Chamberlain POWER DRIVE PD420 User manual

GARAGE DOOR OPENER
Models PD420 • PD420-2 • PD460-2
1/2 HP
For Residential Use Only
®
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.
™

2
Introduction Pages 2-7
Safety symbol and signal word review........................2
Preparing your garage door........................................3
Tools needed...............................................................3
Planning ..................................................................4-5
Carton inventory..........................................................6
Hardware inventory.....................................................7
Assembly Pages 8-11
Assemble the rail .....................................................8-9
Fasten rail to motor unit and install the trolley..........10
Attach the rail brackets..............................................11
Installation Pages 11-27
Installation safety instructions....................................11
Determine the header bracket location................12-13
Install the header bracket..........................................14
Attach the rail to the header bracket.........................15
Install the Protector System®................................16-18
Position the opener...................................................19
Hang the opener .......................................................20
Install the door control and connect wiring ...............21
Electrical requirements..............................................22
Complete the sensor installation...............................22
Install the lights and lens...........................................23
Attach the emergency release rope and handle.......23
Fasten the door bracket.......................................24-25
Connect the door arm to the trolley.....................26-27
Adjustment Pages 28-30
Adjust the travel limits...............................................28
Adjust the force.........................................................29
Test the safety reversal system.................................30
Test the Protector System®........................................30
Operation Pages 31-34
Operation safety instructions.....................................31
Using your garage door opener................................31
Using the wall-mounted door control ........................32
To open the door manually........................................32
Care of your garage door opener..............................33
Having a problem?....................................................34
Programming Pages 35-36
To add a hand-held remote control...........................35
To erase all codes.....................................................35
Multi-function remotes...............................................35
To add or change a Keyless Entry PIN.....................36
Repair Parts Pages 37-38
Rail assembly parts...................................................37
Installation parts........................................................37
Motor unit assembly parts.........................................38
Accessories 39
Repair Parts and Service 40
Warranty 40
TABLE OF CONTENTS
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.
Mechanical
Electrical
WARNING
WARNING
CAUTION
INTRODUCTION
Safety Symbol
and Signal Word Review
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.

3
Pliers
Wire Cutters
Claw Hammer
Hack Saw
Screwdriver
1/2" & 7/16" Sockets
and Wrench
Drill
Tape Measure
1/2" x 7/16" Box Wrench
2
1
Stepladder
Pencil
3/16", 5/16"
and 5/32" Drill Bits
Carpenter’s
Level
To prevent damage to garage door and opener:
• ALWAYS disable locks before installing and operating
the 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 technician if
garage door binds, sticks, or is out of balance. An
unbalanced garage door may not reverse when
required.
• NEVER try to loosen, move or adjust garage door, door
springs, cables, pulleys, brackets or their hardware, all
of which 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.
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.
Tools needed
During assembly, installation and adjustment of the
opener, instructions will call for hand tools as
illustrated below.
WARNING
CAUTION
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 24 for details.
Support bracket &
fastening hardware
is required.
See page 20
— — — — — — — —
Door Center
Header Wall
Safety
Reversing
Sensor
Gap between floor
and bottom of door
must not exceed 1/4"
FINISHED CEILING
Torsion
Spring
Access
Door
Motor unit
Wall-
mounted
Door
Control
Rail
Extension
Spring
OR
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 and the accompanying
illustrations as you proceed with the installation of
your opener.
Depending on your requirements, there are several
installation steps which may call for materials or
hardware not included in the carton.
• Installation Step 1 – Look at the wall or ceiling
above the garage door. The header bracket must
be securely fastened to structural supports.
• Installation Step 6 – Do you have a finished ceiling
in your garage? If so, a support bracket and
additional fastening hardware may be required.
• Installation Step 4 – Depending upon garage
construction, extension brackets or wood blocks
may be needed to install sensors.
• Installation Step 4 – Alternate floor mounting of the
safety reversing sensor will require hardware not
provided.
• Do you have an access door in addition to the
garage door? If not, Model 7702CB Outside Quick
Release is required. See Accessories page.
• Look at the garage door where it meets the floor.
Any gap between the floor and the bottom of the
door must not exceed 1/4". Otherwise, the safety
reversal system may not work properly. See
Adjustment Step 3. Floor or door should be
repaired.
SECTIONAL DOOR INSTALLATIONS
• Do you have a steel, aluminum, fiberglass or glass
panel door? If so, horizontal and vertical reinforce-
ment is required (Installation Step 12).
• The opener should be installed above the center of
the door. If there is a torsion spring or center
bearing plate in the way of the header bracket, it
may be installed within 4 feet to the left or right of
the door center. See Installation Steps 1 and 12.
• If your door is more than 7 feet high, see rail
extension kits listed on Accessories page.
Header
Bracket Rail
Bracket
Trolley
Straight
Door
Arm
Emergency
Release
Rope & Handle
Door
Bracket
Garage
Door
Curved
Door
Arm
Garage
Door
Spring
Header
Wall
Rail Assembly
CLOSED POSITION

