Parameters Meaning
8
Switching the refrigeration dryer on and off
Factory setting: ON
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.
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
frequency from LOAD to IDLE.
Range of adjustment [psig]: −1.5 ... −72
D
Setpoint pressure: switching point
The switching point corresponds to the working pressure of the air system and the cut-
out pressure of the machine.
Range of adjustment [psig]: 80 ... maximum working pressure
E
Maximum working pressure
The machine can deliver air up to this working pressure (see nameplate).
KAESER Service reserve the right to change these parameters.
F
Options
The displayed value informs KAESER Service concerning the controller's internal ma‐
chine configuration.
Tab. 27 Parameters
Further information Means of changing or adjusting parameters are given in chapter 8.4.
4.11.3 Messages
Alarm message
An alarm shuts the machine down automatically. The red LED
13
Warning message
The yellow LED lights
15
to indicate a warning (figure 13).
4
Design and Function
4.11 SIGMA CONTROL BASIC function
30
Service manual Screw compressor
Aircenter SX 3/7.5 SIGMA CONTROL BASIC
Number: 9_6945 01USE
