Quincy Compressor HP 15 Manual Use And Maintenance page 38

ENGLISH
19.2 TROUBLE-SHOOTING AND EMERGENCY REMEDIES FOR DRYER
ALL WORK MUST BE CARRIED OUT BY PROFESSIONALLY SKILLED PERSONNEL. BEFORE CARRYNG OUT ANY
MAINTENANCE JOBS IT IS OBLIGATORY TO STOP THE MACHINE AND DISCONNECT IT FROM THE POWER MAINS.
N.B. OPERATIONS MARKED   MUST BE CARRIED OUT BY PROFESSIONALLY SKILLED PERSONNEL APPROVED THE
MANUFACTURER
FAULT FOUND
1) No compressed air passes through the
dryer outlet
2) Presence of condensate in the piping.
3) The compressor head is very hot
(> 55 °C) 131 °F
4) Motor cuts out on overload
5) The motor hums and does not start.
6) The machine has stopped and does not
restart even after a few minutes.
7) The compressor is very noisy.
THIS PART "B" OF THE INSTRUCTIONS MANUAL IS RESERVED FOR PROFESSIONALLY SKILLED PERSONNEL
APPROVED THE MANUFACTURER
WARNING: CAPACITORS INSIDE INVERTER MAY REMAIN CHARGED FOR 15 MINUTES (ONLY FOR VSD) AFTER THE UNIT HAS BEEN
DISCONNECTED FROM MAIN SUPPLY.
WAIT AT LEAST 15 MINUTES (ONLY FOR VSD) AFTER POWER SUPPLY HAS BEEN REMOVED BEFORE PERFOM SERVICE OR REPAIR
TO AVOID DEATH OR SERIOUS INJURY.
38 - Edition 02/2018 Cod. 9828093052 04 -
POSSIBLE CAUSES
1A) The pipes are frozen inside
2A) The condensate separator does not work
correctly
2B) The dryer is working outside its rating
2C) The dryer is working under bad
conditions of condensation
Make reference to 2B
Make reference to 2C
3A) The cooling circuit is not working with the
right gas charge
Make reference to 2B
Make reference to 2C
Make reference to 3A
The line voltage is too low.
You switched the machine off and on
again without leaving enough time for
the pressure balancing.
The starting system of the motor is
defective.
The overload protection with has
intervened: make reference to
2B-2C-3A.
The motor has burnt out.
Troubles with the internal mechanical
parts or with the valves
PART "B"
OBSERVATIONS
 -The bypass valve of the hot gas is
broken or out-of-calibration
-The room temperature is too low and
the evaporators piping are obstructed
with ice
 -Check the draining device by pressing
test button, Ref. 3 Fig. 22
-Check the flow rate of treated air
-Check the room temperature
-Check the air temperature at the drier
inlet.
-Clean the condenser.
 -Check the good operation of the fan.
 -Check if there are leaks of refrigerating
gas.
 - Charge it again.
-Contact the electric power company
-Wait a few minutes before starting the
machine again.
 -Check the running and starting relays
and condensers (if any)