The fuel stop device is activated when an alarm occurs. The engine comes to a stop and the
venting valve vents pressure from the machine.
4.5.2 Further safety devices
The following safety devices are provided and may not be modified in any way.
■
Pressure relief valves
Pressure relief valves protect the system against unacceptable pressure rise. They are factory
set.
■ Enclosures and guards for moving parts and electrical connections
protect against accidental contact.
4.6 Fuel level monitoring
The
Fuel level monitoring
indicating lamp on the instrument panel is used for monitoring the fuel
level within the system.
This combined indicating lamp signalises:
■ when the filling level in the fuel tank falls below the recommended level
and/or
■ the filling level in the fuel pre-filter is exceeded (water trap).
Fig. 7 Fuel level monitoring
1 Instrument panel
2
Combined indicating lamp (LED yellow):
Fuel level monitoring
3
Group alarm lamp
(red)
4.6.1 Fuel level monitoring
When the fuel level drops to a certain point (reserve), the combined indicating lamp
Fuel level
monitoring
on the instrument panel lights.
It signalises that the fuel tank requires filling.
After about 20 minutes running on reserve, the fuel reaches the minimum level. So that no air is
drawn into the fuel line, the engine is automatically shut down when this point is reached.
The
group alarm lamp
lights to indicate an alarm. The alarm is saved and the engine cannot be
restarted.
4 Design and Function
4.6 Fuel level monitoring
36
Service manual Portable compressor
M122 No.: 9_6974 20 E
To Next Page
