4.7.2 SIGMA CONTROL MOBIL operating sequence
Operating
sequence
Key
Indication
Explanation
Ready to start
The «Start» key flashes.
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 either of the temper‐
atures is > 30 °C, the ma‐
chine 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.
Set 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_6975 00 E
Service Manual Screw Compressor
M135 SIGMA CONTROL MOBIL
37