Planning - Craftsman 139.53910D 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 repairedto
eliminate the gap.
ONE-PIECE DOOR WITHOUT TRACK
FINtSHED CEILING
Support bracket
& fastening
hardware is required.
See page t6.
Safety Reversing Sensor
Header Wall
Rail
Slack in chain tension
is normal when garage
door is closed
Wall-mounted
Door Control
Access E_
Door
O
Safety Reversing
Gap between floor Sensor
and bottom of door must not exceed 1/4" (6 ram).
leader
_all
",
Motor Unit
CLOSED POSIT|ON
Trolley Stop Bolt
Cable Trolley
Emergency
Release
Rope & Handle
ONE-PIECE DOOR WITH TRACK
Safety
Reversing Sensor
ol
Reversing
Gap between floor Sensor
and bottom of door
must not exceed 1/4" (6 ram).
det
CLOSED POSIT_ON
Trolley Stop Bolt Cable Chain
__E23 i i
Header Curved _ Rlail
Bracket Door Ar
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_""- Door I '- I Em,ergency
• Release
Bracket Straight
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7//'j/_ Garage Arm _. Handle
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