Access
Door
Safety
Reversing Sensor
Safety
Reversing
Sensor
Header
Bracket
Door
Bracket Straight
Door
Arm
Curved
Door Arm
Trolley
Emergency Release
Rope & Handle
Rail Assembly
Garage
Door
Header
Wall Rail
Bracket
CLOSED POSITION
Gap between floor
and bottom of door
must not exceed 1/4"
5
Planning (Continued)
ONE-PIECE DOOR INSTALLATIONS
• Generally, a one-piece door does not require
reinforcement. If your door is lightweight, refer to
the information relating to sectional doors in
Installation Step 12.
• Depending on your door’s construction, you may
need additional mounting hardware for the door
bracket (Step 12).
Safety Reversing
Sensor
FINISHED CEILING
Support bracket
& fastening
hardware is required.
See page 20.
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
ONE-PIECE DOOR WITHOUT TRACK
CLOSED POSITION
Header
Bracket Trolley
Straight
Door
Arm
Emergency
Release
Rope & Handle
Door
Bracket
Curved
Door
Arm
Header
Wall
Rail Assembly
Garage
Door
Rail
Bracket
ONE-PIECE DOOR WITH TRACK
Without a properly working safety reversal system,
persons (particularly small children) could be
SERIOUSLY INJURED or KILLED by a closing garage
door.
• The gap between the bottom of the garage door and
the floor MUST NOT exceed 1/4". Otherwise, the safety
reversal system may not work properly.
• The floor or the garage door MUST be repaired to
eliminate the gap.
WARNING

6
Light Lens
Straight Door
Arm Section
Curved Door
Arm Section
Header Bracket
UP
CEILING MOUNT ONLY
Sprocket
Coupling
2-Conductor Bell Wire
White & White/Red
Header/Rail
Brackets
Remote Control
Transmitter Visor Clip
Trolley
Rail Support
Braces (4)
Hanging Brackets
Rail
Assembly
Door Bracket
Model 420 (1),
Model 420-2 (2)
SECURITY✚
Multi-Function
Remote Control Transmitter
Multi-Function
Door Control Panel
LOCK
LIGHT
Safety Labels
and
Literature
(2) Safety Reversing Sensors
(1 Sending Eye and 1 Receiving Eye)
with attached 2-Conductor
White & White/Black Bell Wire Safety Reversing Sensor
Mounting Bracket (2)
SECURITY✚
Single Function
Remote Control Transmitter
Model 460 (2)
Your garage door opener is packaged in one carton which contains 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 10.) Hardware for
assembly and installation is shown on the next page. Save the carton and packing material until installation and
adjustment is complete.
Carton Inventory

Hardware Inventory
Separate all hardware and group as shown below for the assembly and installation procedures.
7
Lock Nut
1/4"-20 x 7/16 (12)
Wing Nut (2)
Carriage Bolt
1/4"-20x1/2" (2)
1/4" - 20 x 5/8"
Hex Screw (4) Sprocket Coupling Sleeve
Bolt
1/4-20x1-3/4" (8)
NOTICE
Handle
Nut 5/16"-18 (4)
Ring
Fastener (3)
Clevis Pin
5/16"x2-3/4" (1)
Insulated
Staples (30)
Dry Wall Anchors (2)
Clevis Pin
5/16"x1" (1)
Rope
Self-Threading Screw
1/4"-14x5/8" (2)
Lock Washer 5/16" (4)
Lag Screw
5/16"-9x1-5/8" (2) Hex Screw 5/16"-18x7/8" (4)
Clevis Pin
5/16"x1-1/4" (1)
Lag Screw
5/16"-18x1-7/8" (2) Screw
6ABx1-1/4" (2) Screw 6-32x1" (2)
ASSEMBLY HARDWARE
INSTALLATION HARDWARE

