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July 21, 2012
is shut off. When the ignition switches are turned of they release a magneto ( magnetic
switch) which closes off the fuel supply which in turn kills the engines.
If engines have been off for over 8 hours, make sure they run for at least 5 minutes and
that the temperature gauges show at least 140 before going over 1000 RPM. Running
underway with cold engines can more than double fuel consumption and can cause
engine failure.
Make sure engine power levers are in neutral before
starting.
Note: Engines will not start while if power levers
are in gear!
Turn on ignition key(s).
A .
ALARMS:
Loud buzzing alarms will sound when the keys are turned on : this is normal, these
alarms indicate that the alarm system is working . They are monitoring low oil
pressure at this point. You should hear these whenever the key is turned on and for
the first 5 seconds or so when the engines first start running.
They will also sound when the engines are running if coolant temperature exceeds
a safe operating temperature, and the alarms receive signals from one of several
sensors at different locations on the engine.
If you hear these alarms when the engine is running beyond the first several seconds
or underway, there is probably an emergency situation and the engines should be
dropped to an idle for 10 to 15 seconds while you observe the dash gauges for oil
pressure and temperature condition. If you observe low oil pressure, shut down the
affected engine immediately.
If you observe excessive temperature, first allow the engines to idle for around 10
seconds, if the alarm stops or if the temperature is dropping, continue running until
the alarm stops.. A slow drop usually indicates a blockage of the water intake or if
the alarms occur only at higher cruising speed it could also indicate an excessive
load on the propeller.
If however, no temperature progress is observed, you need to shut down the engine
as the alarm could be coming from one of several engine conditions, such as
failure of a water pump or belt, failed impellor in the pump, an extremely low oil
condition or other problems.
If this occurs you need investigate the possible conditions and call AYC and or the
Owner for instructions, prior to restarting the engine.
