Samson 3246 Mounting And Operating Instructions page 73

Note
Do not completely unscrew the grub screw.
9. Loosen threaded bushing (87).
Note
The threaded bushing does not need to be
completely unscrewed on replacing the seat
and plug.
10. Replace the circulation inhibitor (see sec-
tion 9.4.2).
11. Pull the plug with plug stem (5) out of the
insulating section (21).
12. Unscrew the seat (4) using a suitable
tool.
13. Apply a suitable lubricant to the thread
and the sealing cone of the new seat.
14. Screw in the seat (4). Observe tightening
torques.
15. Apply a suitable lubricant to the new
plug stem (5).
16. Slide the new plug with plug stem (5) in-
to the insulating section (21).
17. Tighten the bottom threaded bushing
(87). Observe tightening torques.
18. Tighten the grub screw (88) using a hex
socket screw.
19. Screw in the top threaded bushing (8)
and tighten it. Observe tightening
torques.
20. Place the insulating section (21) together
with the plug stem and plug (5) onto the
body (1).
EB 8046 EN
Version with V-port plug: align the plug
(5), making sure that the largest
V-shaped port of the V-port plug faces
toward the valve outlet.
Versions with perforated plug: align the
plug (5), making sure that the hole clos-
est to the seal facing of the plug faces to-
ward the valve outlet.
See relevant information under 'Mount-
ing the actuator onto the valve' in the 'In-
stallation' section.
21. Firmly press the plug (5) into the seat (4).
Fasten down the insulating section (21)
with the body nuts (14). Tighten the nuts
gradually in a crisscross pattern. Ob-
serve tightening torques.
22. Place yoke (3) onto the insulating section
(21) and fasten using the castellated nut
(92).
23. Loosely screw the lock nut (10) and stem
connector nut (9) onto the plug stem (5).
c) Three-way valve, Class 150
and 300/PN 16 and 40
NOTICE
!
Risk of control valve damage due to incor-
rect servicing.
Î To replace seat and plug in the three-way
valve, contact our after-sales service.
Servicing
9-15