GE FVP110, Maintenance Manual

Page: 267 / 292

251
E
Position Adjustment of
Feedback Lever
For Single Acting Type, you can adjust the feedback lever position while air is being
supplied to the actuator.
This procedure requires supplying air to the actuator. Piping must be
carried out following the instructions shown in “Wiring and Piping”.
1. Using a flat-head screwdriver, turn the FVP110 A/M selector switch clockwise to change
the selector position to
M
(manual). Be sure to turn the switch until it stops.
Changing the A/M selector switch position to M (manual) causes air at
the pressure setting of the pressure regulator for air supply to be supplied
to the valve actuator regardless of the input signal. Therefore, prior to
switching to manual mode, make sure that doing so neither causes an
injury nor affect the process.
2. Supply air to the valve actuator. This causes the valve stem to move; be extremely
careful about safety. Adjust the pressure regulator to set the stroke of the stem to 50%.
Do not supply air at a pressure exceeding the maximum rated air supply
pressure of the actuator or the FVP110 (400 kPa). Doing so can result in
a high risk of damage to the equipment or lead to an accident.
3. Check that the feedback lever is around the horizontal level (Figure 84). If its incline
deviates from the horizontal level by 15° or more, shut off the air supply for safety. Then,
after confirming that the air has been completely exhausted out of the actuator, readjust
the clamp position.
4. Shut off the air supply and turn the A/M selector switch counterclockwise until it stops, to
change the selector position to A (automatic).
WARNING
WARNING
WARNING