Mounting A Concave Diaphragm - Gemü 625 Original Einbau- Und Montageanleitung

The compressor is loose.
Compressor and actuator flange seen from
below:
Picture 1
B
D
Picture 2
C
45°
A
A double flat A (arrows picture 2) at the
end of the actuator spindle serves as an
anti-twist system of the actuator piston.
When mounting the compressor, the double
flat A must be in correct alignment with the
recess B of the compressor back (arrows
picture 1).
If the actuator piston is not in the correct
position, it must be turned to the correct
position. The position of the double flat A is
offset by 45° to the position of C.
Place the compressor loosely on the
actuator piston, fit the recesses D into the
guides C and A into B. The compressor
must be able to be moved freely between
the guides!
D
B
A
C
31 / 40
11.3.2 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 grooves into the
guides (see chapter 11.3.1 "General
information"). Ensure that the anti-twist
protection is engaged.
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.
Diaphragm pin
625