Preparing The Valve For Service Work; Installing The Regulator After Service Work; Service Work - Samson 41-23 Mounting And Operating Instructions

Servicing
9.1 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 regulator out of operation (see
the 'Decommissioning' section).
Tip
We recommend removing the regulator from
the pipeline before performing any service
work (see the 'Removing the valve from the
pipeline' section).
The following service work can be per-
formed after preparation is completed:
− Replacing the actuator (see sec-
tion 9.3.1)
− Replacing the set point springs (see sec-
tion 9.3.2)
− Replacing the seat and plug (see sec-
tion 9.3.3)
− Replacing the operating diaphragm (see
section 9.3.4)
9.2 Installing the regulator
after service work
Î Put the regulator back into operation (see
the 'Start-up' section). Make sure re-
quirements and conditions for start-up
are met.
9-4
9.3 Service work
Î Before performing any service work,
preparations must be made to the regu-
lator (see section 9.1).
Î After all service work is completed, check
the regulator before start-up (see 'Testing
the regulator' in the 'Installation' section).
EB 2512 EN