Instruction Manual
D103407X012
1052PSV Actuator
May 2011
14
2. Apply thread locking adhesive, medium strength, (key 77) to the four 5/1618 x 1.00 cap screws and bolt the two
angle GO switch brackets to the mounting bracket. Torque the 5/1618 cap screws and nuts to 23 N
S
m (17 lbf
S
ft).
3. Apply thread locking adhesive, medium strength, (key 77) to the four 8-32 x 0.88 socket head cap screws (key 38).
Install the slotted, open trip arm and closed trip arm brackets, with travel indicator scale (key 37), to the hub
(key29) as shown in figures 9 and 10. Install the 8-32 x 0.88 socket head cap screws (key 38) finger tight.
CAUTION
The bolt patterns on the travel indicator and travel indicator scale (keys 37 and 35) are symmetric, meaning the
components could be installed in multiple orientations. Ensure the travel indicator and travel indicator scale are mounted
correctly as shown in figure 10, otherwise there will be false valve position indication.
4. Install one GO Switch and hex nut on each GO switch bracket and one target magnet with a hex nut on each trip
arm bracket.
5. Adjust the valve to the desired full open rotation, typically 40 to 80 degrees.
6. With the valve in the desired open position, establish a 0.100 inch gap between the GO switch and target magnet;
this is accomplished by adjusting the open trip arm bracket rotationally and by changing the thread engagement of
the switch and magnet. Torque the 8-32 x 0.88 inch socket head cap screws (key 38) to 3.4 N•m (2.5 lbf•ft
[30 lbf•in]) using a 9/64 inch socket wrench.
7. Apply thread locking adhesive, medium strength, (key 77) to the target magnet 7/16-20 threads and torque to
47 N•m (35 lbf•ft). Apply thread locking adhesive, medium strength, (key 77) to the GO switch 5/8-18 threads and
torque to 47 N•m (35 lbf•ft).
8. Return the valve back to the closed position and verify the gap between the closed position GO switch and target
magnet is 0.100 inch.
Maintenance
Actuator parts are subject to normal wear and must be inspected and replaced as necessary. The frequency of
inspection and replacement depends upon the severity of service conditions. Key numbers are shown in figure 13 for
the 1052PSV actuator.
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. Be aware of pinching parts during maintenance operations.
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 completely 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.