Atlas Copco LE7

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 -

Atlas Copco LE7 Specifications

General

Brand	Atlas Copco
Model	LE7
Category	Air Compressor
Language	English

Summary

1 Leading Particulars

1.1 General Description

Overview of air-cooled, single-acting piston compressors, including types, stages, and cylinder counts.

1.2 Air Flow

1.3 Regulating System

Details the operational logic of the pressure regulating system for different compressor types and starters.

2 Installation and Handling

2.3 Electrical Connections

Covers electrical installation requirements, wiring diagrams for DOL and Star-Delta starters.

3 Operating Instructions

3.1 Initial Start-up

Instructions for the first startup, including checks, oil fill, and rotation direction.

3.2 Starting

Step-by-step guide for starting different compressor types, including trolley units.

3.3 Stopping

Procedures for safely stopping the compressor, including safety switch actions.

4 Maintenance

4.2 Preventive Maintenance Schedule

Outlines routine maintenance tasks, intervals, and corresponding sections for compressor care.

4.3 Lubrication

5 Servicing and Adjustment Procedures

5.2 Valves

5.4 Pressure Switch Adjustment (MDR4 S)

Guides on adjusting stopping pressure and pressure difference on MDR4S pressure switches.

5.5 Pressure Switch Adjustment (MDR3)

5.6 Pilot Valve Adjustment (Trolley)

5.7 Safety Valve Testing

6 Problem Solving

Troubleshooting Guide

Lists common compressor issues like low air pressure, unit not speeding up, and their potential causes and solutions.

7 Principal Data

7.3 LE Compressor Data

7.4 LF Compressor Data

7.5 LT Compressor Data (15 bar)

7.6 LT Compressor Data (20 bar)

7.7 LT Compressor Data (30 bar)