Voith 91868550, Инструкция по эксплуатации и руководство пользователя

Страница: 19 / 27

Instruction and Operating Manual
Overspeed Protector CTO-B45202
2019 / 02
J.M. Voith SE & Co. KG │ Division Digital Ventures
Page: 19 / 25
918 3626018864 en D – 74564 Crailsheim Version: 2.1
Turning the T4-potentiometer will adjust the trip time, elapsing after releasing the "trip
simulation" pushbutton = partial stroke test - trip-stop valve (see Fig. 2, and for functional
description, see Chapter 3.49. Thus, the trip time is adjustable.
The temporary trip time is extended by turning the potentiometer clockwise.
The potentiometer is factory-set to the minimum possible trip time. Repeated pushing and
releasing the pushbutton "trip simulation" adjusts the potentiometer. The potentiometer is
adjusted in steps clockwise and the trip-stop valve is observed. The trip time is set correctly
when the trip-stop valve performs a little stroke towards the closing direction, but does not
yet have a negative influence on the turbine operation.
Doing so, it is possible to check the function of the overspeed protector and trip-stop valve
in intervals to be determined by pushing and releasing the "trip simulation" button during
turbine operation.
After adjustment of the temporary trip time, remount cover E and fix it using the 2 Allan
screws F. Observe that the O-ring is inserted in the cover, undamaged and greased. Lock
the 2 Allan screws using the circlips.