Planning - Chamberlain WHISPER DRIVE WD822KD 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).
ONE-PIECE DOOR WITHOUT TRACK
Header Wall
Gap between fl oor and
Safety Reversing bottom of door must not
exceed 1/4" (6 mm).
Sensor
ONE-PIECE DOOR WITH TRACK
Gap between fl oor and
bottom of door must not
Safety Reversing
exceed 1/4" (6 mm).
Sensor
FINISHED CEILING
Support bracket &
fastening hardware
is required.
See page 15.
Rail
Wall-mounted
Door Control
Access
Door
Safety Reversing
Sensor
Header
Access Wall
Door
Safety
Reversing
Sensor
5
Without a properly working safety reversal system,
persons (particularly small children) could be
SERIOUSLY INJURED or KILLED by a closing garage
door.
• The gap between the bottom of the garage door and
the fl oor MUST NOT exceed 1/4" (6 mm). Otherwise,
the safety reversal system may NOT work properly.
• The fl oor or the garage door MUST be repaired to
eliminate the gap.
Motor unit
Trolley
Stop Bolt
Header
Bracket
Door Bracket
Header
Garage
Wall
Door
CLOSED POSITION
Trolley
Trolley Stop Bolt
Belt
Curved
Header
Door Arm
Bracket
Door
Straight
Bracket
Door
Garage
Arm
Door
CLOSED POSITION
Trolley
Belt
Rail
Emergency
Release
Rope &
Curved
Straight
Handle
Door
Door Arm
Arm
Rail
Emergency
Release
Rope &
Handle