Instruction Manual
D103407X012
1052PSV Actuator
May 2011
20
Adjustable Down Travel Stops
Note
When this valve is shipped, the manual travel stops are adjusted for 80 degrees rotation of the valve.
Adjustable down travel stops have been provided to limit the diaphragm rod travel away from the casing. This
adjustment will limit the amount of valve rotation from 40
_
to 80
_
open.
WARNING
To avoid personal injury, perform the steps in the WARNING at the beginning of the Maintenance section to isolate the
control valve and actuator.
Be aware of pinching parts during installation, maintenance, and adjustments of valve/actuator components. To avoid
injury, keep hands and tools clear of actuator access windows when operating or adjusting the actuator.
1. A regulated air supply with appropriate gauge will be required to stroke the actuator to the desired angle of
rotation.
2. The actuator should be fully assembled and connected to the valve before proceeding. If not, refer to the Assembly
section to assemble the actuator.
3. Zero the valve and actuator using the Precise Valve/Actuator Closed Position Adjustment and turnbuckle
adjustment instructions.
4. Apply pressure to the diaphragm casing while using a digital protractor to position the valve to the desired rotation.
Using the top of the valve body as a reference for 0 degrees, rotate the valve until the square on the hub (key 29) is
at the desired angle of rotation. Refer to figure 6.
5. Loosen both hex nuts (key 21) using a 1-5/16 inch wrench and rotate each nut away from the actuator box for
adjustment.
6. Thread cap screws (key 22) towards the lever (key 27) until each contacts the lever without torquing.
7. Apply nuclear grade anti-seize lubricant to the 7/8-9x6.50 cap screws (key 22), threading the nut as far as possible
onto the cap screw. Tighten the nuts (key 21) to 163 N
S
m (120 lbf
S
ft) with a 15/16 inch wrench.
Parts Ordering
When corresponding with your Emerson Process Management sales office about this equipment, refer to the serial
number found on the actuator nameplate (key 41, figures 13). Also, specify the complete 11‐character part number
from the following parts list when ordering replacement parts. The Size 70 actuator is available only in Type 1052
actuators.
WARNING
Use only genuine Fisher replacement parts. Components that are not supplied by Emerson Process Management should
not, under any circumstances, be used in any Fisher valve, because they may void your warranty, might adversely affect the
performance of the valve, and could cause personal injury and property damage.