MAINTENANCE AND ADJUSTMENTS
Adjustment 1: CH SET LIMIT SWITCHES AND FORCE CONTROLS
Rough Setting of Limit Switches
ASetting 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
BSetting 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
•
Setting Force Controls and Final Adjustment of Limit Switches
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.
ACLOSE 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
–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
•Tighten Limit Switch Set Screw. Do not
Open adjustment next page.
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.
FORCE
CONTROLS
CLOSE
OPEN
CLOSE
OPEN
Figure 9 Making Force Adjustments
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