26
EB 2534 EN
Servicing
7 Servicing
The regulator does not require much mainte-
nance. Nevertheless, it is subject to natural
wear, particularly at the seat, plug and oper-
ating diaphragm. Depending on the operat-
ing conditions, check the regulator at regular
intervals to avoid possible malfunctions.
Risk of bursting in pressure equipment.
Regulators and pipelines are pressure equip
-
ment. Improper opening can lead to device
components bursting.
− Before starting any work on the device,
depressurize all plant sections affected as
well as the regulator.
−
Drain the process medium from all the
plant sections affected as well as the regu-
lator.
− If necessary, a suitable overpressure pro
-
tection must be installed on site in the plant
section.
− Wear personal protective equipment.
Risk of personal injury due to residual pro-
cess 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. burns.
−
If possible, drain the process medium from
all the plant sections affected and the regu-
lator.
− Wear protective clothing, safety gloves and
eye protection.
DANGER
!
WARNING
!
Risk of burn injuries due to hot or cold com-
ponents and pipelines.
Depending on the process medium, regula-
tor components and pipelines may get very
hot or cold and cause burn injuries.
−
Allow components and pipelines to cool
down or warm up to the ambient tempera-
ture.
− Wear protective clothing and safety gloves.
Risk of regulator damage due to incorrect
servicing.
Only let properly trained staff perform ser-
vice work.
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.
Observe the tightening torques specified in
section 7.3.
WARNING
!
NOTICE
!
NOTICE
!