Atlas Copco GA250 User Manual

Atlas Copco Stationary Air Compressors
Important
1. This book applies to the compressors from serial number
AIF-024 378 onwards.
2. This book must be used together with the "User manual for Elektronikon
®
regulator", printed matter no.
2920 1291 0x.
*2920125102*
No. 2920 1251 02
Registration code: APC G ≥ 90/'99 / 38 / 995
Replaces 2920 1251 01
2000-01
GA90 - GA110 - GA132 - GA160 - GA200 - GA250 - GA315
GA90 W - GA110 W - GA132 W - GA160 W - GA200 W -
GA250 W - GA315 W
Instruction Book
• Copyright 2000, Atlas Copco Airpower n.v., Antwerp, Belgium.
Any unauthorized use or copying of the contents or any part thereof is prohibited. This applies
in particular to trademarks, model denominations, part numbers and drawings.
• This instruction book meets the requirements for instructions specified by the machinery directive
98/37/EC and is valid for CE as well as non-CE labelled machines

Atlas Copco GA250 Specifications

General

Model	GA250
Type	Rotary Screw Compressor
Category	Air Compressor
Power Output	250 kW
Nominal Motor Power	250 kW
Free Air Delivery	825 cfm
Air Delivery	825 cfm
Max Pressure	13 bar
Working Pressure	100 psi
Weight	3500 lbs
Dimensions Width	36 in
Dimensions Height	48 in
Dimensions Length	3000 mm
Drive Type	Direct Drive

Summary

Leading Particulars

General Description

Overview of GA and GA W stationary air compressors.

Elektronikon® Control System

Details on the Elektronikon regulator and its functions for compressor control.

Elektronikon Regulator Functions

Automatic control, protection, monitoring, restart, and permissive start functions of the regulator.

Control Panel Overview

Identifies control panel elements: indicators, keys, buttons, menus, and functions.

Compressor Control Modes

Explanation of the four selectable control modes for the compressor.

External Compressor Status Indication

How to obtain external indications of compressor status via terminal strip.

External Communication

Information on connecting the compressor to an Atlas Copco ES system.

Regulating System

Air Flow

Description of the air intake and compression process.

Condensate Drain System

Explanation of the condensate drain system and its components.

Oil System

Overview of the oil circulation and lubrication system.

Cooling System

Description of the air and oil cooling systems.

Unloading and Regulating System

Details on unloading process and regulating system operation.

Installation

Dimension Drawings

Provides dimensional drawings for various GA and GA W compressor models.

Installation Proposal

Guidelines for installing the compressor, including floor, ventilation, and piping.

Electric Cables

Specifications for mains and earth cable sizes for different compressor models and voltages.

GA - 50 Hz

Electric cable sizing for GA compressors operating at 50 Hz.

GA W - 50 Hz

Electric cable sizing for GA W compressors operating at 50 Hz.

GA/GA W - 60 Hz (except for Canada/USA)

Cable specifications for 60 Hz models in North America (excl. Canada/USA).

GA/GA W - 60 Hz Compressors for Canada/USA

Electric cable sizing for 60 Hz models specific to Canada/USA.

Pictographs

Identification of pictographs found on the control panel and bodywork.

Cooling Water Requirements

General rules for cooling water quality to prevent problems.

Operating Instructions

Safety Precautions

Essential safety measures for operating the compressor.

Outdoor/Altitude Operation

Precautions for operating the compressor in outdoor or high-altitude environments.

Moving/Lifting

Guidance on safely moving and lifting the compressor unit.

Preparation for Initial Start-up

Steps required before the first start-up of the compressor.

Before Starting

Actions to perform before starting the compressor.

Routine Starting

Procedure for starting the compressor during normal operation.

During Operation

Instructions and checks for operating the compressor.

Checking the Display

How to read and interpret the compressor's display messages.

Manual Unloading/Loading

How to manually control the compressor's loading and unloading states.

Stopping

Procedures for stopping the compressor, including emergency stops.

Taking Out of Operation

Steps for decommissioning and removing the compressor from service.

Maintenance

Preventive Maintenance Schedule for the Compressor

Schedule outlining maintenance tasks and intervals for the compressor.

Motors

Maintenance procedures for the drive motor and fan motors.

