8. Deactivate the test function
9. Open the user's shut-off valve between the machine and the air distribution network.
10.11 Check the safety shut-down due to excessive airend discharge
temperature.
The machine should shut down if the airend discharge temperature reaches a maximum of 110 °C.
➤ Check the safety shutdown function as described in the SIGMA CONTROL 2 operating man‐
ual.
The machine does not shut down?
➤ Have the safety shut-down function checked by an authorised KAESER SERVICE tech‐
nician.
10.12 Check the EMERGENCY STOP control device
Fig. 25 Check the EMERGENCY STOP control device
9 EMERGENCY STOP control device
Precondition Compressor motor running
1. Press the EMERGENCY STOP control device.
The compressor motor stops, the pressure system is vented, and the machine is prevented
from automatically re-starting.
The compressor motor does not stop?
The safety function of the EMERGENCY STOP device is no longer ensured.
➤ Shut down the machine immediately and call KAESER SERVICE.
2. Turn the EMERGENCY STOP device in the direction of the arrow to unlatch it.
3. Acknowledge the alarm message.
10.13 Checking the cooling oil level
In frequency-controlled compressors (SFC) the cooling oil level indicator is only accurate
when the machine is running at or near maximum speed.
The lower the pressure at the compressed air outlet, the higher the speed.
The SIGMA CONTROL 2 displays this value.
Precondition The machine has been running at least 5 minutes in LOAD mode.
10 Maintenance
10.11 Check the safety shut-down due to excessive airend discharge temperature.
901824 12 E
Operating Manual Screw Compressor
ASK
69
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