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Gardner Denver LRS55-75F User Manual

Gardner Denver LRS55-75F
56 pages
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L-SERIES FRAME 4
BASE MOUNTED COMPRESSOR
Service Manual
MODELS:
L55-75F
75 & 100 HP
LRS55-75F
55 & 75 kW
13-25-638
Version 03
January 12, 2021

Table of Contents

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Gardner Denver LRS55-75F Specifications

General IconGeneral
ModelLRS55-75F
TypeRotary Screw
Drive TypeDirect Drive
Phase3
Noise Level72 dB(A)

Summary

Safety Regulations and Dangers

General Safety Regulations

General safety rules for operating, setting up, and maintaining the compressor unit.

Dangers Associated with Compressed Air

Hazards related to compressed air, such as pressure, velocity, and connection integrity.

Dangers During Maintenance and Repairs

Hazards from pressurized parts, electric shock, and unexpected startups during servicing.

Dangers from Conversion Work and Modifications

Risks from unauthorized modifications, non-genuine parts, and faulty safety equipment.

Design and Functioning of the Compressor

Preparations for Commissioning

Commissioning Procedures

First Commissioning

Step-by-step guide for the initial startup of the compressor.

Service and Maintenance

Maintenance Recommendations

General advice on performing maintenance work at specified intervals.

Maintenance and Inspection Schedule

Overview of scheduled maintenance tasks and intervals.

Service Check List

Checklist of service tasks for different operating hours.

Oil Change Procedure

Instructions and safety precautions for changing the compressor oil.

Oil Filter Cartridge Replacement

Steps for safely replacing the oil filter cartridge.

Fine Oil Separator Replacement

Procedure for replacing the fine oil separator element.

Trouble-shooting Guide

Unit Cannot Be Started

Possible causes and remedies for the unit failing to start.

Unit Stops During Start-up Phase

Troubleshooting steps for issues occurring during the compressor startup.

Unit Does Not Reach Set Mains Pressure

Diagnosing and fixing problems with reaching the target pressure.

Unit Switches Off Unexpectedly

Identifying causes for unexpected unit shutdowns and their solutions.

Oil in Compressed Air

Troubleshooting steps for oil contamination in the compressed air.

Pressure Relief Valve Opens

Causes and solutions when the pressure relief valve activates.

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