EB 3003 EN
15
Customer inquiries
7.1
Replacing the operating dia-
phragm
If just the operating diaphragm is defective,
it can be replaced without having to remove
the valve from the pipeline. Drain the rele-
vant section of the pipeline. Unscrew the
control lines and separate the actuator from
the valve.
1.
Loosen the bolts (15) at the actuator and
remove the top casing together with the
actuator stem and spring assembly.
2. Unscrew the nut (18) while holding the
bottom diaphragm stem stationary using
a suitable tool.
3.
Lift off diaphragm plate (19) and pull out
diaphragm.
4. Insert a new diaphragm.
5.
Proceed in the reverse order to reassem-
ble the regulator.
For start-up, proceed as described in sec-
tion 6.1.
8
Customer inquiries
Contact SAMSON's After-sales Service de-
partment for support concerning mainte-
nance or repair work or when malfunctions
or defects arise.
You can reach the After-sales Service De-
partment at aftersalesservice@samson.
Addresses of SAMSON AG and its subsid-
iaries
The addresses of SAMSON AG, its subsid-
iaries, representatives and service facilities
worldwide can be found on the SAMSON
website (
u
www.samson.de) in all SAMSON
product catalogs or on the back of these
Mounting and Operating Instructions.
To assist diagnosis and in case of an unclear
mounting situation, specify the following de-
tails (so far as possible). See section 9:
−
Type and nominal size of the valve
−
Model number with index
−
Upstream and downstream pressure
−
Temperature and process medium
−
Min. and max. flow rate
−
Is a strainer installed?
−
Installation drawing showing the exact
location of the regulator and all the ad-
ditionally installed components (shut-off
valves, pressure gauge, etc.)