Samson 3525, Монтаж и эксплуатация

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40 EB 8823 EN
Maintenance
7.2 Compact version
7.2.1 Replacing the O-rings
Risk of valve damage due to abrasion.
The plug and seat facings are very sensitive.
Before unscrewing the bonnet from the body,
apply a signal pressure to the actuator to
slightly lift the plug off the seat. This prevents
the plug and seat from being damaged.
It is not necessary to remove the actuator
from the valve to replace the O-rings.
1. Apply a signal pressure to the actuator to
slightly lift the plug off the seat. Unscrew
the bonnet (2).
2. Lift bonnet (2), yoke (3) and plug with
plug stem (5) off the body (1).
3. Remove O-rings (17) from the bonnet (2)
and carefully clean the grooves.
4. Insert new O-rings (17) into the bonnet
(2).
5. Apply a suitable lubricant to the bonnet
(2).
6. Screw bonnet (2) with yoke (3) and plug
with plug stem (5) into the body (1). Ob-
serve tightening torques.
7.2.2 Replacing the packing
Risk of valve damage due to abrasion.
The plug and seat facings are very sensitive.
Before unscrewing the bonnet from the body,
apply a signal pressure to the actuator to
slightly lift the plug off the seat. This prevents
the plug and seat from being damaged.
1. Apply a signal pressure to the actuator to
slightly lift the plug off the seat. Unscrew
the bonnet (2).
2. Lift bonnet (2), yoke (3) and plug with
plug stem (5) off the body (1).
3. Unscrew guide bushing (7) placing a
suitable tool on the flats.
4. Remove stem connector clamp (A28).
See associated actuator documentation.
It is not necessary to completely remove the
actuator from the valve to replace the pack-
ing.
5. Pull the plug with plug stem (5) out of the
bonnet (2).
6. Pull all the packing parts out of the pack-
ing chamber using a suitable tool.
7. Replace damaged parts. Clean the pack-
ing chamber thoroughly.
8. Apply a suitable lubricant to the guide
bushing (7), to all the packing parts and
to the plug stem (36).
NOTICE !
Note
NOTICE !
Note