Gardner Denver L75 User And Service Manual

Gardner Denver L75 User And Service Manual

Screw air compressor
Table of Contents

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Original User and Service Manual
Screw Air Compressor
L55 - L75
L55RS - L75RS
USA
13-21-605
VERSION: 00

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Table of Contents
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Summarization of Contents

Introduction and Safety Overview
Manual Overview and Purpose
Provides an overview of the manual's content and purpose for users.
Maintenance and Warranty Details
Highlights maintenance importance and details warranty terms, warning against non-genuine parts.
Danger and Safety Symbols Explained
Explains hazard symbols like DANGER, WARNING, CAUTION, and NOTICE.
Prohibitions and Mandatory Actions
Lists essential prohibitions and mandatory actions for safe operation.
Preface and General Notes
Compressor Information and Intended Use
Details about compressors, their intended applications, and safety regulations.
Maintenance, Care, and Service
Importance of maintenance, care, and contacting service representatives for parts.
Safety Regulations and Dangers
General Safety Regulations
Essential rules for safe operation, including warnings about symbols and fault handling.
Compressed Air Dangers
Details hazards from compressed air, connections, expansion, and loose hose ends.
Machine and Operational Dangers
Covers risks like electric shock, noise, and unexpected remote starts of the compressor.
Maintenance Neglect Dangers
Explains risks from worn parts, perished lines, oil leaks, and faulty sensors.
Conversion Work Dangers
Warns against unauthorized modifications and using non-genuine parts.
Design and Functioning
Unit Design Overview
Illustrates and describes the components of air-cooled and water-cooled compressor units.
System Schematic Diagrams
Provides detailed schematics of the compressor's air, oil, and control circuits.
System Control Logic
Explains the system control logic for L55-80 and L55RS-L75RS models.
Transport and Installation
Compressor Transport Procedures
Safety instructions and procedures for lifting and moving the compressor unit.
Compressor Installation Guidelines
Guidelines for proper placement, ventilation, and leveling of the compressor.
Commissioning Preparations
Cooling Air Requirements
Specifies cooling air requirements and ventilation setup for the compressor.
Compressed Air Connection
Details on connecting the compressor outlet to the customer's air system safely.
Water Connection for Water-Cooled Units
Instructions for connecting cooling water, including safety and environmental notes.
Electrical Connection Procedures
Safety warnings and procedures for electrical hookup, including voltage and cable size.
Commissioning Procedures
Initial Commissioning Steps
Step-by-step guide for initial startup, including safety checks and motor rotation.
Restarting After Decommissioning
Procedures for restarting a compressor after a period of storage or shutdown.
Routine Commissioning Checks
Steps for regular commissioning, including checks before starting and during operation.
Shutdown and Emergency Stop
Procedures for normal shutdown and emergency stopping of the compressor unit.
Compressor Storage
Decommissioning for Storage
Guidelines for preparing compressors for storage, including corrosion protection and coolant draining.
Service and Maintenance
Maintenance Recommendations Overview
Overview of maintenance importance, scope, and options for service contracts.
Electric Motor Maintenance
Instructions for lubricating electric motor bearings and recommended intervals.
Maintenance and Inspection Schedule
Detailed schedule of checks and service tasks based on operating hours and time intervals.
Oil Change Procedures
Procedure for draining and replacing the compressor oil, including safety precautions.
Oil Filter Cartridge Replacement
Step-by-step guide for replacing the oil filter cartridge.
Fine Oil Separator Replacement
Instructions for replacing the fine oil separator, including when it's time for service.
Air Intake Filter Change
Procedure for changing the air intake filter, emphasizing its importance for machine health.
Pressure Relief Valve Testing
Information on testing and the importance of the pressure relief valve for system safety.
Electrical Connections and Control Transformer
Checks and settings for switch cabinet terminals and the control transformer.
General Maintenance and Cleaning
Guidelines for general cleaning of the compressor, including safety warnings.
Dirt Interceptor Cleaning
Procedure for cleaning the dirt interceptor in water-cooled units.
Technical Specifications
USA/CANADA L55-L80 Air-Cooled Specs
Detailed technical data for L55, L75, L80 air-cooled compressors at 60 Hz.
USA/CANADA L55 RS Air-Cooled Specs
Detailed technical data for the L55 RS air-cooled compressor at 60 Hz.
USA/CANADA L75RS Air-Cooled Specs
Detailed technical data for the L75RS air-cooled compressor at 60 Hz.
Layout Plan and Dimensions
Diagrams showing dimensions and connection points for air-cooled and water-cooled variants.

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