12.3.2 Mounting A Concave Diaphragm; Actuator Mounting On The Valve Body - Gemü 610 Einbau- Und Montageanleitung

The compressor is loose.
Compressor and actuator fl ange seen from
below:
Compressor - view from diaphragm side
Compressor control function NO and DA
Place the compressor loosely on the
G
actuator spindle, fi t the wings into the
guides (arrows).

12.3.2 Mounting a concave diaphragm

Recess of compressor
Diaphragm boss
1. Move actuator A to the closed position.
2. Place the compressor loosely on the
actuator spindle, fi t the wings into the
guides (see chapter 12.3.1 "General
610
3. Check if the compressor fi ts closely in
4. Screw new diaphragm tightly into the
5. Check if the diaphragm boss fi ts closely
6. If it is diffi cult to screw it in, check the
7. When clear resistance is felt turn back
Anti-twist
system
12.4
1. Move actuator A to the open position.
2. Position actuator A with the mounted
3. Insert and tighten the bolts 18,
Pin
Pin
4. Move actuator A to the closed position.
5. Fully tighten the nuts 20 diagonally.
6. Put on the caps 22 and 23 again.
7. Ensure that the diaphragm 2 is
8. Check tightness of completely
Diaphragm pin
28 / 36
information"). Control function NO and
DA: ensure that the pins are engaged in
the anti-twist system.
the guides.
compressor manually.
in the recess of the compressor.
thread, replace damaged parts (only use
genuine parts from GEMÜ).
the diaphragm until its bolt holes are in
correct alignment with the bolt holes of
the actuator.
Actuator mounting
on the valve body
diaphragm 2 on the valve body 1,
aligning the diaphragm weir and valve
body weir.
washers 19 and nuts 20 by hand
(hand tight only).
compressed evenly (approx. 10-15 %,
visible by an even bulge to the outside).
assembled valve.
Important:
Diaphragms degrade in the course
of time. After valve installation
and commissioning you must
retighten the nuts 20 (see chapter
20 "Sectional drawing and spare
parts").