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GEMÜ 8253
11.4 Armature replacement
WARNING
Danger from medium spurting out!
▶
Danger of injury.
●
Servicing work on the solenoid valve
should only be carried out after the pip-
ing has been depressurized and
drained!
*702
*705
*704
706
701
7
400
Fig. 6: Armature replacement
1. Release the pressure from the solenoid valve and from the
piping and drain off.
2. Disconnect the solenoid coil from power supply.
3. Disengage the spring clip
706
and pull the solenoid coil
400
off the bush
701
.
4. Unscrew the bush
701
with threaded insert
7
(SW 22) and
remove it.
5. Take O-ring
*702
out of groove.
6. Replace O-ring
*702
, compression spring
*704
and arma-
ture
*705
.
7. Screw in bush
7
with threaded insert (20 Nm ± 10 %).
8. Place the solenoid coil on the bush and engage the spring
clip.
11.5 Diaphragm replacement
WARNING
Danger from medium spurting out!
▶
Danger of injury.
●
Servicing work on the solenoid valve
should only be carried out after the pip-
ing has been depressurized and
drained!
*103
*105
102
104
706
400
Fig. 7: Diaphragm replacement
1. Release the pressure from the solenoid valve and from the
piping and drain off.
2. Disconnect the solenoid coil
400
from power supply.
3. Disengage the spring clip
706
and pull the solenoid coil
400
off the bush.
4. Remove cover screws
104
and remove valve cover
102
.
5. Replace diaphragm *
103
and compression spring
*105
.
6. Place the valve cover on the valve body and tighten with
the cover screws diagonally.
Tightening torque for the cover screws:
Thread
Torque
M4
2.0 Nm ± 10 %
M5
3.6 Nm ± 10 %
M6
6.0 Nm ± 10 %
M8
16.0 Nm ± 10 %
M10
31.0 Nm ± 10 %
11 Inspection and maintenance
