Table of Contents
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A-Z COPM
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QSI-90/120/140
& QGV-20/25/30
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.
Direct Drive Air Compressors
Instruction Manual
Manual No.
December 2012 Edition
2012200011
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Table of Contents
Troubleshooting
Related Manuals for Quincy QSI-120
Summarization of Contents
Section I - General Information
Safety Alert Symbols
Explains hazard symbols used throughout the manual for safety warnings.
Safety Precautions
Lists essential safety rules to follow before operating or servicing the compressor.
Spare Parts Ordering Information
Guidance on how to order replacement parts and accessories.
Serial/Model Identification Plate
Information on locating and using the serial and model number.
Section II - Description
General Description
Overview of QSI rotary screw compressors, their range, and features.
The Compression Cycle
Explains the mechanical process of air compression in rotary screw compressors.
Air Flow
Describes the path of air from intake through the compressor to the outlet.
Cooling System
Details the air-cooled fluid coolers and aftercoolers used for system cooling.
Capacity Control System
Explains how the compressor regulates its output based on air demand.
Controller Options
Discusses the available electronic and standard control systems.
Standard Control Lights, Indicators & Gauges
Identifies and explains the function of control panel instruments and indicators.
Operating Modes
Describes the Load/No Load operating mode and its requirements.
Electrical System
Covers power supply, voltage, wiring, and enclosure details for safe operation.
Section III - Installation
Receiving
Procedures for inspecting the compressor upon delivery for any shipping damage.
Moving the Unit to the Installation Site
Guidelines for safely lifting and transporting the compressor unit.
Location
Criteria for selecting an appropriate and safe installation site for the compressor.
Shipping Supports
Instructions for removing shipping supports before operating the unit.
Piping Connections
Best practices and materials for connecting air and fluid piping systems.
Pressure Vessels
Requirements for air receiver tanks and ASME compliance.
Relief Valves
Critical safety information regarding the installation and function of relief valves.
Electrical
Guidelines for safe electrical installation, grounding, and compliance with codes.
Pneumatic Circuit Breakers or Velocity Fuses
Safety devices designed to prevent hose whipping hazards.
Guards
Importance of mechanical guards for safety during operation and maintenance.
Manual Vent and Shutoff Valve
Proper installation and use of manual valves for safety and isolation.
Compressor Rotation
Procedure for checking and ensuring correct compressor rotation to prevent damage.
Fan Rotation
How to check fan rotation for proper cooling system operation.
Section IV - Operating Procedures
Prior to Starting
Essential checks and manual review before initial compressor startup.
Starting the Compressor
Step-by-step guide for safely starting the compressor and monitoring its operation.
Stopping the Compressor
Procedures for normal and emergency shutdown of the compressor.
HMI Control Panel Operation
Comprehensive guide to the Human-Machine Interface, including displays, menus, alarms, and configuration settings.
Appendix A - Dimensional Drawings
QSI Series Dimensional Drawings
Detailed drawings for QSI models, covering various configurations.
QGV Series Dimensional Drawings
Detailed drawings for QGV models, covering various configurations.
Appendix B - Technical Data
QSI Series Technical Data
Performance and specifications for QSI compressor models.
QGV Series Technical Data
Performance and specifications for QGV compressor models.
Section VII - Troubleshooting
Failure to Start
Common reasons and solutions for the compressor failing to start.
Unscheduled Shutdown
Diagnosing and resolving unexpected compressor shutdowns.
High Discharge Air Temperature and/or High Fluid Injection Temperature
Troubleshooting steps for elevated operating temperatures.
Frequent Air/Fluid Separator Clogging
Identifying causes and solutions for frequent clogging of the air/fluid separator.
Excessive Fluid Consumption
Investigating and addressing high compressor fluid usage.
Frequent Air Cleaner Clogging
Diagnosing and resolving issues with the air intake filter clogging.
Compressor Does Not Unload When There Is No Air Demand
Troubleshooting why the compressor fails to unload during low demand.
Excessive Water Content in Fluid
Identifying and resolving issues related to water contamination in compressor fluid.
Section VI - Compressor Fluids
Fluid Specifications
Recommended synthetic fluids for Quincy compressors and their properties.
Lubrication
How fluid circulates and lubricates the compressor.
Fluid Level
Procedures for monitoring, checking, and maintaining the correct fluid level.
Fluid Filter
Guidelines for fluid filter replacement, maintenance, and indicators.
Factors Affecting Fluid Life
How operating conditions and contaminants impact the longevity of compressor fluids.
Fluid Analysis Program - General
An overview of the fluid analysis service and its importance for maintenance.
QuinSyn Plus
Details on QuinSyn Plus fluid, including properties, applications, and disposal.
QuinSyn PG
Details on QuinSyn PG fluid, including properties, applications, and disposal.
QuinSyn XP
Details on QuinSyn XP fluid, including properties, applications, and disposal.
Sampling Procedures
Instructions on how to collect and submit fluid samples for analysis.
Understanding the Analysis Report
Guidance on interpreting the results of compressor fluid analysis reports.
Fluid Parameters
Tables detailing fluid properties and acceptable/unacceptable ranges.
STANDARD TERMS AND CONDITIONS
LEGAL EFFECT
States that the terms and conditions form part of the order and supersede other agreements.
TERMS OF PAYMENT
Outlines payment terms, due dates, and consequences of late payments.
STANDARD WARRANTY
Details the warranty coverage, limitations, and claim procedures for the equipment.
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