Chamberlain POWER DRIVE 248735S 3/4 HP User manual

The Chamberlain Group, Inc.
845 Larch Avenue
Elmhurst, Illinois 60126-1196
www.chamberlain.com
GARAGE DOOR OPENER
Model 248735S 3/4 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 left side panel of your opener.
®

2
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.
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.
Mechanical
Electrical
Introduction 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 8-11
Assemble the rail and install the trolley. . . . . . . . . . . . . . .8
Fasten the rail to the motor unit . . . . . . . . . . . . . . . . . . . .9
Install the idler pulley . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Install the chain/cable . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Tighten the chain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Installation 11-26
Installation safety instructions . . . . . . . . . . . . . . . . . . . .11
Determine the header bracket location . . . . . . . . . . . . . .12
Install the header bracket . . . . . . . . . . . . . . . . . . . . . . . .13
Attach the rail to the header bracket . . . . . . . . . . . . . . . .14
Position the opener. . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Hang the opener . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Install the door control . . . . . . . . . . . . . . . . . . . . . . . . . .16
Install the lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Attach the emergency release rope and handle. . . . . . . .17
Electrical requirements . . . . . . . . . . . . . . . . . . . . . . . . . .18
Install The Protector System®. . . . . . . . . . . . . . . . . . 19-22
Fasten the door bracket. . . . . . . . . . . . . . . . . . . . . . . 23-24
Connect the door arm to the trolley . . . . . . . . . . . . . 25-26
Adjustment 27-29
Adjust the travel limits . . . . . . . . . . . . . . . . . . . . . . . . . .27
Adjust the force. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
Test the safety reversal system. . . . . . . . . . . . . . . . . . . .29
Test The Protector System®. . . . . . . . . . . . . . . . . . . . . .29
Operation 30-34
Operation safety instructions . . . . . . . . . . . . . . . . . . . . .30
Using your garage door opener . . . . . . . . . . . . . . . . 30 31
Using the wall-mounted door control . . . . . . . . . . . . . . .31
To open the door manually . . . . . . . . . . . . . . . . . . . . . . .31
Care of your garage door opener . . . . . . . . . . . . . . . . . .32
Having a problem? . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
Diagnostic chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34
Programming 35-36
To add or reprogram a hand-held remote control. . . . . .35
To erase all codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35
3-Button remotes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35
To add, reprogram or change a Keyless Entry PIN . . . . .36
Repair Parts 37-38
Rail assembly parts. . . . . . . . . . . . . . . . . . . . . . . . . . . . .37
Installation parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37
Motor unit assembly parts . . . . . . . . . . . . . . . . . . . . . . .38
Accessories 39
Repair Parts and Service 40
Warranty 40

3
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.
Sectional Door
One-Piece Door
Pliers
Wire Cutters
Claw Hammer
Hack Saw
Screwdriver
Adjustable End Wrench
Sockets and Wrench
1/2", 5/8", 7/16", 9/16"
and 1/4"
Drill
Tape Measure
Stepladder
Pencil
Drill Bits
3/16", 5/16"
and 5/32"
Carpenter’s
Level (optional)

4
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 5 – Do you have a finished ceiling in
your garage? If so, a support bracket and additional
fastening hardware may be required.
• Installation Step 10 – Depending upon garage
construction, extension brackets or wood blocks may
be needed to install sensors.
• Installation Step 10 – 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 Emergency Key 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" (6 mm). 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 reinforcement
is required (Installation Step 11).
• 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 (1.22 m) to the left or right of the door
center. See Installation Steps 1 and 11.
• If your door is more than 7 feet (2.13 m) high, see rail
extension kits listed on Accessories page.
Header
Bracket Trolley Stop
Bolt Trolley
Chain
Emergency
Release
Rope &
Handle
Header
Wall
Header
Wall
Garage
Door
Door Bracket
Curved Door Arm
Garage
Door
Spring Straight
Door
Arm
SECTIONAL DOOR INSTALLATION
Motor Unit
FINISHED CEILING
Support bracket &
fastening hardware
is required.
See page 15.
Slack in chain
tension is
normal when
garage door is
closed.
Horizontal and vertical reinforcement
is needed for lightweight garage
doors (fiberglass, steel, aluminum,
door with glass panels, etc.).
See page 23 for details.
Extension Spring
OR
Torsion Spring
Wall-Mounted
Door Control
Safety
Reversing Sensor
Safety Reversing Sensor
Gap between floor and
bottom of door must not
exceed 1/4" (6 mm).
Vertical
Centerline of
Garage Door

