Adjustments; Set Limit Switches/Force Controls; Limit Switches - Genie 2020L Series Operation And Maintenance Manual

Ac powered chain driven garage door opener
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Coarse Setting of Limit Switches
A
Setting Close Limit Switch
Check that Carriage Assembly is disengaged.
With garage door fully closed, slide Close Limit Switch
until it is aligned with the center of the
Carriage Assembly .
Tighten Set Screw. Do Not over-tighten.
B
Setting Open Limit Switch
Manually open garage door to full open position.
Slide Open Limit Switch until it is aligned with the center
of the Carriage Assembly .
Tighten Set Screw. Do not over-tighten.
Re-engage Carriage Assembly.
Setting Force Controls and Final Adjustment of

Limit Switches

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 .
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, pages 10 and 11 .
• 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 .
For Help, call 1-800-35-GENIE or visit www.geniecompany.com
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WARNING
NOTE
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 .
B
OPEN ADjUSTMENT
On front panel of Power Head find adjusting
screw marked "OPEN" (Figure 9) .
Gently turn screw counterclockwise until it stops .
Very little force is required to turn
adjusting screw .
Press Wall Console to open garage door .
Observe if door stops at "OPEN" limit switch .
If door is fully open—adjustment is finished .
If door stops but is not fully open,
a .
Measure distance between bottom of
door and top of door opening .
b .
Move "OPEN" Limit Switch that same
distance toward Power Head .
If door stops before reaching the "OPEN"
Limit Switch
a .
Slightly increase OPEN Force
setting (clockwise) .
If door fails to move, see Troubleshooting
Section, pages 10 & 11 .
C
Run Door Opener
Cycle opener a few times to double check
settings . Repeat adjustment steps as necessary .
OPEN
FORCE
LOCATED
UNDER
LIGHT
COVER
CLOSE
FORCE
Figure 9 Making Force Adjustments
(Located Lower Right Corner) .
7

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