Cat Electric Rope Shovel QSB Series Rotary Screw Belt Drive Air Compressor Instruction Manual – PDF DOWNLOAD

Description

Cat Electric Rope Shovel QSB Series Rotary Screw Belt Drive Air Compressor Instruction Manual – PDF DOWNLOAD

FILE DETAILS:

Cat Electric Rope Shovel QSB Series Rotary Screw Belt Drive Air Compressor Instruction Manual – PDF DOWNLOAD

Language : English
Pages :88
Downloadable : Yes
File Type : PDF

DESCRIPTION:

Cat Electric Rope Shovel QSB Series Rotary Screw Belt Drive Air Compressor Instruction Manual – PDF DOWNLOAD

General Description

The QSB/T™ line of rotary screw compressors covers a horsepower range of 15 to 50. These belt driven compressors have standard full load pressure ratings of 100, 125 and 150 PSIG. The large, 127mm rotors allow Quincy to operate these compressors at lower speeds than competitive makes. While base mounting is standard, 120 and 200 gallon tank mounting is available. The compressor is a single stage, positive displacement, fluid-flooded rotary screw type unit, consisting of two precision-machined rotors. The drive rotor is driven through a v-belt arrangement. All components are attached to a heavy-duty steel frame. Controls and indicators are arranged on a control panel. Acoustical cabinets are available to reduce sound levels

The Compression Cycle

The compression cycle of a rotary screw compressor is a continuous process from intake to discharge with no reciprocating mechanisms starting and stopping as found in reciprocating compressors. The compressor consists of two rotors in constant mesh, housed in a cylinder with two parallel adjoining bores. The male drive rotor has four lobes that mesh with six flutes in the female rotor. All parts are machined to exacting tolerances. As the rotors rotate, (male-clockwise as viewed from the power input end) air is drawn into the cylinder through the inlet port located at the power input end. A volume of air is trapped as the rotor lobes pass the inlet cut off points in the cylinders. Compression occurs as the male rotor rolls into the female flute, progressively reducing the space thereby raising the pressure. Compression continues until the lobe and flute pass the discharge port. The compressed air is then discharged into the air/fluid reservoir. There are four complete compression cycles for each complete rotation of the male rotor

TABLE OF CONTENTS:

Cat Electric Rope Shovel QSB Series Rotary Screw Belt Drive Air Compressor Instruction Manual – PDF DOWNLOAD

Section I – General
Standard Warranty 1
Safety Alert Symbols 2
Safety Precautions 3
Spare Parts Ordering Information 4
Serial/Model Identification Plate 4
Model Identification 5
Section II – Description
General Description 6
The Compression Cycle 6
Air Flow 7
Cooling System 7
Capacity Control System 8-9
Electrical System 10
Indicators 11
Gauges 11
Section III – Installation
Receiving 12
Moving the Unit to the Installation Site 12
Location 13
Piping Connections 14
Relief Valves 14
Pressure Vessels 14
Electrical 15
Guards 15
Manual Vent and Shutoff Valves 15
Water and Sewer Facilities at the Installation Site 16
Compressor Rotation 16
Fan Rotation 16
Section IV – Operating Procedures
Prior To Starting 18
Starting the Compressor 18
Stopping the Compressor – Normal Operation 19
Stopping the Compressor – Emergency Operation 19
Electronic Control Operation (optional) 19-21
Section V – Maintenance or Service Preparation
Maintenance or Service Preparation 22
BI619722
Table of Contents
Quincy Compressor® – QSB/T™
Section VI – Servicing
Safety 24
Water Removal 24
Air/Fluid Separator Element 25
Air Filter 25
Control Line Filter 25
Shaft Seal 26-27
Differential Pilot Valve 28
Pressure Switch 28
Water Temperature Regulating Valve (Water-cooled Units Only) 28
V-belt Drive Maintenance 28-31
Belt Replacement/Tension Adjustment 32-33
Electronic Control (optional) 34
Air and Fluid Tubing 34
O-ring Fittings 35
Section VII – Compressor Fluids
Fluid Specifications 36
Lubrication 37
Fluid Level 37
Fluid Filter 38
Factors Affecting Fluid Life 38
Fluid Analysis Program – General 39
QuinSyn PG 40
QuinSyn XP 41
QuinSyn Plus 42
QuinSyn Fluids 43
QuinSyn Flush 44
Cleaning and Flushing With QuinSyn Flush 45
Converting to QuinSyn PG 46
Converting to QuinSyn XP 47
Converting to QuinSyn Plus 47
Converting to QuinSyn 48
Sampling Procedures 49
Analysis Report (sample) 50
Understanding the Analysis Report 51
Fluid Parameters 52-53
Section VIII- Troubleshooting
Troubleshooting 54-65
Section IX – Maintenance Schedule
Maintenance Schedule 66
Appendix A – Dimensional Drawings
Dimensional Drawings 68-73
Appendix B – Technical Data
Technical Data 74-79

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