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7.8
7.9
Fig. 15
7.10
9_5875 33 USE
7
Initial Start-up
7.8
Setting the set point pressure
Setting the set point pressure
The system pressure pA is factory set to the highest possible value.
Adjustment is necessary for individual operating conditions.
Do not set the set point pressure of the machine higher than the maximum working pressure
of the compressed air system.
The machine may not toggle more than twice per minute between LOAD and IDLE.
To reduce the cycling (toggling) frequency:
➤ Increase the difference between cut-in and cut-out pressure.
➤ Add a larger air receiver downstream to increase buffer capacity.
➤ Set the set point pressure as described in the SIGMA CONTROL 2 operating manual.
Checking the Door Interlock Switch
The interlock switch stops the machine as soon as a door or access panel is opened.
Check the interlock switch function on commissioning.
The door interlock switch is an important safety device.
The machine may only be operated with a correctly functioning interlock switch.
Interlock switch position
Door interlock switch
1
Panel
2
1. Open the access panel
The machine switches off automatically. The controller displays an alarm message.
2. Close the panel and acknowledge the alarm.
The machine does not switch off automatically?.
➤ Have the interlock switch checked by an authorized KAESER service representative
agent.
Setting the display language
The controller can display text messages in several languages.
Operator Manual
Screw Compressor
SM Tri-Voltage, SIGMA CONTROL 2
while the machine is running.
2
45
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