Servicing - Samson 2333 Mounting And Operating Instructions

Servicing

6 Servicing
The pressure reducing valve does not require
much maintenance. Nevertheless, it is sub-
ject to natural wear, particularly at the seat,
plug and operating diaphragm.
Depending on the operating conditions,
check the regulator at regular intervals to
avoid possible malfunctions.
WARNING
!
Be aware of the risks on performing work
on pressurized or hot plant sections.
Hot process medium can escape uncon-
trolled on dismantling the regulator. Risk of
scalding.
Allow the regulator to cool down before
depressurizing and draining it and remove it
from the pipeline.
Details on faults and how to remedy them
can be found in Table 3 on page 15.
The listed examples of malfunctions are
caused by mechanical faults in the main
valve or pilot valve as well as incorrect regu-
lator sizing.
In the simplest case, the functioning can be
restored following the recommended action.
To repair the pilot valve, read the operating
instructions for the corresponding regulator
(pilot valve). As in many cases, special tools
are required, we advise you to contact
SAMSON's after-sales service to find out
how to proceed to repair the regulator or
replace a component (see section 10 on
page 23).
14
Exceptional operating and installation condi-
tions can lead to changed situations that
may affect the control response and lead to
malfunctions. In such cases, check the instal-
lation conditions, process medium, tempera-
ture and pressure conditions. A thorough
analysis may often require the on-site assis-
tance of SAMSON's After-sales Service.
The table is not intended to be exhaustive as
there are diverse reasons for malfunctions.
EB 2552-1 EN