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Atlas Copco LE2

Atlas Copco LE2
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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. This applies in
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 -

Table of Contents

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Atlas Copco LE2 Specifications

General IconGeneral
TypePiston
Stages1
Working Pressure10 bar (145 psi)
Motor Power1.5 kW (2 hp)
Noise Level72 dB(A)
FAD (Free Air Delivery)0.18 m³/min
Free Air Delivery0.18 m³/min
Power Supply230V/50Hz

Summary

Leading Particulars

General Description

Overview of air-cooled, single-acting piston compressors, their types, and working pressures.

Compressor Variants

Details on Compressor Block and Power Pack components for different models.

Air Flow

Describes air flow for specific LE/LF/LT models at different frequencies.

Regulating System

Explains regulating systems for models with DOL and Y/D starters.

Installation and Handling

Dimension Drawings

Provides dimensional drawings for various Power Pack and Base-mounted units.

Installation Proposals: Tank-mounted Units

Guidelines for tank-mounted units with 120 I and 250/475 I receivers.

Installation Proposals: Vertical Receiver Unit

Installation proposal for vertical 250 I receiver tank-mounted units.

Installation Proposals: Silencing Hood Unit

Installation proposal for tank-mounted units with an optional silencing hood.

Installation Proposals: Pack Compressors

Presents installation proposals for pack compressors.

LELFLT Pack Unit Installation

Details installation for LE/LF/LT pack units, including placement and ventilation.

LELFLT Trolley Installation

Covers installation for LE/LF/LT Trolley units, including lifting and placement.

Electrical Connections

Single-phase DOL Starter Diagrams

Electrical diagrams for single-phase LE/LF/LT units with direct-on-line starters.

3-phase DOL Starter Diagrams

Electrical diagrams for 3-phase LE/LF/LT2 units with direct-on-line starters.

3-phase Star-Delta Starter Diagrams

Electrical diagrams for 3-phase LE/LT5/LF5/LT15 models with star-delta starters.

3-phase Star-Delta Starter Diagrams with Transformer

Electrical diagrams for 3-phase LE/LT5/LF5/LT15 units with transformer and star-delta starters.

3-phase Star-Delta Starter and CD Dryer Diagrams

Electrical diagrams for 3-phase units with star-delta starters and CD dryers.

Electrical Diagram Components

Lists and describes components used in the electrical diagrams.

Overload Relay and Fuse Settings

DOL Starter Settings (50 Hz)

Overload relay and fuse settings for DOL starters at 50 Hz.

DOL Starter Settings (60 Hz)

Overload relay and fuse settings for DOL starters at 60 Hz.

Y-D Starter Settings (50 Hz)

Overload relay and fuse settings for Y-D starters at 50 Hz.

Y-D Starter Settings (60 Hz)

Overload relay and fuse settings for Y-D starters at 60 Hz.

Cable Size Recommendations

Recommended cable sizes based on starter type for various compressor models.

Pictographs

Operating Instructions

Safety Precautions

General safety rules to be observed during operation.

Initial Start-up Procedures

Steps for initial start-up of the compressor, including checks and oil filling.

Starting Procedures

Detailed steps for starting LE/LF/LT units and Trolley models.

Stopping Procedures

Instructions for safely stopping LE/LF/LT units and Trolley models.

End of Service Life Procedures

Steps for safely decommissioning a compressor at the end of its service life.

Maintenance

Petrol Engine Maintenance

Refers to the owner's manual for petrol engine maintenance.

Preventive Maintenance Schedule

A schedule detailing maintenance tasks based on running hours or time intervals.

Lubrication Recommendations

Recommends using Atlas Copco approved PAO oil for LE/LT compressors.

Service Kits

Information on available service kits for parts like air filters, unloaders, and check valves.

Service Kits for Valve Discs

Lists service kits for replacing valve discs for various LE/LF/LT models.

Servicing and Adjustment Procedures

Unloader or Check Valve Servicing

Recommends replacing unloader or check valves, and considerations for dirt and condensate.

Valve Replacement

Instructions for replacing faulty valves and recommended replacement of valve discs and seals.

Valve Disc Replacement Procedures

Detailed steps for replacing valve discs on various cylinder sides, including parts list.

Valve Disc Replacement Sequence

Step-by-step sequence for replacing valve discs on different compressor cylinder types.

Air Filter Servicing

Pressure Switch Adjustment (MDR4 S)

MDR4 S Pressure Difference Diagrams

Illustrates pressure difference diagrams for MDR4S switches, showing stopping vs. starting pressure.

Pressure Switch Adjustment (MDR3)

Pilot Valve Adjustment (Trolley)

Safety and Relief Valve Testing

Problem Solving

Troubleshooting Common Issues

Continues troubleshooting guide for issues like unit not starting, overload relay trips, and high oil consumption.

Principal Data

Reference Conditions and Limitations

Specifies reference conditions and operational limitations for compressors.

LE Compressor Data (60 Hz)

Detailed compressor data for LE series at 60 Hz, including sound pressure levels.

Compressor Data (LF 10 bar)

Compressor Data (LT 15 bar)

Compressor Data (LT 20 bar)

Compressor Data (LT 30 bar)

Unit Conversion and PED Compliance

SI to USBritish Unit Conversion

Provides conversion factors for common units.

Pressure Equipment Directive (PED) Compliance

Details components subject to the PED and overall rating conformity.

Ownership Data

General Safety Precautions

Operation Safety

Safety directives specific to operating the compressor, including hose use and air quality.

Maintenance Safety

Safety precautions to be followed during maintenance and repair work.

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