24 …60
MC • Edition 2022.08 • No
. 278 349 R
ev
. -0
25 … 60
11.5.1 Spring replacement W
dso
1
Unscrew the adjusting spring B
from the spring
dome G using a tube/socket wrench SW 22 mm.
(–)
E
G
G
11.5.2 Spring replacement W
dsu
(–)
1. Remove the spring F from the spring dome G.
2. Install the new spring.
3. Tighten the adjusting screw C
in the spring
dome G using a tube/socket wrench SW
17 mm until the desired spring preload is
reached.
4. Reinsert the protective cap A.
F
G
1. Remove the spring E from the spring dome G.
2. Install the new spring.
3. Tighten the adjusting screw B and plastic
washer
D in the spring dome G
using a
tube/socket wrench SW 22 mm
until the
desired spring preload is reached.
4. Reinsert the protective cap A.
2
1
D
5. Stick on the type plate the label corresponding to new
spring range. Take label included on the spring kit and
cut the range corresponding to the same type as the
type plate on the regulator (MD, HD, UHD).
Example label for spring kit (270183):
ND W
dso
: 0,09 - 0,24 bar / 9 - 24 kPa
MD W
dso
: 0,23 - 0,37 bar / 23 - 37 kPa
