Planning
Identify the type and height of your garage door. Survey your garage area to see if any of the conditions below apply to your installation. Additional materials may be required. You may find it helpful to refer back to this page and the accompanying illustrations as you proceed with the installation of your opener.
Without a properly working safety reversal system, persons (particularly small children) could be SERIOUSLY INJURED or KILLED by a closing garage door.
•The gap between the bottom of the garage door and the floor MUST NOT exceed 1/4" (6 mm). Otherwise, the safety reversal system may not work properly.
•The floor or the garage door MUST be repaired to eliminate the gap.
SECTIONAL DOOR INSTALLATION
Horizontal and vertical reinforcement is needed for lightweight garage doors
(fiberglass, steel, aluminum, door with glass panels, etc.). See page 18 for details.
Slack in chain tension is normal when garage door is closed.
FINISHED CEILING
Support bracket & fastening hardware is required.
See page 11.
Header Wall
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Gap between floor and bottom of door must not exceed 1/4"
Safety Reversing Sensor
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Torsion Spring | Wall- | ||||
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Safety
Reversing
Sensor
| Header | Chain Pulley |
| CLOSED POSITION |
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| Door |
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| Release |
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| Door |
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Header |
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Wall | Door Bracket |
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Garage |
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Door |
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