Instruction Manual
D100325X012
1061 H & J Actuator
October 2012
13
WARNING
Avoid personal injury or property damage from sudden release of process pressure or uncontrolled movement of parts.
Before performing any maintenance operations:
D Do not remove the actuator from the valve while the valve is still pressurized.
D Always wear protective gloves, clothing, and eyewear when performing any maintenance operations to avoid personal
injury.
D Disconnect any operating lines providing air pressure, electric power, or a control signal to the actuator. Be sure the
actuator cannot suddenly open or close the valve.
D Use bypass valves or c ompletely shut off the process to isolate the valve from process pressure. Relieve process pressure
from both sides of the valve. Drain the process media from both sides of the valve.
D Vent the power actuator loading pressure and relieve any actuator spring precompression.
D Use lock-out procedures to be sure that the above measures stay in effect while you work on the equipment.
D The valve packing box may contain process fluids that are pressurized, even when the valve has been removed from the
pipeline. Process fluids may spray out under pressure when removing the packing hardware or packing rings, or when
loosening the packing box pipe plug.
D Check with your process or safety engineer for any additional measures that must be taken to protect against process
media.
Disassembly
The following procedure describes how the actuator can be disassembled for inspection and replacement of parts.
When inspection or repairs are required, disassemble only those parts necessary to accomplish the job. Key numbers
referenced in this procedure are shown in figure 6 unless otherwise specified.
1. Bypass the valve or other operated equipment. Relieve all actuator loading pressure, and remove the tubing or pipe
from the top of the actuator.
2. Remove the positioner, if one is used.
3. Mark the orientation of the travel indicator (key 38) with respect to the travel indicator scale (key 36). Then,
unscrew the cap screws and washers (keys 35 and 76), and remove the cover (key 34). If a manual handwheel
actuator is used, it will be removed with the cover.
4. Remove the retaining ring (key 31), and slide the hub (key 30) from the cover (key 34) or, if a manual handwheel
actuator is used, remove the cover from the manual handwheel actuator connector. If disassembly of the manual
handwheel actuator is required, refer to the separate manual actuator instruction manual for instructions.
5. Check the condition of the bearing (key 32). If replacement of the bearing is necessary, the travel indicator scale
(key 36) must first be removed by removing the self-tapping screws (key 37). Mark the orientation of the travel
indicator scale on the cover before removing it.
CAUTION
Do not use a hammer or similar tool to drive the lever (key 28) off the output shaft. Driving the lever could damage
operated equipment. For valves, driving the lever could move the valve disc and bearings away from the centered position
causing subsequent damage to valve parts.
If necessary, use a wheel puller to remove the lever. It is permissible to tap the wheel puller screw lightly to loosen the
lever, but hitting the screw with excessive force could damage the operated equipment.
(24 Seiten)
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