Samson 2357-1, Монтаж и эксплуатация

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3.2 Changing the set point range
The set point ranges adjusted by the manufac-
turer can be changed subsequently by ex-
changing the set point springs (8) and the op-
erating diaphragms (3).
In case of doubt, we recommend you to let
SAMSON perform this work for you.
The addresses of SAMSON AG, its subsidiar-
ies, representatives and service facilities
worldwide can be found on the Internet at
www.samson.de, in a SAMSON product cat-
alog or on the back of these mounting and
operating instructions.
CAUTION!
Always remove the regulator from the pipe
when performing any assembly work. Prior to
removing the regulator, relieve the pressure
as well as thaw and drain the corresponding
section of the plant.
1. Unscrew the lock nut (11). Completely re-
lieve the set point springs (8) of tension by
turning the set point adjuster (10) in a
counterclockwise direction.
2. Place the lower section of the body (9)
into a vise, but do not clamp it. Better: use
a box wrench with width across flats =
55 mm. Unscrew the body (1) using an
open-end wrench with width across flats
= 36 mm and remove all parts from the
lower section of the body. Be careful not
to damage the operating diaphragms
(3).
3. Install set point spring(s) for the required
set point range, the spring plates (7), the
ball (6) and the diaphragm plate (5) in
the lower section of the body.
4. Place the required number of dia-
phragms (see table of spare parts) onto
the diaphragm plate and replace the
PTFE gasket (4) of the valve body, if re-
quired.
5. Carefully place the body onto the lower
section of the body. Then screw the body
onto the lower section of the body using a
tightening torque of approx. 180 Nm for
PN 40 and approx. 250 Nm for PN 50.
EB 2557 EN
7
Operation