80-4280-10, Rev. 4
45
FIGURE 6.
Install the new control end assembly:
1. Inspect the control end gasket and replace as
necessary. If the gasket is in good condition
and does not require replacement, skip steps
2-6 and go straight to step 7.
2. Protect the CPS-4 with a static-free cover.
3. Clean the mating face of the actuator body
to remove any remaining gasket material
and adhesive. Use caution not to damage or
bend the control shaft. Ensure that the mating
surface is free from damage (such as dents or
gouges).
4. Peel the backing off the replacement gasket
and carefully apply to the actuator body.
5. Remove the protective cover from the CPS-4.
6. Slide the new control end assembly onto the
shaft, turning the coupling if necessary to align
the assembly with the shaft. Align notch in the
stator with the locating pin situated to the left
of the control end shaft (see Figure 6).
7. Loosen the clamp screw to allow the top clamp
to drop into place over the upper rim of the
stator. Rotate the assembly as necessary to
align the top of the notch with the mark made
earlier on the actuator face. Snug the screws
down on the plate. Raise the bottom clamp
into position and snug the screws. Check
the clamps for proper shoulder clearance and
tighten the screws to 12 lb-in (1.3 N•m) torque.
8. Plug the pin connectors into their respective
sockets.
9. Tighten the outer 2 setscrews on the coupling.
The screw on the flat of the shaft must be
tightened first to properly align the assembly.
Torque screws to 12 lb-in (1.3 N•m).
Test for proper operation:
1. Connect power to the actuator.
2. Modulate the Demand signal to run the
actuator through its full range of motion. Verify
the correct actuator response.
3. Modulate the signal to several intermediate
levels and note if the actuator attains the
proper position.
4. Once proper operation is verified replace the
control end cover, tighten the cover bolts to 10
lb-ft (14 N•m) torque, and return the actuator
to service.
Control End Replacement Kit Contents
(P/N 12-8065-05)
Description
Part Number
Control End Assembly
23-2500-21
Screw (8-32 x 1/2”)
(4 pieces)
30-0329-35
Flat Washer #8 (4 pieces)
30-0313-31
Lock Washer #8 (4 pieces)
30-0327-20
Control End Gasket
10-8080-02
(P/N 12-8065-15)
Description
Part Number
Control End Assembly
23-2500-52
Screw (8-32 x 1/2”)
(4 pieces)
30-0329-35
Flat Washer #8 (4 pieces)
30-0313-31
Lock Washer #8 (4 pieces)
30-0327-20
Control End Gasket
10-8080-02
Button Head
Screws (4)
Stator Flange
Mark actuator
face to locate
notch
Align notch with
locating pin
Slide Clamp Up
Over Shoulder