8
ASSEMBLY STEP 1
Assemble the Rail
To avoid installation difficulties, do not run the
garage door opener until instructed to do so.
1.Turn the opened rail carton upside down and
empty its contents onto a level work surface.
2.Unfold the rails, taking care to avoid kinking the
screw rod joint.
3.Rotate the rail sections so that the flat side is down
and the screw side is up for all three lengths. Keep
it clean and free of debris while you are working.
Center
Rail
Trolley Rack
Extend
End Rails
Outward
Extend
End Rails
Outward
Rail Assembly
Carton
Remove
Cardboard Packing
Remove
Cardboard
Packing
Rail
Support
Braces
Straight
Door Arm
Rail Assembly
Hardware Bag Chassis Assembly Hardware Bag
Center Rail
Door End Rail
Rail
Sprocket
Trolley Rack
Sprocket End Rail
Rotate
NOTE: During assembly, avoid pulling the rail section
housing the trolley rack away from the screw rod.
The rack is factory set about 9" from the end of the
screw rod to the center of the rack.
If the plastic liner slides part way out during
assembly, simply push it back in.

9
Assemble the Rail (Continued)
4.Beginning with the sprocket end, straighten the
two rail sections so that the screw rod is in a
straight line at the joint. (Avoid handling the joint,
which may have sharp edges.)
5.Carefully slide the pins at the top edge of the rail
into the openings on the adjacent rail. It is
essential that the rail assembly be on a level
surface to achieve proper alignment and to
avoid damage to the pins.
6.Insert two 1/4"-20x1-3/4" bolts through the center
holes of a brace, and place its open length against
the rail at the joint, aligning the holes as shown.
Position another brace on the opposite side of the
rail over the bolts, add 1/4"-20 lock nuts, and hand
tighten. Insert two additional bolts and hand
tighten.
7.Keeping the rail straight and on a level surface,
grasp the screw rods on each side of the
remaining joint and pivot into a straight line.
Repeat steps 5 and 6.
8.With a 7/16 wrench, tighten bolts until snug,
beginning with the center holes. Do not
overtighten.
Center Rail
Slide end rail
toward center rail
Rail
Support
Brace
Lock
Nuts
Center
Rail
Rail Pin
Alignment
Hole
Rail
Support
Brace
Rail Pin
Rail Pin
Alignment
Hole
Alignment
Hole
1/4x20x1-3/4"
Bolts
1/4x20x1-3/4"
Bolts
Lock
Nuts
End
Rail
Door End
(Front)
Sprocket End
(Back)
Slide end rail
toward center rail
1/4"-20
Lock Nut
Bolt
1/4-20x1-3/4" (4)
HARDWARE SHOWN ACTUAL SIZE

ASSEMBLY STEP 2
Fasten the Rail To the Motor Unit
and Install the Trolley
To aid in assembly and installation, replace the foam
packing around the motor unit. Remove it after Installation
Step 5.
• Working on a level surface, align the rail assembly with
the motor unit, as shown.
• Slip the coupling over the rail sprocket.
• Slide the rail through the motor unit bracket until the
coupling fits securely over the motor unit sprocket.
• Align the two screw holes in the rail with those in the
motor unit bracket. Insert two 1/4"-20x5/8" hex screws
and lock nuts. Tighten securely with a 7/16" socket
wrench.
• Slide the trolley onto and along the bottom of the rail
until it snaps firmly in place. Be certain to install it
facing correctly: the trolley release arm must be
horizontal (lock position), with its arrow pointed
away from the motor unit.
10
Rail
Sprocket
Rail
Assembly
Trolley
Coupling
Motor Unit
Bracket
Lock Nuts
1/4"-20
Motor Unit
Sprocket
Foam Packaging
Hex Screws
1/4"-20x5/8"
Release arm
Arrow must point
toward garage door
1/4" - 20
Lock Nut
1/4" - 20 x 5/8"
Hex Screw
HARDWARE SHOWN ACTUAL SIZE

