Atlas Copco ZR 110, Instruction Book

Page: 115 / 328

Compressor protection
Shutdown warning
A shutdown warning level is set less critical than the shutdown level.
The compressor is equipped with several sensors to check pressures and temperatures. If one of these
measurements exceeds the set shutdown warning level, a message will be displayed and the general alarm
LED (next to the exclamation mark) will be lit to warn the operator.
The warning message disappears as soon as the measurement is below warning level.
Shutdown
If one of the sensors reaches a set shutdown level, the compressor will be stopped. This will be displayed
on the controller and the general alarm LED will blink.
Solve the problem and reset the message. See also the Inputs menu .
Before remedying, always check the applicable safety precautions.
Service warning
A number of service intervals are grouped into Service Plans , all with their own time frame. If a service
interval is reached, a message will appear on the controller display to warn the operator to carry out the
prescribed service actions stated in a certain Service Plan.
Automatic restart after voltage failure (ARAVF)
The controller allows automatic restart of the compressor unit if the supply is restored after voltage failure.
For compressors leaving the factory, this function is disabled. If desired, this function can be enabled by
your local Atlas Copco Customer Center.
Assuming the controller was running in automatic operation, the compressor unit will
restart when the supply voltage to the module is restored if ARAVF is enabled. As long
as the emergency stop is enabled, ARAVF is disabled.
Instruction book
2920 1815 04 113