Symbol Led flashing Led on
The oil temperature switch (TSH) has
switched off the motor. The NC contact
is open.
The NC contact of the oil temperature switch is
closed again, but the fault is not yet reset.
On star/delta started compressors,
during start-up (transitory: star
contactor energized)
-
- Compressor running loaded
General alarm -
Not enabled Not enabled
Compressor running unloaded (idle)
before stopping
-
Compressor ready to start - (Stand-by) Compressor operating
- Main power on
To start up again after a protection has been triggered (alarm): press the RESET button,
followed by the START button (1).
The motor will start after a delay of 25 seconds.
Operation of the central control unit
The central control unit is programmed for Energy Saving. It will automatically start and stop the compressor,
depending on the need for compressed air. Before switching off, the compressor will run idle (unloaded). The
idling period decreases when the air consumption decreases, thus reducing idle running to a minimum. See
also Regulating system.
Reference Designation Function
1
2
Start button
Stop button
To start or stop the compressor. After the stop command,
the compressor will run unloaded for a period of 120
seconds and then stop.
Hm Hour meter Indicates the total running time.
Gdp Dew-point gauge Indicates the dew-point temperature.
Not installed on Pack versions
Gpa Working pressure The white pointer indicates the actual working pressure.
The red one indicates the maximum limit.
S3 Emergency stop button To stop the compressor immediately; only to be used in
the event of an emergency. Must be unlocked before
starting by pulling it out.
Only use emergency stop button (S3) in the event of an emergency.
Instruction book
2920 7054 00 19
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