Planning - Craftsman 139.53920DM Owner's Manual

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 mm). 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 WlTHOUTTRACK
Header Wall
FINISHED CEILING
Support bracket
& fastening /
hardware is required.
See page t6.
Rail
Slack in chain tension
is normal when
garage door is closed
Wall-mounted
Door Control
Gap between floor Sensor
and bottom of door must not exceed 1/4" (6 ram),
Safety Reversing Sensor
ONE-PIECE DOOR WITH TRACK
,!::TJ
Motor Unit
CLOSED POSITION
I Cable Trolley
Garage Door
Curved
Door
Arm
Emergency
Release
Rope & Handle
Safety
Reversing Sensor
Reversing
Gap between floor Sensor
and bottom of door
must not exceed 1/4" (6 ram),
CLOSED POSITION
Trolley Stop Bolt Cable
B= et DoorAr / L
"J - Door
Bracket Straight
Door
7/2,_ Garage Arm
_A Door
Chain
Rail
Emergency
Release
-- Rope &
Handle