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REFRIGERATED AIR DRYER SERVICE CHECKLIST
Please get answers to as many questions as you can before writing or calling for service.
1. Customer’s Name ______________________________________________________________________________
Phone no. ________________________________ Fax no. ____________________________________________
2. Model no. ________________________________ Serial no. __________________________________________
Voltage L1 _____________ L2 _______________ L3 ______________ PH _____________ HZ ______________
Amp draw L1 ________________________ L2 _________________________ L3 _________________________
Actual air flow (SCFM) _________________________ HP ____________________________________________
3. Description of problem
_____________________________________________________________________________________________
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_____________________________________________________________________________________________
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_____________________________________________________________________________________________
_____________________________________________________________________________________________
_____________________________________________________________________________________________
_____________________________________________________________________________________________
4. Air in temperature (°F) ___________________________________________________________________________
5. Air out temperature (°F) _________________________________________________________________________
6. Air in pressure (PSIG) ___________________________________________________________________________
7. Air out pressure (PSIG) __________________________________________________________________________
8. Refrigerant suction pressure when unit is operating (PSIG) ______________________________________________
9. Refrigerant suction pressure when unit is not operating (PSIG) ___________________________________________
10. Refrigerant discharge pressure when unit is operating (PSIG) ____________________________________________
11. Inspect refrigerant suction line at the outlet of air to refrigerant heat exchanger:
Cold _______________________ Hot _______________________ Temperature (°F) _______________________
12. Inspect refrigerant suction line at inlet of compressor: Temperature (°F) ____________________________________
13. Oil pressure when unit is operating (PSIG) ___________________________________________________________
14. Separator skin temperature (°F) ___________________________________________________________________
15. Location of unit: Indoor ___________________________ Outdoor ________________________________
Clean ___________________________ Dusty __________________________________
16. Ambient temperature (°F) _________________ Air-cooled condenser clean? Yes ___________ No ____________
17. a. Water-cooled condenser: City ____________________________ Tower ________________________________
b. Inlet water temperature (°F) _______________________ Outlet water temperature (°F) ____________________
c. Inlet water pressure (PSIG) ________________________ Outlet water pressure (PSIG) ____________________
18. Inspect auto drain, operation: Stuck open ________________________ Stuck closed ________________________
NOTE: Maintenance Personnel, Copy This Page, Fill In Form and Fax to 262-658-1945
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