Craftsman 139.53992D Owner's Manual page 5

Planning (Continued)
ONE-PIECE DOOR INSTALLATIONS
• Generally, a one-piece door does not require
reinforcement. If your door is lightweight, refer to
the information relating to sectional doors in
Installation Step 12.
• Depending on your door's construction, you may
need additional mounting hardware for the door
bracket (Step 12).
Without a properly working safety reversal system,
persons (particularly small children) could be
SERIOUSLYINJUREDor 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 repairedto
eliminate the gap.
ONE-PIECE DOOR WITHOUT TRACK
Support bracket
& fastening
hardware is required.
See page 19.
Header Wall
Rail
Motor unit
---_Safety Reversing Sensor
Wall-mounted
Door Control
Access _q Door
o
Safet
Sensor
Gap between floor
and bottom of door must not exceed 1/4" (6 mm).
Rail
Bracket
CLOSED POSmON
Rail Assembly
" Header
Bracket
Door
Bracket
Garage
Door
Trolley
l
Straight Curved
Door Door
Arm Arm
Emergency
Release
Rope & Handle
ONE-PIECE DOOR WITH TRACK
J_
afety
Reversing Sensor
Access I
Door
ol
\ Safety
Gap between floor Reversing
and bottom of door Sensor
must not exceed 1/4" (6 mm).
CLOSED POSmON
Rail Trolley
Bracket
Garage
Door
Header Curved _ I
Bracket Door Arm _-fl_ Rail Assembly
....... I.... jj I
Dr°aOrke t Stlraight J
Door
Arm Emergency Release
Rope & Handle