Burkert Type 3236 - Manual (Page 37)

37
Repairs
Type 2035 / 3236
test for leak-tightness / valve function
Warning!
danger of injury through egress of flow medium.
▶ Tighten the body screws / nuts sufficiently.
Applying an unnecessary degree of force to tighten the
body screws / nuts leads to increased wear and therefore
shortens the service life of the diaphragm.
If the valve leaks when the medium pressure rises:
→
Tighten the diagonally opposed body screws / nuts by a one-
eighth turn until the valve no longer leaks.
This procedure ensures that the diaphragm and the pressure pieces
are optimally aligned to each other and the valve function is ensured.
→
Switch the valve several times and if necessary tighten the body
screws / nuts more.
13.2.4. rV110 actuator
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 body.
The actuator contains tensioned springs. If the actuator body is
opened, injuries may be caused by the springs jumping out.
▶ The actuator body must not be opened.
disassembly of the actuator and diaphragm
→
Mark the position of the actuator in relation to the valve body.
→
Move the actuator to the upper actuator position (CFA, NC: by
applying pilot pressure; CFB, NO, NO: by removing the pilot
pressure).
→
Unscrew the four body screws / nuts that connect the valve body
with the actuator. Remove the valve body
1 .
→
Loosen and remove the guide bolt 2 .
→
Turn the diaphragm and pressure pieces through 45° 3 and
take them out 4 .
→
Take the diaphragm out of the pressure pieces sideways 5 .
english