Chamberlain LiftMaster 2500 User manual

Owner’s Manual
■Please read this manual and the enclosed safety materials carefully!
■Fasten the manual near the garage door after installation.
■The door WILL NOT CLOSE unless the Protector System is connected
and properly aligned.
■Periodic checks of the opener are required to ensure safe operation.
■The model number label is located on the front of your opener.
GARAGE DOOR OPENER
Model 2500
For Residential Use Only
The Chamberlain Group, Inc.
845 Larch Avenue
Elmhurst, Illinois 60126-1196
www.liftmaster.com

2
Introduction 2-5
Safety symbol review and signal word review ............2
Preparing your garage door ........................................
Tools ............................................................................
Planning .....................................................................4
Carton inventory..........................................................5
Hardware inventory .....................................................5
Assembly 6-7
Fasten rail to the motor unit ........................................6
Set the belt tension .....................................................6
Attach the belt cap retainer .........................................7
Installation 7-23
Installation safety instructions .....................................7
Determine the header bracket location....................8-9
Install the header bracket..........................................10
Attach the rail to the header bracket .........................11
Position the opener ...................................................12
Hang the opener .......................................................1
Install the door control...............................................14
Install the lights and lens...........................................15
Attach the emergency release rope and handle .......15
Electrical requirements..............................................16
Install the Protector System®................................17-19
Fasten the door bracket .......................................20-21
Connect the door arm to the trolley .....................22-2
Adjustment 24-26
Program the travel limits ...........................................24
Adjust the force .........................................................25
Test the safety reversal system.................................26
Test the Protector System®........................................26
Operation 27-30
Operation safety instructions.....................................27
Using your garage door opener ................................27
Using the door control ...............................................28
To open the door manually........................................28
Care of your garage door opener..............................29
Having a problem?...............................................29- 0
Programming 31-32
To add a hand-held remote control ........................... 1
To erase all codes ..................................................... 1
-Channel remotes.................................................... 1
To add or change a Keyless Entry PIN..................... 2
Repair Parts 33-34
Rail assembly parts...................................................
Installation parts ........................................................
Motor unit assembly parts ......................................... 4
Accessories 35
Repair Parts and Service 36
Warranty 36
TABLE OF CONTENTS
INTRODUCTION
Safety Symbol Review
When you see these Safety Symbols and Signal
Words on the following pages, they will alert you to
the possibility of serious injury or death if you do
not comply with the warnings that accompany them.
The hazard may come from something mechanical
or from electric shock. Read the warnings carefully.
When you see this Signal Word on the following
pages, it will alert you to the possibility of damage to
your garage door and/or the garage door opener if
you do not comply with the cautionary statements
that accompany it. Read them carefully.
This garage door opener has been designed and tested to offer safe service provided it is installed, operated,
maintained and tested in strict accordance with the instructions and warnings contained in this manual.
Mechanical
Electrical
WARNING
CAUTION WARNING
WARNING
WARNING
CAUTION WARNING
WARNING
WARNING
CAUTION
WARNING
WARNING

Preparing your garage door
Before you begin:
• Disable locks.
• Remove any ropes connected to garage door.
• Complete the following test to make sure your
garage door is balanced and is not sticking or
binding:
1. Lift the door about halfway as shown. Release
the door. If balanced, it should stay in place,
supported entirely by its springs.
2. Raise and lower the door to see if there is any
binding or sticking.
If your door binds, sticks, or is out of balance, call
a trained door systems technician.
To prevent damage to garage door and opener:
• ALWAYS disable locks BEFORE installing and operating
t e opener.
• ONLY operate garage door opener at 120V, 60 Hz to
avoid malfunction and damage.
To prevent possible SERIOUS INJURY OR DEATH:
• ALWAYS call a trained door systems tec nician if
garage door binds, sticks, or is out of balance. An
unbalanced garage door may not reverse w en
required.
• NEVER try to loosen, move or adjust garage door, door
springs, cables, pulleys, brackets or t eir ardware, all
of w ic are under EXTREME tension.
• Disable ALL locks and remove ALL ropes connected to
garage door BEFORE installing and operating garage
door opener to avoid entanglement.
WARNING
CAUTION WARNING
WARNING
WARNING
CAUTION
WARNING
WARNING
Tools needed
During assembly, installation and adjustment of the
opener, instructions will call for hand tools as
illustrated below.
Pliers
Wire Cutters
Claw Hammer
Hack Saw
Screwdriver Adjustable End Wrench
1/2" and 7/16" Sockets
and Wrench
Drill
Tape Measure
2
1
Stepladder
Pencil
/16", 5/16" and
5/ 2" Drill Bits
Carpenter's
Level
Sectional Door
One-Piece Door

