10.4.3.2 Fuel pre-filter maintenance
Emptying the water trap
The fuel pre-filter is equipped with a water trap. Contaminating water is trapped in the water recep‐
tacle. The water trap is connected by a sensor to the controller. If the water in the trap reaches a set
level, the controller displays a warning.
■ The display indicate water in the fuel filter.
■ The «Information key » lights up,
■ The «Acknowledge» key flashes.
The water trap receptacle must be emptied when this warning is given.
Fig. 54 Warning messages: Fuel filter water level
R2
Message category: warning
R4
Message code
R9
Fuel filter water level
Fig. 55 Emptying the fuel pre-filter water trap
1
Fuel pre-filter with water trap
2
Water receptacle
3
Drainage tap
1. Place a receptacle beneath the fuel pre-filter.
2. Open the drainage tap and allow water and dirt to drain out into the receptacle.
3. Close the drainage tap.
4. Activate the «battery isolating switch».
5. Close the door.
Maintenance must be acknowledged after the water trap has been emptied.
Precondition Draining the water trap
10 Maintenance
10.4 Engine
No.: 9_9425 01 E
Service Manual Screw Compressor
M170 SIGMA CONTROL MOBIL
111