Samson 3347 - Installing the Valve after Service Work; Service Work; Replacing the Sealing Parts and Plug

9-4 EB 8097 EN
Servicing
ator documentation). Afterwards, the signal
pressure must be removed and the air supply
disconnected again and locked.
SAMSON recommends removing the valve
from the pipeline before performing any ser-
vice work (see the 'Removing the valve from
the pipeline' chapter).
The following service work can be per-
formed after preparation is completed:
− Replacing the sealing parts and plug (see
Chapter9.4.1)
9.3 Installing the valve after
service work
1. Mount actuator. See associated actuator
documentation.
2. Adjust lower or upper signal bench
range. See associated actuator docu-
mentation.
3. If the valve has been removed, re-install
the valve into the pipeline (see the 'Instal-
lation' chapter).
4. Put the control valve back into operation
(see the 'Start-up' chapter). Observe the
requirements and conditions for start-up
or putting the valve back into operation.
9.4 Service work
Risk of control valve damage due to incor-
rect servicing.
Do not perform any service work on versions
with a heating jacket.
Î Contact our after-sales service to have
service work performed on versions with
a heating jacket.
Î Before performing any service work,
preparations must be made to the control
valve (see Chapter9.2).
Î After all service work is completed, check
the control valve before putting it back
into operation (see section 'Testing the in-
stalled valve' in the 'Installation' chap-
ter).
9.4.1 Replacing the sealing
parts and plug
See “Arrangement of the sealing parts in the
various versions” on page9-6 in this
chapter.
Risk of control valve damage due to incor-
rect handling.
Make sure that the stem seal is not dam-
aged.
Î The plug must not be moved beyond the
valve travel.
Tip
NOTICE
!
NOTICE
!