IM-P357-29
CTLS Issue 14
26
5.3 PN9000R spring-retract
5.3.1 Diaphragm kit - How to fit:
Note:
Items
9
and
28
do not apply to the PN9400 actuator.
-
Remove the actuator from the valve as described in Section 5.1.
Note 1:
There are 3 off longer housing screws (
23
) which are fitted to safely allow spring
decompression. These should be removed last after all other screws are removed and
should be loosened evenly to prevent distortion of the housing.
-
Lubricate the threads of the three long hex. head screws with a PTFE based grease
before releasing the tension in the springs.
-
Loosen and remove the short housing screws and nuts (
22
,
23
and
24
).
-
Holding each nut with a spanner, rotate the three long hex. head screws a few turns at
a time. Remove the screws and upper housing (
2
).
-
Using a spanner to hold the actuator spindle (
6
), loosen and withdraw the bolt (
21
).
-
Taking care not to damage the 'O' ring (
9
) fitted between the diaphragm support plate
(
3
) and spacer (
8
), remove the washer (
28
) and the diaphragm (
4
).
-
Refit the new diaphragm (
4
) reassembling all items in reverse order. It is
recommended that Loctite 243 be applied to the upper thread of the spindle (
6
) prior
to tightening. Ensure spring or springs are correctly seated. Using a spanner to hold
actuator spindle (
6
) and tighten the bolt (
21
). Refer to Table 1, for the recommended
tightening torques.
-
Refit the upper housing (
2
) and securing nuts and screws (
22
,
23
and
24
).
Note 2:
Tighten the housing securing screws evenly to avoid distortion. 3 off longer
housing screws (
22
) are provided on some spring ranges to cater for longer springs. If
supplied, these should be positioned 120
°
apart and tightened evenly prior to fitting the
remaining bolts.
Table 1 Recommended tightening torques
Actuator
series
Screws and nuts
(Items 22
,
23 and 24)
Bolt
(Item 21)
Size
Torque
Size
Torque
N m
lbf ft
N m
lbf ft
PN9100
M6
7
5.2
M12
40
29.5
PN9200
M10
35
26.0
M12
40
29.5
PN9300
M10
35
26.0
M12
40
29.5
PN9400
M10
60
44.0
M16
40
29.5
Summary of Contents for PN9120
Page 2: ...IM P357 29 CTLS Issue 14 2...
Page 11: ...IM P357 29 CTLS Issue 14 11 Fig 2 PN9400E 12 1 14 4 3 2 7 13 18 16 17 11 10 9 15 6 8 5 19...
Page 21: ...IM P357 29 CTLS Issue 14 21 Fig 10 11 26 and 27...
Page 23: ...IM P357 29 CTLS Issue 14 23 Fig 11 PN9100E spring extend 4 21 6 28 2 8 22 23 and 24...
Page 25: ...IM P357 29 CTLS Issue 14 25 Fig 12 PN9100E spring extend 21 6 2 22 23 and 24...
Page 33: ...IM P357 29 CTLS Issue 14 33 A E D C B Fig 17 F...
Page 41: ...IM P357 29 CTLS Issue 14 41 28 29 25 26 23 11 9 5 21 Fig 23 PN9400 4 3 30 23 19 20...
Page 42: ...IM P357 29 CTLS Issue 14 42...
Page 43: ...IM P357 29 CTLS Issue 14 43...
Page 44: ...IM P357 29 CTLS Issue 14 44...
