Samson 3241 Series User Manual

9-6 EB 8015 EN
Servicing
9.2 Preparing the valve for
service work
1. Lay out the necessary material and tools
to have them ready for the service work.
2. Put the control valve out of operation (see
the 'Decommissioning' section).
3. Remove the actuator from the valve. See
associated actuator documentation.
To remove an actuator with "stem extends"
fail-safe action and/or with preloaded
springs, a certain signal pressure must be
applied to the actuator (see associated actu-
ator documentation). Afterwards, the signal
pressure must be removed and the air supply
disconnected again and locked.
We recommend removing the valve from the
pipeline before performing any service work
(see the 'Removing the valve from the pipe-
line' section).
The following service work can be per-
formed after preparation is completed:
− Replacing the gasket (see section9.4.1)
− Replacing the packing (see section9.4.2)
− Replacing the seat and plug (see sec-
tion9.4.3)
9.3 Mounting 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. Put the control valve back into operation
(see the 'Start-up' section). Observe the
requirements and conditions for start-up
or putting the valve back into operation.
9.4 Service work
Î Before performing any service work,
preparations must be made to the control
valve (see section9.2).
Î After all service work is completed, check
the control valve before putting it back
into operation (see 'Testing the installed
valve' in the 'Installation' section).
Note
Tip

Samson 3241 Series Specifications

General

Brand	Samson
Model	3241 Series
Category	Control Unit
Language	English