Fan Motors (GA only)

Maintenance specifics for fan motors on GA models.

Drive Motor

Instructions for greasing and maintaining the main drive motor.

Oil Specifications

Recommended oil types and properties for the compressor.

Roto-injectfluid

Details on Atlas Copco's recommended Roto-injectfluid oil.

Oil Change

Step-by-step guide for changing the compressor oil.

Oil Filter Change

Instructions for replacing the oil filters.

Storage After Installation

Measures for storing the compressor when not in use.

Adjustments and Servicing Procedures

Air Filters

Procedure for checking and replacing air filters.

Coolers

Instructions for cleaning the air and oil coolers.

Safety Valve

Operation and testing of the safety valve (SV).

Problem Solving

Principal Data

Readings on Display

Explanation of values displayed during normal compressor operation.

Programmable Settings

Overview of adjustable parameters in the Elektronikon regulator.

Settings of Safety Valves

Specifications for setting the compressor's safety valves.

Settings of Overload Relay, Circuit Breakers and Fuses

Guidelines for setting overload relays and selecting fuses.

Motor Overload Relay and Fuses for GA/GA W - 50 Hz with ABB Motors

Specific fuse and overload relay settings for ABB motors at 50 Hz.

Motor Overload Relay and Fuses for GA/GA W - 60 Hz with ABB Motors

Specific fuse and overload relay settings for ABB motors at 60 Hz.

Motor Overload Relay and Fuses for GA/GA W - 60 Hz with Siemens Motors (USA/Canada only)

Fuse and overload relay settings for Siemens motors at 60 Hz (USA/Canada).

Fan Motor Circuit Breakers for GA - 50 Hz

Circuit breaker settings for GA fan motors at 50 Hz.

Fan Motor Circuit Breakers for GA - 60 Hz

Circuit breaker settings for GA fan motors at 60 Hz.

Compressor Specifications

Technical specifications for compressor performance under various conditions.

Reference Conditions

Defines the standard conditions under which compressor data is measured.

Limitations

Specifies the operational limits for ambient and water temperatures.

Specific Data of GA/GA W 90 up to -160 7.5 bar - 50 Hz

Technical data for 7.5 bar 50 Hz GA/GA W 90-160 models.

Specific Data of GA/GA W 90 up to -160 10 bar - 50 Hz

Technical data for 10 bar 50 Hz GA/GA W 90-160 models.

Specific Data of GA/GA W 90 up to -160 13 bar - 50 Hz

Technical data for 13 bar 50 Hz GA/GA W 90-160 models.

Specific Data of GA/GA W 90 up to -160 100 psi - 60 Hz

Technical data for 100 psi 60 Hz GA/GA W 90-160 models.

Specific Data of GA/GA W 90 up to -160 125 psi - 60 Hz

Technical data for 125 psi 60 Hz GA/GA W 90-160 models.

Specific Data of GA/GA W 90 up to -160 150 psi - 60 Hz

Technical data for 150 psi 60 Hz GA/GA W 90-160 models.

Specific Data of GA/GA W 90 up to -160 200 psi - 60 Hz

Technical data for 200 psi 60 Hz GA/GA W 90-160 models.

Specific Data of GA/GA W 200 and -250 7.5 bar - 50 Hz

Technical data for 7.5 bar 50 Hz GA/GA W 200-250 models.

Specific Data of GA/GA W 200 and -250 10/13 bar - 50 Hz

Technical data for 10/13 bar 50 Hz GA/GA W 200-250 models.

Specific Data of GA/GA W 200 up to -315 100 psi - 60 Hz

Technical data for 100 psi 60 Hz GA/GA W 200-315 models.

Specific Data of GA/GA W 200 up to -315 125 psi - 60 Hz

Technical data for 125 psi 60 Hz GA/GA W 200-315 models.

Specific Data of GA/GA W 200 up to -315 150 psi - 60 Hz

Technical data for 150 psi 60 Hz GA/GA W 200-315 models.

Specific Data of GA/GA W 250 and -315 200 psi - 60 Hz

Technical data for 200 psi 60 Hz GA/GA W 250-315 models.

Conversion List of SI Units into British/US Units

Converts common SI units to their British/US equivalents.