Quincy Compressor QSD 65040-AB Instruction Manual page 77

Probable Causes:
Compressor does not revert to Load when Service Line Pressure Drops to Reset Pressure:
L
OOSE WIRING CONNECTION
F
AULTY PRESSURE SENSOR
F
AULTY SOLENOID
F
AULTY TIMER
F ( )
AULTY LIFT VALVE S
F
AULTY BLOWDOWN VALVE
N
ETWORK OUT OF SEQUENCE OR
SCHEDULE
Compressor Will not Time out or Shut down when Unloaded (Auto Dual Only):
L
EAKS IN CONTROL LINES
L
EAKS IN SERVICE LINES
S
TORAGE CAPACITY TOO SMALL
LEAKS IN MINIMUM PRESSURE CHECK
VALVE
F
AULTY AIR PRESSURE SWITCH
F
AULTY AIR PRESSURE SENSORS
Too Rapid Cycling Between Load and Unload:
L
EAKS IN CONTROL LINES
W
ATER OR ICE IN CONTROL LINES
F
AULTY AIR PRESSURE SENSORS
S
TORAGE CAPACITY TOO SMALL
Corrective Action:
C
HECK AND TIGHTEN WIRING TERMINALS
R
EPAIR OR REPLACE AS NECESSARY
R
EPAIR OR REPLACE AS NECESSARY
C
HECK AND REPLACE TIMER
R
EPAIR OR REPLACE AS NECESSARY
( )
N
S O AIR SHOULD BE BLOWING OUT FROM THE MUFFLERS DURING
LOADED OPERATION
C
HECK AND RESET SEQUENCE OR SCHEDULE AS NECESSARY
C
HECK AND REPAIR ANY LEAKS
C
HECK PLANT AIR DISTRIBUTION SYSTEM FOR LEAKS
A
DD MORE STORAGE CAPACITY AS CLOSE TO THE COMPRESSOR
AS POSSIBLE
R
EPAIR OR REPLACE AS NECESSARY
R
EPAIR OR REPLACE AS NECESSARY
R
EPLACE AS NECESSARY
C
HECK AND REPAIR ANY LEAKS
D
RAIN LINES
R
EPLACE AS NECESSARY
A
DD STORAGE CAPACITY
CFM).
Quincy Compressor
Section IX - Troubleshooting
.
.
.
.
.
.
.
.
.
.
.
,
REPLACE AS NECESSARY
.
(
MINIMUM OF THREE GALLONS PER
®
- QSD™
.
.
.
.
75