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9
C
H SET LIMIT SWITCHES AND
FORCE CONTROLS
Adjustment 1:
Rough Setting of Limit Switches
A Setting Close Limit Switch (Figure 9):
• Check that Carriage Assembly is disengaged.
• With garage door fully closed,slide Close Limit Switch
toward Carriage until white lever is fully lifted.
• Tighten Set Screw. Do Not over-tighten.
B Setting Open Limit Switch:
• Manually open garage door to full open position.
• Slide Open Limit Switch toward Carriage until white lever
is fully lifted.
• Tighten Set Screw. Do not over-tighten.
• Re-engage Carriage Assembly.
Setting Force Controls and Final Adjustment of
Limit Switches
A CLOSE ADJUSTMENT
• On front panel of Power Head find adjusting screw
marked “CLOSE” (Figure 9).
• Gently turn screw counterclockwise until it stops.
– Very little force is required to turn adjusting screw.
• Press Wall Console to close garage door.
– Observe if door stops at “CLOSE”limit switch.
If door is fully closed—adjustment is finished.
Go to “OPEN”Adjustment.
– If door stops but is not fully closed,
a. Measure distance between bottom of door
and floor.
b. Move“CLOSE”Limit Switch that same distance
toward door.
– If door stops and/or reverses before reaching the
“CLOSE”Limit Switch
a.
Slightly increase CLOSE Force setting (clockwise).
– If door reverses after contacting floor, move Limit
Switch toward Power Head.
– If door fails to move,check Safe-T-Beam® System.See
Troubleshooting Section,page 14.
• Tighten Limit Switch Set Screw.Do not over-tighten
(strip) Limit Switch Set Screw.
Open adjustment next page.
WARNING
• The garage door opens rapidly, and can cause serious
injury or death.
• Keep the path clear.
• Position the ladder to the side of the Power Head so it is
clear of all moving parts of the Opener and the door.
• Set the door Opener to use the minimum force needed
to open the door.
NOTE
• Little effort is required to turn the Force
Adjusting Knobs.
• If the door stops moving while opening or
closing, adjust the Open Force or Close Force
Controls
slightly clockwise (to slightly
increase the force) and retry the step.
• The Open Force and Close Force Controls are to
be set to the
minimum force necessary to
ensure the door smoothly opens and
closes completely.
• Ensure the Carriage Assembly is engaged and is
between the two Limit Switches before
operating the Opener.
Figure 9 Making Force Adjustments
OPE
N
C
L
OS
E
OPEN
CLOS
E
FORCE
CONTROLS
MAINTENANCE AND ADJUSTMENTS
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