Protecting the compressor
Shut-down
Several sensors are provided on the compressor. If one of the measured signals 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
Before remedying, consult the applicable safety precautions.
Shut-down warning
A shut-down warning level is a programmable level below the shut-down level.
If one of the measured signals exceeds the programmed shut-down warning level, a message will appear on
display (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 dew point temperature is too high in
relation to the ambient temperature.
Service warning
A number of service operations are grouped (called Service Plans). Each Service Plan has a programmed
time interval. If a time interval is exceeded, a message will appear on display (1) 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.
Instruction book
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2920 7140 90
Summary of Contents for GA15
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