Safety
Reversing Sensor
Horizontal and vertical reinforcement
is needed for lightweight garage doors
(fiberglass, steel, aluminum, door with
glass panels, etc.). See page 20 for details.
Support bracket &
fastening hardware
is required.
See page 1
— — — — — — — —
Header Wall
Safety
Reversing
Sensor
FINISHED CEILING
Extension Spring
OR Torsion Spring
Motor unit
Wall-mounted
Door Control
Rail
Access Door
Gap between floor
and bottom of door must not exceed 1/4".
Door
Center
4
SECTIONAL DOOR INSTALLATION
Planning
Identify the type and height of your garage door. Survey your garage area to see if any of the conditions below
apply to your installation. Additional materials may be required. You may find it helpful to refer back to this page
as you proceed with the installation of your opener.
Safety Reversing Sensor
FINISHED CEILING
Support bracket &
fastening hardware
is required. See page 1
Safety
Reversing
Sensor
Header Wall
Access Door
Gap between floor
and bottom of door
must not exceed 1/4".
Motor unit
Wall-mounted
Door Control
Rail
Access
Door
Safety
Reversing Sensor
Safety
Reversing
Sensor
Gap between floor
and bottom of door
must not exceed 1/4".
ONE-PIECE DOOR WITHOUT TRACK
ONE-PIECE DOOR WITH TRACK

5
Straight Door
Arm Section
Curved Door
Arm Section
Header Bracket
UP
CEILING MOUNT ONLY
2-Conductor Bell Wire
White & White/Red
Safety Labels
and
Literature
Remote Control
Transmitter Visor Clip
Door Bracket
SECURITY✚
-Channel Remote Control
(2) Safety Reversing Sensors
(1 Sending Eye and 1 Receiving Eye)
with 2-Conductor White & White/Black
Bell Wire attached
Safety Sensor
Bracket (2)
Light Lens
Belt Cap Retainer
One-Piece
T-rail
Styrofoam
Belt
Pulley Bracket
Belt
Trolley
Multi-Function
Door Control Panel
Model 79LM
LOCK
LIGHT
Your garage door opener is packaged in two cartons
which contain the motor unit and the parts illustrated
below. Note that accessories will depend on the
model purchased. If anything is missing, carefully
check the packing material. Parts may be stuck in the
foam. KEEP THE FOAM INTACT (see page 6.)
Carton Inventory
Hardware Inventory
INSTALLATION HARDWARE
Hex Screw #8 x /8" ( )
Hex Bolt 5/16"-18 x 7/8" (4)
Lag Screw 5/16"-9 x 1-5/8" (2)
Lag Screw 5/16"-18 x 1-7/8" (2)
Self-Threading Screw 1/4"-14x5/8" (2)
Clevis Pin 5/16" x 2- /4" (1)
Clevis Pin 5/16" x 1-1/4" (1)
Clevis Pin 5/16" x 1" (1)
Nut 5/16" - 18 (4)
Lock Washer 5/16" (4)
Screw 6AB x 1-1/4" (2)
Screw 6- 2 x 1" (2)
Insulated Staples ( 0)
Ring Fastener ( )
Handle
Dry Wall Anchors (2)
Rope
Carriage Bolts 1/4" - 20 x 1/2" (2)
Wing Nut 1/4” x 20 (2)

ASSEMBLY STEP 1
Attach the T-Rail to the Motor Unit
To avoid installation difficulties, do not run the
garage door opener until instructed to do so.
• Remove the two washered bolts mounted in top of
motor unit.
• Align T-rail and styrofoam over sprocket. Cut tape
from T-rail, belt and styrofoam.
• REMOVE STYROFOAM.
• Insert both washered bolts through the T-rail into
the motor unit. Tighten bolts securely.
Use only these bolts! Use of any other bolts
will cause serious damage to door opener.
• Position belt over the motor unit sprocket.
6
Motor Unit
Sprocket
Foam Packaging
Washered Bolts
5/16"-18x1/2"
ASSEMBLY STEP 2
Set the Belt Tension
• By hand, thread the spring trolley nut on the threaded
shaft until it is finger tight against the trolley (Figure 1).
Do not use any tools.
• Insert a screwdriver tip into one of the nut ring slots and
brace it firmly against the trolley (Figure 2).
• Place a 7/16" open end wrench on the square
end. Rotate about 1/4 turn until the spring releases
and snaps the nut ring against the trolley (Figure ).
This extends the spring for optimum belt tension.
Trolley
Threaded
Shaft
Spring
Trolley Nut
Trolley
Nut
Ring
Trolley
Threaded
Shaft
Nut Ring
Slots
Trolley
Square End
Figure 1
Figure 2
Nut Ring Trolley Nut Ring Trolley
1" 1-1/4"
BEFORE AFTER RELEASE
Figure 3
To avoid serious damage to opener, ONLY use bolts
mounted in top of motor unit.
WARNING
CAUTION
WARNING
WARNING

