Example: If the compressor element outlet temperature exceeds the programmed shut-down level, the
compressor will be stopped. This will be indicated on the display of the controller. The compressor will also
be stopped in case of overload of the drive motor.
Air-cooled compressors will also be stopped in the event of overload of the fan motor.
Before remedying, consult the
Shut-down warning
A shut-down warning level is a programmable level below the shut-down level.
If one of the measurements exceeds the programmed shut-down warning level, this will also be indicated to
warn the operator before the shut-down level is reached.
Service warning
If the service timer exceeds a programmed value, this will be indicated on the display to warn the operator to
carry out some service actions.
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.
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.
3.2
Control panel
Detailed description
Function keys of the controller
Instruction book
18
2920 7101 21
Summary of Contents for QGS 40
Page 1: ...QGS 40 QGS 50 QGS 60 QGS 75 QGS 100 Instruction book Oil flooded rotary screw compressors...
Page 2: ......
Page 100: ......
Page 101: ......