Chamberlain Power Drive PD210CD - Page 5

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).
ONE-PIECE DOOR WITHOUT TRACK
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
Gap between fl oor and bottom of
door must not exceed 1/4" (6 mm).
Safety Reversing Sensor
Safety Reversing Sensor
Access
Door
Wall-mounted
Door Control
Header Wall
Slack in chain tension
is normal when garage
door is closed.
Rail
Support bracket &
fastening hardware is
required. See page 15.
FINISHED CEILING
CLOSED POSITION
Cable
Rail
Rail Tab
Header Bracket
Door Bracket
Straight
Door Arm
Header
Wall
Garage Door
Trolley
Emergency
Release
Rope &
Handle
Curved
Door Arm
ONE-PIECE DOOR WITH TRACK
Gap between fl oor and bottom of
door must not exceed 1/4" (6 mm).
Safety Reversing
Sensor
Safety Reversing Sensor
Access
Door
CLOSED POSITION
Straight
Door Arm
Emergency
Release
Rope &
Handle
Cable
Chain
Rail Tab
Rail
Garage
Door
Door
Bracket
Curved
Door Arm
Header
Bracket
Header
Wall