ARI Armaturen DP34 EN - Manual (Page 22)

Page 22 0040504000 1210
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 5.5 and 5.6.
9.1.2 Replacement by operation mode "actuator stem retracts by spring force"
- Take off diaphragm cover (pos. 18) and take out the unit assembly group rolling
diaphragm (pos. 10), diaphragm plate (pos. 11), stem (pos. 1) and the compression
springs (pos. 15).
DP32, DP33:
- Place the diaphragm plate (pos. 11) with rolling diaphragm (pos. 10) into the diaphragm
cover (pos. 18).
- Arrange the compression springs (pos. 15) onto the moulds pressed into the diaphragm
plate (pos. 11).
- Make sure the compression springs stay properly arranged! (Fig. 23)
- Mount diaphragm base (pos. 7) with stem guiding unit (pos. 3) over the stem (pos. 1) and
screw together. (Observe the tightening torques of the flange nuts, see point 8.1)
DP34:
- Place rolling diaphragm (pos. 10) with diaphragm plate (pos. 11) and spring positioner
(pos. 16) into the diaphragm cover (pos. 18).
- Align the compression springs (pos. 15) onto the spring positioner (pos. 16) into the
diaphragm plate (pos. 11) and place the second spring positioner (pos. 16) onto the
compression springs (pos. 15).
- Make sure the compression springs are positioned properly (Fig. 26)! Centre the
compression springs (pos. 15) so, that over one of the draughts of the spring positioner
(pos. 16), the ventilation in the diaphragm base (pos. 7) is aligned.
- Mount diaphragm base (pos. 7) with stem guiding unit (pos. 3) over the stem (pos. 1) and
screw together. (Observe the tightening torques of the screws, see point 8.1)
Fig. 25
ATTENTION !
- Use the longer screws to mount the long compression springs! Tighten the
screws equally!
Ventilation
Air connection
Name plate