Atlas Copco GA 30+, Instruction Book

Page: 72 / 190

Several sensors are provided on the compressor. If one of the measured signals exceeds the programmed
shutdown level, the compressor will be stopped.
Example: If the compressor element outlet temperature exceeds the programmed shutdown level, the
compressor will be stopped. This will be indicated on the display of the controller.
The compressor will also be stopped in case of overload of the drive motor.
The compressor will also be stopped in the event of overload of the fan motor.
Before remedying, consult the Safety precautions.
Shutdown warning
A shutdown warning level is a programmable level below the shutdown level.
If one of the measurements exceeds the programmed shutdown warning level, this will also be indicated to
warn the operator before the shutdown level is reached.
The message disappears as soon as the warning condition disappears.
A warning will also appear if the dew point temperature is too high (on compressors with integrated dryer).
Service warning
A number of service operations are grouped (called Service Plans). Each Service Plan has a programmed
time interval. If the service timer exceeds a programmed value, this will be indicated on the display to warn
the operator to carry out the service actions belonging to that Service Plan.
Automatic restart after voltage failure
The controller has a built-in function to automatically restart the compressor when the voltage is restored
after voltage failure. For compressors leaving the factory, this function is made inactive. If desired, the
function can be activated. Consult the Atlas Copco Customer Centre.
If the function is 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.
The ARAVF label (see section Pictographs) shall be glued near to the controller.
Instruction book
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