Installation Guide

Turning OFF power.
• Turn power OFF at circuit breaker (or remove fuse).
For new construction go to step 5.
Important Notes - Please read before installing.
1. CAUTION: Use only with permanently-installed 120 V halogen or incandescent fixtures.
To avoid overheating and possible damage to other equipment, do not use to control
receptacles, fluorescent lighting fixtures, low-voltage lighting fixtures, motor-driven appli-
ances, or transformer-supplied appliances.
2. Install in accordance with all national and local electrical codes.
3. DO NOT use Maestro
®
dimmers for compact fluorescent (Energy Saver) lamps.
4. Dimmer requires separate wires in the wallbox for each light circuit.
5. Do not use for lights switched from two or more locations (3-Way or 4-Way).
6. When no “grounding means” exist within the wallbox then the NEC
®
2008, Article 404.9
allows a dimmer without a grounding connection to be installed as a replacement, as long
as a plastic, noncombustible wallplate is used. For this type of installation, cap or remove
the green ground wire on the dimmer and use an appropriate wallplate such as Lutron’s
Claro
®
or Satin Colors
®
series wallplates.
7. For new installations, install a test switch before installing the dimmer.
8. Protect control from dust and dirt when painting or spackling.
9. Unit will not operate with less than 40 W of load on each channel.
10.It is normal for the dimmer to feel warm to the touch during operation.
11.Clean dimmer with a
soft damp cloth only . Do not use any chemical cleaners.
12. Operate between 32 °F (0 °C) and 104 °F (40 °C).
13. Recommended wallbox depth is 2.5 in (64 mm) minimum.
Multigang Installation
When combining controls in a wallbox, remove all inner side sections before wiring (see
below). Use pliers to bend each side section up and down until it breaks off. Repeat for each
side section to be removed. Reduction of dimmer capacity is also required. Refer to chart
below for maximum capacity.
Break Side
Sections
120 V Halogen/Incandescent Dual Dimmer
MA-L3L3
Rated at 120 V 60 Hz 300 W per dimmer
English
Lutron Electronics Co., Inc.
7200 Suter Road
Coopersburg, PA 18036-1299, U.S.A.
Made and printed in U.S.A.
9/09 P/N 030-1105 Rev. A
030-1105
030-1105
Do Not Remove Outside Sections
Inside Sections
Are Removed
From Each Control
Dimmer Capacity Chart
Side Sections Are
Removed From Both
Sides Of Middle Control
Limited Warranty
(Valid only in U.S.A., Canada, Puerto Rico, and the Caribbean.)
Lutron will, at its option, repair or replace any unit that is defective in materials or manufacture within one year after purchase. For warranty service, return unit to
place of purchase or mail to Lutron at 7200 Suter Rd., Coopersburg, PA 18036-1299, postage pre-paid.
THIS WARRANTY IS IN LIEU OF ALL OTHER EXPRESS WARRANTIES, AND THE IMPLIED WARRANTY OF MERCHANTABILITY IS LIMITED TO ONE YEAR
FROM PURCHASE. THIS WARRANTY DOES NOT COVER THE COST OF INSTALLATION, REMOVAL OR REINSTALLATION, OR DAMAGE RESULTING FROM
MISUSE, ABUSE, OR DAMAGE FROM IMPROPER WIRING OR INSTALLATION. THIS WARRANTY DOES NOT COVER INCIDENTAL OR CONSEQUENTIAL DAM-
AGES. LUTRON’S LIABILITY ON ANY CLAIM FOR DAMAGES ARISING OUT OF OR IN CONNECTION WITH THE MANUFACTURE, SALE, INSTALLATION, DELIV-
ERY, OR USE OF THE UNIT SHALL NEVER EXCEED THE PURCHASE PRICE OF THE UNIT.
This warranty gives you specific legal rights, and you may have other rights which vary from state to state. Some states do not allow the exclusion or limita-
tion of incidental or consequential damages, or limitation on how long an implied warranty may last, so the above limitations may not apply to you. This
product may be covered by one or more of the following U.S. patents: 5,248,919; 5,399,940; 5,637,930; 6,169,377; 7,190,125; 7,365,282; D539,234 and corre-
sponding foreign patents. U.S and foreign patents pending. Lutron, Claro, Maestro and Satin Colors are registered trademarks and FASS is a trademark of
Lutron Electronics Co., Inc. NEC is a registered trademark of the National Fire
Protection Association, Quincy, Massachusetts.
© 2009 Lutron Electronics Co., Inc.
?
Technical Assistance
If you have questions concerning the installation or operation of this product, call the
Lutron Technical Support Center . Please provide exact model number when call-
ing.
U.S.A. and Canada (24 hrs/7days)
1.800.523.9466
México +1.888.235.2910
Other countries (8am – 8pm ET)
+1.610.282.3800
Fax [phone]
http://www.lutron.com
ON
OFF
ON
OFF
ON
OFF
Installation
For installations involving more than one control in a wallbox, refer to
Multigang Installation before beginning.
