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Gardner Denver L23 User Manual

Gardner Denver L23
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Original Operating and Service Manual
Screw Compressor
L23-L29
L23RS-L29RS
V1
USA
Id. No. ZS1137206 / 01 - November 2015

Table of Contents

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Gardner Denver L23 Specifications

General IconGeneral
BrandGardner Denver
ModelL23
CategoryAir Compressor
LanguageEnglish

Summary

General Information

Maintenance Importance

Ensures trouble-free operation and compressor longevity.

Warranty Conditions

Conditions for warranty claims and invalidation.

Warning and Safety Labels

DANGER & High-Risk Hazards

High-risk hazards leading to death or serious injury.

Warning Symbols Overview

Pressurized system, remote start, 30s delay, electric shock.

Electrical Safety Precautions

Loaded condensers and component handling precautions.

Risk Level Warnings

WARNING, CAUTION, and Burn Hazard indicators.

Notices and Prohibitions

Property damage notices and mandatory actions.

Specific Safety Prohibitions

Asphyxiation, open doors, manual reading, forklift use.

Preface to the Manual

Compressor Information

Details on Gardner Denver screw compressors.

Intended Use Definition

Defines the machine's purpose and limitations.

Maintenance and Care Guidelines

Importance of proper maintenance.

Service and Support Information

Contacting for faults, spare parts, and questions.

Warranty Exclusions

Conditions invalidating warranty coverage.

Safety Regulations Overview

General directive to observe safety rules.

Safety Regulations

General Safety Rules

Essential rules for safe operation and maintenance.

Compressed Air Hazards

Hazards and safety measures related to compressed air.

System Pressure Safety Measures

Measures for high temperatures, suction, and pressure relief.

Machine-Specific Dangers

Electrical, power quality, remote start, and noise hazards.

Water-Cooled Unit Dangers

Bacteria risks in cooling circuits.

Loading and Moving Dangers

Hazards during lifting and transport.

Workplace Safety

General environmental and procedural safety.

Maintenance Neglect Dangers

Risks from worn parts and lack of upkeep.

Maintenance and Repair Hazards

Hazards during service and using incorrect parts.

Modification and Conversion Dangers

Risks from unauthorized changes and non-original parts.

Assembly and Operation

System Assembly Guide

Guide to system component assembly.

System Schematic Diagram

Diagram of system components and flow.

Oil Circuit Function

Flow and function of the oil system.

Air Circuit Path

Path of air through the compressor.

Regulation System Explained

Control of compressor operation.

Regulator L23-L29 Operation

System idle and start procedures.

Regulator L23RS-L29RS Operation

System idle, start, and stop procedures.

Regulated Speed Operation

Speed control based on air demand.

Automatic Operation Modes

Control based on pressure and rundown time.

Transportation and Installation

Transportation Guidelines

Safety and procedures for moving the unit.

Unit Weights Information

Approximate weights of compressor models.

Installation Procedures

Instructions and safety for placing the unit.

Preparation for Commissioning

Cooling Air Requirements

Volume and channel diameter recommendations.

Compressed Air Connection

Guidelines for system connection.

Electrical Connection Guide

Instructions and safety for wiring.

Motor Protective Relay Check

Checking and setting procedures.

Control Transformer Setting

Checking and adjustment procedures.

Checking the Oil Level

Steps for oil level verification.

Noise Level Measurements

Measured noise for different models.

Commissioning Procedures

First Commissioning Steps

Step-by-step initial setup guide.

Restarting After Shutdown

Procedures for recommissioning.

Routine Commissioning

Standard commissioning steps.

Commissioning After Fault

Re-commissioning after a fault shutdown.

Shutoff and Emergency Stop

Procedures for stopping the unit.

Control System Operation

System Overview

Introduction to the control system.

Control Buttons Functions

Functions of the operator panel buttons.

Status Indicators Explained

Display and LED information.

Displaying and Changing Values

Menu navigation and value adjustment.

Default Settings Configuration

Setting language and system pressure.

Setting System Pressure (L23RS-L29RS)

Specific pressure adjustment.

Setting Time and Date (Timer)

Timer configuration.

Starting and Switching Off Unit

Unit start-up and shutdown procedures.

Emergency Off Button Usage

Usage and location.

Acknowledging Warning Messages

Handling warnings and faults.

Menu Structure (L23-L29)

Navigation map for standard models.

Menu Structure (L23RS-L29RS)

Navigation map for specific models.

Service and Maintenance

Maintenance Suggestions

Importance of scheduled service.

Electric Motor Maintenance

Motor service guidelines.

Maintenance and Test Schedule

Overview of service tasks and intervals.

Service Check List by Hours

Detailed maintenance tasks by operating hours.

Oil Change Procedure

Steps and safety for oil replacement.

Oil Filter Cartridge Replacement

Steps for changing the filter.

Fine Oil Separator Change

Procedure for replacing the separator.

Air Filter Change Procedure

Steps for replacing the air filter.

Pressure Relief Valve Test

Safety and testing procedures.

Terminal Settings Check

Checking control transformer and cabinet terminals.

Screw Connections Check

Checking and tightening.

General Maintenance and Cleaning

Unit cleaning guidelines.

Filter Pad Cleaning and Replacement

Air intake and control box filters.

Control Box Filter Replacement

Specific procedure for L23RS-L29RS.

Lubricant Recommendations

Oil types and notes.

Periodic Testing Requirements

Reservoir and electrical installation checks.

Troubleshooting Guide

System Start Failures

Issues preventing system startup.

Start-up Phase Stops

Problems occurring during startup.

Pressure Setpoint Issues

Failure to reach target pressure.

Unit Shutdown Causes

Reasons for unexpected unit power-off.

Idle Pressure and Oil Issues

Problems with idle pressure and oil in air/filter.

Pressure Relief Valve Open

Issues with the relief valve.

Appendix

Technical Specifications Overview

General specifications for L23-L29 models.

US Version L23-L29 (60Hz) Specs

Specific data for L23-L29 models.

US Version L23RS Specifications

Specific data for L23RS model.

US Version L26RS Specifications

Specific data for L26RS model.

US Version L29RS Specifications

Specific data for L29RS model.

Installation Diagrams

Visual guides for unit placement and connections.

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