Changing actuator mounting, Changing styles – Emerson Process Management 1051 User Manual
Page 22
Instruction Manual
D100320X012
1051 and 1052 H & J Actuators
October 2012
22
Changing Actuator Mounting
The actuator is normally positioned vertically in a horizontal pipeline. However, each style can be mounted in two
possible mounting styles and four possible positions (see figure 10 ).
Note
Due to its weight, the 1052, size 70 actuator must be externally supported if mounted in the horizontal position.
WARNING
Before performing any Actuator Mounting steps, follow the steps in the WARNING at the beginning of the Maintenance
section.
Use the following procedures along with figures 12 and 13 for key number references to convert from style A to style B
or vice versa or to change the mounting position.
Changing Styles
1. Unscrew the cap screws and washers (keys 34 and 63), and remove the cover (key 33).
2. Heat the hex nut (key 19) to 177_C (350_F) long enough for the thread-locking adhesive (high strength) (key 77) to
lose its holding strength. Then, remove the cap screw and hex nut (keys 18 and 19).
3. Loosen the cap screw (key 28).
CAUTION
If necessary, use a wheel puller to remove the lever (key 27) from the output shaft (key 87). 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.
4. Mark the side of the lever (key 27) that is nearest to the end of the output shaft (key 87). This marking is used during
reassembly to determine which side of the lever should be inserted into the actuator housing first. When the lever is
marked, remove the lever.
5. For an actuator with a J mounting adaptation,
a. Unscrew the cap screws (key 23), and remove the actuator housing (key 20) from the mounting bracket (key 22).
b. Rotate the actuator housing 180 degrees, maintaining the appropriate position (1, 2, 3, or 4), and place the
actuator onto the mounting bracket (key 22).
c. Secure the actuator housing to the mounting bracket with the cap screws (key 23). Tighten the cap screws to the
torque value listed in table 11.