Motor Overload - Atlas Copco GA5 User Manual

5 Shut-down
The compressor will be shut down in case:
- the temperature at the outlet of the compressor element
exceeds the shut-down level
- of error of the outlet pressure sensor
- of overload of the drive motor and, on air-cooled
compressors, also the fan motor
5.1 Compressor element outlet temperature
1. In case the outlet temperature of the compressor element
exceeds the shut-down level (120 °C, not programmable),
the compressor will be shut down, alarm LED (8) will blink,
automatic operation LED (10) will go out and following
screen will appear:
Shut-down screen, element outlet temperature
2. Press enter key (5), “r000” (register 000) appears.
3. Press arrow key (12), the actual compressor element
temperature appears:
Shut-down screen, element outlet temperature
The screen shows that the temperature at the outlet of the
compressor element is 122 °C.
4. Switch off the voltage and remedy the trouble.
5. After remedying and when the shut-down condition has
disappeared, switch on the voltage and restart the
compressor.
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5.2 Motor overload

1. In case of motor overload, the compressor will be shut down,
alarm LED (8) will blink, automatic operation LED (10)
will go out and following screen will appear:
Shut-down screen, motor overload
2. Switch off the voltage and remedy the trouble.
3. After remedying and when the shut-down condition has
disappeared, switch on the voltage and restart the
compressor.
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