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MC • Edition 2022.08 • No
. 278 349 R
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14.2 Maintenance instructions of the regulator
14.2.1 Preparation
1
Loosen the screws G (M10) using an open-ended
wrench SW 17 mm.
2
Loosen the loops using an open-ended wrench
SW 17 mm.
2
14.2.2 Replacement of the working diaphragm
4. Unscrew the sealing cap C from the spring dome
using a jointed hook wrench 90-155 mm.
5. Remove the spring washer D incl. ball and the
setpoint spring
E.
1. Loosen the impulse line and the vent line and
remove them. Release the spring.
2. Remove the protective cap A.
3.
Completely release the setpoint
E
spring at the
adjusting screw B using an open-ended wrench
SW 24 mm.
(–)
1
G
C
E
D
A