RCS Sure 49 Field Installation Instructions

Note: SurePowr actuators can be supplied for clockwise or counter-clockwise spring driven rotation (viewed from the top of the actuator).

The spring drive rotation is noted on the actuator name tag and wiring diagram. Ensure that the actuator has been supplied with the proper
spring drive operation for the application prior to installation on the driven device.

1. The actuator is shipped in the power off (fail) position. Ensure that the driven device is oriented to its
fail position prior to installation of the actuator.

2. Care should be taken to maintain proper alignment between the actuator and the device shaft.
If the actuator is not in the correct alignment with the device shaft, repeat the procedure in Step 1.

3. Mount the actuator to the device. Ensure the actuator is centered properly with the device shaft, and
then tighten all bolts and nuts evenly.

4. Remove the cover bolts located around the actuator motor and control cover flange.

5. Terminate field wiring per the appropriate RCS wiring diagram, supplied with the actuator. Use a
minimum of #18 AWG stranded wire.

Switch adjustments for clockwise spring fail operation (viewed from the top of the actuator)

a. Ensure actuator is de-energized and positioned in the clockwise (fail) position. Loosen the setscrews on Cams 1 and 3. Rotate both

counter-clockwise until they clear the switch arm rollers of Switches 1 and 3.

b. Rotate Cam 1 clockwise until it comes in contact with Switch 1’s arm roller and the switch “breaks”. A light “click” can be heard.

Tighten the set-screws on Cam 1.
c. Rotate Cam 3 clockwise until it comes in contact with Switch 3’s arm roller and the switch just “breaks”. A light “click” can be heard.
d. Rotate Cam 3 slightly further in the clockwise direction. (This ensures that Switch 3 will “break” just prior to the actuator reaching the

full fail position.) Tighten the setscrews on Cam 3. Energize the actuator. This will move the actuator to the opposite end of travel.
e. Upon reaching the opposite end of travel, Cam 2 should just engage the roller on Switch 2 so that the switch just “breaks”.

This action will stop the actuator. Check that the actuator has properly positioned the driven equipment.
f. If actuator travel is insufficient, rotate Cam 2 slightly clockwise until the cam just clears the roller of Switch 2. As soon as the

cam clears the roller, the actuator will “bump” electrically towards the end of travel. Continue until the actuator reaches the full

end of travel.

SUREPOWRTMSERIES - SURE 49

FIELD INSTALLATION INSTRUCTIONS

In the maintenance and operation of mechanical equipment, SAFETY

is the basic factor which must be considered at all times. Through

the use of the proper clothes, tools and methods of handling, serious accidents causing injury to you or your fellow workers can be prevented.
Throughout this manual are listed a number of safety precautions. Study them carefully and follow them; also insist that those working

for you do the same. Remember, an accident is usually caused by someone’s carelessness, neglect or oversight.

Safety First

Installation

To prevent ignition of hazardous atmospheres,

do not remove actuator cover while circuits are live.

Loaded spring inside actuator. Do not attempt to repair actuator

below top gear plate, unless properly trained on repair methods.

Cam 1

Cam 2

Cam 3

Cam 4

Switch 4

Switch 3

Switch 2

Switch 1

Figure 1

1

g. If the actuator has over-traveled, rotate Cam 2 slightly counter-clockwise, then move the actuator towards the fail

position electrically. Stop and electrically reverse the direction of travel. Move the actuator until Cam 2 operates

Switch 2 and the actuator stops. Repeat this procedure until the actuator is properly positioned.
h. Rotate Cam 4 until it comes in contact with Switch 4’s arm roller and the switch just “breaks”. A light “click” can be

heard. Rotate the cam slightly counter-clockwise. (This ensures that Switch 4 will “break” just prior to the actuator

reaching the extreme opposite end of travel.) Tighten the setscrews on Cams 2 and 4.

Switch adjustments for counter-clockwise spring fail operation (viewed from the top of the actuator)

a. Ensure the actuator is de-energized and positioned in the counter-clockwise (fail) position. Loosen the setscrews on

Cams 2 and 4. Rotate both clockwise until they clear the switch arm rollers of switches 2 and 4.
b. Rotate Cam 2 counter-clockwise until it comes in contact with Switch 2’s roller arm and the switch “breaks”. A light

“click” can be heard. Tighten the setscrews on Cam 2.
c. Rotate Cam 4 counter-clockwise until it comes in contact with Switch 4’s arm roller and the switch just “breaks”. A

light “click” can be heard.
d. Rotate Cam 4 slightly further in the counter-clockwise direction. (This ensures that Switch 4 will ”break” just prior to

the actuator reaching the full fail position.) Tighten the setscrews on Cam 4. Energize the actuator. This will move

the actuator to the opposite end of travel.

e. Upon reaching the opposite end of travel, Cam 1 should just engage the roller on Switch 1 so that the switch just

“breaks”. This action will stop the actuator. Check that the actuator has properly positioned the driven equipment.
f. If actuator travel is insufficient, rotate Cam 1 slightly counter-clockwise until the cam just clears the roller of Switch 1.

As soon as the cam clears the roller, the actuator will “bump” electrically towards the end of travel. Continue until

the actuator reaches the full end of travel.If the actuator has over-traveled, rotate Cam 1 slightly counter-clockwise,

then move the actuator towards the fail position electrically. Stop and electrically reverse the direction of travel.

Move the actuator until Cam 1 operates switch 1 and the actuator stops. Repeat this procedure until the actuator is

properly positioned.
g. If the actuator has over-traveled, rotate Cam 1 slightly clockwise, then move the actuator towards the fail position

electrically. Stop and electrically reverse the direction of travel. Move the actuator until Cam 1 operates switch 1 and

the actuator stops. Repeat this procedure until the actuator is properly positioned.
h. Rotate Cam 3 until it comes in contact with Switch 3’s arm roller and the switch just “breaks”. A light “click” can be

heard. Rotate the cam slightly further in the clockwise direction. (This ensures that Switch 3 will “break” just prior to

the actuator reaching the extreme opposite end of travel.) Tighten the setscrews on Cams 1 and 3.

6. Operate the actuator electrically several times to ensure proper operation and to verify that travel limits and stops are
correctly set.

7. De-energize the actuator to verify proper spring failure operation. Ensure the driven device is properly positioned in the
spring failure position.

8. If the actuator is supplied with an optional feedback potentiometer and/or position controller, verify proper calibration
of input and output signals after making cam adjustments.

9. Replace the actuator cover and cover screws.

10. The actuator is now ready for electrical operation.

2

Closely monitor the electrical stroke, as the travel limit switches

are not yet properly adjusted. Ensure the actuator does not

over-travel and damage the driven equipment.

Closely monitor the electrical stroke, as the travel limit switches

are not yet properly adjusted. Ensure the actuator does not

over-travel and damage the driven equipment.

SURE 49