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Airtek Division

 

 

 

 

 
 

 

 
 
 
 
 
 
 

 

 

 

 

 
 
 

 
 
 
 

SMART CYCLE / COLD TRAP 

REFRIGERATED 

AIR DRYERS

 

 
 
 
 

OPERATORS MANUAL:

  

MODELS SC/CT80 — SC/CT3000

 

 
 

SERVICE DEPARTMENT 

1-800-451-6023 

Summary of Contents for CT3000

Page 1: ...Airtek Division SMART CYCLE COLD TRAP REFRIGERATED AIR DRYERS OPERATORS MANUAL MODELS SC CT80 SC CT3000 SERVICE DEPARTMENT 1 800 451 6023 ...

Page 2: ...Section 5 0 SENSORS CONTROLS RELAYS Section 6 0 START UP PROCEDURE Section 6 0 ROUNTINE MAINTENANCE Section 7 0 DIAGNOSTIC CODES Section 8 0 TROUBLE SHOOTING Section 9 0 MAINTENACE SCHEDULE Section 10 0 DRAIN SETTING OPERATION Section 11 0 MAINTENANCE CHARTS Section 12 0 ASSOCIATED DRAWINGS Section 13 0 WARRANTY PRODUCT REGISRATION ...

Page 3: ...kcase Heate r WATTS Crankcase Heater Voltage VOLT Number of Fans Fan Motor Horse Power HP Max Amp Draw AMPS copper THHN Wire Size AWG Fuse Size AMP enter n a if not used Nema Starter Size PART Overload Setting AMPS ater Condenser Max Inlet Temperature ºF ater Condenser Minimum Inlet Pressure PSI Control Transformer VA Rating VA W W Control Transformer Primary Voltage VOLT Control Transformer Prima...

Page 4: ...ure between 50 95ºF 10 35ºC and free from explosive and corrosive fumes Three 3 feet 92cm of space must be allowed between all open grills walls or other objects Where ambient temperatures may periodically fall into the 35 50ºF 1 6 10ºC range dryers are equipped with a low ambient fan control Dryers for below freezing 31º 5ºC ambient temperatures are available with an optional additional refrigera...

Page 5: ...ized when the refrigeration suction gauge reads between 28 to 35 PSI Plumbing the Air Lines The dryers are shipped ready to run All connections are made to the outside of the cabinet Air piping must be supported independently of the dryer Direction of the air flow must be observed for proper installation Fig 1 Use unions or flange joints on inlet and outlet pipe connections Fig 2 If vibration is p...

Page 6: ... a bypass line and gate valve to permit isolation of the dryer from the air system This is done to provide easy service and or removal of the dryer without interruption of air to the system Fig 2 Models 80 300 ...

Page 7: ...ic box cover from inside unit 2 Locate the wires 3 Locate hole on side of box place and tighten connector run wires through connector 4 Using wire connectors connect Black to Hot wire White to Neutral and Green to Ground wire 5 Make sure no bare wire is exposed replace box cover and screw closed Wire the dryer separately from the air compressor The dryer must not cycle with the air compressor Phas...

Page 8: ...Section 4 0 Controls REFRIGERANT DRYER CONTROLLER FEATURES AND OPERATIONS 5 1 4 8 10 2 6 3 7 9 ...

Page 9: ...lues The set point will change once for each time pressed If the button is pressed and held the set point will change one step per second 5 Set Button Toggles between Actual Display mode and Set Point mode During the Set Point Display mode the Raise and Lower keys are used to select new set points which are stored in non volatile memory when the mode is set back to ACTUAL If no keys are pressed wi...

Page 10: ... every 30 minutes independent to the float signal The 30 minute timed intercal setting can be adjusted down to 1 minute or raised up to 60 minutes if desired To adjust the drain Timed Interval setting press the SET Button twice The value displayed will be the timed Interval setting Use the UP or DOWN Arrow to change the set point Press the set button again to return to dew point 10 Drain Open LED ...

