Dungs FRM 100025 HD, Instruction Manual, Page: 150 / 174

42 …64
Edition 10.15 • No
. 270 442
17
19 20
G
H
V
L
F
18
Y
O
X
K
J
N
M
I
E
D
F
B
Fix the diaphram housing O by tightening the 4
screws Y .
Reinsert the diaphragm disc I (HD version only)
(maintenance set 2). Insert the new O-ring H (HD
only) (maintenance set 2) in the turned groove of
the diaphragm disc I . Put on the upper diaphragm
hood F .
Re-fit the diaphram cover using the 20 off G (M10
screws) with an open ended spanner SW 16 . Insert
the setpoint spring E in the spring dome F . Insert
the spring washer D incl. ball on the spring. Tighten
the sealing cap C in the spring dome F . Tighten the
adjusting screw B such that the required preload is
reached. Install the protective cap A .
Reinsert the working diaphragm M on the guide rod
N . Put on the safety spring L and the spring washer
K . Screw on the nut J (M 8).
Tighten to the stop using an open-ended screw
SW 13.