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Gardner Denver L55-75F User Manual

Gardner Denver L55-75F
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 L55-75F Specifications

General IconGeneral
BrandGardner Denver
ModelL55-75F
CategoryAir Compressor
LanguageEnglish

Summary

General Information and Warranty

Maintenance Procedures

Ensures continued trouble-free operation through periodic maintenance and servicing.

Safety Symbol Definitions

DANGER Hazard Level

Defines DANGER as high risk, potentially leading to death or serious injury.

Electric Shock Hazard

Warning symbol for electric shock hazard.

Hazard Indicator Levels

WARNING Hazard Level

Defines WARNING as medium risk, potentially leading to death or serious injury.

Prohibition and Mandatory Actions

Warranty Exclusions and Safety Regulations

Safety Regulations Compliance

Stresses adherence to safety regulations in Section 4.

General Safety Regulations

Danger Awareness

Highlights dangers not immediately apparent and the need for manual understanding.

Malfunction Safety

Procedures for handling malfunctions and unauthorized modifications.

Dangers Associated with Compressed Air

Compressed Air Power

Warns about the power of compressed air and associated risks.

Dangers from Compression and Air Intake

High Temperature and Explosion Risk

Addresses risks from high temperatures and drawn-in materials.

Machine-Related Dangers

Electric Shock Risk

Emphasizes correct electrical connections and power supply for safety.

Dangers During Loading and Moving

Lifting Safety

Guidelines for safe lifting operations and avoiding accidents.

General Workplace Dangers

Maintenance Neglect Dangers

Risks associated with neglecting component safety and line maintenance.

Dangers During Maintenance and Repairs

Pressurized Parts Removal

Emphasizes that only trained technicians should maintain pressurized parts.

Electric Shock and Unexpected Start-up

Safety measures for electric shock and unexpected machine start-up.

Maintenance Safety Precautions

Safety-Important Part Damage

Precautions against damaging safety-critical parts during maintenance.

Dangers from Conversion Work and Modifications

Genuine Parts Importance

Stresses the design of genuine parts and risks of unauthorized modifications.

System Control - Operation Modes

System Control - Operational States

Transport Instructions

Lifting and Securing Precautions

Safety measures for lifting, securing parts, and using fork lifts.

Installation Guidelines

Compressed-Air Connection

Connection Safety

Warns about defective connections and hose whip hazards.

Electrical Connection (USA/CANADA)

Power Supply and Wiring

Requirements for industrial equipment power supply and qualified electrician.

Charged Capacitor Safety

Safety measures for L55RS-L75RS regarding charged capacitors.

Checking the Oil Level

Oil Level Safety Precautions

Dangers of air/oil under pressure and lockout/tagout procedures.

First Commissioning Procedure

Pre-Commissioning Checks

Checks for transport guards, oil level, fan switch, and electrical terminals.

Motor Rotation Direction Check

How to check the drive motor and fan rotation direction.

Commissioning Diagrams and Notes

Compressor Controller Operations

Routine Commissioning Steps

Procedures for routine commissioning including checks and start-up.

Malfunction and Emergency Procedures

Commissioning After Malfunction

Steps for restarting after an automatic shutdown due to malfunction.

Service and Maintenance Recommendations

High Voltage and Electrical Safety

Safety warnings for working with high voltage and charged capacitors.

Service Check List

Oil Change Procedure

Oil Change Safety Precautions

Dangers of pressurized oil and fire/slip hazards.

Oil Reservoir and Filter Cartridge

Fine Oil Separator and Filter Lifespan

Fine Oil Separator Replacement

Air Filter Maintenance

Pressure Relief Valve Testing

Methods for testing the pressure relief valve.

Pressure Relief Valve Safety and Switch Cabinet

Defective Pressure Relief Valve Dangers

Risks associated with defective or missing pressure relief valves.

Switch Cabinet Electrical Safety

Safety measures for working on the switch cabinet.

General Maintenance and Cleaning

Filter Mat Replacement

Trouble-shooting - Start-up Issues

Unit Cannot Be Started

Possible causes and remedies for unit start-up failures.

Unit Stops During Start-up

Causes and remedies for unit stopping during the start-up phase.

Failure to Reach Set Pressure

Causes and remedies for not reaching the set mains pressure.

Trouble-shooting - Operational Issues

Unit Switches Off

Possible causes and remedies for unit switching off.

Idle Pressure Too High

Causes and remedies for excessively high idle pressure.

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