3
f.
If travel is not correct, repeat steps (a) through (e).
Replace cover by screwing in a clockwise direction. Ensure the
cover is tight.
The actuator is now ready for electrical operation.
Cam Adjustment–Group 9:
MAR/DCR10, 50, 90–Part Turn Models
(old style)
Cam adjustments (if required), as follows:
Open (counter-clockwise) direction of travel:
a.
Loosen setscrew on Cam 7 (and Cam 9 for auxiliary
switches) to give the cam(s) a finger tight grip on the
shaft. Rotate cam (s) in a clockwise direction away from
the switch.
b.
Manually move the actuator to the full “open” (CCW)
position.
c.
Rotate Cam 7 (and Cam 9) counter-clockwise until it
engages the switch roller and the switch just “breaks”. You
should hear a light click.
d.
Tighten the setscrew on Cam 7.
e.
If auxiliary switches were provided, rotate Cam 9 about 2
degrees in the counter-clockwise direction. Then tighten
the setscrew. This will ensure that Switch 9 “makes” when
the actuator reaches the full open position.
f.
If travel is not correct, repeat steps (a) through (e).
Close (clockwise) direction of travel:
a.
Loosen setscrew on Cam 2 (and Cam 4 for auxiliary
switches) to give the cam(s) a finger tight grip on the
shaft. Rotate cam(s) in a counter-clockwise direction away
from the switch.
b.
Manually move the actuator to the full “close” (CW)
position.
c.
Rotate Cam 2 (and Cam 4) clockwise until it engages the
switch roller and the switch just “breaks”. You should hear
a light click.
CAM 4
CAM 3
CAM 2
CAM 1
d.
Tighten the setscrew on Cam 2.
e.
If auxiliary switches were provided, rotate Cam 4 about 2
degrees in the clockwise direction. Then tighten the
setscrew. This will ensure that Switch 4 “makes” when the
actuator reaches the full open position.
f.
If travel is not correct, repeat steps (a) through (e).
Replace the cover and tighten all flange bolts.
Replace manual de-clutching knob and tighten setscrew.
The actuator is now ready for electrical operation.
Note:
In the event that the above procedure does not give the
necessary travel control, the micro-adjustment cam must
be repositioned as follows:
To set the open (counter-clockwise) direction of travel by
adjusting the switch plate:
a.
Loosen Pivot and Micro-adjustment screws on Switch 7.
b.
If the actuator has not reached the full open (CCW)
position, rotate the micro-adjustment cam to swing the
switch outward (away) from Cam 7.
c.
If the actuator has over-traveled, move the switch inward
(toward) Cam 7.
d.
Tighten pivot and micro-adjustment screws on Switch 7.
To set the close (clockwise) direction of travel by adjusting
the switch plate:
a.
Loosen Pivot and Micro-adjustment screws on Switch 2.
b.
If the actuator has not reached the full close (CW)
position, rotate the micro-adjustment cam to swing the
switch outward (away) from Cam 2.
c.
If the actuator has over-traveled, move the switch inward
(toward) Cam 2. Tighten pivot and micro-adjustment
screws on Switch 2.
Replace the cover and tighten all flange bolts.
Replace manual de-clutching knob and tighten setscrew.
The actuator is now ready for electrical operation.
Pivot Screws
Cam 2
Switch 2
Switch 7
Cam 7
Micro-Adjustment Cams
Micro-Adjustment Screws (inside)
CAUTION
To prevent ignition of hazardous atmospheres, do not
remove actuator cover while curcuits are live.
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