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 11.
• Depending on your door’s construction, you may need
additional mounting hardware for the door bracket
(Step 11).
ONE-PIECE DOOR WITHOUT 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" (6 mm).
Otherwise, the safety reversal system may NOT
work properly.
• The floor or the garage door MUST be repaired to
eliminate the gap.
ONE-PIECE DOOR WITH TRACK
FINISHED CEILING
Support bracket & fastening
hardware is required.
See page 15.
Wall-mounted
Door Control
Motor Unit
Access
Door
Gap between floor and
bottom of door must not exceed 1/4" (6 mm).
Gap between floor and
bottom of door must
not exceed 1/4" (6 mm).
Safety
Reversing Sensor
Safety
Reversing Sensor
Safety
Reversing Sensor
Safety Reversing
Sensor
Header Wall Rail
Slack in chain tension
is normal when garage
door is closed.
CLOSED POSITION
Emergency
Release
Rope &
Handle
Emergency
Release
Rope &
Handle
Header
Bracket
Header
Bracket
Straight Door
Arm
Straight Door
Arm
Curved
Door
Arm
Curved
Door Arm
Garage Door
Garage
Door
Door Bracket
Door
Bracket
Header
Wall
Header
Wall
Cable
Cable
Rail
Rail
Trolley
Stop Bolt
Trolley
Stop Bolt
Trolley
CLOSED POSITION
Chain

6
Your garage door opener is packaged in one carton which
contains the motor unit and all parts illustrated below.
Accessories will depend on the model purchased. If
anything is missing, carefully check the packing material.
PARTS MAY BE STUCK IN THE FOAM. 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
Motor Unit with 2 Light Lenses
Idler Pulley
“U” Bracket
Trolley
The Protector System®
(2) Safety Reversing Sensors
(1 Sending Eye and 1 Receiving Eye)
with 2-Conductor White & White/Black
Bell Wire attached
Header Bracket
2-Conductor Bell Wire
White & White/Red
Rail
Center/Back
Sections
Door Bracket
Safety Reversing
Sensor Bracket (2)
Rail
Front (header)
Section
Chain Spreader
Hanging Brackets
Straight Door
Arm Section
Curved Door
Arm Section
Safety Labels
and Literature
SECURITY✚®3-Button
Remote Control with Visor Clip (2)
Multi-Function
Door Control
Chain and Cable

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

8
ASSEMBLY STEP 1
Assemble the Rail & Install the Trolley
To avoid installation difficulties, do not run the garage
door opener until instructed to do so.
The front rail has a cut out “window” at the door end
(see illustration). The hole above this window is larger
on the top of the rail than on the bottom. A smaller hole
3-1/2" (8.9 cm) away is close to the rail edge. Rotate the
back rail so it has a similar hole close to the opposite
edge, about 4-3/4" (12 cm) from the far end.
1. Remove the straight door arm and hanging bracket
packaged inside the front rail and set aside for
Installation Step 5 and 12. NOTE: To prevent INJURY
while unpacking the rail carefully remove the straight
door arm stored within the rail section.
2. Align the rail sections on a flat surface as shown and
slide the tapered ends into the larger ones. Tabs along
the side will lock into place.
To prevent INJURY from pinching, keep hands and
fingers away from the joints while assembling the rail.
3. Place the motor unit on packing material to protect
the cover, and rest the back end of the rail on top.
For convenience, put a support under the front end of
the rail.
4. As a temporary trolley stop, insert a screwdriver into
the hole 10" (25 cm) away from the front of the rail,
as shown.
5. Check to be sure there are 4 plastic wear pads inside
the inner trolley. If they became loose during shipping,
check all packing material. Snap them back into
position as shown.
6. Slide the trolley assembly along the rail from the back
end to the screwdriver.
KEEP LARGER
HOLE ON TOP
FRONT RAIL
(TOP)
Tapered
End
Tapered
End
Tapered
End
Tapered
End
Idler
Pulley
Hole
Screwdriver
Tabs
Window
Cut-Out
Front Rail
(TO DOOR)
Trolley
Back Rails
(TO MOTOR UNIT)
Outer Trolley
Inner Trolley
Wear Pads

