Operating
sequence
Key
Indication
Explanation
Start
➤ Press the
«Start» key.
The engine starts auto‐
matically.
Maximum starting time
15 seconds.
The starter disengages
automatically when the
engine picks up speed.
Engine running
The «Start» key illumi‐
nates.
Warm-up /
IDLE phase
The machine runs in
IDLE until the ADT* and
ECT** reach 30 °C.
While the either of the tem‐
peratures is > 30 °C, the
machine cannot be
switched to LOAD.
The machine may be
switched to LOAD when
the «Load» key flashes.
LOAD
➤ Press the
«Load» key.
The machine switches
over to LOAD.
The «Load» key illumi‐
nates.
Setting pressure
7,5 bar
5,0 bar
10,0 bar
The outlet pressure is set.
either
Run-on phase
➤ Press the
«Load» key.
The machine switches
over to unloaded run-on.
The engine runs at IDLE
speed.
The machine is vented.
The «Load» key flashes.
* ADT = airend discharge temperature
** ECT = engine coolant temperature
*** OST = oil separator tank
4
Design and Function
4.7
SIGMA CONTROL MOBIL function
No.: 9_9425 01 E
Service Manual Screw Compressor
M170 SIGMA CONTROL MOBIL
37