Dresser RCS Sure 100 Installation Manual

RCS Sure 100
Installation Manual
Safety First
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.
CAUTION
To prevent the ignition of hazardous atmospheres,
do not remove actuator cover while circuits are live.
CAUTION
Loaded spring inside actuator. Do not attempt to
repair actuator below top gear plate, unless properly
trained on repair methods.
Installation
Note: SurePowr actuators can be supplied for clockwise or counter-clock-
wise 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 orientated 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.
Note: Ensure the driven device is properly positioned in its full fail position. If
it is not, use the adjustable end of travel stop on the Sure 100 (see figure 4) to
properly adjust the fail end of travel stop. Only the fail end of travel may be
adjusted. Loosen the lock nut to free the adjusting screw, then use a wrench
to turn the screw. The total adjustment available is +/- 5 degrees.
Figure 1
Switch adjustments for clockwise spring fail
operation (viewed from the top of the actuator)
a. Ensure actuator is de-energized and positioned in the clock
wise (fail) position. Ensure the end of travel stop is properly
adjusted. Loosen the jam nut, and then rotate the screw
clockwise to move the actuator output shaft in a
counter-clockwise direction. Rotate the screw
in a counter-clock wise direction to move the actuator
output shaft in a clockwise direction. 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. Use care
to not over-tighten the set screws.
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. Use care to not over-tighten
the set screws.Tighten the setscrews on Cam 3. Energize the
actuator. Use care to not over-tighten the set screws. This will
move the actuator to the opposite end of travel.
CAUTION
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.
RCS Actuators