ASSEMBLY STEP 3
Attach the Belt Cap Retainer
• Position the belt cap retainer over the opener
sprocket so the two holes in cap align with the two
holes in mounting plate. Attach with #8x /8" hex
screws provided.
You have now finished assembling your garage
door opener. Please read the following warnings
before proceeding to the installation section.
7
Hex Screws
#8x /8"
Belt Cap
Retainer
Opener Sprocket
Mounting Plate
IMPORTANT INSTALLATION INSTRUCTIONS
1. READ AND FOLLOW ALL INSTALLATION WARNINGS
AND INSTRUCTIONS.
2. Install garage door opener only on properly balanced
and lubricated garage door. An improperly balanced
door may not reverse w en required and could result in
SEVERE INJURY or DEATH.
3. All repairs to cables, spring assemblies and ot er
ardware MUST be made by a trained door systems
tec nician BEFORE installing opener.
4. Disable all locks and remove all ropes connected to
garage door BEFORE installing opener to avoid
entanglement.
5. Install garage door opener 7 feet or more above floor.
6. Mount emergency release andle 6 feet above floor.
7. NEVER connect garage door opener to power source
until instructed to do so.
8. NEVER wear watc es, rings or loose clot ing w ile
installing or servicing opener. T ey could be caug t in
garage door or opener mec anisms.
9. Install wall-mounted garage door control:
• wit in sig t of t e garage door
• out of reac of c ildren at minimum eig t of 5 feet
• away from all moving parts of t e door.
10. Place entrapment warning label on wall next to garage
door control.
11. Place manual release/safety reverse test label in plain
view on inside of garage door.
12. Upon completion of installation, test safety reversal
system. Door MUST reverse on contact wit a one-
inc ig object (or a 2x4 laid flat) on t e floor.
To reduce the risk of severe injury or death:
WARNING
CAUTION WARNING
WARNING
INSTALLATION
Hex Screw
#8x /8"
HARDWARE SHOWN ACTUAL SIZE
To avoid possible SERIOUS INJURY to fingers from
moving garage door opener:
• ALWAYS keep and clear of sprocket w ile operating
opener.
• Securely attac sprocket cover BEFORE operating.
WARNING
CAUTION WARNING
WARNING

8
INSTALLATION STEP 1
Determine the Header Bracket
Location
Installation procedures vary according to garage door
types. Follow the instructions which apply to your
door.
SECTIONAL DOOR
AND ONE-PIECE DOOR WITH TRACK
1. Close the door and mark the inside vertical
centerline of the garage door.
2. Extend the line onto the header wall above the
door.
You can fasten the header bracket within 4 feet
of the left or right of the door center only if a
torsion spring or center bearing plate is in the
way; or you can attach it to the ceiling (see
page 10) when clearance is minimal. (It may be
mounted on the wall upside down if necessary,
to gain approximately 1/2".)
If you need to install the header bracket on a 2x4
(on wall or ceiling), use lag screws (not provided)
to securely fasten the 2x4 to structural supports as
shown here and on page 10.
. Open your door to the highest point of travel as
shown. Draw an intersecting horizontal line on the
header wall 2" above the high point. This height
will provide travel clearance for the top edge of the
door.
Proceed to Step , page 10.
To prevent possible SERIOUS INJURY or DEATH:
• Header bracket MUST be RIGIDLY fastened to
structural support on eader wall or ceiling, ot erwise
garage door mig t not reverse w en required. DO NOT
install eader bracket over drywall.
• Concrete anc ors MUST be used if mounting eader
bracket or 2x4 into masonry.
• NEVER try to loosen, move or adjust garage door,
springs, cables, pulleys, brackets, or t eir ardware, all
of w ic are under EXTREME tension.
• ALWAYS call a trained door systems tec nician if
garage door binds, sticks, or is out of balance. An
unbalanced garage door mig t not reverse w en
required.
WARNING
CAUTION WARNING
WARNING
One-piece
door with
horizontal
track
Header Wall
Ceiling
Track
Highest Point
of Travel
Door
2"
Sectional door
with curved
track
Door
Track
Header Wall
Highest Point
of Travel
2"
Finished
Ceiling
Vertical
Centerline
Header
Wall 2x4 Structural
Supports
Vertical
Centerline

