Quincy Compressor QSI Series Instruction Manual page 115

Probable Causes:
Low Air Delivery:
Plugged air intake filter element
Excessive leaks in the service lines
Inlet valve not fully open
Restricted fluid flow
Low Receiver Pressure:
Excessive air demand
Excessive leaks in the service lines
Inlet valve not fully open
Plugged air intake filter
Differential pilot valve not set correctly
Air pressure switch not set correctly
Faulty receiver pressure gauge
Corrective Action:
Adjust air pressure switch to achieve desired
cut-in and cut-out pressure. Ensure unload
pressure does not exceed maximum operating
pressure.
Correct in accordance with instruction on
"Inlet Valve not opening or closing in rela-
tion to air demand" section of this trouble-
shooting guide.
Check control solenoid and blowdown valve.
Clean cooler. Check water system for pos-
sible restrictions, including water temperature
regulating valve. Clean or adjust, if neces-
sary.
Check location of cooler and assure no re-
striction to free circulation of cooling air.
Check cooler fin and clean as necessary.
Add fluid to recommended level. Check fluid
system for leaks.
Replace all panels, ensure all sealing sur-
faces and materials are satisfactory.
Clean cooler, find and correct cause of con-
tamination.
Quincy Compressor-QSI
®
Section IX - Troubleshooting
113