LM DOM 902LM 903LM

LM DOM 902LM 903LM
WARNING
WARNING
CAUTION
WARNING
MODELS • 902LM • 903LM
OWNERS INSTRUCTIONS
The two and three garage door multi-function control
panel is designed to replace multiple door control buttons
on LiftMaster Security✚ garage door openers. It can be
used as a replacement stand alone unit or in conjunction
with the original factory door control buttons. Never
connect more than two control panels or door control
buttons to any one garage door opener.
Multi-Function
Door Control Panel
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.
Quick-Connect™ Terminals
Door Control
Button
Lock
Button
Door
Control
Button
Figure 1
Light Button
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
Wire white wire to White-1 and red/white wire to Red-1
• Middle Door – Door B
Wire white wire to White-2 and red/white wire to Red-2
Note: Model 902 LM will only have A and C terminals.
• Right Door – Door C
Wire white wire to White-3 and red/white wire to Red-3
NOTE: If replacing existing wall controls, labeling the existing
wires with masking tape might be helpful (i.e. Door A, Door B,
Door C).
1. Prior to installation, remove all door control buttons, and the
center panel on model 902LM.
2. 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. White to WHITE 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.
3. 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 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 button may stick if the door control is
not mounted on a smooth surface. If a click is not heard when
pressing the door control button, loosen the two mounting
screws or relocate the door control to a smoother surface.
After installation, an orange indicator light behind the door
control buttons will indicate proper connection. If not lit, the Lock
and Light features will not function (reverse wires to correct).
Terminal
Screws
Terminal
Screws
Bottom Mounting
Holes
2-Conductor
Bell Wire
902LM
Terminal
Screws
Terminal
Screws
Terminal
Screws
Bottom Mounting
Holes
903LM
Figure 2
Gently
Twist
Top
2-Conductor
Bell Wire
FOR WALL BOARD (DRYWALL) MOUNT
Remove the center panel on the 902LM and all door control
buttons on 902LM and 903LM 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 panel on the 902LM and all door control
buttons on 902LM and 903LM 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.
To Replace Insert Bottom Tabs First
Figure 4
Enlarged
View
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, 21/2, 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
manual or go to www.liftmaster.com.
114A2633C
Single
Gang Box
24 Volt
Bell Wire
NOTE: Mounting hardware is included for each type of
installation (use all four screws if desired).
USING THE DOOR CONTROL
Enlarged
View
Figure 3
To Replace Insert Bottom Tabs First
Figure 5
Quick-Connect™ Terminals
Door Control
Connections
KG
Red White Black
7/16"
Strip wire 7/16"
Opener Terminal Screws
1
2
3
BACK PANEL
Figure 6
© 2002, The Chamberlain Group, Inc.
All Rights Reserved
Lock
Button
Light
Button
Lock
Button
Light
Button
Printed in China
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