One-Piece Door Installations - Craftsman 139.54920 Manual Del Propietário

Planning (Continued)

ONE-PIECE DOOR INSTALLATIONS

Generally, a one-piece door does not require reinforcement. If
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your door is lightweight, refer to the information relating to
sectional doors in Installation Step 8.
Depending on your door's construction, you may need
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additional mounting hardware for the door bracket
(Installation Step 8).
ONE-PIECE DOOR WITHOUT TRACK
Header Wall
Gap between floor
and bottom of door must
Safety Reversing
not exceed 1/4" (6 mm).
Sensor
ONE-PIECE DOOR WITHOUT TRACK
Gap between floor
and bottom of door
must not exceed
Safety
1/4" (6 mm).
Reversing Sensor
Rail
Wall-Mounted
Door Control
Access
Door
Safety Reversing
Sensor
Access
Door
Header
Wall
Safety
Reversing Sensor
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
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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
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the gap.
Motor Unit
CLOSED POSITION
Rail Tab
Belt
Header
Rail
Bracket
Door Bracket
Straight
Door
Arm
Header
Garage
Wall
Door
CLOSED POSITION
Rail Tab Trolley
Belt
Curved
Header
Door Arm
Bracket
Door
Bracket Straight
Door
Garage
Arm
Door
5
Trolley
Emergency
Release
Rope & Handle
Curved
Door
Arm
Rail
Emergency
Release
Rope &
Handle