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Section IX - Troubleshooting
Probable Causes:
Corrective Action:
Quincy Compressor
®
- QSD™ 75
CHECK AND TIGHTEN WIRING TERMINALS.
REPAIR OR REPLACE AS NECESSARY.
REPAIR OR REPLACE AS NECESSARY.
CHECK AND REPLACE TIMER.
REPAIR OR REPLACE AS NECESSARY.
NO AIR SHOULD BE BLOWING OUT FROM THE MUFFLERS DURING
LOADED
OPERATION.
CHECK AND RESET SEQUENCE OR SCHEDULE AS NECESSARY.
CHECK AND REPAIR ANY LEAKS.
CHECK PLANT AIR DISTRIBUTION SYSTEM FOR LEAKS.
ADD MORE STORAGE CAPACITY AS CLOSE TO THE COMPRESSOR
AS
POSSIBLE.
REPAIR OR REPLACE AS NECESSARY.
REPAIR OR REPLACE AS NECESSARY.
REPLACE AS NECESSARY.
CHECK AND REPAIR ANY LEAKS.
DRAIN LINES, REPLACE AS NECESSARY.
REPLACE AS NECESSARY.
ADD STORAGE CAPACITY (MINIMUM OF THREE GALLONS PER
CFM).
Compressor does not revert to Load when Service Line Pressure Drops to Reset Pressure:
LOOSE WIRING CONNECTION
FAULTY PRESSURE SENSOR
FAULTY SOLENOID
FAULTY TIMER
FAULTY LIFT VALVE(S)
FAULTY BLOWDOWN VALVE(S)
NETWORK OUT OF SEQUENCE OR
SCHEDULE
Compressor Will not Time out or Shut down when Unloaded (Auto Dual Only):
LEAKS IN CONTROL LINES
LEAKS IN SERVICE LINES
STORAGE CAPACITY TOO SMALL
LEAKS
IN MINIMUM PRESSURE CHECK
VALVE
FAULTY AIR PRESSURE SWITCH
FAULTY AIR PRESSURE SENSORS
Too Rapid Cycling Between Load and Unload:
LEAKS IN CONTROL LINES
WATER OR ICE IN CONTROL LINES
FAULTY AIR PRESSURE SENSORS
STORAGE CAPACITY TOO SMALL