ARI Armaturen DP34 EN - Manual (Page 23)

0040504000 1210 Page 23
Operating and installation instructions
Pneumatic actuators - DP32 / DP33 / DP34
- Change spring range on name plate or fix a new name plate.
- Mounting of actuator with valve and adjustment of the starting pressure signal as
described under point 5.7 and 5.8.
9.2 Change of operating mode
The actuator operating mode can be reversed even when the valve is installed in the piping.
No special equipment is required.
- Remove the actuator unit from the valve, as described in point 7.0, and disassemble.
9.2.1 Change of operating mode "actuator stem extends by spring force" in
"actuator stem retracts by spring force"
For diagrams refer to point 4.3
DP32, DP33, DP34:
- Take off diaphragm cover (pos. 18) and take out the compression springs (pos. 15) and
the unit assembly group rolling diaphragm (pos. 10) with diaphragm plate (pos. 11) and
stem (pos. 1).
DP32:
- Loosen flange nut (pos. 14) and remove diaphragm plate (pos. 11) with rolling diaphragm
(pos. 10), diaphragm flange (pos. 9) and bushing (pos. 8).
- Turn 180° and mount in this order over the stem (pos. 1): bushing (pos. 8), diaphragm
flange (pos. 9), rolling diaphragm (pos. 10), diaphragm plate (pos. 11).
- Tighten with flange nut (pos. 14).
(Observe the tightening torques of the screws, see point 8.1)
DP33, DP34:
- Loosen flange nut (pos. 14) and remove bushing (pos. 13), O-ring (pos. 12), diaphragm
plate (pos. 11) with rolling diaphragm (pos. 10) and diaphragm flange (pos. 9) and the
bushing (pos. 8).
- Turn bushing (pos. 13) and O-ring (pos. 12) 180° and mount in this order over the stem
(pos. 1). Then mount the bushing (pos. 8) over the stem (pos. 1).
Fig. 26
ATTENTION !
- Use the longer screws to mount the long compression springs! Tighten the
screws equally!
ATTENTION !
- Warning notes are to be observed see point 7.0!
Ventilation
Name plate
Air connection