EB 2534 EN
27
Servicing
The regulator was checked by SAMSON be
-
fore delivery.
− The product warranty becomes void if
service work not described in these
instructions is performed without prior
agreement by SAMSON's After-sales
Service.
−
Only use original spare parts by
SAMSON, which comply with the original
specifications.
SAMSON's After-sales Service can support
you concerning lubricant, tightening torques
and tools approved by SAMSON.
SAMSON's After-sales Service can support
you in drawing up an inspection and test
plan for your plant.
Note
Note
Tip
7.1 Replacing the operating di-
aphragm
See Fig. 2.
If the downstream pressure deviates consid-
erably from the set point, check if the dia-
phragm is leaking. We recommend remov-
ing the regulator from the pipeline.
Remove the operating diaphragm as fol-
lows:
1. Put the regulator out of operation (see
section 9.1).
2. Unscrew and clean the control line (14)
and screw fittings (15).
3. Completely relieve the tension from the
set point springs (7) of the diaphragm
actuator by turning the set point adjuster
(6) counterclockwise (
).
4. Loosen the bolts (13) at the actuator and
remove the top casing of the actuator
(10) together with the actuator stem and
set point springs.
5. Unscrew the nut (18) while holding the
top end of the plug stem (4) with a box
wrench (width across flats 8) stationary.
6. Lift off the top diaphragm plate (17).
7. Take off the operating diaphragm (12).
8.
Check the screw fittings for dirt and
clean them, if necessary.
