Installation Instructions
9.2.16
Kapitel/Chapter 6: Installation Instructions - Seite/Page 75
6.9.3 Connection of the fuel lines at the tank
Lead the return fuel pipe connected to the day tank to the floor
The return pipe connected to the tank must be dropped to the same depth as the suction pipe, if the generator is
mounted higher than the tank, in order to prevent fuel running back into the tank after the motor has been switched
off, which can lead to enormous problems, if the generator is switched off for a long period.
Non-return valve in the suction pipe
A non-return valve must be fitted to the suction pipe, which prevents the fuel flowing back after the generator has
been switched off, if it is not possible to use the return flow pipe as a submerge pipe placed in the tank. The
instructions „Bleeding Air from the Fuel System“ must be read after initial operation or after it has stood still for a long
period, in order to preserve the starter battery.
ATTENTION!
Non-return valve for the fuel return pipe
If the fuel tank should be installed over the level of the
generator (e.g. daily tank), then a non-return valve must
be installed into the fuel return pipe to guarantee that
through the return pipe no fuel is led into the injection
pump.
6.9.4 Position of the pre-filter with water separator
Fig. 6.9.4-1: Pre-filter with water separator
Additionally to the standard fine filter a pre-filter with water
separator must be installed outside of the sound insulation
capsule in the fuel system line (not included in the delivery).
6.9.5 Ventilating air from the fuel system
Normally, the fuel system is designed to vent air itself i.e. as soon as the electric starter motor starts; the fuel pump
starts working and the fuel system will be air-vent automatically after some time. It is, nevertheless essential, to vent
the system as follows prior to the first operation (as all hoses are empty):
1. Switch main power switch on control panel „ON“.
2. Push failure bypass switch and hold tight.
The electric fuel pump has to be run audibly. By moving the failure bypass switch you can hear the solenoid valve of
the generator starting and stopping (when the sound insulation cover is taken off).
3. After the fuel pump has been running 3 to 4 minutes, because the failure bypass switch has been pressed down,
the bleeding screw of the solenoid valve has to be unscrewed. The switch has to be continuously depressed,
when opening the screw. A piece of cloth or absorbent paper should be put under the connection to avoid fuel
entering the sound insulation cover.