Woodward 8290-189-EPG-installation-manual 8290-044

fuel position. Verify that linkage travel is limited by the prime mover’s fuel

control, not by the actuator stop.

Preset Rated Speed:

Set the signal generator for MPU frequency at rated speed and connect it to

terminals 5 and 6. Put the idle-rated switch in the rated position. Set the

speed trim pot, if connected, to mid-position. Observe the linkage position.

If the linkage Is at the maximum fuel position:

Slowly turn the rated speed pot counterclockwise until the linkage just

begins to move to the minimum fuel position. Start Fuel (if present) must be

adjusted to the maximum clockwise position or the actuator will not move to

maximum.

If the linkage Is at the minimum fuel position:

Slowly turn the rated speed pot clockwise until the linkage just begins to

move to the maximum fuel position.

Continue to adjust the rated speed pot very slowly in the appropriate

direction, trying to stop the linkage between the minimum and maximum fuel

stops. Because it is not possible to stop the motion, cease adjusting when

the linkage moves slowly. The rated speed reference is now set very close

to desired speed. A slight adjustment when the engine is running will

achieve the exact speed.

Preset Idle Speed:

Preset idle speed only after presetting rated speed. Set the signal generator

for the MPU frequency at idle speed. Put the idle-rated switch in the idle

pos