Planning - Craftsman 139.53930DM 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 NOTexceed 1/4" (6 mm). Otherwise, the safety
reversal system may NOTwork properly.
• The floor or the garage door MUST be repaired to eliminate
the gap.
ONE-PIECE DOOR WITHOUT TRACK
FINISHED CEILING
Support bracket
& fastening
hardware is required.
See page 16.
Safety Reversing Sensor
Header Wail
Rail
Slack in chain tension
is normal when garage
door is closed.
I
Access
Door
O
Gap between floor
Safety Reversing
Sensor
Wall-mounted
Door Control
and bottom of door must not exceed 1/4" (6 mm).
Motor Unit
leader
Vail
CLOSED POSITION
Rail Tab
Cable Trolley
Bracket Rail
Door Bracket
Curved
Door Door
Arm Arm
-- Garage Door
Emergency
Release
Rope & Handle
ONE-PIECE DOOR WITH TRACK
J
Safety Reversing Sensor
Safety Reversing
Gap between floor and bottom of door
must not exceed 1/4" (6 mm).
CLOSED POSITION
Rail Tab Cable Trolley Chain
Header
Bracket Ra,,
ooooooooooo) _ _ Emergency
/ Curved I Release
f/XIDoor Straight _,'_'rvt_r_ _ Rope &
Y_/_---_BraeketDoorArm L,ccr_m j Handle
_'/J__ Garage _L
Y.//I Door