Mounting The Full Bore Diaphragm; Mounting The Actuator - Gemü 656 Betriebsanleitung

DN 300:
Compressor and actuator flange seen from below:

15.3.2 Mounting the full bore diaphragm

Important:
▶ Mount the correct diaphragm that suits the valve (suit-
able for medium, medium concentration, temperature
and pressure).
1. Before mounting the new diaphragm, please remove the
actuator as described in chapter "Removing the dia-
phragm".
2. Close actuator A by approx. 75%.
3. Screw the diaphragm pin of the new diaphragm into the
compressor of the actuator manually. When clear resist-
ance is felt turn back the diaphragm anticlockwise until
its bolt holes are in correct alignment with the bolt holes
of the actuator.

15.4 Mounting the actuator

Diaphragms set in the course of time.
▶ Leakage
After disassembly/assembly of the product, check that
●
the bolts and nuts on the body are tight and retighten if
required.
Retighten the bolts and nuts at the very latest after the
●
first sterilization process.
1. Move the actuator A to the open position.
2. Position actuator A with the mounted diaphragm on the
valve body 1.
3. Screw in bolts, washers and nuts hand tight.
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NOTICE
NOTICE
ð Fastening elements may vary depending on the dia-
phragm size and/or valve body version.
4. Move the actuator A to the closed position.
5. Open actuator A approx. 20%.
6. Fully tighten the bolts with nuts diagonally.
7. Ensure even compression of the diaphragm (approx. 10 to
15%).
ð Even compression is detected by an even outer bulge.
8. With the valve fully assembled, check the function and
tightness.
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15 Inspection and maintenance
GEMÜ 656