7
d.
Rotate Cam 1 (and Cam 3) clockwise until it engages the
switch roller and the switch just “breaks”. You should hear
a light click.
e.
Tighten the setscrew on Cam 1.
f.
If auxiliary switches were provided, rotate Cam 3 about 2
degrees in the clockwise direction. Then tighten the
setscrew. This will ensure that Switch 3 “makes” when the
actuator reaches the full open position.
g.
Rotate the Open Stop Bolt clockwise until it “bottoms out”
against the worm segment inside the worm gear assembly.
Then rotate 1 full turn counter-clockwise.
h.
If travel is not correct, repeat steps (a) through (e).
Close (clockwise) direction of travel:
a.
Loosen setscrew on Cam 8 (and Cam 10 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 “closed” (CW)
position.
c.
Rotate Cam 8 (and Cam 10) 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 8.
e.
If auxiliary switches were provided, rotate Cam 10 about 2
degrees in the counter-clockwise direction. Then tighten
the setscrew. This will ensure that Switch 10 “makes”
when the actuator reaches the full open position.
f.
Rotate the Close Stop Bolt clockwise until it “bottoms out”
against the worm segment inside the worm gear assembly.
Then rotate 1 full turn counter-clockwise.
g.
If travel is not correct, repeat steps (a) through (e).
Replace the cover and tighten all flange bolts.
Replace manual handwheel, pin, washer and bolt.
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 the close
switch stack (switches 8 and 10).
b.
If the actuator has not reached the full open position,
rotate the micro-adjustmen cam to swing the switch
outward (away) from the cams.
c.
If the actuator has over-traveled, move the switch inward
(toward) the cams.
d.
Tighten pivot and micro-adjustment screws on.
To set the close (clockwise) direction of travel by adjusting
the switch plate:
a.
Loosen Pivot and Micro-adjustment screws on the open
switch stack (switches 1 and 3).
b.
If the actuator has not reached the full open position,
rotate the micro-adjustment cam to swing the switch
outward (away) from the cams.
c.
If the actuator has over-traveled, move the switch inward
(toward) the cams.
d.
Tighten pivot and micro-adjustment screws.
Replace the cover and tighten all flange bolts.
Replace manual handwheel, pin, washer and bolt.
The actuator is now ready for electrical operation.
Cam 10
Switch 3
Cam 8
Switch 1
Switch 10
Switch 8
Cam 3
Cam 1
Close Stop Bolt
Open Stop Bolt
Actuator Shown in Full Open Position
Open
(CCW)
Close
(CW)
CAUTION
To prevent ignition of hazardous atmospheres, do not
remove actuator cover while curcuits are live.
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