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6
M-SQ PRO 15/18 kVA
1.5.1 Fuel supply
1
FUEL TANK
Fuel tanks should be made of appropriate material such as
(stainless) steel or plastic. Steel tanks should not be galvanized
or painted inside. Condensation can occur in metal tanks when
temperature changes. Therefore, water accumulates at the bot-
tom of the tank and provisions should be made for the drainage
of this water.
The tank will need a filling connection, a return connection and
an air ventilation connection which will require protection against
water entry.
Some official regulations do not allow connection points at the
base of the fuel tank; in this instance connections are to be made
at the top of the tank with internal tubing down to a few cm
above the bottom of the tank.
Fig. 3: Fuel supply
1.
Fuel return
2.
Fuel supply
3.
Prefilter / Water separator (optional)
5.
Fuel Tank
Marine Diesel Generator
2
FUEL LIFT PUMP
The generating set itself is equipped with a fuel lift pump; there-
fore the tank can be installed at a lower level than the generating
set. The maximum suction height is 1 m. The M-SQ- PRO 18 has a
mechanical fuel lift-pump that should be primed manually before
the first start/use.´
If the pump has to lift the fuel higher than one meter an external
electrical fuel lift pump must be installed (Art. No. 50201161)
or heavy duty pump (Art. No. 50201168). The control board is
already prepared to connect an extra fuel pump.
3
FUEL PIPES
When the tank is above the generating set we recommend end-
ing the return line on the top of the tank.
When the return is on the top - in case of a leakage the return
line cannot overflow because of siphoning. One will only need a
fuel cock in the fuel supply line (see figure 3). When the tank is
below the generating set we recommend ending the return line
on the bottom of the tank (A) below the inlet of the supply line
(see figure 4)
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