Replacing The Seals; Mounting The Actuator - GEM 532Z Operating Instructions Manual

15.3 Replacing the seals

Gasket!
Replace gasket 4 each time the actuator is disas-
●
sembled/assembled.
1. Remove actuator A (see chapter "Removing the actu-
ator").
2. Heat retaining washer d to 150 °C.
▶ Heating makes the thread locking compound easier to
remove.
3. Unscrew retaining washer d using an appropriate tool.
4. Remove seat seal 14.
5. Clean all parts of contamination (do not damage parts
during cleaning).
6. Place new seat seal 14 in valve plug c.
7. Apply appropriate thread locking compound to the thread
of valve plug c.
8. Position retaining washer d on spindle b (hold spindle b
with appropriate tool that will not damage the spindle
surfaces) and tighten.
9. Insert new sealing washer 4 in valve body 1.
10. Mount actuator A (see chapter "Mounting the actuator").

15.4 Mounting the actuator

Incorrect combination of actuator and
valve body!
▶ Risk of damage to the actuator and
valve body.
For control valves with a reduced
●
valve seat, make sure that the com-
bination of actuator and valve body is
correct.
Compare the product label of the actu-
●
ator with the valve body marking.
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NOTICE
NOTICE
CAUTION
Valve body marking
Fig. 5: Valve body marking
1. Move the actuator A to the open position.
2. The actuator can be rotated 360°. The control medium
connectors can be in any position.
3. Lubricate the thread of union nut a using a suitable lub-
ricant.
4. Place actuator A on valve body 1 approx. 90° anticlock-
wise to the end position of the control medium connect-
ors and screw it in hand tight using union nut a.
5. Tighten union nut a with an open-end wrench (for
torques, see table). This rotates actuator A clockwise ap-
prox. 90° to the desired position.
6. Move the actuator A to the closed position.
7. With the valve fully assembled, check the function and
tightness.
Actuator product label
RAxxx
RBxxx
RCxxx
RDxxx
RExxx
RFxxx
RGxxx
RHxxx
RJxxx
RKxxx
RMxxx
Nominal size
DN 15
DN 20
DN 25
DN 32
DN 40
DN 50
23 / 28
15 Inspection and maintenance
RXXX
Valve body marking
R002
R004
R006
R008
R010
R012
R015
R020
R025
R032
R040
Torques [Nm]
90
100
120
120
150
200
GEMÜ 532Z