Samson 44-6 B, Монтаж и эксплуатация, Страница: 45 / 66

EB 2626-2 EN 9-5
Servicing
9.3.2 Replacing the operating
bellows
Î
See Fig. 9-1
Disassembly
1. Completely relieve the tension from the
set point spring (7) by turning the set
point adjuster/set point screw (8/9)
counterclockwise (

) as far as it will go.
2. Undo the screws (10).
3. Remove the spring housing with set point
spring (7) and operating bellows (5).
4. Remove the operating bellows and re-
place with a new one.
Assembly
1. Replace the body gasket (1.1) with a
new one.
2. Place the spring housing with spring (7)
and operating bellows (5) onto the valve
body.
3. Screw in the screws (10). Observe the
specified tightening torques (see 'Tighten -
ing torques' in Annex).
aged, replace the entire unit with a new
one.
8. Unscrew the seat using a seat wrench
1)
if the seat facing is damaged.
Assembly
1. Screw in the seat using a seat wrench 1) .
Observe the specified tightening torques
(see 'Tightening torques' in Annex).
2. Insert a new seal (1.2).
3.
DN 15 to 25
Use the plug wrench 1) to screw in the
plug (2). Observe the specified tighten -
ing torques (see 'Tightening torques' in
Annex).
DN 32 to 50
Use the plug wrench
1)
to screw in the
plug nipple with plug (2). Observe the
specified tightening torques (see 'Tighten -
ing torques' in Annex).
4. Insert a new seal (1.1) into the body.
5. Place the spring housing with spring (7)
and operating bellows (5) onto the valve
body.
6. Screw in the screws (10). Observe the
specified tightening torques (see 'Tighten -
ing torques' in Annex).
1)
Contact SAMSON concerning the special tool.