Samson 3525, Монтаж и эксплуатация

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EB 8823 EN 33
Maintenance
Risk of valve damage due to incorrect main-
tenance or repair.
Service and repair work must only be per-
formed by trained staff.
Risk of valve damage due to excessively high
or low tightening torques.
Excessively tightened torques lead to parts
wearing out quicker. Parts that are too loose
may cause leakage.
Observe the specified tightening torques (see
Table 5 and Table 6).
Risk of valve damage due to the use of un-
suitable lubricants.
The lubricants to be used depend on the
valve material. Unsuitable lubricants may
corrode and damage the valve surface.
Only use lubricants approved by SAMSON
(see parts list).
The control valve was checked by SAMSON
before it left the factory.
−
Certain test results (seat leakage and leak
test) certified by SAMSON lose their validi-
ty when the valve body or actuator hous-
ing is opened.
− The product warranty becomes void if
maintenance or repair work not described
in these instructions is performed without
prior agreement by SAMSON’s After-sales
Service department.
−
Only use original spare parts by
SAMSON, which comply with the original
specifications.
7.1 Standard version
7.1.1 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. Bend down the flap of the tab washer
(224).
2. Apply a signal pressure to the actuator to
slightly lift the plug off the seat. Unscrew
the bonnet (2).
3. Lift bonnet (2) and plug with plug stem
(5) off the body (1). Remove tab washer
(224).
4. Remove O-rings (17) from the bonnet (2)
and carefully clean the grooves.
>Class 900 with FKM O-ring: Remove
support ring (244).
NOTICE !
NOTICE
!
NOTICE !
Note
NOTICE !
Note