Replacement Of The Spare Parts Kit; Installation Of Actuator Top; Actuator Mounting On The Valve Body - Gemü 532 SKS Originalmontageanleitung

6.3 Replacement of the spare
parts kit
1. Remove actuator A (see chapter 5.1
"Disassembly of actuator from valve
body").
2. Disassemble the actuator top (see chapter
5.2 "Disassembly of actuator top").
3. Remove compression spring(s) 17, 18
and 34 from piston 20.
4. Remove O-ring 24 from piston sleeve 13.
5. Pull piston sleeve 13 out of actuator top 10.
6. Undo hexagon nut 11 on spindle 2 and
remove it (if necessary, hold spindle 2 in
place using an appropriate tool that will
not damage the spindle surface).
7. Remove piston 20 from spindle 2.
8. Remove the lip ring 21 from the
piston 20.
9. Remove O-ring 22 from piston 20.
10. Pull spindle subassembly 2 downwards
in the direction of the union nut a and
completely out of the actuator base 25.
11. Unscrew the seat fl ange 29 from the
union nut a.
12. Remove lip ring 26 from actuator
base 25.
13. Remove circlip 3 in actuator base 25
using an appropriate tool.
14. Pull out guide bush 5, compression
spring 6, pressure ring 9, chevron
packings 8 and 33 and support ring 7 from
the pipe in actuator base 25, in the order
listed here.
15. Lubricate new chevron packings using
appropriate lubricant* prior to installation.
* GEMÜ recommends the lubricant
"Dowcorning 111 Molycote".
16. Insert the new gland packing into the
pipe in the actuator base 25 in the
following order:
1. Support ring 7
2. Chevron packings 8 and 33
Arrange the sharp-edged
sides of chevron packings
8 and 33 in the direction
of the valve body, as it
will otherwise not be
possible to achieve sealing
tightness.
Layout of chevron packings:
• PTFE (not included with
actuator size 2)
• Elastomer
• PTFE
• Elastomer
• PTFE
3. Pressure ring 9
4. Compression spring 6
5. Guide bush 5
17. Lock the gland packing in place using
the circlip 3.
18. Insert the new lip ring 26 into the
actuator base 25.
19. Screw the seat fl ange 29 into the union
nut a and tighten it until it is hand tight.
20. Tighten the union nut a using a suitable
open-end wrench (for torques, see
table). This causes the actuator to turn
approx. 90° clockwise until it reaches the
desired position.
Nominal size
DN 65
DN 80
DN 100
21. Push new spindle subassembly 2
through actuator base 25 back into the
initial position of the old subassembly.
22. Insert new O-ring 22 into piston 20.
23. Assemble new lip ring 21 on piston 20.
24. Feed piston 20 through the thread of
spindle 2 in the correct sequence.
25. Fix new hexagon nut 11 with spindle 2 (if
necessary, hold spindle 2 in place using
an appropriate tool that will not damage
the spindle surface).
26. Lubricate new piston sleeve 13 using
appropriate lubricant* and push it into
actuator top 10 (pay attention to the
installation position).
* GEMÜ recommends the lubricant
"Dowcorning 111 Molycote".
27. Insert new O-ring 24 into piston
sleeve 13.
28. Insert compression spring(s) 17, 18
and 34 into piston sleeve 13 and centre
them.
29. Mount actuator top 10 (see chapter 7.1

"Installation of actuator top").

30. Insert new gasket 4 in valve body 1.
31. Mount actuator A (see chapter 7.2

"Actuator mounting on the valve body").

19 / 24
Torques [Nm]
200
200
200
532 SKS