ITT B216, Инструкция по установке и эксплуатации

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If you have a series 47 actuator, then follow the steps below:
1. Remove the switch package, if present.
2. Remove the clear plastic cap.
3. Using air pressure and a bleed type regulator, open the valve to desired position.
4. Rotate the adjusting bushing counterclockwise until resistance is felt. Count and record the num-
ber of turns.
5. Loosen the two jam nuts and turn the lower nut clockwise the same number of turns as recorded
above.
6. Lock the nuts together.
7. Remove the switch package, if present.
8. Using air pressure and a bleed type regulator, open the valve to the desired position.
9. Rotate the adjusting bushing counterclockwise until resistance is felt. The opening stop is now
set.
10. Adjust the valve closed switch.
11. Replace the clear plastic cap.
4.9 Disassemble the valve
1. Remove all line pressure.
2. If the actuator mode of operation is fail open or fail close, then load the actuator with air.
If the actuator mode of operation is ... Then ...
Fail open Load the actuator with sufficient air to partially close the valve.
Fail close Load the actuator with sufficient air to partially open the valve.
3. Remove the bonnet fasteners.
4. Lift the topworks assembly from the valve body.
5. If the actuator mode of operation is fail open, then remove pressure load from the actuator.
4.10 Replace the valve diaphragm
1. Disassemble the valve.
For more information, see
4.9 Disassemble the valve on page 12 .
2. Unscrew the diaphragm from the compressor by turning the diaphragm counterclockwise.
The replacement diaphragm should be identical in size and grade to the original diaphragm.
3. If replacing a PTFE diaphragm, then follow these steps.
a) Install the new elastomer backing cushion over the tube nut.
b) Invert the PTFE diaphragm by pressing the center of the diaphragm face with your thumbs
while holding the edge of the diaphragm with your fingers.
4.9 Disassemble the valve
12 Advantage® 2.1 Actuator Installation and Operation Manual