KAESER KOMPRESSOREN SX, Service Manual, Page: 38 / 122

Parameter Meaning
2
Maintenance interval counter
Displays the number of operating hours until the next scheduled maintenance is due.
SIGMA CONTROL BASIC counts down the operating hours from a default value. The‐
warning message
S is displayed when the counter reaches zero.
The maintenance interval counter is reset to its default value after the maintenance work
has been carried out. The interval starts anew.
A password is required to change these parameters.
3 Relief valve test mode
This function switches the activating pressure check mode for the pressure relief valve
on and off.
The warning message
i is displayed when the check mode is switched on.
A password is required to change these parameters.
See chapter for the password and carrying out the check.10.10
4 Unit of measurement for display of temperature
The airend discharge temperature can be displayed in either °C or °F.
5 Units used for display of pressure
The current working pressure can be displayed in bar, psi or MPa.
6 Control modes
Factory setting: OFF
This parameter changes the control mode.
■ OFF: QUADRO
■ ON: DUAL
7 Refrigeration dryer control modes
Factory setting: OFF
This parameter changes the dryer control mode.
■ OFF: TIMER
■ ON: CONTINUOUS
8 Switching the refrigeration dryer on and off
Factory setting: ON (option T3)
This parameter switches the dryer permanently on or off.
■ OFF: Dryer switched off
■ ON: Dryer switched on
A password is required to change these parameters. In machines without a refrigeration
dryer, the parameter is factory set to OFF.
C Setpoint pressure: switching differential
The switching differential determines the difference between cut-in pressure and cut-out
pressure (system pressure setpoint: switching point) and therefore the switching fre‐
quency from LOAD to IDLE.
Range of adjustment [bar]: -0.1 ... −5.0
4 Design and Function
4.9 SIGMA CONTROL BASIC function
28
Service Manual Screw Compressor
SX SIGMA CONTROL BASIC
9_6919 04 E