Chamberlain Whisper Drive Security+ WD962KCD Manuel D'instructions page 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 12.
• Depending on your door's construction, you may need
additional mounting hardware for the door bracket
(Step 12).
ONE-PIECE DOOR WITHOUT TRACK
Header Wall
Gap between fl oor and
Safety Reversing
bottom of door must not
Sensor
exceed 1/4" (6 mm).
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 16.
Rail
Wall-mounted
Door Control
Access
Door
Safety Reversing
Sensor
Header
Wall
CLOSED POSITION
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
CLOSED POSITION
Rail Tab
Rail
Header Bracket
Door Bracket
Straight Door Arm
Garage Door
Rail Tab
Belt
Curved
Header Bracket
Door Arm
Door
Straight Door Arm
Bracket
Garage Door
Trolley
Belt
Emergency
Release Rope
& Handle
Curved
Door Arm
Trolley
Rail
Emergency
Release Rope
& Handle