Servicing - Samson 43-3 Mounting And Operating Instructions

9 Servicing

The regulator does not require much mainte-
nance. Nevertheless, it is subject to natural
wear, particularly at the seat, plug and con-
trol thermostat. Depending on the operating
conditions, check the regulator at regular in-
tervals to avoid possible malfunctions. Plant
operators are responsible for drawing up an
inspection and test plan. Details on faults
and how to remedy them can be found in
the 'Malfunctions' section.
The work described in this section is to be
performed only by personnel appropriately
qualified to carry out such tasks.
We recommend removing the regulator from
the pipeline before performing any mainte-
nance or service work.
EB 2173 EN
WARNING
!
Risk of burn injuries due to hot or cold
components and pipeline.
Regulator components and the pipeline may
become very hot or cold. Risk of burn inju-
ries.
Î Allow components and pipelines to cool
down or warm up to the ambient tem-
perature.
Î Wear protective clothing and safety
gloves.
WARNING WARNING
! !
Risk of personal injury due to residual
process medium in the regulator.
While working on the regulator, residual
process medium can escape and, depending
on its properties, may lead to personal in-
jury, e.g. (chemical) burns.
Î Wear protective clothing, safety gloves
and eye protection.
NOTICE
!
Risk of regulator damage due to exces-
sively high or low tightening torques.
Observe the specified torques when tighten-
ing regulator components. Excessive tighten-
ing torques lead to parts wearing out more
quickly. Parts that are too loose may cause
leakage.
Î Observe the specified tightening torques
(see 'Tightening torques' in Annex).
Servicing
9-1