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Servicing
9.1 Service work preparations
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' chapter).
Tip
We recommend removing the regulator from
the pipeline before performing any service
work (see the 'Removing the regulator from
the pipeline' chapter).
The following service work can be per-
formed after preparation is completed:
− Replace the seat and plug (see Chap-
ter 9.4)
− Replace the operating diaphragm (see
Chapter 9.5)
9-4
9.2 Installing the regulator
after service work
Î Put the regulator back into operation (see
the 'Start-up' chapter). Make sure the re-
quirements and conditions for start-up or
putting the valve back into operation are
met.
9.3 Service work
Î Before performing any service work,
preparations must be made to the regu-
lator (see Chapter 9.1).
Î After all service work is completed, check
the regulator before putting it back into
operation (see section 'Testing the regu-
lator' in the 'Installation' chapter).
EB 3124 EN
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