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INSTALLATION
tank from the top. Interference of the two systems (car engine
and generator engine) should be avoided.
Do NOT connect the fuel lines to the lines of the
vehicles engine fuel supply.
Driving the tank empty below the level of the
suction pipe of the generator could make it
necessary to bleed the fuel system.
2.5.1.2
Fuel lift pump
The generating set itself is equipped with a fuel lift pump;
therefore the tank can be installed at a lower level than the
generating set (Figure 8). The maximum suction height is 1 m.
Figure 7: Fuel supply (fuel tank is above the generating set)
Figure 8: Fuel supply (fuel tank is below the generating set)
6
The W-SQ 27 kVA / 25 kW has a mechanical fuel lift pump that
should be primed manually when the first time used.
If the pump has to lift the fuel higher than one meter an
external fuel lift pump must be installed (Art. No. 50201062).
The control board is already prepared to connect an extra fuel
pump. When using a second electric fuel supply pump, it is
recommended to mount a loose supplied pump close to the
tank and mount it in an angle or vertical to prevent air bubbles
to block the system (Figure 9). The pump will become quite hot
and should be mounted out of touch. The pump makes clicking
noises and therefore could be mounted on rubber mountings.
When the clicking noises of the pump are not acceptable
another noiseless pump is available as an option (Art. No.
50202200).
1 Fuel return
2 Fuel supply
3 Prefilter / Water separator (optional)
5 Fuel tank
1 Fuel return
2 Fuel supply
3 Prefilter / Water separator (optional)
4 Extra fuel lift pump (optional)
5 Fuel tank
W-SQ 27 kVA / 25 kW — October 2014 — EN
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