Replacing The Diaphragm Unit - Samson 2371 Series Mounting And Operating Instructions

6.4 Replacing the diaphragm
unit
Type 2371-11 · Diaphragm unit
In the event that the diaphragm is defective,
we recommend replacing the entire dia-
phragm unit. This consists of the diaphragm
(4), plug stem (3.2) inside of it and plug sup-
port (3.1).
Type 2371-11 ∙ Housing with clamp fitting
Diaphragm unit removed
Type 2371-11 ∙
Fig. 11: Replacing the diaphragm unit
EB 2640 EN
Contact SAMSON if you intend to replace just
the diaphragm or plug support.
How to proceed:
See Fig. 11
1. Removing the plug (see section 6.3 on
page 19).
Note
The valve and housing are loaded by the com-
pressed springs. The valve is opened by
8
spring force. Relieve the set point springs of
tension before removing the actuator housing.
12
2. Remove the stopper. Undo the locking
screw (12). Turn the set point screw (6)
counterclockwise to relieve the tension
9
from the set point springs. As a result, the
housing is not loaded by the spring ten-
sion anymore (refer to section 5.2 on
page 11).
3. Release clamp fitting (9). Lift off the actu-
15
ator housing (8) together with the spring
assembly (7) and set point screw (6).
3.2
4. Remove the guide flange (5) together with
plug stem (3.2) inside of it as well as the
mechanical stop (15), plug support (3.1)
5
and diaphragm (4).
5. Unscrew the locking screw (12). Undo
both screws of the mechanical stop plate
(15). Lift off plate.
4
Cleaning and maintenance
21