9
ONE-PIECE DOOR WITHOUT TRACK
1. Close the door and mark the inside vertical
centerline of your garage door. Extend the line
onto the header wall above door, as shown.
If headroom clearance is minimal, you can install
the header bracket on the ceiling. See page 10.
If you need to install the header bracket on a 2x4
(on wall or ceiling), use lag screws (not provided)
to securely fasten the 2x4 to structural supports
as shown. If installing into masonry, use concrete
anchors (not provided).
2. Open your door to the highest point of travel as
shown. Measure the distance from the top of the
door to the floor. Subtract the actual height of the
door. Add 8" to the remainder. (See Example).
. Close the door and draw an intersecting horizontal
line on the header wall at the determined height.
NOTE: If the total number of inches exceeds the
height available in your garage, use the maximum
height possible, or refer to page 10 for ceiling
installation.
EXAMPLE
Distance from top of door
(at highest point of travel) to floor ...................... 92"
Actual height of door .......................................... -88"
Remainder.......................................................... 4"
Add..................................................................... +8"
Bracket height on header wall............................ =12"
(Measure UP from top of CLOSED door.)
Proceed to Step , page 10.
Header Wall Vertical
Centerline
Vertical
Centerline
of Garage
Door
2x4
Unfinished
Ceiling
2x4
OPTIONAL
CEILING MOUNT
FOR
HEADER BRACKET
Structural
Supports
Door
Highest Point
of Travel
Header Wall
Pivot
Distance
Floor
One-piece door without track:
pivot hardware
Header Wall
Highest Point
of Travel
Door
Floor
Distance
Jamb
Hardware
One-piece door without track:
jamb hardware

10
INSTALLATION STEP 2
Install the Header Bracket
You can attach the header bracket either to the wall
above the garage door, or to the ceiling. Follow the
instructions which will work best for your particular
requirements. Do not install the header bracket
over drywall. If installing into masonry, use
concrete anchors (not provided).
WALL HEADER BRACKET INSTALLATION
• Center the bracket on the vertical centerline with
the bottom edge of the bracket on the horizontal
line as shown (with the arrow pointing toward the
ceiling).
• Mark the vertical set of bracket holes (do not use
the holes designated for ceiling mount). Drill /16"
pilot holes and fasten the bracket securely to a
structural support with the hardware provided.
Lag Screws
5/16"-9x1-5/8"
Highest Point of
Garage Door Travel
Vertical
Centerline
Header
Wall
Garage
Door
UP
CEILING MOUNT ONLY
Wall Mounting Holes
Optional
Wall Mounting Holes
The nail hole is for
positioning only.
You must use lag screws
to mount the header bracket.
UP
CEILING MOUNT ONLY
Door Spring
Header
Bracket
2x4
Structural
Support
Vertical
Centerline
UP
CEILING MOUNT ONLY
Ceiling Mounting Holes
The nail hole is for
positioning only.
You must use lag screws
to mount the header bracket.
UP
Lag Screws
5/16"-9x1-5/8"
Garage Door
Vertical Centerline
Header Wall
– Finished Ceiling –
Header
Bracket
6" Maximum
Vertical
Centerline
Door
Spring
CEILING HEADER BRACKET INSTALLATION
• Extend the vertical centerline onto the ceiling as
shown.
• Center the bracket on the vertical mark, no more
than 6" from the wall. Make sure the arrow is
pointing toward the wall. The bracket can be
mounted flush against the ceiling when clearance
is minimal.
• Mark the side holes. Drill /16" pilot holes and
fasten bracket securely to a structural support with
the hardware provided.
Lag Screw
5/16"-9 x 1-5/8"
HARDWARE SHOWN ACTUAL SIZE

Header Bracket
Belt Pulley Bracket
Foam Packaging
Opener Carton or
Temporary
Support
Header Wall
Garage
Door
Clevis Pin
5 16" x 2-3 4" Ring Fastener
Torsion
Spring
T-Rail
Clevis Pin
5 16"x2-3 4"
Ring Fastener
Header Bracket
Belt Pulley
Bracket
T-Rail
11
HARDWARE SHOWN ACTUAL SIZE
INSTALLATION STEP 3
Attach the T-Rail to the Header
Bracket
• Position the opener on the garage floor below the
header bracket. Use packing material as a
protective base. NOTE: If the door spring is in the
way you’ll need help. Have someone hold the
opener securely on a temporary support to allow
the rail to clear the spring.
• Position the rail bracket against the header
bracket.
• Align the bracket holes and join with a clevis pin
as shown.
• Insert a ring fastener to secure.

