18
April 2004 / WHISPER 20 ULTRA / USA
OPERATION
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 leakage’s.
5
Regularly check the siphon vent in the cooling water
supply.
6
If no MASTERSWITCH is used: Switch main Power
Source Selector switch to "OFF" or switch off all de-
vices.
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 for starting the engine while
already running which could cause damage.
In the event of starting problems (nume-
rous 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, since 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
for damaging the impeller.
Water in the cylinders will cause serious damage to the
engine. For instance; a bent piston rod or a cracked cylin-
der head. In fact water in the cylinders 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/gene-
rator power). Switch to power source generator. If a
MASTERSWITCH is installed, this is operating auto-
matically.
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 rum 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 expectance,
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 is designed so as not to
overheat, even under extreme conditions.
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.
Stopping the generating set:
1
Avoid stopping of the generator abruptly after a long
period of operation at high load! Doing so, you avoid
