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Section 9.0 – MAINTENANCE SCHEDULE 

 

The maintenance chart below indicates the components that should be checked while performing routine 
maintenance on the dryer.  The chart also indicates how often a specific check should be done 

 

REFRIGERATED 

 SERIES MAINTENANCE SCHEDULE 

TIME WEEKLY 

MONTHLY 

BI-

ANNUALLY ANNUALLY 

Coalescing Filter Element 

  

  

Check Replace 

Condensing Coil (AC units)  Check/Clean  Check/Clean  Check/Clean Check/Clean 
Condenser (WC units) 

  

  

  

Check/Clean** 

Drain Line Y-Strainer 

Check/Clean  Check/Clean  Check/Clean Check/Clean 

High Pressure Switch 

  

Check Check Check 

 

 

Low Pressure Switch* 

  

Check Check Check 

Fan Control Switches (AC 
units) 

  

Check Check Check 

Compressor Oil Level 

Check   

Check 

Check 

Check 

Drain Solenoid 

  

Check/Clean  Check/Clean Check/Clean 

 

*The low pressure switch may require more frequent adjustments depending on the ambient conditions. 
 

** The condenser should be cleaned only if the unit is running abnormally high discharge pressure.  
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 not 
required, turn the unit off before proceeding. 

 
Upon completion of the maintenance tasks be sure that the machine has been properly 

reassembled prior to restarting and reintroducing air. 
 

 

ROUTINE MAINTENANCE 

 

This section covers the various components that require periodic maintenance and/or replacement.   
 
Coalescing Filter Element 

 
The coalescing filter element should be check Bi-Annually.  On units with the standard control panel, 

check the pressure drop across the unit by using air pressure gauges upstream and downstream of the 
dryer using the closest possible gauges to the dryer.   If it is determined that there is a high pressure 

drop across the machine, remove the filter element from the machine and inspect it.  If the filter is dirty, 

Содержание SC80

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

Страница 2: ...ection 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...

Страница 3: ...ase 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...

Страница 4: ...ure between 50 95 F 10 35 C 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 periodi...

Страница 5: ...zed 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...

Страница 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 Model...

Страница 7: ...c 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...

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

Страница 9: ...s 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 mo...

Страница 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...

Страница 11: ...ter cooled units 13 High Inlet Temp Display Should not be above 100 F High inlet air temp can cause overloading of dryer If lit check compressed air after cooler and or oil cooler on air compressor 12...

Страница 12: ...lay and LED alarm turns on when the dew point is 15 F 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 b...

Страница 13: ...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 perman...

Страница 14: ...ow 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...

Страница 15: ...ant 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...

Страница 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 0 F 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...

Страница 17: ...e 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 th...

Страница 18: ...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 t...

Страница 19: ...ated 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 tim...

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

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

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

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Страница 38: ...om 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 struct...

Страница 39: ......

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