12
ONE-PIECE DOOR WITHOUT TRACK
• With the door fully open and parallel to the floor,
measure the distance from the floor to the top of
the door.
• Using a stepladder as a support, raise the opener
to this height.
• The top of the door should be level with the top of
the motor unit. Do not position the opener more
than 2" above this point.
INSTALLATION STEP 4
Position the Opener
Follow instructions which apply to your door type as
illustrated.
SECTIONAL DOOR OR ONE-PIECE DOOR WITH
TRACK
A 2x4 laid flat is convenient for setting an ideal door-
to-rail distance.
• Raise the opener onto a stepladder. You will need
help at this point if the ladder is not tall enough.
• Open the door all the way and place a 2x4 laid flat
on the top section beneath the rail.
• If the top panel hits the trolley when you raise
the door, pull down on the trolley release arm
to disconnect inner and outer sections. Slide the
outer trolley toward the motor unit. The trolley can
remain disconnected until Step 12 is completed.
T-rail
2x4
laid flat
Door
Top of Motor Unit
Header
Bracket
Top of Door
To prevent damage to garage door, rest garage door
opener rail on 2x4 placed on top section of door.
WARNING
CAUTION
WARNING
WARNING
Trolley
Trolley
Release Arm

13
INSTALLATION STEP 5
Hang the Opener
Three representative installations are shown. Yours
may be different. Hanging brackets should be
angled, Figure , to provide rigid support. On
finished ceilings, Figure 2, attach a sturdy metal
bracket to structural supports before installing the
opener. This bracket and fastening hardware are not
provided.
Existing brackets from a previous installation may be
fastened to the sides of the motor unit as in Figures
1 and 2, or to the mounting tabs as shown in
Figure 3. Then continue with step 5 below.
1. Remove from packaging. Measure the distance
from each side of the motor unit to the structural
support.
2. Cut both pieces of the hanging bracket to required
lengths.
3. Drill 3 16" pilot holes in the structural supports.
4. Attach one end of each bracket to a support with
5 16"-18x1-7 8" lag screws.
5. Fasten the opener to the hanging brackets with
5 16"-18x7 8" hex bolts, lock washers and nuts.
6. Check to make sure the rail is centered over the
door (or in line with the header bracket if the
bracket is not centered above the door).
7. Remove the 2x4. Operate the door manually. If
the door hits the rail, raise the header bracket.
8. Grease the top and underside of the rail surface
where the trolley slides with
rail grease.
Lag Screw 5 16"-18x1-7 8"
Hex Bolt
5 16"-18x7 8" Nut 5 16"-18 Lock Washer 5 16"
HARDWARE SHOWN ACTUAL SIZE
Measure
Distance
Lag Screws
5 16"- 18x1-7 8"
Bracket
(Not Provided)
Lag Screws
5 16"-18x1-7 8"
(Not Provided)
Hex Bolts
5 16"-18x7 8"
Lock Washers 5 16"
Nuts 5 16"-18
— FINISHED CEILING —
Hex Bolts
5 16"-18x7 8"
Lock Washers 5 16"
Nuts 5 16"-18
Hex Bolts
5 16"-18x7 8"
Lock Washers 5 16"
Nuts 5 16"-18
Hidden
Support
Structural
Supports
Preferred range of
bra ket pla ement
Preferred range of
bra ket pla ement
Utilizing existing top mount installation
Existing Brackets
Bracket
(Provided)
Figure 1
Figure 2
Figure 3
To avoid possible SERIOUS IN URY from a falling
garage door opener, fasten it SECURELY to structural
supports of the garage. Concrete anchors MUST be used
if installing any brackets into masonry.
WARNING
CAUTION WARNING
WARNING

Bell Wire
Terminal
Screws
Bottom Mounting Hole
Top Mounting Hole
Red Grey
White
To release wire, push in
tab with screwdriver tip
Door Control
Connections
7/16"
Strip wire 7 16"
14
LOCK
LIGHT
Figure 4 REMOVE COVER
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 white cover by gently prying on a side
corner near the top of the cover with a small flat
head screwdriver (Figure 4). 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" 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 bottom tabs and snap on cover. (To remove
cover after mounting, gently pry on a side corner
near the top of the white cover with paper clip or
small flat head screwdriver.)
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 5).
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 7.
Figure 2
To Replace
Insert Bottom Tabs First
PRE-WIRED
INSTALLATION
24 Volt
Bell Wire
LOCK
LIGHT
LOCK
LIGHT
To Replace
Insert Bottom Tabs First
Figure 1 STANDARD
INSTALLATION
Single
Gang Box
Figure 3 MULTI-FUNCTION
DOOR CONTROL (BACK)
Figure 5
To prevent possible SERIOUS IN URY 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 IN URY 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.
WARNING
CAUTION
WARNING
WARNING
Dry Wall Anchors
Insulated
Staples
Screw 6AB x 1-1 4"
(drywall installation)
Screw 6-32 x 1"
(gang box installation)
HARDWARE SHOWN ACTUAL SIZE