Separate wires are required in the wallbox for each light circuit.
11
22
Removing wallplate and switch.
• Remove the wallplate and switch mounting screws.
• Carefully remove switch from wall (do not remove wires).
33
Verify application.
• This dimmer controls two lights independently. Independent wires must be
provided for each light.
44
Disconnecting switch wires.
Important Note: Your wall switch may have two wires attached to the same
screw (see illustrations below for examples). Tape these two wires together
before disconnecting. When wiring, connect wires to the Dimmer the same way
they were connected to the switch.
55
Wiring the Control.
• Connect the tagged wire
removed from the switch to
the black screw terminal on
the Control.
• The top brass screw terminal
(Dimmer Channel 1) is controlled
by the top set of buttons.
Determine which wire should be
controlled by the top buttons and
connect it to this screw terminal.
• Connect the remaining wire
removed from the switch to the
remaining brass screw terminal
(Dimmer Channel 2).
• Use wire connectors to connect
the green ground wire on the
Control to the bare copper or
green ground wire in the wallbox,
and to cap any unused wires.
Lutron Technical Support Center 1.800.523.9466 24 hrs / 7 days www.lutron.com
• Tag the wire that is connected to the
feed side of the switch (the side with
the break-off fin).
Identify Side with
Break-off fin
Tag
Brass
screws
Black
screw
Green
Wire
Tag
Ground
Wire
66
Mounting Control(s) to wallbox.
• Form wires carefully into wallbox, mount and align control(s).
• Install the wallplate(s).
ON
OFF
ON
OFF
ON
OFF
77
Turning ON power.
• Turn power ON at circuit breaker (or
replace fuse).
Operation
Light Level Tap Buttons
• Tap once when lights are off -
Lights brighten smoothly to preset intensity.
• Tap once when lights are on -
Lights dim smoothly to off.
• Tap twice quickly - Lights brighten
rapidly to full intensity.
• Press and hold when lights are on -
Activates delayed fade to off mode. As the tap but-
ton is held, the LEDs will begin to flash. The first
flashing LED represents a 10 second fade to OFF.
Each additional flashing LED represents an addi-
tional 10 seconds of delay before lights fade OFF
(up to 60 seconds delay).
Light Level LEDs
• Indicates approximate
light level.
LEDs may not change
with each press.
Press to increase light level
Press to decrease light level
Troubleshooting
Symptoms
Light does not work or no LEDs
turn on.
Top and bottom switches
control wrong load.
Dimmer behaves erratically
Tap switch does not work at
brightest level.
Possible Causes
• Light bulbs burned out.
• Breaker is off or tripped.
• Dimmed Channel not connected to load.
• Front Accessible Service Switch ( FASS ) on Control is pulled
out to the OFF position.
• Wires going to the 2 brass screws are reversed.
• Live wire is connected to a brass screw. Fix wiring error to ensure
FASS removes power to both loads.
• Load is less than 40 W.
FASS
TM
- Front
Accessible Service
Switch
IMPORTANT NOTICE:
To replace a bulb, remove power by pulling the
FASS switch out on the Control. For any proce-
dure other than routine bulb replacement,
power must be disconnected at the main
electrical panel.
Brass
Brass
Live
Black
Neutral
Tag
Ground
Light
Light
120 V~
60 Hz
• If you prefer the top and
bottom dimmers to operate
the same lights as before,
note which output wires go
to the top and bottom switches and
install them in the same
relative positions in Step 5.
To learn about the Advanced Features of Maestro
Dimmers including locked preset and adjustable fade
times, please visit:
www.lutron.com/maestro/advfeatures or call the
Lutron Technical Support Center at 1.800.523.9466.
Dimmer Channel 1
Dimmer Channel 2
Important Wiring Information
Trim or strip wallbox wires to the length
indicated by the strip gauge on the back of
the dimmer.
Push-in Terminals: Insert
wires fully.
Push-in terminals are for use
with 14 AWG (1.5 mm
2
)
solid copper wire only .
DO NOT use stranded
or twisted wire.
Screw Terminals: Tighten
securely.
Screw terminals are for
use with 12 or 14 AWG
(2.5 or 1.5 mm
2
) solid copper
wire only .
DO NOT use stranded or
twisted wire.
OR
WARNING: Shock Hazard. May result in serious injury or death.
Turn off power at circuit breaker before installing the unit.
Snap on Claro
wallplate.
Start screws.
Screw Terminals:
Turn screws to loosen.
Push-in Terminals:
Insert screwdriver. Pull wire out.
One wire in the
push-in terminal and
one to the screw.
One continuous wire
to the screw.
Align control and
tighten screws.
Load
120 V Halogen /
Incandescent
No Sides
Removed
300 W / 300 W
1 Side
Removed
250 W / 250 W
2 Sides
Removed
200 W / 200 W
To verify the control is correctly wired, test to make sure that each dimmer is working properly.
If any unexpected behavior occurs, check the troubleshooting guide.
Note: Do not overtighten mounting screws.
Permanent damage may occur.