Cooling - Mastervolt WHISPER 3,5 Installation Manual

1.4.2

Cooling

Intercooling is based on a raw water pump, heat
exchanger and water-injected exhaust.
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 temperatures within an acceptable
range. Ensure that the installation complies with the
following installation instructions.
Fig. 4.
1 RAW WATER SUPPLY
For raw water supply the following installation
materials are required: -a skin fitting - a sea cock - a
water strainer - hoses and clamps. In order to keep
the suction resistance in the line at a minimum, the
sea water intake system (i.e. sea cock, tru-hull fitting,
inlet filter, etc.) must have an inner diameter of at
least 12.5 mm diameter ( 1/2"). The suction hose
should be kept as short as possible. Raw water
plumbing should avoid bends as much as possible.
Restriction of raw water flow, caused by kinked hoses,
undersized pipes or connections, will reduce the
engine cooling capability. This is the main cause for
overheating of an engine.
After running the generating set for the first time,
check the coolant flow rate using a stopwatch and by
holding a pail of a known volume under the wet-
exhaust outlet. The flow rate should be 8 to 12 litres
/min.
EN / WHISPER 3,5 / October 2004
1 Water level
2 Water/exhaust separator
3 Seacock
4 Waterlock
max.
120 cm
5 Air vent;
6 Water strainer;
7 Seacock.
INSTALLATION
min.
60 cm
7