15
INSTALLATION STEP 7
Install the Lights and Lens
Press the release tabs on both sides of lens. Gently
rotate lens back and downward until the lens hinge
is in the fully open position. Do not remove the lens.
• Install up to a 100 watt maximum light bulb in each
socket. The lights will turn ON and remain lit for
approximately 4-1 2 minutes when power is
connected. Then the lights will turn OFF.
• Reverse the procedure to close the lens.
• If the bulbs burn out prematurely due to vibration,
replace with a Garage Door Opener bulb.
NOTE: Use only standard light bulbs. The use of
short neck or speciality light bulbs may overheat the
endpanel or light socket.
INSTALLATION STEP 8
Attach the Emergency Release
Rope and Handle
• Thread one end of the rope through the hole in the
top of the red handle so "NOTICE" reads right side
up as shown. Secure with an overhand knot at
least 1" from the end of the rope to prevent
slipping.
• Thread the other end of the rope through the hole
in the release arm of the outer trolley.
• Adjust rope length so the handle is 6 feet above
the floor. Secure with an overhand knot.
NOTE: If it is necessary to cut the rope, heat seal
the cut end with a match or lighter to prevent
unraveling.
Lens Hinge Slots
Release Tab
Lens Hinge
Lens
Release
Tab Slot
Release Tab
Release
Tab Slot
Trolley
NOTICE
Overhand
Knot
Emergency
Release Handle
Rope
Overhand
Knot
Trolley
Release Arm
• To prevent possible SERIOUS IN URY or DEATH from
a falling garage door:
– If possible, use emergency release handle to
disengage trolley ONLY when garage door is
CLOSED. Weak or broken springs or unbalanced
door could result in an open door falling rapidly
and/or unexpectedly.
– NEVER use emergency release handle unless garage
doorway is clear of persons and obstructions.
• NEVER use handle to pull door open or closed. If rope
knot becomes untied, you could fall.
WARNING
CAUTION WARNING
WARNING

INSTALLATION STEP 9
Electrical Requirements
To avoid installation diffi ulties, do not run the
opener at this time.
To reduce the risk of electric shock, your garage door
opener has a grounding type plug with a third
grounding pin. This plug will only fit into a grounding
type outlet. If the plug doesn't fit into the outlet you
have, contact a qualified electrician to install the
proper outlet.
If permanent wiring is required by your lo al
ode, refer to the following pro edure.
To make a permanent connection through the 7 8"
hole in the top of the motor unit (according to local
code):
• Remove the motor unit cover screws and set the
cover aside.
• Remove the attached 3-prong cord.
• Connect the black (line) wire to the screw on the
brass terminal; the white (neutral) wire to the
screw on the silver terminal; and the ground wire
to the green ground screw. The opener must be
grounded.
• Reinstall the cover.
To avoid installation diffi ulties, do not run the
opener at this time.
RIGHT WRONG
Ground Tab
Green
Ground Screw
Ground Wire
Black Wire
PERMANENT WIRING
CONNECTION
White Wire
Black
Wire
To prevent possible SERIOUS IN URY or DEATH from
electrocution or fire:
• Be sure power is not connected to the opener, and
disconnect power to circuit BEFORE removing cover to
establish permanent wiring connection.
• Garage door installation and wiring MUST be in
compliance with all local electrical and building codes.
• NEVER use an extension cord, 2-wire adapter, or
change plug in any way to make it fit outlet. Be sure
the opener is grounded.
WARNING
CAUTION WARNING
WARNING
16

