Whisper Power M-SQ27 User Manual page 23

4 Power source
power/generator power). Switch to power source
generator. If a WhisperSwitch is installed, this operates
automatically.
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 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.
selector switch (off/shore Stopping the generating set:
1 Avoid stopping of the generator abruptly after a long
period of operation at high load! Doing so, you avoid
unnecessary thermal load to your generating set!
Act as follows:
Prior to switching off the generating set, decrease the
generator load (i.e. turn off most electrical users) and
let the generator run at low load for approx. 5 minutes
to allow the engine to get properly cool (the influent sea
water must flow through the system in order to cool the
engine).
If the generator is operating in a hot environment and
you do not act as given above, the excessive heat in
the engine can trip the "high temp" alarms. In that case,
a restart of the engine is not possible for some time. It
is also recommended to switch off electrical users prior
to stopping the generator because of the voltage drop
that occurs as the engine comes to a halt. Such voltage
drops may cause damage to electric motors,
compressors (in refrigerators or air conditioners etc.).
2 Press the STOP button.
3 Close the inlet sea water cock.
4 Switch to another 230V/400V power source, if
available. If a WhisperSwitch is installed, this is done
automatically.
If the engine is not running and 'failure' and
'charging' LED is blinking, reset by stop button,
otherwise it will drain the start battery.