Other shutdown causes
In case the compressor is shut down (or cannot start) by one of following causes:
• Too high element outlet temperature, detected by temperature switch (TSHH11) or additional
temperature switch (TSHH21).
• Overload of the compressor motor (M1) or the fan motor (M2).
• Incorrect phase sequence, detected by phase sequence relay (K25).
The compressor will be shutdown, alarm LED (5) will flash, automatic operation LED (3) will go out and
following screen will appear:
Main screen with shutdown indication
Actions:
• Switch off the voltage and remedy the problem cause.
• In case of incorrect phase sequence, reverse two phases of the supply cable.
• If the additional temperature switch (TSHH21) has tripped, you must contact the Atlas Copco
customer centre.
• After remedying and when the shutdown condition has disappeared, switch on the voltage and restart
the compressor. The shutdown message will disappear automatically when the shutdown condition
has disappeared.
7.7
Service warning
Description
A service warning will appear when the service timer has reached the programmed time interval.
If the service timer exceeds the programmed time interval, service LED (9) will light up.
Instruction book
2920 7140 90
31
Summary of Contents for GA15
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