Gemü 611 Montageanleitung Seite 27

Important:
If the diaphragm is not screwed
into the adapter far enough, the
closing force is transmitted directly
onto the diaphragm pin and not
via the compressor. This will cause
damage and early failure of the
diaphragm and thus leakage of the
valve. If the diaphragm is screwed
in too far no perfect sealing at the
valve seat will be achieved and the
function of the valve is no longer
ensured.
Important:
Incorrectly mounted diaphragm
may cause valve leakage /
emission of medium. In this case
remove the diaphragm, check the
complete valve and diaphragm and
reassemble again proceeding as
described above.
GEMÜ 611:
The compressor is fixed to the spindle.
Compressor and bonnet flange seen from
below:
GEMÜ 671:
The compressor is loose for all bonnet sizes.
The diaphragm size 100 (DN 100) is round.
Compressor and bonnet flange seen from
below:
D
Compressor - view from diaphragm side
C
Compressor - view from bonnet side
D
Key
A Grooved pin (anti-twist system)
B Recesses on the compressor
C Grooves at the bonnet bottom
D Wings of the compressor
Anti-twist system of the spindle at the
compressor
A grooved pin A at the end of the spindle
serves as an anti-twist system for the bonnet
spindle. When mounting the compressor the
grooved pin A must be in correct alignment
with the recesses B on the compressor.
If the bonnet spindle is not in the correct
position, use the handwheel to turn it to the
27 / 36
D
A
C
A
B
D
B
611, 671