12.3.2 Mounting A Concave Diaphragm; Actuator Mounting On The Valve Body - Gemü R690 Original Einbau- Und Montageanleitung

The compressor is loose for all diaphragm
sizes.
Compressor and actuator flange seen from
below:
For diaphragm size 25 + 40: Place the
G
washer (arrow) loosely on the actuator
spindle.
Place the compressor loosely on the
G
washer, fi t the recesses into the guides
(arrows).
R690

12.3.2 Mounting a concave diaphragm

Recess of compressor
1. Move actuator A to the closed position.
2. For diaphragm size 25 + 40: Place
the washer loosely on the actuator
spindle. Place the compressor loosely
on the washer, fi t the recesses into the
guides (see chapter 12.3.1 "General
information").
3. Check if the compressor fi ts closely in
the guides.
4. Screw new diaphragm tightly into the
compressor manually.
5. Check if the diaphragm boss fi ts closely
in the recess of the compressor.
6. If it is diffi cult to screw it in, check the
thread, replace damaged parts (only use
genuine parts from GEMÜ).
7. When clear resistance is felt turn back
the diaphragm anticlockwise until its bolt
holes are in correct alignment with the
bolt holes of the actuator.
12.4 Actuator mounting on the
valve body
1. Move actuator A to the open position.
2. Position actuator A with the mounted
diaphragm 2 on the valve body 1, take
care to align the compressor weir and
valve body weir.
3. Insert and tighten the bolts 18 with
washers 19 by hand (hand tight only).
4. Move actuator A to the closed position.
5. Fully tighten the bolts 18 diagonally.
6. Put on the caps 39 again.
30 / 40
Diaphragm pin
Diaphragm boss