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GEMÜ 567 servoDrive
15 Inspection/maintenance
15.4.2 Mounting the plug diaphragm
8
6
11
2
1. Screw the plug diaphragm
2
to the valve spindle
6
and
hand-tighten it.
2. Place the distance piece
11
onto the valve body
1
.
3. Place washers
17
and cap nuts
18
on stud bolts
16
and
position by hand.
4. Tighten cap nuts
18
diagonally (tightening torque: 16–
20 Nm).
15.5 Replacing the bypass valve actuator
15.5.1 Removing the actuator
1. Move the actuator to the open position.
2. Loosen fastening elements between the valve body and
the actuator diagonally and remove them.
3. Remove the actuator from the valve body.
4. Move the actuator to the closed position.
NOTICE
Important:
▶
After disassembly, clean all parts of contamination. Take
care not to damage the parts in the process. Afterwards,
check parts for potential damage. If parts are damaged,
replace them.
15.5.2 Removing the diaphragm
NOTICE
▶
Before removing the diaphragm, remove the actuator, see
previous chapter "Removing the actuator").
1. Pull out the diaphragm (diaphragm size 8).
NOTICE
Important:
▶
After disassembly, clean all parts of contamination. Take
care not to damage the parts in the process. Afterwards,
check parts for potential damage. If parts are damaged,
replace them.
2. Use only genuine parts from GEMÜ.
15.5.3 Mounting the diaphragm
NOTICE
▶
Important:
Mount the correct diaphragm that suits the
valve (suitable for medium, medium concentration, tem-
perature and pressure). The diaphragm is a wearing part.
Check the technical condition and function of the dia-
phragm valve before commissioning and during the
whole term of use. Carry out checks regularly and determ-
ine the check intervals in accordance with the conditions
of use and/or the regulatory codes and provisions applic-
able for this application.
NOTICE
▶
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.
Diaphragm size 8:
Compressor and actuator flange seen from below:
Push-fit diaphragm:
1
2
2
Item
Name
1
Recess of compressor
2
Diaphragm tab