9
To avoid SERIOUS damage to garage door opener,
use ONLY those bolts/fasteners mounted in the top of
the opener.
ASSEMBLY STEP 2
Fasten the Rail to the Motor Unit
• Insert a 1/4"-20x2" bolt, washer and spacer into the
cover protection bolt hole on the back end of the rail
as shown. Tighten securely with a 1/4"-20 lock nut.
DO NOT overtighten.
• Remove the bolt and lock nut from the top of the
motor unit.
• Attach spreader to the motor unit with two screws.
• Place the “U” bracket, flat side down onto the bolt
mounted on the motor unit and align the bracket hole
with the bolt holes. Fasten with the previously removed
bolt and lock nut.
• Align the rail assembly with the top of the motor unit.
Slide the rail end onto the “U” bracket, all the way to the
stops that protrude on the top and sides of the bracket.
ASSEMBLY STEP 3
Install the Idler Pulley
• Lay the chain/cable beside the rail, as shown. Grasp
the end with the cable loop and pass approximately 12"
(30 cm) of cable through the window. Allow it to hang
until Assembly Step 5.
• Remove the tape from the idler pulley. The inside center
should be pre-greased. If dry, regrease to ensure proper
operation.
• Place the idler pulley into the window as shown.
• Insert the idler bolt from the top through the rail
and pulley. Tighten with a 3/8" lock washer and nut
underneath the rail until the lock washer is compressed.
• Rotate the pulley to be sure it spins freely.
• Insert a 1/4"-20x1-3/4" bolt into the trolley stop hole in
the front of the rail as shown. Tighten securely with a
1/4"-20 lock nut.
HARDWARE SHOWN ACTUAL SIZE
HARDWARE SHOWN ACTUAL SIZE
Bolt
Hex Screws
8-32x7/16" Chain Spreader
Motor Unit
Sprocket
“U” Bracket
Lock Nut
Lock Nut
Bolt
Spacer
Washer
SLIDE RAIL TO
STOPS ON TOP AND
SIDES OF BRACKET
Cover
Protection
Bolt Hole
Idler Bolt
Lock
Nut
Grease
Inside Pulley
Chain and Cable Pulley
Bolt
Nut
Rail
Washer
Lock
Washer
3/8"
Screwdriver
Idler
Bolt
Cable Link
Idler
Pulley
Trolley
Stop Hole Bolt
Idler
Pulley
Nut
3/8"
Nut 3/8"
Lock Nut 1/4"-20Lock Washer 3/8"
Bolt 1/4"-20x1-3/4"
Trolley
Washer 5/8"
Spacer
Lock Nut
1/4"-20
Bolt 1/4"-20x2"

10
To avoid possible SERIOUS INJURY to fingers from
moving garage door opener:
• ALWAYS keep hand clear of sprocket while
operating opener.
• Securely attach chain spreader BEFORE operating.
Figure 2
Figure 3
ASSEMBLY STEP 4
Install the Chain/Cable
1. Pull the cable around the idler pulley and toward
the trolley.
2. Connect the cable to the retaining slot on the trolley,
as shown (Figure 1):
• From below, push pins of master link bar up
through cable link and trolley slot.
• Push master link cap over pins and past pin
notches.
• Slide clip-on spring over cap and onto pin notches
until both pins are securely locked in place.
3. With the trolley against the screwdriver, dispense the
remainder of the cable/chain along the rail toward the
motor unit into the slot on the chain spreader, around
the sprocket onto the chain spreader and continuing to
the trolley assembly. The sprocket teeth must engage
the chain (Figure 2).
4. Check to make sure the chain is not twisted, then
connect it to the threaded shaft with the remaining
master link.
5. Thread the inner nut and lock washer onto the trolley
threaded shaft (Figure 3).
6. Insert the trolley threaded shaft through the hole in
the trolley. Be sure the chain is not twisted (Figure 4).
7. Loosely thread the outer nut onto the trolley
threaded shaft.
8. Remove the screwdriver.
Figure 4
Figure 1
Master
Link Cap
Master Link
Clip-On Spring
Master Link
Clip-On Spring Master
Link Cap
Trolley
Threaded
Shaft
Master
Link Bar
Pin Notch
Master
Link Bar
Cable
Idler
Pulley
Cable Link
Dispensing Carton
Leave Chain and Cable
Inside Dispensing
Carton to Prevent Kinking.
Keep Chain and Cable
Taut When Dispensing
Slotted
Hole
Round
Hole
Round
Hole
Trolley
Threaded
Shaft
Trolley
Threaded
Shaft
Inner Nut
5/16"
Lock Washer
5/16"
Motor Unit
Sprocket
“U” Bracket
Chain
Spreader
Lock Nut