17
Invisible Light Beam
Protection Area
Sensor Beam
6" max.
above floor
Sensor Beam
6" max.
above floor
Fa ing the door from inside the garage
INSTALLATION STEP 10
Install the Protector System®
The safety reversing sensor must be onne ted
and aligned orre tly before the garage door
opener will move in the down dire tion. This is a
required safety devi e and annot be disabled.
IMPORTANT INFORMATION ABOUT THE SAFETY
REVERSING SENSOR
When properly connected and aligned, the safety
reversing sensor will detect an obstacle in the path of
its electronic beam. The sending eye (with an orange
indicator light) transmits an invisible light beam to the
receiving eye (with a green indicator light). If an
obstruction breaks the light beam while the door is
closing, the door will stop and reverse to full open
position, and the opener lights will flash 10 times.
The units must be installed inside the garage so that
the sending and receiving eyes face each other
across the door, no more than 6" above the floor.
Either can be installed on the left or right of the door
as long as the sun never shines directly into the
receiving eye lens.
The mounting brackets are designed to clip onto the
track of sectional garage doors without additional
hardware.
If it is necessary to mount the units on the wall, the
brackets must be securely fastened to a solid
surface such as the wall framing. Extension brackets
(see accessories) are available if needed. If
installing in masonry construction, add a piece of
wood at each location to avoid drilling extra holes in
masonry if repositioning is necessary.
The invisible light beam path must be unobstructed.
No part of the garage door (or door tracks, springs,
hinges, rollers or other hardware) may interrupt the
beam while the door is closing.
• Be sure power is not connected to the garage door
opener BEFORE installing the safety reversing sensor.
• To prevent SERIOUS IN URY or DEATH from a closing
garage door:
– Correctly connect and align the safety reversing
sensor. This required safety device MUST NOT be
disabled.
– Install the safety reversing sensor so beam is NO
HIGHER than 6" above garage floor.
WARNING
CAUTION WARNING
WARNING

18
FLOOR MOUNT (RIGHT SIDE)
WALL MOUNT (RIGHT SIDE)
DOOR TRACK MOUNT (RIGHT SIDE)
Indicator
light
Lens
Lip
Sensor
Bracket
Door
Track
Sensor
Bracket
Extension
Bracket
(See Accessories)
Lens
Indicator
light
Attach with
concrete anchors
(not provided)
Inside
Garage
Wall
Indicator
light
Sensor
Bracket
Lens
Extension
Bracket
(See Accessories)
Inside
Garage
Wall
(Provided with
Extension
Bracket)
(Provided with
Extension Bracket)
(Provided with
Extension
Bracket)
(Provided with
Extension Bracket)
Figure 3 Floor Mount (Right Side)
Figure 1 Door Tra k Mount (Right Side)
Figure 2 Wall Mount (Right Side)
INSTALLING THE BRACKETS
Be sure power to the opener is dis onne ted.
Install and align the brackets so the sensors will face
each other across the garage door, with the beam no
higher than 6" above the floor. They may be installed
in one of three ways, as follows.
Garage door track installation (preferred):
• Slip the curved arms over the rounded edge of
each door track, with the curved arms facing the
door. Snap into place against the side of the track.
It should lie flush, with the lip hugging the back
edge of the track, as shown in Figure 1.
If your door track will not support the bracket
securely, wall installation is recommended.
Wall installation:
• Place the bracket against the wall with curved arms
facing the door. Be sure there is enough clearance
for the sensor beam to be unobstructed.
• If additional depth is needed, an extension bracket
(see Accessories) or wood blocks can be used.
• Use bracket mounting holes as a template to locate
and drill (2) 3 16" diameter pilot holes on the wall at
each side of the door, no higher than 6" above the
floor.
• Attach brackets to wall with lag screws
(not provided).
• If using extension brackets or wood blocks, adjust
right and left assemblies to the same distance out
from the mounting surface. Make sure all door
hardware obstructions are cleared.
Floor installation:
• Use wood blocks or extension brackets (see
Accessories) to elevate sensor brackets so the
lenses will be no higher than 6" above the floor.
• Carefully measure and place right and left
assemblies at the same distance out from the wall.
Be sure all door hardware obstructions are cleared.
• Fasten to the floor with concrete anchors as shown.
Wing Nut
1 4"-20 Staples
Carriage Bolt
1 4"-20x1 2"
HARDWARE SHOWN ACTUAL SIZE

