Changing Actuator Mounting; Changing Styles - Emerson 1051 Instruction Manual

1051 & 1052 H & J
DESIRED ACTION OF
Actuator Operated Equipment
Push Down
Clockwise to Close
(1) (1)
to Open to Open
Counterclockwise to Close
(PDTO)
Push Down
Clockwise to Close
(2) (2)
to Close to Close
Counterclockwise to Close
(PDTC)
1. This action uses the spring to close the valve body or other equipment.
2. This action uses the spring to open the valve body or other equipment.
3. When viewed from actuator side of valve body or other equipment.
Figure 10. Actuator Housing Construction Styles and
Mounting Positions
11. Apply thread-locking adhesive (high strength)
(key 77) to the threads of the cap screw (key 18).
12. Connect the lever (key 27) and the rod end
bearing (key 17) with the cap screw and hex nut
(keys 18 and 19). Tighten the cap screw to the
torque value listed in table 10.
13. If a positioner is to be used, consult the
separate positioner instruction manual for proper
positioner installation.
14. Coat the bearing surfaces of the hub (key 29)
and cover (key 33) with lithium grease (key 76).
Install the bearing (key 31) and hub into the cover.
Secure with the retaining ring (key 30).
15. Install the travel indicator scale (key 35) so that
the markings on the scale and cover that were made
in step 5 of the Disassembly procedure are oriented
correctly. Secure the travel indicator scale to the
cover with the self-tapping screws (key 36). Then
install the travel indicator (key 37), and secure it with
the self-tapping screws (key 38).
18
HOUSING
CONSTRUCTION CONSTRUCTION
TO SPECIFY
(3)
Style A
(3)
Style B
(3)
Style B
(3)
Style A
16. Position the travel indicator (key 37) so that the
markings on the travel indicator and travel indicator
scale that were made in step 3 of the Disassembly
procedure are oriented correctly. Then, replace the
cover (key 33), and secure it with the cap screws
and washers (keys 34 and 63). If the holes in the
cover and housing (key 20) do not align, use a
regulated air source to move the actuator slightly off
the up travel stop. If hole alignment cannot be
obtained in this manner, temporarily loosen the cap
screws (key 23), and shift the housing slightly. Do
not stroke the actuator while the cover is off. Tighten
the cap screws to the torque value listed in table 10.
17. Follow the instructions in the Actuator Mounting
section for correct actuator mounting and
adjustment. Remember to replace the access plate
(key 59) when performing this procedure.

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 ).
Due to its weight, the Type 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).
Instruction Manual
Form 5587
November 2006
Note