Craftsman 139.53964SRT 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 11.
• Depending on your door's construction, you may
need additional mounting hardware for the door
bracket (Step 11).
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 ram). Otherwise,
the safety reversal system may not work properly.
• The floor or the garage door MUST be repaired to
eliminate the gap.
ONE-PIECE DOOR WITHOUT TRACK
Header Wall
FINISHED CEILING
Support bracket
& fastening
hardware is required.
See page f 7.
Rail
Motor Unit
Access
Door
©
Safety Reversing Sensor
Safety_
Gap between floor Sensor
and bottom of door must not exceed 1/4" (6 ram)
ONE-PIECE DOOR WITH TRACK
Wall-mounted
Door Control
leader
_'all
CLOSED POSITION
Trolley Stop Bolt
Bracket
_r_edD°°r Bracket
Straight Curved
Door Door
Emergency
Release
Rope & Handle
Reversing
Gap between floor Sensor
and bottom of door
Safety must not exceed 1/4" (6 ram)
Reversing Sensor
CLOSED POSITION
Trolley Stop Bolt Belt Trolley
_-Header Cu_ed _
Bracket Door Arm
Door I
_ Bracket Straight
Door
Garage Arm
Emergency
Release
Rope &
Handle
5