Woodward TG-10E, Installation And Operation Manual

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TG-10E/-13E/-17E Actuator Manual 04045
14 Woodward
Chapter 4.
Operation and Adjustments
Introduction
This chapter provides initial installation, adjustment, and operating instructions of
the TG actuator.
WARNING—OVERSPEED PROTECTION
The engine, turbine, or other type of prime mover should be equipped with
an overspeed shutdown device to protect against runaway or damage to the
prime mover with possible personal injury, loss of life, or property damage.
The overspeed shutdown device must be totally independent of the prime
mover control system. An overtemperature or overpressure shutdown
device may also be needed for safety, as appropriate.
Initial Operation
Before initial operation of the TG equipped turbine, make sure that all previous
installation steps have been correctly accomplished and that all linkages are
secure and properly attached. See Chapter 3, Installation. Also, read all of this
chapter.
WARNING—START-UP
Be prepared to make an emergency shutdown when starting the engine,
turbine, or other type of prime mover, to protect against runaway or
overspeed with possible personal injury, loss of life, or property damage.
Follow the turbine manufacturer’s instructions to start the turbine.
Normally, the only requirements for putting a new or overhauled TG actuator into
service are to fill the actuator with oil (see Chapter 3, Oil Supply) and adjust the
selected speed setting on the electronic speed control. Select a low-speed
setting on the electronic control to give low turbine speed at initial start-up.
Maximum terminal shaft travel is 30 degrees for the TG-10E and 40 degrees for
the TG-13E/-17E. Adjust the steam linkage so that terminal shaft travel from “NO
LOAD” to “FULL LOAD” is 2/3 of maximum shaft travel (see Figure 3-1).
WARNING—OVERTRAVEL
Be sure to allow sufficient overtravel at each end of the terminal shaft so the
actuator can shut down the turbine and also give maximum steam flow
when required.
Open the steam valve slowly. Check the turbine speed and adjust as necessary
to bring the turbine to rated speed.