Burkert Type 3236 - Manual (Page 36)

36
Repairs
Type 2035 / 3236
assembly of actuator and diaphragm
Caution!
danger of injury due to movable parts in the actuator.
▶ When applying or removing the pilot pressure on the actuator
keep members and other objects away from the actuator openings.
→
Insert the diaphragm into the T-guide of the pressure pieces 6 .
Make sure that the four spacing sleeves are installed 7
(RV70 only).
For easier assembly of the pressure pieces the actuator
spindles should be in the lower position (
Close) (CFA, NC:
by removing the pilot pressure; CFB, NO: by applying the
pilot pressure).
→
Insert the pressure pieces into the actuator 8 . Make sure that
the actuator spindles are fully inserted into the corresponding
recesses of the pressure pieces
9 .
→
Tighten the setscrews on the pressure pieces 10 .
→
Close the covers (for RV50 with PP cover: muffler and screw) 11 .
→
Move the actuator to the upper actuator position (CFA, NC: by
applying pilot pressure; CFB, NO: by removing the pilot pressure).
→
Put the actuator / diaphragm on the body with correct alignment
(so that the markings made previously align).
→
Tighten the diagonally opposed body screws / nuts until there
is visible, uniform mechanical contact between the valve body,
diaphragm and actuator
12 .
→
Tighten the diagonally opposed body screws / nuts twice with a
quarter turn and using the same torque in each case.
→
CFA, NC actuators: Remove the pilot pressure.
Body screws Pressure pieces
Diaphragm
12
11
8
6
Setscrew
10
Actuator spindles 9
Spacer sleeve
7
Fig. 31: Assembly of the RV50, RV70 pneumatic actuators
english