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Atlas Copco GA 75+ User Manual

Atlas Copco GA 75+
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If one of the measurements exceeds the programmed shut-down warning level, this will also be indicated to
warn the operator before the shut-down level is reached.
Service warning
If the service timer exceeds a programmed value, this will be indicated on the display to warn the operator to
carry out some service actions.
Automatic restart after voltage failure
The regulator has a built-in function to automatically restart the compressor when the voltage is restored after
voltage failure. This function is deactivated in compressors leaving the factory. If desired, the function can
be activated. Consult the Atlas Copco Customer Centre.
If activated, and if the regulator was in the automatic operation mode, the compressor will
automatically restart when the supply voltage to the module is restored!
3.2 Control panel
Detailed description
Control panel of the Elektronikon controller
Reference Designation Function
1 Display Shows icons and operating conditions.
2 Automatic operation symbol
3 LED, Automatic operation Indicates that the regulator is automatically controlling the
compressor: the compressor is loaded, unloaded,
stopped and restarted depending on the air consumption
and the limitations programmed in the regulator.
4 Warning symbol
5 LED, Warning Is lit if a warning condition exists.
6 Voltage symbol
7 LED, Voltage on Indicates that the voltage is switched on.
8 Service symbol
Instruction book
2920 7109 60 27

Table of Contents

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Atlas Copco GA 75+ Specifications

General IconGeneral
ModelGA 75+
CategoryAir Compressor
Power75 kW
Capacity FAD13.5 m³/min
Working Pressure7.5-13 bar
Noise Level70 dB(A)
Cooling SystemAir Cooled
Drive TypeDirect Drive

Summary

Safety Precautions

General Safety Precautions

Provides essential safety rules for operating and maintaining the compressor.

Safety Precautions During Installation

Outlines crucial safety measures to follow during the installation process of the compressor.

Safety Precautions During Operation

Details safety guidelines to ensure safe operation of the compressor.

Safety Precautions During Maintenance or Repair

Specifies safety measures for performing maintenance and repair work on the compressor.

Oil System

Cooling System

Regulating System

Elektronikon Regulator

Automatic Compressor Control

Explains how the regulator manages compressor loading and unloading.

Compressor Protection and Shutdown

Details how the regulator protects the compressor and initiates shutdowns.

Control Panel Detailed Description

A detailed breakdown of the Elektronikon controller's control panel and its elements.

Display Icons and Status

Explains various icons used on the Elektronikon display for status and functions.

Shut-down Warning

Details the conditions that trigger a shut-down warning on the compressor.

Compressor Shutdown

Explains the conditions and indicators for compressor shutdown.

Motor Overload Shutdown

Describes the process when the compressor motor experiences an overload.

Service Warning

Explains what triggers a service warning and how it is indicated.

Service Timer: Calling Up and Resetting

Guide to view and reset the service timer for maintenance intervals.

Local, Remote, or LAN Control Selection

How to select the compressor's control mode: local, remote, or network.

Pressure Band Settings: Calling Up and Modifying

Guide to view and adjust pressure band settings for compressor operation.

Modifying Pressure Band Selection

Steps to change the active pressure band for compressor control.

Service Timer Settings: Calling Up and Modifying

How to view and change service timer settings.

Activating Password Protection

How to set up password protection for compressor settings.

Protection Settings: Calling Up and Modifying

Guide to configure and modify compressor protection settings.

Programmable Settings

Unloading/Loading Pressures (No Dryer)

Table of programmable unloading and loading pressures for compressors without dryers.

Unloading/Loading Pressures (With Dryer)

Table of programmable pressures for compressors with built-in dryers.

Programmable Parameters

Lists programmable parameters like motor running time, stop time, etc.

Programmable Protections

Details programmable protection settings for temperature and other parameters.

Elektronikon Graphic Controller

Graphic Controller Control Panel

Identifies the components of the Elektronikon Graphic controller's control panel.

Automatic Compressor Operation Control

How the Graphic controller manages compressor operation automatically.

Graphic Controller Compressor Protection

How the Graphic controller protects the compressor and handles shutdowns.

Graphic Controller Shut-down Warnings

Explains shut-down warnings indicated by the Graphic controller.

Graphic Controller Service Warnings

Details service warnings from the Graphic controller.

Elektronikon Regulator Control Panel

Identifies parts and functions of the Elektronikon regulator control panel.

Status Icons

Explains icons related to compressor status and machine control modes.

Main Screen Control Panel

Identifies controls on the main screen interface.

Control Mode Selection

How to select the compressor's control mode: local, remote, or LAN.

Service Menu

Accessing service plans, checking service intervals, and modifying settings.

Service Plans and Modification

Details service plans and how to modify their intervals.

Setpoint Menu

Used to program and select active pressure bands for compressors.

Modifying General Settings

Guide to view and modify general settings like language, date, etc.

Week Timer Menu

Used to program time-based start/stop commands and week schemes.

Programming Week Schemes

Steps to create and configure weekly action schemes for the compressor.

Programming the Week Cycle

How to set up a 10-week cycle using programmed week schemes.

User Password Menu

How to manage user password protection for settings.

OSCi Condensate Treatment

OSCi Warnings: Service Required

Explains the warning for low filter lifetime and the need for service.

OSCi Overflow Warning

Describes the warning for a high water level in the OSCi and potential overflow.

OSCi Compressor Problems

Troubleshooting common issues with the compressor and OSCi, like oil leaks or overload.

OSCi Water Level and Airflow Issues

Troubleshooting high water levels, air supply problems, and test procedures for the OSCi.

Energy Recovery Unit (Optional)

ER Unit Maintenance

Procedures for oil change and maintenance of bypass valves and heat exchangers.

Installation

Installation Description and Requirements

Details installation requirements, ventilation, air delivery pipe, drain pipes, and control module.

Electrical Connections

Electrical Connections Overview

Guides on making electrical connections, including important remarks.

Electrical Connection Instructions and Status

Step-by-step instructions for electrical connections and compressor status indications.

Compressor Control Modes

Explains the available control modes: local, remote, and LAN.

Operating Instructions

Initial Start-Up Safety and Preparations

Safety precautions and preparatory steps before the initial start-up.

Electrical Connections and Initial Checks

Checks for electrical connections, transformer, overload relay, and circuit breakers.

Initial Start-Up Procedure

Detailed steps for starting the compressor for the first time or after a long period.

Starting the Compressor

Procedure for starting the compressor, including voltage checks and cooling water regulation.

Maintenance

Preventive Maintenance Schedule Overview

Outlines the regular maintenance schedule based on periods and hours.

Maintenance Checklist and Intervals

Details daily, monthly, 3-monthly, and yearly maintenance tasks.

Oil and Oil Filter Change Procedure

Detailed steps for draining oil, changing the oil filter, and refilling.

Problem Solving

Compressor Faults and Remedies

Troubleshooting common compressor issues like motor overload or failure to start.

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