Chamberlain LiftMaster PROFESSIONAL SECURITY+ 2500DC Manuel D'instructions page 14

WARNING
CAUTION
INSTALLATION STEP 6
Install the Door Control
Locate door control within sight of the door at a
minimum height of 5 feet where small children cannot
reach, and away from moving parts of the door and
door hardware. The installation surface must be
smooth and flat. If installing into drywall (Figure 1),
drill 5/32" holes and use anchors provided. For
pre-wired installations (as in new home construction),
it may be mounted to a single gang box (Figure 2).
NOTE: After installation, a green or amber indicator
light behind the cover will indicate proper connection.
If not lit, the Lock and Light features will not function
(reverse wires to correct).
1. Strip 7/16" of insulation from one end of bell wire
and connect to the two screw terminals on back of
door control by color: white wire to WHT and
white/red wire to the RED (Figure 3).
2. Remove cover by gently prying at slot in top of the
cover with a small flat head screwdriver. Fasten
with 6ABx1-1/4" self-tapping screws (drywall
installation) or 6-32x1" machine screws (into gang
box) as follows:
• Drill and install bottom screw, allowing 1/8" (3 mm)
to protrude above wall surface.
• Position bottom of door control on screw head and
slide down to secure. Adjust screw for snug fit.
• Install top screw with care to avoid cracking plastic
housing. Do not overtighten.
• Insert top tabs and snap on cover.
NOTE: The push bar may stick if the door control is
not mounted on a smooth surface. If a click is not
heard when pressing the push bar, loosen the two
mounting screws or relocate the door control to a
smoother surface.
3. (Standard installation only) Run bell wire up wall
and across ceiling to motor unit. Use insulated
staples to secure wire in several places. Do not
pierce wire with a staple, creating a short or open
circuit.
4. Strip 7/16" of insulation from end of bell wire.
Connect bell wire to the quick-connect terminals as
follows: white to white and white/red to red (Figure 4).
5. Use tacks or staples to permanently attach
entrapment warning label to wall near door control,
and manual release/safety reverse test label in a
prominent location on inside of garage door.
NOTE: DO NOT connect the power and operate the
opener at this time. The trolley will travel to the full
open position but will not return to the close
position until the sensor beam is connected and
properly aligned. See Safety Reversing Sensor
Instructions beginning on page 17.
To prevent possible SERIOUS INJURY or DEATH from
electrocution:
• Be sure power is not connected BEFORE installing door
control.
• Connect ONLY to 24 VOLT low voltage wires.
To prevent possible SERIOUS INJURY or DEATH from a
closing garage door:
• Install door control within sight of garage door, out of
reach of children at a minimum height of 5 feet, and away
from all moving parts of door.
• NEVER permit children to operate or play with door
control push buttons or remote control transmitters.
• Activate door ONLY when it can be seen clearly, is
properly adjusted, and there are no obstructions to door
travel.
• ALWAYS keep garage door in sight until completely
closed. NEVER permit anyone to cross path of closing
garage door.
HARDWARE SHOWN ACTUAL SIZE
Screw 6ABx1-1/4"
(std installation)
Screw 6-32x1"
(pre-wired installation)
STANDARD WALL MOUNT
To Replace
Insert Top
Tabs First
Detector
Push Bar Cover
Switch
Figure 1
Top
24 Volt
Mounting
Bell Wire
Hole
Door
Control
Terminal
Screws
Bottom
Mounting
Hole
(BACK VIEW)
Figure 3
To release wire, push in
tab with screwdriver tip
Strip wire 7/16"
Figure 4
14
WARNING
WARNING
Insulated
Staples
Drywall Anchors
ON
OFF
PRE-WIRED INSTALLATION
24 Volt Bell Wire
To Replace
Insert Top
Tabs First
Push Bar Cover
Figure 2
Door Control
Connections
7/16"
White
Red
Detector
ON
Switch
OFF
Grey