IM-P357-29
CTLS Issue 14
20
5. Maintenance
The PN9000 series pneumatic actuators (and variants) are maintenance free. To ensure
satisfactory operation it is strongly recommended that the control signal air is filtered and
supplied dry and free of oil. Should it be necessary to replace spare parts the following
procedure should be used.
CAUTION!
The diaphragm housing contains powerful springs under compression.
Exercise great care when dismantling.
Read this Maintenance section thoroughly prior to commencing any work.
5.1 Removing the actuator from the valve:
-
Drive the actuator into approximately mid-travel position with the air supply.
-
Loosen and remove the clamp nuts and screws (
26
and
27
, see Figure 10) and remove
the valve adaptor (
11
).
-
Loosen and remove the actuator mounting nut (see Figure 9) and lift the actuator off
the valve.
-
Reduce the air supply pressure until the housing is pressure free. Disconnect the air
supply from the actuator.
Fig. 9
25
Mid travel
Actuator mounting nut
10
11
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...
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