Quincy Compressor QSI 300 User Manual

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
QSI Series
Fixed Speed Rotary Screw Air Compressors
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. 2012203803
August 2018 Edition

Quincy Compressor QSI 300 Specifications

General

Model	QSI 300
Max Pressure	175 PSI
Voltage	460V
Phase	3
Power Source	Electric
Tank Size	N/A (Tankless)
Drive Type	Direct Drive

Summary

Section I - General

Standard Warranty

Details warranty coverage, exclusions, and claim procedures for the compressor.

Safety Alert Symbols

Explains hazard symbols (Danger, Warning, Caution, Notice) used throughout the manual.

Safety Precautions

Section IV - Operating Procedures

Prior to Starting

Essential checks and preparations before initial compressor startup.

Section V - Maintenance or Service Preparation

Important Maintenance Requirements

Outlines crucial safety procedures for preparing the compressor for maintenance.

Section VI - Servicing

Safety

General safety guidelines for service personnel and those around the compressor.

Section VII - Compressor Fluids

Fluid Specifications and Handling

Section VIII - Service Adjustments

Differential Pilot Valve

Pressure Switch

Drive Coupling Alignment

Procedures for checking and correcting coupling alignment between the motor and compressor.

Section IX - Troubleshooting

Failure to Start

Identifies common causes and corrective actions for compressors that fail to start.

Unscheduled Shutdown

Lists potential reasons for unexpected compressor shutdowns and how to resolve them.

Thermal Overload Relays Tripping

Explains why thermal overload relays might trip and how to address the issue.

Low Air Delivery

Discusses causes for reduced air output and methods for troubleshooting.

High Discharge Air Temperature

Addresses issues related to high operating temperatures and their causes.

Frequent Air/Fluid Separator Clogging

Troubleshooting steps for frequent clogging of the air/fluid separator.

Frequent Fluid Filter Clogging

Explains causes and fixes for frequent clogging of the fluid filter.

Inlet Valve Not Opening Or Closing

Addresses problems with the inlet valve's response to air demand.

Compressor Does Not Unload

Solutions for compressors that fail to unload when air demand is zero.

Excessive Water Content In Fluid

Identifies causes for high water content in the compressor fluid.

Section X - Maintenance Schedule

Maintenance Schedule

Provides a schedule for routine maintenance tasks based on time intervals.