Cooling - Whisper Power M-SQ Pro 15 Installation Manual

Fig. 4: Fuel supply
1. Fuel return
2. Fuel supply
3. Prefilter / Water separator (optional)
4. Extra fuel lift pump (optional)
5. Fuel tank
Both supply and return fuel pipe lines should be appropriate ma-
terial and 8 mm outer diameter tubing. The quality of the tubing
of fuel pipes could be submitted to local regulations depending
on the application of the vessel.
The fuel pipes can be plumbed to the flexible hoses which are
on the generating set and have a connection to fit to 8 mm pipe.
This fuel lines fulfills CE standards and are in accordance with ISO
7840 A2. It is important to avoid bends in the pipes, as they could
trap air bubbles. The return pipe should never be connected to
the suction pipe or to other consumers of diesel fuel, such as the
propulsion engine and heaters and return pipes
4 FUEL FILTERS
A fine fuel filter is installed which requires maintenance. Whis-
perPower advises to install an extra fuel filter/ water fuel separa-
tor near the fuel tank.
Before starting your generating set for the first time follow the
fuel system bleeding procedure in the user's manual.

1.5.2 Cooling

Intercooling is based on a raw water pump, heat exchanger and
water-injected exhaust. Cooling liquid in the internal cooling
system is cooled in a heat exchanger by outboard water (raw
water or seawater). After the raw water is warmed up in the heat
exchanger it is dumped overboard by injecting it in the exhaust.
M-SQ PRO 15/18 kVA
The generating set should have its own sea water (coolant water)
inlet and should not be connected to any other engine systems.
A properly installed cooling system is critical to keep engine tem-
peratures within an acceptable range. Ensure that the installation
complies with the following installation instructions.
1 THE INTERNAL COOLING SYSTEM
The internal cooling system should be filled with cooling liquid.
(Refer to the user's manual 2.5.13) When the engine becomes
hot the liquid expands and the system is pressurized. After the
pressure becomes too high the release valve in the filling cap on
the manifold opens and the expanding liquid is pressed into the
expansion tank that is in the delivery. Also the air in the system
that is collected at the top of the manifold is released in this way.
When the liquid cools down there will be under-pressure. Anoth-
er valve opens and the liquid is sucked into the manifold again.
This system works only when there is enough liquid initially. This
has to be checked when commissioning the generator set. By
filling up the expansion tank when necessary there will always be
enough liquid in the system. The hose that is in the delivery has
to be connected to the connection on the side of the filling cap.
This hose is made of heat resistant plastic and is not sensitive for
kinks.
The hose goes through a hole in the canopy
Fig. 5: Expansion tank placement
Marine Diesel Generator 7