ASSEMBLY STEP 3
Attach the Rail Brackets
• Align rail brackets to end of rail assembly, as
shown.
• Insert two 1/4"-20 x 5/8" hex screws and lock nuts.
Tighten securely with a 7/16" socket.
You have now finished assembling your garage
door opener. Please read the following warnings
before proceeding to the installation section.
11
Rail
Brackets
Rail
1/4"-20
Lock Nuts
1/4"-20x5/8
Hex
Screws
1/4" - 20
Lock Nut
1/4" - 20 x 5/8"
Hex Screw
HARDWARE SHOWN ACTUAL SIZE
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 when required and could result in
severe injury or death.
3. All repairs to cables, spring assemblies and other
hardware MUST be made by a trained door systems
technician 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 handle 6 feet above floor.
7. NEVER connect garage door opener to power source
until instructed to do so.
8. NEVER wear watches, rings or loose clothing while
installing or servicing opener. They could be caught in
garage door or opener mechanisms.
9. Install wall-mounted garage door control:
• within sight of the garage door
• out of reach of children at minimum height of 5 feet
• away from all moving parts of the 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 with a one-
inch high object (or a 2x4 laid flat) on the floor.
To reduce the risk of severe injury or death:
WARNING
INSTALLATION

12
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 14) 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 supplied)
to securely fasten the 2x4 to structural supports as
shown here and on page 13.
3.Open your door to the highest point of travel as
shown. Draw an intersecting horizontal line on the
header wall 3" above the high point. This height
will provide travel clearance for the top edge of the
door.
Proceed to Step 2, page 14.
One-piece
door with
horizontal
track
To prevent possible SERIOUS INJURY or DEATH:
• Header bracket MUST be RIGIDLY fastened to
structural support on header wall or ceiling, otherwise
garage door might not reverse when required. DO NOT
install header bracket over drywall.
• Concrete anchors MUST be used if mounting header
bracket or 2x4 into masonry.
• NEVER try to loosen, move or adjust garage door,
springs, cables, pulleys, brackets, or their hardware, all
of which are under EXTREME tension.
• ALWAYS call a trained door systems technician if
garage door binds, sticks, or is out of balance. An
unbalanced garage door might not reverse when
required.
Header Wall
Ceiling
Track
Highest Point
of Travel
Door
3"
Sectional door
with curved
track
Door
Track
Header Wall
Highest Point
of Travel
3"
Vertical
Centerline
Finished
Ceiling
Vertical
Centerline
Header
Wall 2x4 Structural
Supports
WARNING

13
Header Wall Vertical
Centerline
Vertical
Centerline
of Garage
Door
2x4
Unfinished
Ceiling
2x4 OPTIONAL
CEILING MOUNT
FOR
HEADER BRACKET
Structural
Supports
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 14.
If you need to install the header bracket on a 2x4
(on wall or ceiling), use lag screws (not supplied)
to securely fasten the 2x4 to structural supports
as shown.
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).
3.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 14 for ceiling
installation.
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
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 2, page 14.

14
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 supplied).
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 3/16"
pilot holes and fasten the bracket securely to a
structural support with the hardware provided.
Lag Screw
5/16"-9 x 1-5/8"
HARDWARE SHOWN ACTUAL SIZE
Lag Screws
5/16"x9x1-5/8"
Highest Point of
Garage Door Travel
Vertical
Center Line
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
Center Line
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"x9x1-5/8"
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 3/16" pilot holes and
fasten bracket securely to a structural support with
the hardware provided.