11
INSTALLATION
ASSEMBLY STEP 5
Tighten the Chain
• Spin the inner nut and lock washer down the trolley
threaded shaft, away from the trolley.
• To tighten the chain, turn outer nut in the direction
shown (Figure 1).
• When the chain is approximately 1/4" (6 mm) above the
base of the rail at its midpoint, re-tighten the inner nut
to secure the adjustment.
Sprocket noise can result if chain is too loose.
When installation is complete, you may notice some chain
droop with the door closed. This is normal. If the chain
returns to the position shown in Figure 2 when the door is
open, do not re-adjust the chain.
NOTE: During future maintenance, ALWAYS pull the
emergency release handle to disconnect trolley before
adjusting chain.
NOTE: You may notice loosening of chain after Adjustment
Step 3 (Test the Safety Reversal System). Check for proper
tension and readjust chain if necessary. Then repeat
Adjustment Step 3.
You have now finished assembling your garage door
opener. Please read the following warnings before
proceeding to the installation section.
IMPORTANT INSTALLATION INSTRUCTIONS
To reduce the risk of SEVERE INJURY or DEATH:
WARNING
WARNING
WARNINGWARNING
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 (2.13 m) or more
above floor.
6. Mount the emergency release within reach, but at
least 6 feet (1.83 m) above the floor and avoiding
contact with vehicles to avoid accidental release.
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 (1.5 m).
• 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 1-1/2"
(3.8 cm) high object (or a 2x4 laid flat) on the floor.
Figure 1
Figure 2
To Tighten Outer Nut
Outer
Nut Lock
Washer
Trolley
Threaded
Shaft
Inner Nut
To Tighten
Inner Nut
1/4" (6 mm)
Mid length of Rail
Base of Rail
Chain

12
Installation procedures vary according to garage door
types. Follow the instructions which apply to your door.
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
(1.22 m) 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 13) when
clearance is minimal. (It may be mounted on the
wall upside down if necessary, to gain approximately
1/2" (1 cm).)
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 13.
3. Open your door to the highest point of travel as shown.
Draw an intersecting horizontal line on the header wall
above the high point:
• 2" (5 cm) above the high point for sectional door
and one-piece door with track.
• 8" (20 cm) above the high point for one-piece door
without track.
This height will provide travel clearance for the top edge
of the door.
NOTE: If the total number of inches exceeds the height
available in your garage, use the maximum height
possible, or refer to page 13 for ceiling installation.
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.
INSTALLATION STEP 1
Determine the Header Bracket Location
Unfinished
Ceiling
OPTIONAL
CEILING
MOUNT
FOR
HEADER
BRACKET
Header Wall
Vertical Centerline
of Garage Door
Level
(optional)
2x4 Structural
Supports
2x4
Header Wall Header Wall
Header Wall
Header Wall
8" (20 cm)
8" (20 cm)
Highest
Point of
Travel
Highest
Point of
Travel
Highest
Point of
Travel
Highest Point
of Travel
One-piece door without track:
pivot hardware
One-piece door without track:
jamb hardware
2" (5 cm) 2" (5 cm)
Door
Door
Door
Door
Jamb
Hardware
Pivot
One-piece door with
horizontal track
Sectional door with
curved track
Track
Track

