Table of Contents
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Instruction book
Atlas Copco Stationary Air Compressors
LE2, -3, -5, -7, -10, -15, -20
LT2, -3, -5, -7, -10 (50 Hz)
LT15/60, -15-30, -15, -20, -20-30
LF2, -3, -5, -7, -10
Instruction book
Copyright 2004, Atlas Copco Airpower n.v., Antwerp, Belgium.
Any unauthorized use or copying of the contents or any part thereof is prohibited.
particular to trademarks, model denominations, part numbers and drawings.
This instruction book meets the requirements for instructions specified by the machinery directive
98/37/EC and is valid for CE as well as non-CE labelled machines.
No. 2920 1585 00
Registration code: APC L / 38 / 985
2004-07
2920 1585 00
- 1 -
This applies in
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Table of Contents
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Summarization of Contents
Leading Particulars
1.1 General Description
Describes the types of compressors and their basic configurations.
1.2 Air Flow
Details the airflow path through different compressor models.
1.3 Regulating System
Explains how the compressor pressure is regulated.
Installation and Handling
2.1 Dimension Drawings
Provides dimensional specifications for various compressor models.
2.2 Installation Proposals
Offers guidelines and diagrams for compressor installation.
2.3 Electrical Connections
Details the electrical wiring and connections for the compressors.
2.4 Settings of Overload Relay, Fuses, and Cable Size
Specifies settings for overload relays, fuses, and cable sizing.
2.5 Pictographs
Explains the meaning of various pictographs used in the manual.
Operating Instructions
3.1 Initial Start-up
Guides the user through the initial setup and first start of the compressor.
3.2 Starting
Provides instructions on how to start the compressor.
3.3 Stopping
Details the procedure for safely stopping the compressor.
3.4 Taking Out of Operation at End of Service Life
Instructions for decommissioning the compressor at the end of its lifespan.
Maintenance
4.1 Petrol Engine Maintenance
Maintenance procedures specific to petrol engines.
4.2 Preventive Maintenance Schedule
Outlines scheduled maintenance tasks and intervals for the compressor.
4.3 Lubrication of LE/LT Compressors
Recommendations for lubricating LE/LT compressors with specific oils.
4.4 Service Kits
Information on available service kits for compressor maintenance.
Servicing and Adjustment Procedures
5.1 Unloader or Check Valve
Procedures for servicing or replacing the unloader or check valve.
5.2 Valves
Information on identifying and replacing faulty valves.
5.2.1 Replacement of Valve Discs
Detailed steps for replacing valve discs in compressor cylinders.
5.3 Air Filter
Instructions for cleaning and replacing the air filter element.
5.4 Adjustment of MDR4S Pressure Switch
Guides adjustment of the MDR4S pressure switch for optimal operation.
5.5 Adjustment of MDR3 Pressure Switch
Details how to adjust the MDR3 pressure switch settings.
5.6 Adjustment of Pilot Valve on Trolley
Explains how to adjust the pilot valve on Trolley models.
5.7 Safety Valve
Procedures for testing and replacing the safety valve.
5.8 Relief Valve
Instructions for testing and replacing the relief valve.
Problem Solving
6.1 Insufficient Air Pressure
Troubleshooting steps for low air pressure issues.
6.2 Unit Does Not Speed Up
Diagnosing and resolving issues with unit speed.
6.3 Air Receiver Pressure Above Maximum
Troubleshooting steps when receiver pressure exceeds maximum.
6.4 Relief Valve Blows
Steps to take if the relief valve is activated.
6.5 Receiver Does Not Hold Pressure
Troubleshooting steps for pressure loss in the receiver.
6.6 Frequent Starting/Short Periods
Troubleshooting steps for frequent compressor starts.
6.7 High Oil Consumption on LE/LT
Addresses issues related to high oil consumption in LE/LT compressors.
6.8 Unit Does Not Start
Troubleshooting steps for when the unit fails to start.
6.9 Overload Relay Cuts Out
Troubleshooting steps for overload relay tripping.
Principal Data
7.1 Reference Conditions
Specifies reference conditions for compressor performance data.
7.2 Limitations
Lists operational limitations for the compressors.
7.3 Compressor Data for LE 10 bar
Performance data for LE 10 bar compressors.
7.3.1 50 Hz
Performance data for LE 10 bar compressors at 50 Hz.
7.4 Compressor Data for LF 10 bar
Performance data for LF 10 bar compressors.
7.4.1 50 Hz
Performance data for LF 10 bar compressors at 50 Hz.
7.5 Compressor Data for LT 15 bar
Performance data for LT 15 bar compressors.
7.5.1 50 Hz
Performance data for LT 15 bar compressors at 50 Hz.
7.6 Compressor Data for LT 20 bar
Performance data for LT 20 bar compressors.
7.6.1 50 Hz
Performance data for LT 20 bar compressors at 50 Hz.
7.7 Compressor Data for LT 30 bar
Performance data for LT 30 bar compressors.
7.7.1 50 Hz
Performance data for LT 30 bar compressors at 50 Hz.
PED (Pressure Equipment Directive)
9.1 Components Subject to PED
Lists components subject to the PED.
9.2 Overall Rating
States the overall rating of compressors regarding PED.
Safety Precautions
Installation
General and specific directives for compressor installation.
Operation
Safe operating practices and precautions for using the compressor.
Maintenance
Safety guidelines for performing maintenance and repair work.
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