Before you begin, survey your garage area to see whether any of the conditions below apply to your installation.
Horizontal and vertical reinforcement is needed for lightweight garage doors (fiberglass, steel, aluminum,
door with glass panels, etc.).
See page 20 for details.
Header Wall
FINISHED CEILING Support bracket & fastening hardware is required.
See page 13.
Slack in belt tension
is normal when
garage door is closed.
— — —
Door Center
— — —
— —
Extension Spring
OR
Torsion Spring
Access Door
Safety
Reversing
Sensor
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| Floor must be level | Model 1702LMC Outside Quick Release |
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| Safety | across width of door | is required if there is no access door. |
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| Reversing Sensor |
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Slack in belt tension is normal when garage door is closed
Header
Wall
FINISHED CEILING Support bracket
&fastening hardware may be required.
See page 13.
Slack in belt tension
is normal when
garage door is closed. 
Access Door
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| Access |
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| Door |
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| Safety |
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| Gap between floor | Reversing |
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| Sensor |
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Safety | and bottom of door |
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Reversing | must not exceed 1/4". |
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| Safety |
Sensor |
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| Safety | Floor must be level Reversing Sensor |
You may find it helpful to refer back to this page as | across width of door | |||
you proceed with the installation of your opener. | Reversing Sensor |
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