13
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. Drill 3/16" pilot
holes and fasten the bracket securely to a structural
support with the hardware provided.
HARDWARE SHOWN ACTUAL SIZE
CEILING HEADER BRACKET INSTALLATION
• Extend the vertical centerline onto the ceiling as shown.
• Center the bracket on the vertical mark, no more
than 6" (15 cm) from the wall. Make sure the arrow
is pointing away from 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.
Lag Screw 5/16"-9x1-5/8"
Ceiling Mounting Holes Door
Spring
6" (15 cm) Maximum
Garage Door Vertical
Centerline
of Garage Door
— Header Wall —
— Header Wall —
Lag Screws
5/16"-9x1-5/8"
Vertical Centerline
of Garage Door
— Finished Ceiling —
Header
Bracket
Vertical
Centerline
of Garage Door
Vertical
Centerline
of Garage
Door
— Garage Door —
Door Spring
Lag Screws
5/16"-9x1-5/8"
Wall Mount
Optional
Mounting Holes
2x4
Structural
Support
Horizontal
Line
Highest Point of
Garage Door Travel
Header
Bracket

14
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
5/16"x1-1/2" as shown.
• Insert a ring fastener to secure.
HARDWARE SHOWN ACTUAL SIZE
Clevis Pin 5/16"x1-1/2" Ring Fastener
To prevent damage to garage door, rest garage door
opener rail on 2x4 placed on top section of door.
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.
• Remove foam packaging.
• 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 12 is completed.
ONE-PIECE DOOR WITHOUT TRACK
A 2x4 on its side is convenient for setting an ideal
door-to-rail distance.
• Remove foam packaging.
• 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 on its side on
the top section of the door beneath the rail.
• The top of the door should be level with the top of the
motor unit. Do not position the opener more than 4"
(10 cm) above this point.
Header Bracket
Header Wall
Idler Pulley
Header
Bracket
Mounting
Hole
2x4 is used to determine
the correct mounting height
from ceiling.
Door
Rail
Header
Bracket
Top of Door
2x4 is used to determine
the correct mounting height
from ceiling.
ENGAGED RELEASED
Trolley
Release Arm
Opener
Carton or
Temporary
Support
Garage
Door

15
INSTALLATION STEP 5
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
and Figure 3), attach a sturdy metal bracket to structural
supports before installing the opener. This bracket and
fastening hardware are not provided.
1. 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.
NOTE: DO NOT connect power to opener at this time.
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.
HARDWARE SHOWN ACTUAL SIZE
Figure 1
Figure 2
Figure 3
Lag Screw 5/16"-18x1-7/8"
Hex Bolt
5/16"-18x7/8" Nut 5/16"-18Lock Washer 5/16"
Structural
Supports
Lag Screws
5/16"-18x1-7/8"
Bolt 5/16"-18x7/8"
Lock Washer 5/16"
Nut 5/16"-18
Bolt 5/16"-18x7/8"
Lock Washer 5/16"
Nut 5/16"-18
Bolt 5/16"-18x7/8"
Lock Washer 5/16"
Nut 5/16"-18
Measure
Distance
Hidden
Support
Lag Screws
5/16"-18x1-7/8"
Lag Screws
5/16"-18x1-7/8"
(Not Provided)
Bolt 5/16"-18x7/8"
Lock Washer 5/16"
Nut 5/16"-18
(Not Provided)
Bolt 5/16"-18x7/8"
Lock Washer 5/16"
Nut 5/16"-18
Bracket
(Not Provided)
FINISHED CEILING
FINISHED CEILING

16
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
(1.5 m), 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.
Figure 1
Figure 3
HARDWARE SHOWN ACTUAL SIZE
INSTALLATION STEP 6
Install the Door Control
Locate door control within sight of door at a minimum
height of 5 feet (1.5 m) where small children cannot reach,
and away from moving parts of 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" (11 mm) 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 cover by gently prying at the top of the
cover with a small flat head screwdriver. 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" (3 mm)
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.
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. If your access
door is near the garage door, you may run this wire
with the Safety Reversing Sensor wires along the top of
the rail.
4. Insert all wires through the opening on top of motor unit
above the terminal block on the side panel (Figure 4).
5. Strip 7/16" (11 mm) of insulation from each set of bell
wires. Connect bell wires to the quick-connect terminals
as follows: white to white and white/red to red; white to
white and white/black to grey (Figure 4).
NOTE: When connecting multiple door controls to the
opener, twist same color wires together. Insert wires into
quick-connect holes: white to white and red/white to red.
6. 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 19.
Figure 2
Figure 4
Drywall Anchors
Insulated
Staples
Screw 6ABx1-1/4"
(std installation)
Screw 6-32x1"
(pre-wired)
To release or
insert wire,
push in tab with
screwdriver tip
Door Control
Connections
Red Grey
White
Strip wire 7/16" (11 mm)
Bottom Mounting Hole
Top Mounting Hole
Bell Wire
Terminal Screws
To Replace
Insert Bottom Tabs First
To Replace Insert
Bottom Tabs First
24 Volt
Bell Wire
STANDARD
INSTALLATION
MULTI-FUNCTION DOOR CONTROL
PRE-WIRED
INSTALLATION

