Replacing The Seals; Mounting The Actuator - GEM 533 eSyStep Operating Instructions Manual

14 Inspection and maintenance

14.3 Replacing the seals

1. Remove the actuator.
2. Remove sealing washer 4 from the valve body.
3. Loosen nut e on spindle b (hold spindle b with appropriate
tool that will not damage the spindle surfaces).
4. Clean all parts of contamination (do not damage parts dur-
ing cleaning).
5. Insert new seat seal 14.
6. Remove retaining washer d.
7. Apply appropriate thread locking compound on the thread
of spindle b.
8. Fix spindle b in place with nut e (hold spindle b in place
with appropriate tools which do not damage the spindle
surfaces).
9. Insert new sealing washer 4 in valve body 1.
10. Mount the actuator.

14.4 Mounting the actuator

NOTICE
Important:
▶ Clean all parts of contamination (do not damage the
parts during cleaning) following removal. Check parts for
potential damage; replace if necessary (only use genuine
parts from GEMÜ).
CAUTION
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 combination
of actuator and valve body is correct.
Compare the product label of the actu-
●
ator with the valve body marking.
RXXX
Valve body marking
Actuator product label
RAxxx
RBxxx
RCxxx
RDxxx
RExxx
GEMÜ 533 eSyStep
Positioner (Code S0)
Valve body marking
R002
R004
R006
R008
R010
56 / 64
Actuator product label
RFxxx
RGxxx
RHxxx
RJxxx
RKxxx
RMxxx
1. Move the actuator A to the open position.
2. Lubricate the thread of the union nut a using a suitable
lubricant.
3. Place actuator A on valve body 1 approx. 90° in front of
the end position (orientation of the connections) and
screw hand tight with union nut a.
4. Tighten union nut a with an open-end wrench (for torques,
see table ).
ð This rotates the actuator clockwise approx. 90° to the
desired position.
Nominal size
DN 15
DN 20
DN 25
DN 32
DN 40
DN 50
5. Move the actuator A to the closed position.
6. With the valve fully assembled, check the function and
tightness.
7. Carry out initialisation.
Valve body marking
R012
R015
R020
R025
R032
R040
Torque
90 Nm
100 Nm
120 Nm
120 Nm
150 Nm
200 Nm
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