15
INSTALLATION STEP 3
Attach the 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.
Header Bracket
Rail Bracket
Foam Packaging
Opener Carton or
Temporary
Support
Header Wall
Garage
Door
Rail
Clevis Pin
5/16" x 2-3/4" Ring Fastener
Clevis Pin
5/16"x2-3/4 "
Ring Fastener
Header Bracket
Rail
Bracket
Rail
Torsion
Spring
HARDWARE SHOWN ACTUAL SIZE

16
Invisible Light Beam
Protection Area
Sensor Beam
6" max.
above floor
Sensor Beam
6" max.
above floor
Facing the door from inside the garage
INSTALLATION STEP 4
Install The Protector System®
The safety reversing sensor must be connected
and aligned correctly before the garage door
opener will move in the down direction.
IMPORTANT INFORMATION ABOUT
THE SAFETY REVERSING SENSOR
When properly connected and aligned, the 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 INJURY 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

17
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
Figure 1
Figure 2
INSTALLING THE BRACKETS
Be sure power to the opener is disconnected.
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.

18
1/4"-20x1/2"
Carriage bolt Lens
Wing nut
Figure 4
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. See Figure 4.
• Finger tighten the wing nuts.
Recommended Wire Routing
1.Using insulated staples, run the wires from both
sensors to the rail at the door header
(see Figure 5).
2.Cross and twist the two wires where they meet
the rail (see inset A). Run the wires inside the
channels at the top of the rail, along each side,
to the motor unit. Do not use the lower (trolley)
channels. Use a screwdriver tip to tuck the wires
snugly into the channels.
NOTE: If your access door is near the garage
door, you may choose to install the door control at
this time and run the door control wire along the
rail with the sensor wires. Use one rail channel for
the door control wire and the other channel for
both sensor wires. If you choose this option, follow
instructions 1-3 on page 21 now.
3.Pull wires taut across the top of the chassis and
insert into the opening above the terminal block
(see inset B). You will complete the wiring in
Installation Step 7.
Wing Nut Staples
1/4"-20x1/2"
Carriage Bolt
HARDWARE SHOWN ACTUAL SIZE
Invisible Light Beam
Protection Area Sensor
Sensor
Bell Wire
Header
Bracket
Header
Wall
Sensor
Wire
Twist
Wires Sensor
Wire
Rail
Channel
2. Run wires along channels
to motor unit. Use screwdrive blade
to tuck snugly into channels.
1. Run wires from sensors to end of rail
at the door header. Cross & twist here to
help contain wires in channels on top of rail.
3. Pull wires taut across top of chassis
and insert into opening above
terminal block.
Figure 5
A
B

19
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 top of
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 3" above this point.
INSTALLATION STEP 5
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 section or 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 Installation Step 13
is completed.
2x4
Door Foam
Packaging
Header
Bracket
Header
Bracket
Top of Door
Foam
Packaging
Trolley
Release Arm
ENGAGED RELEASED
To prevent damage to garage door, rest garage door
opener rail on 2x4 placed on top section of door.
CAUTION

20
INSTALLATION STEP 6
Hang the Opener
Three representative installations are shown. Yours
may be different. Hanging brackets should be angled
(Figure 1) 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 foam 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 screws, lock washers and nuts.
If you wish to utilize the two center mounting tabs,
you must triangulate the vertical brackets for
additional stability. See Figure 3.
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.
To avoid possible SERIOUS INJURY 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.
Hex Screw
5/16"- 18x7/8" Nut 5/16"-18 Lock Washer 5/16"
Lag Screw
5/16"-18x1-7/8"
HARDWARE SHOWN ACTUAL SIZE
Measure
Distance
Lag Screws
5/16"- 18x1-7/8"
Bracket
(Not Supplied)
Lag Screws
5/16"-18x1-7/8"
(Not Supplied)
5/16"-18x7/8" Screw
5/16" Lock Washer
5/16"-18 Nut
— FINISHED CEILING —
5/16"-18x7/8"
Hex Screws
5/16" Lock Washers
5/16"-18 Nuts
Hidden
Support
5/16"-18x7/8" Screw
5/16" Lock Washer
5/16"-18 Nut
Structural
Supports
Preferred range of
bracket placement
Preferred range of
bracket placement
Mounting Tabs
Existing Brackets
Bracket
(Supplied)
Figure 1
Figure 2
Figure 3
WARNING