OPERATION
US / WHISPER 15 ULTRA - Three Phase / December 2008 / Copyright © 2008 Mastervolt 23
2 Check sea water cocks. Do not forget the valve of the
water outlet in case of a water/exhaust gas separator.
3 Check the water strainer.
4 Check for leaks.
5 Regularly check the siphon vent in the cooling water
supply.
6 Switch main Power Source Selector switch to "OFF"
or switch off all devices.
7 Switch on the battery switch.
Starting the generator:
By pushing the start button briefly the electric system
is activated, the fuel lift pump starts pumping and the
starting procedure will begin (by pushing the Stop
button the system is deactivated).
The first time starting up or after running out of fuel it
could be necessary to prime the fuel system. (Refer to
bleeding fuel system instructions in the maintenance
chapter).
A restart protection prevents starting the engine when it is
already running, which could cause damage.
In the event of starting problems (numerous
attempts are made), close the sea-water inlet
cock while cranking to prevent the outlet
system and engine to fill up with water.
During the starting process, the cooling water pump is
driven with the engine. The cooling water is discharged to
the exhaust outlet, because the engine does not run, the
exhaust pressure is not high enough to expel this water.
Open the valve directly when the engine starts to prevent
damaging the impeller.
Water in the cylinder will cause serious damage to the
engine. For instance; a bent piston rod or a cracked
cylinder head. In fact water in the cylinder is the main
cause for engine damage in pleasure craft.
Checks once the generator is in operation:
1 Check for abnormal noise or vibration.
2 Check the voltage.
3 Check coolant flow.
Always check immediately after starting the generator
if cooling water flows at the exhaust outlet. If this is
not the case, check the cooling water pump. After
having become acquainted with the generator you will
be able to recognise the coolant flowing through the
system by listening for the noise of the water which is
expelled.
Be aware that especially in harbours the
coolant water inlet can easily be blocked by
floating objects.
4 Power source selector switch (off/shore
power/generator power). Switch to power source
generator.
Before loading the generating set up to maximum,
have it run warm. The first 50 hours of running the
continuous load should be restricted to 70 % of maxi-
mum load. Running for long periods at no load or light
load in the first 50 hours can cause cylinder glazing
and high oil consumption.
Engine load during longer operation:
Please ensure that the generating set is not overloaded.
Overloading occurs when the electrical load (demand) is
so high that the generator cannot be turned around
properly by the diesel engine. Overloading causes the
engine to run rough, while using oil and excessive fuel and
producing soot by the exhaust. The engine can even stop.
The generator should therefore only be loaded at the
maximum rated power for short periods (2-3 hours) only!
The high peak current is meant for the ability to start
electrical devices that need a high current for starting
especially electric motors and compressors (from a still
stand state).
In order to prolong the generating set’s life expectancy, the
nominal electrical demand on the system should be about
70% or the rated generating set’s maximum load. Please
note this when switching on your electrical devices!
Nevertheless, the Whisper 15 ULTRA Three Phase is
designed so as not to overheat, even under extreme
conditions.
Do not run the generator for very long periods at no load
or at very low load. When this is necessary do load the
generator at least one hour in 10 hours for minimum 70%.
Long term running at too low load will cause the exhaust to
be choked by carbon.
Never remove the battery while the engine is
running or any electrical cable while the
battery is connected in the circuit. Only
disconnect the battery with the engine
stopped and all switches in "OFF" position
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