Extract from Service Manual
1 --- 3
1.2.2 Display of Parameters
Line
Display Meaning
3
0 Operating hours counter
Displays the period in which the motor was switched on.
1 Load hours counter
This shows the number of hours the compressor has operated
under load.
2 Maintenance interval counter
Displays the number of operating hours until the next scheduled
maintenance.
It counts back from a set value. The warning message ”S” is dis-
played when the counter reaches zero.
When maintenance is complete the counter should be reset to its
original value. The interval begins to run out again.
3 Pressure relief valve check mode on/off (password protected)
This switches the pressure relief valve blowoff pressure check on
and off.
The warning message ”i” is displayed when the check mode is
switched on.
Checking and finding password: see chapter LEERER MERKER.
4 Temperature display units
The airend discharge temperature can be displayed in ˚ C or ˚F.
5 Pressure display units
Current working pressure can be displayed in bar, psi or MPa.
6 Activate refrigeration dryer: on/off
In this operating mode the integrated refrigeration dryer operates
(if provided).
on: Impulse timer
off: Continuous
7 System pressure: Switching differential
The switching differential is the difference between cut---in pres-
sure and cut---out pressure (required system pressure) and deter-
mines the frequency of switching between LOAD and IDLE RUN-
NING.
Setting range: ---0.1...---5.0 bar
8 Required system pressure: switching point
The switching point is the required pressure of the air main (sys-
tem pressure) and the cut---out pressure of the compressor.
Setting range (bar): 5.5...maximum system pressure
9 Maximum working pressure
The compressor can deliver air up to this pressure (see name-
plate).
The maximum working pressure is factory---set and can only be
changed by authorized KAESER service
Tab. 4 Parameters
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