Atlas Copco GA90 User Manual

35
Instruction book
9096 3313 00
Protecting the compressor
Shut-down
Several sensors are provided on the compressor. If one of these measurements exceeds the programmed
shut-down level, the compressor will be stopped. This will be indicated on display (1) and general alarm
LED (2)will blink.
Remedy the trouble and reset the message. See also the
Inputs menu.
Before remedying, consult the Safety precautions.
Shut-down warning
A shut-down warning level is a programmable level below the shut-down level.
If one of the measurements exceeds the programmed shut-down warning level, a message will appear
ondisplay (1) and general alarm LED (2) will light up, to warn the operator that the shut-down warning level
is exceeded.
The message disappears as soon as the warning condition disappears
Warning
A warning message will appear if, on full-Feature compressors, the Dewpoint temperature is too high
inrelation to the ambient temperature
Service warning
A number of service operations are grouped (called Service Plans). Each Service Plan has a programmed
timeinterval. If a time interval is exceeded, a message will appear on display (1) to warn the operator to
carry outthe service actions belonging to that Service Plan.
Automatic restart after voltage failure
The regulator has a built-in function to automatically restart the compressor if the voltage is restored
aftervoltage failure. For compressors leaving the factory, this function is made inactive. If desired, the
functioncan be activated. Consult the Atlas Copco Customer Centre.
If activated and provided the regulator was in the automatic operation mode, the
compressor will automatically restart if the supply voltage to the module is restored.

Atlas Copco GA90 Specifications

General

Model	GA 90
Power	90 kW
Type	Rotary Screw Compressor
Max Working Pressure	13 bar
Cooling System	Air Cooled
Noise Level	72 dB(A)