GEM 549 eSyDrive, Operating Instructions Manual

Page: 41 / 47

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16.3 Replacing the seals
1. Remove the actuator (see “Removing the actuator“,
page 40).
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. Insert 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 .
Mount the actuator (see “Mounting the actuator“, page 41).
16.4 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.
Rxxxx
Rxxxx
Valve body marking 2/2-way body
Valve body marking:
Angle valve body
Actuator product label Valve body marking
RAxxx R002
RBxxx R004
RCxxx R006
RDxxx R008
RExxx R010
RFxxx R012
RGxxx R015
RHxxx R020
RJxxx R025
RKxxx R032
RMxxx R040
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 Torque
DN 10 90 Nm
DN 15 90 Nm
DN 20 100 Nm
DN 25 120 Nm
DN 32 120 Nm
DN 40 150 Nm
DN 50 200 Nm
DN 65 260 Nm
DN 80 280 Nm
5. Move the actuator A to the closed position.
6. With the valve fully assembled, check the function and
tightness.
16 Inspection and maintenance