Emerson Fisher 3025 Instruction Manual page 20

3025 Actuator
May 2011
14. If required, the driving shaft assembly can be broken down by removing the nut (key 118), the washer (key 117),
the rotation indicator (key 114.5), the handwheel (key 116), and then the driving shaft (key 114.4) and the bearing
(key 114.3). If required, remove the cap screws and nuts (keys 114.9 and 114.10) of the anti-rotator clamped on
the driving shaft housing (key 114.1), the anti-rotator (key 114.7), the spacer (114.8) and the two clamps (key
114.6).
15. Remove the screws (key 108), the washer (key 107), the key (key 106), the gear ring (key 105) and the bearing
(key 104). If required, remove the bushing (key 103) from the gear housing (key 102).
Side-Mounted Handwheel Assembly
1. If the driving shaft assembly was separated, coat the bushings (key 114.2), the bearing (key 114.3) and the shaft
(key 114.4) with lithium grease (key 201). Place the bearing, and then insert the shaft into the housing (key 114.1).
Place the handwheel (key 116), the rotation indicator (key 114.5), the washer (key 117) and then insert and tighten
the nut (key 118). Place the two clamps (key 114.6), the spacer and the anti-rotator at the opposite (keys 114.7 and
114.8), insert the cap screws and nuts (key 114.9 and 114.10) and tighten them.
2. If removed, coat the bushing (key 103) with lithium grease (key 201) and slide it into the housing (key 102).
3. Coat the bushing (key 103), the bearing (key 104) and the gear ring (key 105) with lithium grease (key 201). Place
the gear housing (key 102) onto the yoke, install the bearing (key 104), and the gear ring (key 105).
4. Coat the thread of the shafts (keys 110 and 111) and the internal threads of the shaft connector (key 109) with
anti-seize lubricant (key 202). Insert the lower threaded shaft (key 110) into the shaft connector (key 109) by
engaging three or four threads.
5. For the size P460-200, if the upper threaded shaft (key 111) was separated from the bridge (key 112), screw the
shaft into the bridge. Align the holes and insert the pin (key 127).
6. Apply lithium grease (key 201) to the inside of the gear ring (key 105). Place the shaft assembly (keys 109 and 110)
into the gear ring and align the grooves. Apply lithium grease (key 201) to the key (key 106) and insert it. Place the
washer (key 107), insert the screws (key 108) and tighten them.
7. Coat the handwheel assembly cog (key 114) and the gear ring cog (key 105) with anti-seize lubricant (key 202).
Place the handwheel assembly. Insert the cap screws (keys 115 and 126) and adjust the gap between the gear cogs
by screwing or unscrewing the cap screws. Then tighten the cap screws (key 115).
8. Place the bridge (key 112) and the upper shaft (key 111). Insert the upper shaft into the shaft connector (key 109)
by turning counter-clockwise the handwheel. Engage three or four threads as done previously for the lower shaft.
Note
The actuator is normally shipped adjusted at the factory and you may refer directly to the following steps. If the actuator has been
disassembled, it is necessary to adjust the travel stop. You may perform the Travel Stop Adjustment in accordance with the
procedures in the Installation section.
9. Lift the actuator and place it onto the handwheel. Insert the cap screws (key 77) and tighten them.
WARNING
When moving the actuator stem with loading pressure applied, exercise caution to keep hands and tools out of the
actuator stem travel path. If the loading pressure is accidentally disconnected, personal injury and property damage is
possible if something is caught between the actuator stem and other control valve parts.
10. For an air-to-open actuator only: set the diaphragm loading pressure to approximately 0.5 bar over the upper
bench set pressure. The actuator should be contacting the upper travel stop.
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Instruction Manual
D251402X012