Burkert Type 3236 - Manual (Page 35)

35
Repairs
Type 2035 / 3236
13.2.3. rV50 and rV70 pneumatic actuation
Warning!
danger of injury due to flow medium, operating pressure and
movable parts.
▶ Before disassembly, make sure that the valve is not under pressure
and completely drained.
▶ Wear protective clothing.
risk of injury when opening the actuator.
The actuator contains tensioned springs. If the actuator is opened,
injuries may be caused by the springs jumping out.
▶ The actuator must not be opened.
disassembly of the actuator and diaphragm
→
Move the actuator to the upper actuator position (CFA, NC, NC: by
applying pilot pressure; CFB, NO: by removing the pilot pressure).
→
Mark the position of the actuator in relation to the valve body.
→
Unscrew the four body screws / nuts that connect the valve body
with the actuator. Remove the valve body
1 .
→
Remove the covers (for RV50 with PP cover: muffler and screw) 2 .
→
Loosen the setscrew on the pressure pieces 3 .
→
At the diaphragm, take the pressure pieces out of the actuator
downwards
4 .
→
Take the diaphragm out of the pressure pieces sideways 5 .
Body screws Pressure pieces Diaphragm
1
2
4
5
Setscrew
3
Fig. 30: Disassembly of the RV50, RV70 pneumatic actuators
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