Initial Start---up
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7.8 Initial Start---up
Open the shut---off valve to the air network.
Switch on at the main supply isolator.
The controller makes a self---test and the green LED ’Power ON’ lights.
Press the ’Operating state LOAD/IDLE’ key.
Press the ’ON’ key.
The green LED ’Machine ON’ lights.
Allow the machine to idle for at least one minute.
This ensures good distribution of cooling oil.
Press the ’Operating state LOAD/IDLE’ key.
The machine switches to the LOAD state and delivers compressed air.
Watch for any faults occurring in the first hour of operation.
After the first 50 operating hours carry out the following:
Check that all electrical connections are tight.
7.9 System pressure setting
The system pressure p1 is factory set to the highest possible value.
Adhustment is necessary for individual operating conditions.
System pressure setting is described in the SIGMA CONTROL service manual.
The machine may toggle a maximum of twice per minute between LOAD
and IDLE.
Reducing starting frequency:
Increase the difference between cut---in and cut---out pressure.
Add an air receiver downstream to increase buffer capacity.
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