Instruction book
6996 0227 40 19
Protecting the Vacuum pump
Shut-down
Several sensors are provided on the vacuum pump. If one of the measurements succeeds the
programmed shut down level, the vacuum pump 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 Inputs menu.
Before remedying, consult the Safety precautions.
Shut-down warning
A shut-down warning level is a programmable level below the shut-down level.
If one of the measurements succeeds 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:
- Element outlet temperature is too high
- Pump discharge pressure is too high
- Purge cycle was not successful (temperature not reached within requested time)
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 regulator has a built-in function to automatically restart the vacuum pump if the voltage is restored
after voltage failure. For vacuum pumps leaving the factory, this function is made inactive. If desired, the
function can be activated. Consult the Atlas Copco Customer Center.
If activated and provided the regulator was in the automatic operation mode, the vacuum
pump will automatically restart if the supply voltage to the module is restored.
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