Page 11: ...ater cooled units 13 High Inlet Temp Display Should not be above 100ºF High inlet air temp can cause overloading of dryer If lit check compressed air after cooler and or oil cooler on air compressor 12 13 14 11 14 High Coalescer PSID Light Pressure drop across coalescer element should not be above 9 PSIG Excessive pressure drop could cause mechanical failure of element resulting in flood of oil wa...

Page 12: ...elay and LED alarm turns on when the dew point is 15ºF above the set point This is also active during any error conditions Compressor Unloader 1 Relay CU1 FU Panel Only Turns on when the dew point is below the set point 2ºF and turns off when the dew point is above the set point 2ºF Compressor Unloader 1 Relay CU2 FU Panel Only Turns on when the dew point is below the set point 4ºF and turns off w...

Page 13: ...e panel from unit 4 Some units are shipped with the refrigeration service valve tagged These tagged service valves must not be opened until the dryer is ready to be started and the main power is permanently applied Only tagged service valves must be opened 5 Locate tagged service valves and remove end cap from valve stem Fig 3 6 Using a refrigeration service or small crescent wrench turn the valve...

Page 14: ...now introduce compressed air to the dryer 11 Check the automatic drain for proper operation Drain should open at regular intervals based on the drain control settings Clean Y Strainer after the first 8 hours of operation If unit has float Demand drains there is no Y Strainer 12 Restart dryer using this procedure after maintenance power outage or prolonged periods of shutdown When Operating Dryer 1...

Page 15: ...rant charge See tag for correct refrigerant charge Unit needs to be pulled into vacuum 500 micron minimum Unit needs to be pulled into vacuum 500 micron minimum The full charge might not be accepted If this occurs the unit can be started and then the remainder of the charge should be slowly metered into the suction side Suction side is always the inlet to compressor side The full charge might not ...

Page 16: ...tu ua al l d de ew w p po oi in nt t f fa al ll ls s t to o 2 20 0º ºF F o or r l lo ow we er r U Un nl lo oa ad de er r v va al lv ve e f fa ai il li in ng g t to o o op pe en n R Re ep pl la ac ce e E E E E5 5 1 1 A Ac ct tu ua al l d de ew w p po oi in nt t r re ea ad ds s 4 40 0º ºF F h hi ig gh he er r t th ha an n t th he e d de ew w p po oi in nt t s se et t p po oi in nt t 1 1 U Un nl lo o...

Page 17: ...re Contact the factory for verification prior to proceeding with this maintenance item MAINTENANCE PROCEDURES Before performing any maintenance on the machine ensure that air pressure is vented from the system Also make sure that personnel performing the maintenance have read the maintenance section of the manual Some of the maintenance tasks will require the refrigeration system to run but when n...

Page 18: ...d bonnets then need to be removed exposing the tube side of the condenser The tube side should be inspected for any debris and cleaned If soft deposits are found they can be cleaned using a pneumatic tube cleaning gun which forces plugs down the tubes Some have a brush between two rubber plugs and others are specially designed plugs which scrape the tube walls as they travel down the tube If scale...

Page 19: ...cated by the On Time dial Removing and reapplying power will again actuate the timing cycle Second pushing the test button will actuate the valve for as long as the button is pressed Third once the timer is plugged in the timing cycle will begin The valve will be actuated at the interval of time that is indicated by the setting of the knob for the off time To set 1 Fully drain the dryer by opening...

Page 20: ...Section 11 0 MAINTENANCE CHARTS Maintenance Log Date Service Performed Parts Replaced Initials ...

Page 21: ...Section 11 0 MAINTENANCE CHARTS cont Element Replacement Log Part No Date Initials ...

Page 22: ...Section 12 0 ASSOCIATED DRAWINGS ...

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Page 38: ...rom FINAL OPERATION CHECK LIST Inlet air temperature is Inlet PSIG is The dew point temperature controller reads between and Air compressor HP or Max SCFM is Is the dryer a minimum of 3 from any structure on all sides Yes No The Y strainer for drains has been cleaned after first 8 hours of operation Yes No COMMENTS Please indicate a response on a scale of 1 being the lowest to 5 being the highest ...

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