Quincy QPNC 200 - User Manual

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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

N
Natalie AustinAug 5, 2025
What to do if my Quincy QPNC 200 motor cuts out on overload?
- E
  Erica MillerAug 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.
R
russellchristopherAug 9, 2025
Why is my Quincy QPNC 200 compressor head so hot?
- N
  Nicholas RiggsAug 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.
D
dgarzaAug 13, 2025
What to do if my Quincy Dehumidifier compressor is very noisy?
- A
  Amy ClarkAug 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.
J
Joseph GarciaAug 18, 2025
What to do if my Quincy Dehumidifier motor hums and does not start?
- A
  Antonio BruceAug 18, 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
Scott LeeAug 22, 2025
What to do if my Quincy QPNC 200 machine stopped and does not restart?
- E
  Evan MarquezAug 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.
A
Amy AtkinsAug 27, 2025
Why is there condensate in the pipings of my Quincy Dehumidifier?
- J
  Jessica VargasAug 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.
R
Robert LangAug 30, 2025
How to fix a Quincy Dehumidifier with no compressed air passing through the outlet?
- L
  Lindsey KelleyAug 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.

Summary

General Information

Safety Messages

Key safety warnings for dryer operation and use.

Safety Zones, Devices, and Decals

Safety Instructions

Critical safety advice for safe dryer usage.

Installation Instructions

Electrical Connection

Safe procedures for connecting the dryer to the electrical power supply.

Compressed Air System Connection

Instructions for connecting the dryer to the compressed air system.

Start-Up and Operation

Preliminary Controls

Essential pre-operation checks before dryer startup.

Starting and Stopping Procedures

Correct procedures for powering the dryer on and off.

Pressure Discharge Procedure

Controls Overview

Dryer Operation

Maintenance

Maintenance Schedule

Troubleshooting Guide

QPNC-75 (115 V) Wiring Diagram

QPNC-75 (230 V) Wiring Diagram

QPNC-100;125 (115 V) Wiring Diagram

QPNC-100;125 (230 V) Wiring Diagram

QPNC-150;175;200;250 Wiring Diagram

Summary

General Information

Safety Messages

Key safety warnings for dryer operation and use.

Safety Zones, Devices, and Decals

Safety Instructions

Critical safety advice for safe dryer usage.

Installation Instructions

Electrical Connection

Safe procedures for connecting the dryer to the electrical power supply.

Compressed Air System Connection

Instructions for connecting the dryer to the compressed air system.

Start-Up and Operation

Preliminary Controls

Essential pre-operation checks before dryer startup.

Starting and Stopping Procedures

Correct procedures for powering the dryer on and off.

Pressure Discharge Procedure

Controls Overview

Dryer Operation

Maintenance

Maintenance Schedule

Troubleshooting Guide

QPNC-75 (115 V) Wiring Diagram

QPNC-75 (230 V) Wiring Diagram

QPNC-100;125 (115 V) Wiring Diagram

QPNC-100;125 (230 V) Wiring Diagram

QPNC-150;175;200;250 Wiring Diagram

Quincy QPNC 200 Specifications

General

Brand	Quincy
Model	QPNC 200
Category	Dehumidifier
Language	English

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