Quincy Compressor QTS Series User Manual

Quincy Compressor QTS Series

50 pages

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This manual contains important safety information and must be

carefully read in its entirety and understood prior to installation

by all personnel who install, operate and/or maintain this product.

On-line product registration, parts ordering and warranty information is available at www.quincycompressor.com

THIS PRODUCT CAN EXPOSE YOU TO CHEMICALS INCLUDING LEAD,

WHICH IS KNOWN TO THE STATE OF CALIFORNIA TO CAUSE CANCER

AND BIRTH DEFECTS OR OTHER REPRODUCTIVE HARM. FOR MORE

INFORMATION GO TO WWW.P65WARNINGS.CA.GOV

Manual No. 2022208700

September 2018 Edition

QT and QTS Series

Compressors

Instruction Manual

Other manuals for Quincy Compressor QTS Series

User Manual20 pages

Questions and Answers:

J
Joel WilliamsAug 13, 2025
Why is the discharge pressure low on my Quincy Compressor Air Compressor?
- T
  Thomas CarterAug 13, 2025
  If your Quincy Compressor Air Compressor experiences low discharge pressure, it might be due to several reasons. First, the compressor could be too small for the application, in which case you should reduce air demand or use a compressor with more air capacity. Second, air leaks could be the culprit; listen for them and apply a soap solution to fittings and connections to identify and tighten or replace the leaking components. Third, a restricted intake air could be the cause; clean or replace the air filter. Fourth, blown gaskets can lead to low pressure, so replace any necessary gaskets. Lastly, broken or misaligned valves can cause this issue; remove the head and inspect, replacing valves if needed.
L
Lindsey StrongAug 17, 2025
Why doesn't my Quincy Compressor Air Compressor tank hold pressure?
- R
  rebeccaorrAug 17, 2025
  If your Quincy Compressor Air Compressor tank does not hold pressure when not running and the shut-off valve is closed, it could be due to a few reasons. A malfunctioning check valve is a common cause, so replace it. Loose fittings or connections can also lead to pressure loss; tighten or replace them. Lastly, inspect the tank for any cracks or pinholes; if found, replace the tank and do not attempt to repair it.
S
scott10Aug 20, 2025
How to fix excessive knocking noise in my Quincy Compressor Air Compressor?
- A
  Adam WattsAug 20, 2025
  If your Quincy Compressor Air Compressor is excessively noisy with a knocking sound, several factors could be the cause. Ensure the drive pulley or flywheel is tightened. Low oil levels can also lead to knocking, so check for proper oil level. It may cause bearing damage. Another cause may be worn connecting rod or connecting rod bearing, which would require replacing the connecting rod and/or connecting rod bearings. Lastly, a noisy check valve can also produce this sound, and you would need to replace the check valve.
L
Logan BrooksAug 25, 2025
What to do if my Quincy Compressor Air Compressor will not run or the motor hums?
- M
  Melissa TaylorAug 26, 2025
  If your Quincy Compressor Air Compressor will not run or the motor hums, begin by checking the voltage with a voltmeter across both legs of incoming power, and check the reset button on the motor. Also, a malfunctioning pressure switch can prevent the compressor from running, so repair or replace the pressure switch. Finally, a malfunctioning check valve may be the issue, so replace the check valve or pressure switch.
B
bsmithAug 28, 2025
Why is there excessive oil carryover in my Quincy Compressor Air Compressor?
- E
  Eric PattersonAug 28, 2025
  Excessive oil carryover in your Quincy Compressor Air Compressor can stem from several issues. Worn piston rings are a common cause, so replace them with new ones. Restricted intake air can also contribute; clean or replace the air filter. Ensure the oil level isn't too high by draining it to the proper level. Finally, using the incorrect oil viscosity can lead to this problem; use a quality non-detergent SAE 40 (ISO 150) oil.
A
Antonio BrownSep 1, 2025
Why is my Quincy Compressor Air Compressor overheating?
- N
  nmurraySep 1, 2025
  If your Quincy Compressor Air Compressor is overheating, consider these potential causes: the compressor might be too small for the application, in which case you should reduce air demand or use a compressor with more air capacity. Another reason may be dirty cooling surfaces, so clean all cooling surfaces of dirt and dust. Finally, improper cooling can lead to overheating; ensure the compressor is installed in an area with adequate cool, dry air.
K
Kimberly BaileySep 4, 2025
How to reduce excessive vibration in my Quincy Compressor Air Compressor?
- D
  David TerrellSep 5, 2025
  Excessive vibration in your Quincy Compressor Air Compressor can be attributed to a few factors. Ensure the unit is mounted on a level surface with vibration pads for proper installation. Loose belts can also cause vibration; replace the belts and align and tighten them properly. Misaligned flywheel or drive pulley can also lead to this issue; align the flywheel and drive pulley.
C
Cindy PatelSep 9, 2025
What causes the pressure switch not unloading on my Quincy Compressor Air Compressor?
- J
  Joy CarrollSep 9, 2025
  If the pressure switch on your Quincy Compressor Air Compressor is not unloading, it is likely malfunctioning. Replace the pressure switch if it does not release air pressure briefly when the unit shuts off.

