Line Indication Meaning
1
xx.x
Current system pressure in bar, psi or MPa.
2
yy
Current airend discharge temperature (ADT) in °C or °F.
3
z
Display of parameters and their settings (see table 29)
4
1, 2, ...
Error code for alarm and warning messages (see table 37 and table 38).
Operating state: LOAD
Tab. 28 Display
4.8.2 Parameter
Parameter Meaning
0
Operating hours counter
Displays the total time the drive motor was switched on.
Only an authorized KAESER service representative has the right to change this pa‐
rameter.
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 must be reset to its default value after the mainte‐
nance work has been carried out. The interval starts anew.
A password is required to change this parameter.
3
Relief valve test mode
This function switches the activating pressure check mode for the safety relief valve on
and off.
The warning message
i is displayed when the check mode is switched on.
A password is required to change this parameter.
➤ Have the relief valve function checked by an authorized KAESER service repre‐
sentative as, by nature of the design, both cannot be tested together.
4
Temperature display unit
The airend outlet temperature can be displayed in either °C or °F.
5
Pressure display unit
The current working pressure can be displayed in bar, psi or MPa.
8
Switching the refrigeration dryer on/off
Factory setting: ON (Option T3)
This parameter switches the dryer permanently on or off:
■ OFF: refrigeration dryer off
■ ON: refrigeration dryer on
A password is required to change this parameter.
4
Design and Function
4.8
Functional description – SIGMA CONTROL BASIC
9_6917 34 USE
Operator Manual Screw Compressor
AIRTOWER 3C–7.5C Tri-Voltage
31