19
Invisible Light Beam
Protection Area
Sensor
Sensor
Bell Wire
Bell Wire Finished
Ceiling
Quick-Connect Terminals
Strip wire 7 16"
7 16"
Sensor
Connections
Connect Wire to
Quick-Connect Terminals
Red
Grey
White
White black
wire
White
wire
Carriage bolt
1 4"-20x1 2" Lens
Wing nut
Figure 4
Figure 5
MOUNTING AND WIRING THE SAFETY SENSORS
• Slide a 1 4"-20x1 2" carriage bolt head into the slot
on each sensor. Use wing nuts to fasten sensors to
brackets, with lenses pointing toward each other
across the door. Be sure the lens is not obstructed
by a bracket extension (Figure 4).
• Finger tighten the wing nuts.
• Run the wires from both sensors to the opener. Use
insulated staples to secure wire to wall and ceiling.
• Strip 7 16" of insulation from each set of wires.
Separate white and white black wires sufficiently to
connect to the opener quick-connect terminals: white
to white and white black to grey (Figure 5).
ALIGNING THE SAFETY SENSORS
• Plug in the opener. The indicator lights in both the
sending and receiving eyes will glow steadily if
wiring connections and alignment are correct.
The sending eye orange indicator light will glow
regardless of alignment or obstruction. If the green
indicator light in the receiving eye is off, dim, or
flickering (and the invisible light beam path is not
obstructed), alignment is required.
• Loosen the sending eye wing nut and readjust,
aiming directly at the receiving eye. Lock in place.
• Loosen the receiving eye wing nut and adjust sensor
until it receives the sender’s beam. When the green
indicator light glows steadily, tighten the wing nut.
TROUBLESHOOTING THE SAFETY SENSORS
1. If the sending eye indicator light does not glow
steadily after installation, check for:
• Electric power to the opener.
• A short in the white or white black wires. These
can occur at staples, or at opener connections.
• Incorrect wiring between sensors and opener.
• A broken wire.
2. If the sending eye indicator light glows steadily but
the receiving eye indicator light doesn't:
• Check alignment.
• Check for an open wire to the receiving eye.
3. If the receiving eye indicator light is dim, realign
either sensor.
NOTE: When the invisible beam path is obstructed
or misaligned while the door is closing, the door will
reverse. If the door is already open, it will not close.
The opener lights will blink 0 times. (If bulbs are not
installed, 0 clicks can be heard.) See page 7.

20
INSTALLATION STEP 11
Fasten the Door Bracket
Follow instructions which apply to your door type
as illustrated below or on the following page.
A horizontal reinfor ement bra e should be long
enough to be se ured to two or three verti al
supports. A verti al reinfor ement bra e should
over the height of the top panel.
Figure 1 shows one piece of angle iron as the
horizontal brace. For the vertical brace, 2 pieces of
angle iron are used to create a U-shaped support.
The best solution is to check with your garage door
manufacturer for an opener installation door
reinforcement kit.
NOTE: Many door reinforcement kits provide for
direct attachment of the clevis pin and door arm. In
this case you will not need the door bracket; proceed
to Step 2.
SECTIONAL DOORS
1. Center the door bracket on the previously marked
vertical centerline used for the header bracket
installation. Note correct UP placement, as
stamped inside the bracket.
2. Position the top edge of the bracket 2"-4" below
the top edge of the door, OR directly below any
structural support across the top of the door.
3. Mark, drill holes and install as follows, depending
on your door’s construction:
Metal or lig t weig t doors using a vertical angle
iron brace between t e door panel support and
t e door bracket:
• Drill 3 16" fastening holes. Secure the door bracket
using the two 1 4"-14x5 8" self-threading screws.
(Figure 2A)
• Alternately, use two 5 16" bolts, lock washers and
nuts (not provided). (Figure 2B)
Metal, insulated or lig t weig t factory reinforced
doors:
• Drill 3 16" fastening holes. Secure the door bracket
using the self-threading screws (Figure 3).
Wood Doors:
• Use top and bottom or side to side door bracket
holes. Drill 5 16" holes through the door and secure
bracket with 5 16"x2" carriage bolts, lock washers
and nuts (not provided). (Figure 4)
NOTE: The /4"- 4x5/8"
self-threading screws are
not intended for use on
wood doors.
To prevent damage to garage door, reinforce inside of
door with angle iron both vertically and horizontally.
WARNING
CAUTION
WARNING
WARNING
Vertical
Centerline
Door
Bracket
Location
Header
Bracket
HORIZONTAL AND VERTICAL
REINFORCEMENT IS NEEDED
FOR LIGHTWEIGHT GARAGE
DOORS (FIBERGLASS,
ALUMINUM, STEEL, DOORS
WITH GLASS PANEL, ETC).
(NOT PROVIDED)
Door
Bracket
Vertical
Centerline
UP
Vertical
Reinforcement
Self-Threading
Screw
1 4"-14x5 8"
Door
Bracket
Nut
5 16"-18
Bolt
5 16"-18x2"
Lock Washer
5 16"
Vertical
Centerline
UP
Vertical
Reinforcement
(Not Provided)
UP
Vertical
Centerline
Self-Threading
Screw
1 4"-14x5 8"
UP
Inside Edge
of Door or
Reinforcement Board
Bolt
5 16"x2"
Vertical
Centerline
(Not Provided)
Figure 1
Figure 2A
Figure 2B
Figure 3
Figure 4
Self-Threading
Screw
1 4"-14x5 8"
HARDWARE
SHOWN
ACTUAL SIZE