Woodward ProAct III, Инструкция по установке и эксплуатации

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Manual 04127 ProAct III/IV Actuator/Driver
Woodward 19
Chapter 4.
Troubleshooting
Introduction
Improper engine operation is often the result of factors other than governor
operation. This chapter gives tips about engine problems which can resemble
governor problems. Make sure the engine is operating correctly before making
any changes in the governor.
Attempting to correct engine or load problems with untimely governor adjustment
can make problems worse.
If possible, isolate the governor from the engine to determine if the problem is
with the governor and not with the engine or the load on the engine.
Governor faults are usually caused by problems in the installation or the linkage
between the actuator and the engine. Carefully review all the wiring connections,
the power supply, and the linkage before making any adjustments to the actuator
or driver. Always check the fuel-control linkage from stop to stop as if the
actuator were moving it. The linkage must move freely without friction and
without backlash. Some fuel controls will present problems at particular fuel or
rack positions because of a hesitation or binding in the linkage.
Fuel supply and injector conditions can also present problems which resemble
governor problems.
On spark-ignited engines, distributor, coil, points, and timing problems can all
cause improper operations which may resemble faulty governor control.
Linkage and Actuator Stroke
Use as much of the 75 degrees of actuator stroke as possible. Carefully follow
the guidelines in the Driver Adjustments section of Chapter 3 in making linkage
arrangements. Using less than optimum actuator movement will make stability
more difficult, and will make the actuator more sensitive to external loading
forces and friction.