17
INSTALLATION STEP 7
Install the Lights
• 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 a 100 watt maximum light bulb in each socket.
Light bulb size should be A19, standard neck only.
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.
• Use A19, standard neck garage door opener bulbs
for replacement.
NOTE: Use only standard light bulbs. The use of short
neck or speciality light bulbs may overheat the endpanel or
light socket.
To prevent possible SERIOUS INJURY 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.
To prevent possible OVERHEATING of the endpanel or
light socket:
• DO NOT use short neck or specialty light bulbs.
• DO NOT use halogen bulbs. Use ONLY
incandescent.
To prevent damage to the opener:
• DO NOT use bulbs larger than 100W.
• ONLY use A19 size bulbs.
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"
(2.5 cm) 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 (1.83 m)
above the floor. Ensure that the rope and handle clear
the tops of all vehicles to avoid entanglement. 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.
100 Watt (Max)
Standard Light
Bulb
Release Tab
100 Watt (Max)
Standard
Light Bulb
Lens
Hinge
Trolley
Overhand
Knot
Emergency
Release Handle
Trolley
Release arm

18
INSTALLATION STEP 9
Electrical Requirements
To avoid installation difficulties, 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.
To prevent possible SERIOUS INJURY 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.
If permanent wiring is required by your local code, refer
to the following procedure.
To make a permanent connection through the 7/8" hole in
the top of the motor unit:
• 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 difficulties, do not run the opener
at this time.
RIGHT WRONG PERMANENT WIRING
CONNECTION
Ground Tab
Green
Ground Screw
Ground Wire Black Wire
Black
Wire
White Wire
White Wire

19
Facing the door from inside the garage.
INSTALLATION STEP 10
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 amber 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" (15 cm) 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.
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" (15 cm) above garage floor.
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.
Safety Reversing Sensor
6" (15 cm) max. above floor
Safety Reversing Sensor
6" (15 cm) max. above floor
Invisible Light Beam
Protection Area

20
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"
(15 cm) above the floor. They may be installed in one of
three ways, as follows.
Garage door track installation (preferred) (Figure 1):
• 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.
If your door track will not support the bracket securely,
wall installation is recommended.
Wall installation (Figures 2 & 3):
• 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" (15 cm) 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 (Figure 4):
• Use wood blocks or extension brackets (see
Accessories) to elevate sensor brackets so the lenses
will be no higher than 6" (15 cm) 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.
HARDWARE SHOWN ACTUAL SIZE
Figure 1
Figure 2
Figure 3
Figure 4
DOOR TRACK MOUNT (RIGHT SIDE)
FLOOR MOUNT (RIGHT SIDE)
WALL MOUNT (RIGHT SIDE)
WALL MOUNT (RIGHT SIDE)
Attach with
Concrete Anchors
(not provided)
Indicator
Light
Indicator
Light
Indicator
Light
Indicator
Light
Lens
Lens
Lens
Lens
Safety
Reversing
Sensor
Bracket
Safety
Reversing
Sensor
Bracket
Safety
Reversing
Sensor
Bracket
Safety
Reversing
Sensor
Bracket
Door
Track
Lip
Fasten Wood Block to Wall with
Lag Screws (not provided)
Lag Screws
(not provided)
(Provided with
Extension Bracket)
(Provided with
Extension Bracket)
Extension Bracket
(See Accessories)
Wing Nut
1/4"-20 Staples
Carriage Bolt
1/4"-20x1/2"
Inside
Garage
Wall
Inside
Garage
Wall
Inside
Garage
Wall