Craftsman 139.53985D Manual Del Propietário página 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 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
Header Wall
FINISHED CEILING
Suppo_ bracket
& fastening
hardware is required.
See page 16.
Rail
Slack in chain tension
is normal when garage
door is closed.
Motor Unit
Safety Reversing Sensor
n
Safety Reversing
Sensor
Gap between floor
and bottom of door must not exceed 1/4" (6 mm).
Wall-mounted
Door Control
bader
Vail
CLOSED POSITION
Trolley Stop Bolt
I Cable Trolley
Straight Curved
Door Door
Arm Arm
Garage Door
Emergency
Release
Rope & Handle
ONE-PIECE DOOR WITH TRACK
Reversing
Gap between floor Sensor
J and bottom of door
Safety must not exceed 1/4" (6 mm).
Reversing Sensor
CLOSED POSITION
Trolley Stop Bolt Cable
Curved _
--HeaderBracket DoorArm_Z / L_
Door°°°°°°° ....
)j
/_ Bracket Straight Door
/_/i_ Garage Arm
///I Door
Chain
Rail
Emergency
Release
- Rope &
Handle