Quincy QPNC 75 - User Manual

Questions and Answers

J
Joseph CruzAug 5, 2025
What to do if my Quincy QPNC 75 motor cuts out on overload?
- H
  hollywoodwardAug 5, 2025
  If the motor cuts out on overload, it could be due to several reasons. First, the dryer might be operating outside of its specified range; in this case, verify the treated air's flow rate. Secondly, the dryer might be working under unfavorable conditions for an air-cooled condenser; make sure to clean the condenser. Finally, the cooling circuit could be malfunctioning due to an incorrect refrigerant charge; check for any refrigerant gas leaks.
S
sandra31Aug 9, 2025
Why is my Quincy QPNC 75 compressor head so hot?
- M
  Mathew JonesAug 9, 2025
  If the compressor head is very hot, exceeding 131 °F (55 °C), it could be due to a few reasons. The dryer might be operating outside its rated capacity, so check the flow rate of the treated air. Additionally, the dryer may be working under poor conditions for the air-cooled condenser, so you should clean the condenser. It's also possible that the cooling circuit isn't working correctly due to an incorrect refrigerant charge, in which case you should check for leaks of refrigerating gas.
L
lowepamelaAug 13, 2025
What to do if my Quincy QPNC 75 Dehumidifier compressor is very noisy?
- C
  Christopher WashingtonAug 13, 2025
  If the compressor is very noisy, it indicates trouble with the internal mechanical parts or with the valves. You should consider repairing or replacing the affected components.
C
Crystal CarterAug 17, 2025
What to do if my Quincy QPNC 75 Dehumidifier motor hums and does not start?
- K
  Kristy CallahanAug 17, 2025
  If the motor hums but doesn't start, it could be due to several reasons. First, the line voltage might be too low, in which case you should contact the electric power company. Second, the machine may have been switched off and on again too quickly, without allowing enough time for pressure balancing; wait a few minutes before restarting it. Lastly, the motor's starting system could be defective; check the running and starting relays and condensers, if installed.
S
Sarah JonesAug 22, 2025
What to do if my Quincy Dehumidifier machine stopped and does not restart?
- C
  Christopher FergusonAug 22, 2025
  If the machine (compressor) has stopped and won't restart, it could be due to overload protection or a burned-out compressor motor. In the first case, refer to sections B2, B3, and C3 for remedies. In the second case, replace the compressor.
N
Natalie BennettAug 27, 2025
Why is there condensate in the pipings of my Quincy QPNC 75?
- S
  Stephen ButlerAug 27, 2025
  The presence of condensate in the pipings may be due to several factors. The condensate separator might not be working correctly; in this case, clean the condensate drain filter. The dryer could be operating outside its specified range; check the flow rate of treated air. Also, the dryer might be working under bad conditions for the air-cooled condenser; make sure to clean the condenser.
J
Jessica PenaAug 31, 2025
How to fix a Quincy QPNC 75 with no compressed air passing through the outlet?
- S
  Scott GonzalesAug 31, 2025
  If no compressed air passes through the dryer outlet, the pipes may be frozen inside. This could be because the hot gas bypass valve is broken or out of calibration, or because the room temperature is too low, causing the evaporator's piping to be obstructed with ice.