Craftsman 139.53918d 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 SERIOUSLYINJURED
or KILLED by a closing garage door.
• The gap between the bottom of the garage door and the
floor MUST NOTexceed 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
FINISHED
_-'_ Header Wall
drt1 I
Safety Reversing Sensor
& fastening
hardware is required.
See page t6,
I
Rail
/
Access
Door
Safety Reversing
Sensor
Gap between floor
and bottom of door must not exceed 1/4" (6 mm).
Wall-mounted
Door Control
_eader
Vail
Motor Unit
CLOSED POSITION
Trolley Stop Bolt
Belt Trolley
i
i
Straight
Door Door
Arm Arm
Garage
Door
Emergency
Release
Rope & Handle
ONE-PIECE DOOR WITH TRACK
let
Reversing
Gap between floor Sensor
i Safety and bottom of door
Reversing Sensor must not exceed 1/4" (6 ram),
Header
Wall
CLOSED POSff[ON
Trolley Stop Bolt Belt Trolley
I --
S'_-Head_r Curved
Bracket Door Arm _j- /
idh,. °°°°°°1°°°°°)_
Door I
_////'_ Bracket Straight
"//A Door
///'A-- Garage Arm
_/I Door
Rail
-- Emergency
Release
Rope &
Handle