Chamberlain LIFTMASTER PROFESSIONAL 902LM User manual

To prevent possible SERIOUS INJURY or DEATH from electrocution:
• e sure power is not connected EFORE 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.
MODELS • 902LM • 903LM
OWNERS INSTRUCTIONS
The two and three garage door mu ti-function contro pane
is designed to rep ace mu tip e door contro buttons on
LiftMaster Security✚garage door openers. It can be used as
a rep acement stand a one unit or in conjunction with the
origina factory door contro buttons. Never connect more
than two contro pane s or door contro buttons to any one
garage door opener.
INSTALLATION
Product may be mounted directly to wall board or, for pre-wired
installations (as in new home construction), it may be mounted to
a single gang box. In either case the installation surface must
be smooth and flat.
The door orientation goes from left to right, and wiring is as
follows:
• Left Door – Door A
ire white wire to hite-1 and red/white wire to Red-1
• Midd e Door – Door B
ire white wire to hite-2 and red/white wire to Red-2
Note: Model 902 LM will only have A and C terminals.
• Right Door – Door C
ire white wire to hite-3 and red/white wire to Red-3
NOTE: If replacing existing wall controls, la eling the existing
wires with masking tape might e helpful (i.e. Door A, Door B,
Door C).
1. Strip 7/16" of insulation from one end of bell wire and connect
to the corresponding two screw terminal on back of door
control by color. Figure 1. hite to HITE and red/white to
RED. Be careful to wrap the exposed wire tightly around the
screw and tighten. The exposed wire must not come into
contact with exposed solder points. The Mylar insulator is
there to prevent this from happening. Do not remove this
insulator.
2. 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.
3. Strip 7/16" of insulation from opposite end of bell wire.
Connect bell wire to the Quick-Connect™ terminals located on
garage door opener as follows: white to white and white/red to
red. Figure 5.
NOTE: The door control utton may stick if the door control is
not mounted on a smooth surface. If a click is not heard when
pressing the door control utton, loosen the two mounting
screws or relocate the door control to a smoother surface.
After installation, an orange indicator light ehind the door
control uttons will indicate proper connection. If not lit, the Lock
and Light features will not function (reverse wires to correct).
Quick-Connect™ Terminals
Multi-Function
Door Control Panel
Door Control
Push Button
Light Button
Lock
Button Door
Control
Button
WARNING
CAUTION
WARNING
WARNING
2-Conductor
Bell ire
Terminal
Screws
Terminal
Screws
Bottom Mounting
Holes
Figure 1
902LM
2-Conductor
Bell ire
Terminal
Screws
Terminal
Screws
Terminal
Screws
Bottom Mounting
Holes
903LM
Gently
Twist
Top
Figure 2

© 2002, The Chamberlain Group, Inc.
114A2633B All Rights ReservedPrinted in China
Opener Terminal Screws
23
1
BACK PANEL
Quick-Connect™ Terminals
7/16"
Strip wire 7/16"
Door Control
Connections
Red Black
hite
KG
To Replace Insert Bottom Tabs First
Single
Gang Box
24 Volt
Bell ire
Enlarged
View
Figure 5
Figure 4
FOR WALL BOARD (DRYWALL) MOUNT
Remove the left and right door control buttons by gently twisting
at the top with a small flat blade screwdriver exposing the
horizontal installation holes. Figure 2. Mark and drill wall board.
Drill 7/32" holes and use anchors provided. Fasten with 1-1/4"
self-tapping screws. Do not overtighten. Insert bottom tabs and
snap on door control buttons. Figure 3.
FOR MOUNTING ONTO A SINGLE ELECTRICAL GANG BOX
Remove the center cover or door control button by gently prying
at slot in top of the door control button with a small flat blade
screwdriver exposing two installation holes. Figure 2. For
flexibility, this wall control can be mounted either left or right of
center directly over gang box. Use 6-32X1" machine screws.
Install bottom screw, allowing 1/8" to protrude above wall
surface. Position bottom of door control on screw head and slide
down to secure. Adjust screw for snug fit. Install matching top
machine screw. Do not overtighten. Insert bottom tab and snap
center cover or door control button. Figure 4.
NOTE: Mounting hardware is included for each type of
installation (use all four screws if desired).
USING THE DOOR CONTROL
Press the door control button to open or close the door. Press
again to reverse the door during the closing cycle or to stop the
door while it's opening.
Light feature: Press the Light button to turn the opener light on
or off. Figure 6. It will not control the opener lights when the door
is in motion. If you turn it on and then activate the opener, the
light will remain on for 4-1/2 minutes. Press again to turn it off
sooner. On units that have the adjustable light feature the 4-1/2
minute interval can be changed to 1-1/2, 2-1/2, or 3-1/2 minutes
as follows: Press and hold the Lock button until the light blinks
(about 10 seconds). A single blink indicates that the timer is
reset to 1-1/2 minutes. Repeat the procedure and the light will
blink twice, resetting the timer to 2-1/2 minutes. Repeat again for
a 3-1/2 minute interval, etc., up to a maximum of four blinks and
4-1/2 minutes.
Lock feature: Designed to prevent operation of the door from
hand-held remote controls. However, the door will open and
close from the Door Control, the Outside Keylock and the
Keyless Entry Accessories.
To activate, press and hold the Lock button for 2 seconds.
Figure 6. The door control button light will flash as long as the
Lock feature is on.
To turn off, press and hold the Lock button again for
2 seconds.The door control button light will stop flashing. The
Lock feature will also turn off whenever the “Smart” (learn)
button on the motor unit panel is activated.
NOTE: The lock and light features will work properly on
Security
✚ garage door openers manufactured after 1997.
For further product information refer to your owner’s
manua or go to www. iftmaster.com
Lock
Button
Light
Button
Lock
Button
Light
Button
Figure 6
To Replace Insert Bottom Tabs First
Enlarged
View
Figure 3