Quincy QPNC Series User Manual

Quincy QPNC Series

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QPNC Series (75-250)

Non-Cycling

Parts/Instruction Manual

This manual contains important safety information and should be made available to

all personnel who operate and/or maintain this product. Carefully read this manual

before attempting to operate or perform maintenance on this equipment.

Manual No. 65504-2A

January 2007 Edition

Update: May 2009

Questions and Answers:

M
Mark SkinnerJul 27, 2025
What to do if my Quincy QPNC Dehumidifier motor cuts out on overload?
- T
  Tammy DurhamJul 27, 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.
R
Rebecca SuttonJul 31, 2025
Why is my Quincy Dehumidifier compressor head so hot?
- B
  benitezchristopherJul 31, 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.
E
elizabeth55Aug 4, 2025
What to do if my Quincy QPNC compressor is very noisy?
- H
  Haley NealAug 4, 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.
J
Johnathan RodriguezAug 9, 2025
What to do if my Quincy Dehumidifier motor hums and does not start?
- S
  stephanie93Aug 9, 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.

Quincy QPNC Series Specifications

General

Series	QPNC
Category	Dehumidifier
Dimensions (H x W x D)	Varies by model
Weight	Varies by model
Capacity Range	30-300 PPD
Voltage Options	460V
Airflow (CFM)	Refer to individual model specifications
Moisture Removal (PPH)	30-300 PPD

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