Quincy Compressor QTS Series Specifications

General

Model	QTS Series
Pump Material	Cast Iron
Horsepower	5-30 HP
Pressure Range	145-175 psi
Drive	Belt Drive
Maximum Pressure	175 psi
Drive Type	Belt
Control Type	Start/Stop

Summary

SECTION 1 SAFETY

Safety First

Explains hazard levels (DANGER, WARNING, CAUTION) and general safety rules.

SECTION 2 SYSTEM DYNAMICS

Description & Application

Overview of QT and QTS series compressors and their capabilities.

Principles of Compression Cycles

Explains single and two-stage compression cycles.

Principles of Lubrication Systems

Explains splash lubrication system operation.

Principles of Cooling Systems

Details how compressors are cooled using fan blades and ambient air.

Principles of Dryers & Filters

Details the function and importance of air dryers and filters.

SECTION 3 INSTALLATION

Receiving Delivery

Procedures for inspecting and handling compressor equipment upon receipt.

Freight Damage

Guidelines for reporting and claiming damages incurred during shipment.

Wiring & Piping Schematics

Diagrams illustrating electrical wiring and pneumatic piping configurations.

Location Requirements

Requirements and considerations for installing the compressor in a suitable location.

Electrical Supply Requirements

Details on proper electrical connections, voltage, and safety codes.

Mounting and System Components

Instructions for mounting the unit and overview of essential system components.

Induction System

Information on air intake systems, filters, and piping requirements.

Compressed Air Discharge System

Guidance on discharge piping, drop legs, and component location for moisture removal.

SECTION 4 START-UP & OPERATION

Pre-starting Checklist

Step-by-step guide to ensure the compressor is ready before connecting power.

Initial Starting & Operating

Procedures for the first startup, break-in period, and initial monitoring.

Daily Starting Checklist

Routine checks to perform before starting the compressor each day.

SECTION 5 MAINTENANCE & LUBRICATION

Stopping for Maintenance

Procedures for safely shutting down the compressor for service.

Maintenance Schedule

Recommended maintenance intervals for optimal performance and lifespan.

Lubrication

Details on checking lubricant levels, types, and specifications.

Pulley / Sheave Alignment & Belt Tension

Guidelines for aligning pulleys, sheaves, and setting belt tension correctly.

Pressure Switch Adjustment

Procedures for adjusting the pressure switch settings.

Pilot Valve Adjustments

Instructions for adjusting pilot valve settings for unload and differential pressure.

SECTION 6 TROUBLESHOOTING

Troubleshooting Common Issues

Lists common problems with their probable causes and solutions.

SECTION 7 REFERENCE INFORMATION

Decal Locations

Identifies the location and purpose of various decals on the compressor unit.

STANDARD TERMS AND CONDITIONS

Warranty and Liability

Outlines warranty coverage, exclusions, limitations of liability, and patent clauses.

Payment, Delivery, and Taxes

Details payment terms, delivery conditions, and tax exclusions.

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