the cause of a problem.
When a passive alarm lights, the dryer has detected a problem that could prevent correct drying of your material. When a passive alarm occurs: ◆ The alarm light turns on. ◆ The dryer continues to operate. Alarm The return air temperature sensor has failed. The regeneration temperature sensor has failed. PASSIVE ALARMS Possible cause Solution Is the return air temperature sensor connected correctly? Verify that the return air temperature sensor wire is connected to the dryer’s microprocessor board.
DRYER WILL NOT POWER UP 6-12 You have a problem with the main power circuit or the dryer’s microprocessor board, if the dryer control panel does not light when the Power ON/OFF switch is turned to the ON position. Symptom Possible cause Solution Turning the Power ON/OFF switch does not turn on the dryer control. Is the main power supply to the dryer on? Verify that the main power supply is on and that the dryer’s main power disconnect dial is in the ON position.
1 2 3 Disconnect power. Open the electrical enclosure door. REPLACING FUSES Check the fuse. If necessary, pull the fuse out and replace it with a fuse of the same type and rating. IMPORTANT: Always refer to the wiring diagrams that came with your dryer to locate specific electrical components. Illustrations in the User Guide are intended to be representative only. Fuse Block 5 L3 1 3 L1 L2 To locate the appropriate fuse and replacement part, refer to the wiring diagrams that came with your dryer.
CHECKING OR REPLACING TEMPERATURE SENSORS The SC dryer uses RTD sensors to monitor the temperatures of the drying air, the return air, the regeneration exhaust and the regeneration and process heater boxes. Regeneration temperature sensor Process (drying air) temperature probe IMPORTANT: Always refer to the wiring diagrams that came with your dryer to locate specific electrical components. Illustrations in the User Guide are intended to be representative only.
1 2 Disconnect power. 3 Check the overload. 5 L3 1 3 L1 L2 10E T1 2 T2 4 T3 6 N.O. 14 B C A D A M R 2 T 1 4 T 2 6 T 3 9 8 B C A D A M R 2 T 1 4 T 2 6 T 3 9 Open the electrical enclosure door. CHECKING MOTOR OVERLOADS If the blue reset button is out, the overload has tripped. Press the button to reset the overload and resume normal operation. If the overload continues to trip, check the overload settings.
ADJUSTING THE LIMIT SWITCH 6-16 TROUBLESHOOTING Carousel cover 1 Stop the dryer. Disconnect and lockout the main power. 2 Remove the carousel cover. 3 Loosen the screw on the limit switch bracket. 4 Slide the bracket left or right to position the limit switch so that its small roller drops into the valley on the bed plate. The roller should not hit the stationary bottom plate. 5 Test for correct indexing of the carousel. 6 Reset the desiccant carousel. Restore main power to the dryer.
Regeneration Heater 1 Disconnect power and remove the dryer’s back panel. 2 Locate the appropriate heater box. 3 Detach the heater element wires from the terminal strip Process Heater 2 REPLACING HEATER ELEMENTS above the heater box. Each element has two wires. 4 3 5 Check continuity of the heater element wires. Replace any element that shows an ohm reading of zero or infinity. 5 6 Remove the heater cover. 7 Remove the heater element assembly. 6 Remove the insulation.
REPLACING DESICCANT TANKS The SC Carousel Dryer has refillable desiccant tanks. When desiccant becomes clogged or contaminated, you should replace the desiccant in all three tanks to ensure optimum performance. 1 Stop the dryer and disconnect power. 2 Remove the carousel cover. 3 Disconnect the hose from the desiccant tank. Loosen the hose clamp with a screw driver. 4 Lift the tank off the 5 Refill the tank with fresh desiccant.
When desiccant becomes clogged or contaminated, you should replace the desiccant in all three tanks to ensure optimum performance. 1 Remove the desiccant tank from the carousel. 2 3 Remove the screws on the tank end plate. REFILLING THE DESICCANT TANK See REPLACING DESICCANT TANKS. Remove the screen cap. Remove the two 1/4-20 nuts from the center post and pull the screen cap out. Strip and stick gasket 1/4-20 bolts Screen cap Fill to the top of the band 4 5 6 Remove the old desiccant.
ADDING AN AFTERCOOLER You can add an aftercooler to the SC Carousel Dryer by ordering the optional aftercooler coils. Installation is easy. The optional aftercooler requires a source of city, tower or chiller water and a discharge or return line. You can use water at temperatures of 70 to 90° F (21° to 32° C). But the water flow should be at least 3 gallons (11.36 liters) per minute. 2 1 Stop the dryer and disconnect power. 2 Remove the aftercooler housing cover.
Conair has made the largest investment in customer support in the plastics industry. Our service experts are available to help with any problem you might have installing and operating your equipment. Your Conair sales representative also can help analyze the nature of your problem, assuring that it did not result from misapplication or improper use.
EQUIPMENT GUARANTEE 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 normal use and service for which it was recommended (except for parts that are typically replaced after normal usage, such as filters, liner plates, etc.). Conair’s guarantee is limited to replacing, at our option, the part or parts determined by us to be defective after examination.
