Parallel operation elements
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53
Marine Diesel gensets. O
perator’s Manual.
Adjustments before engine startup
Start the engine
The speed ECU setting is factory set at approximately engine nominal speed. If the engine
does not start, adjustment of the Speed potentiometer may be required.
Crank the engine with DC power applied to the governor system. The actuator will energize to
the maximum fuel position until the engine starts. The governor system should control the engine at a
low idle speed. If the engine is unstable after starting, refer to Section 8 ADJUSTING FOR STABILITY.
Governor speed setting: The governed speed set point is increased by clockwise rotation of the SPEED
adjustment control. Remote speed adjustment can be obtained with an optional 5K Speed Trim
Control.
.
To do the stability adjustment, do the follow steps with the engine running:
•
Turn the GAIN potentiometer clockwise until the engine becomes unstable. Then, turn it slowly
counterclockwise until it stabilizes. Turn it about 1/8 more turn counterclockwise to ensure
stability.
•
Turn the STABILITY knob clockwise until the engine becomes unstable. Then, turn it slowly
counterclockwise until it stabilizes again. Turn it about 1/8 more turn counterclockwise to
ensure stability.
•
Apply load to the engine and if any instability is observed, try to correct it by turning the GAIN
and STABILITY potentiometers slightly counterclockwise.
COMPONENT
POSITION
GAIN
Middle position
STABILITY
Middle position
SPEED TRIM CONTROL
Middle position
STARTING FUEL
Full CW (Maximum fuel)
SPEED RAMPING
Full CCW (Fastest)
