Chamberlain 248730 User manual

Brand: Chamberlain

Model: 248730

Category: Garage Door Opener

Type: User manual

This manual is also suitable for

The Chamberlain Group, Inc.

845 Larch Avenue

Elmhurst, Illinois 60126-1196

www.chamberlain.com

GARAGE DOOR OPENER

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 under the light lens on the front panel of your opener.

PD210D • PD212D • LW2000

HD200D • 248730

PD610D • PD612D • HD400D • LW3000

There are two types of garage door openers pictured. Yours may appear slightly different.

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

IMPORTANT SAFETY NOTES

TABLE OF CONTENTS

Before you begin:

• Disable locks (contact your door manufacturer for

information on disabling your door 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.

If you have a one-piece door, the installation of your

garage door opener will be different. Follow the assembly

instructions included in this manual then proceed to the

Installation Instructions For One-Piece Doors included with

the garage door opener.

Preparing Your Garage Door . . . . . . . . . . . . . . . . . . .2

Completed Installation . . . . . . . . . . . . . . . . . . . . . . .3

Tools Needed . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

Opener Contents . . . . . . . . . . . . . . . . . . . . . . . . . . .4

Assembly Hardware . . . . . . . . . . . . . . . . . . . . . . . . .5

Installation Hardware . . . . . . . . . . . . . . . . . . . . . . . .5

Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-8

Installation

Installation safety instructions . . . . . . . . . . . . . . . . . . . . . 9

Install the header bracket . . . . . . . . . . . . . . . . . . . . . . . . 10

Mount the header bracket . . . . . . . . . . . . . . . . . . . . . . . . 11

Position and hang motor unit . . . . . . . . . . . . . . . . . . . . . 12

Horizontal and vertical reinforcement . . . . . . . . . . . . . . . 13

Fasten the door bracket. . . . . . . . . . . . . . . . . . . . . . . . . . 13

Attach door to trolley . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Installing the door control. . . . . . . . . . . . . . . . . . . . . . . . 15

Installing the light bulb(s). . . . . . . . . . . . . . . . . . . . . . . . 16

Electrical requirements . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Install the Protector System

. . . . . . . . . . . . . . . . . . 17-18

Wir e safety reversing sensor. . . . . . . . . . . . . . . . . . . 19-20

Adjustment

Adjust the UP and DOWN travel limits . . . . . . . . . . . . . . 21

Adjust the forces. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Test the safety reversal system. . . . . . . . . . . . . . . . . . . . 23

Test the Protector System

. . . . . . . . . . . . . . . . . . . . . . . 23

Operation

Important Safety Information . . . . . . . . . . . . . . . . . . . . . 24

Using your garage door opener . . . . . . . . . . . . . . . . . . . 24

Using the wall-mounted door control . . . . . . . . . . . . . . . 25

Care of your opener . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

To open the door manually . . . . . . . . . . . . . . . . . . . . . . . 25

Having a Problem?. . . . . . . . . . . . . . . . . . . . . . . . .26

Diagnostic Chart . . . . . . . . . . . . . . . . . . . . . . . . . .27

Programming

To add or reprogram an additional

hand-held remote control . . . . . . . . . . . . . . . . . . . . . . . . 28

To control the opener lights . . . . . . . . . . . . . . . . . . . . . . 28

Multi-function remotes . . . . . . . . . . . . . . . . . . . . . . . . . . 28

To add, reprogram or

change a keyless entry PIN . . . . . . . . . . . . . . . . . . . . . . . 29

To change an existing, known PIN . . . . . . . . . . . . . . . . . 29

To set a temporary PIN . . . . . . . . . . . . . . . . . . . . . . . . . . 30

To erase all codes from motor unit memory. . . . . . . . . . 30

The remote control battery . . . . . . . . . . . . . . . . . . . . . . . 30

Repair Parts

Rail assembly parts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Installation parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Motor unit assembly parts . . . . . . . . . . . . . . . . . . . . . . . 32

Accessories. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Warranties . . . . . . . . . . . . . . . . . . . . . . . . . . . 34-35

Repair Parts and Service. . . . . . . . . . . . . . . . . . . . . 36

PREPARING YOUR GARAGE DOOR

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.

Sectional Door One-Piece Door

See Addendum

Planning

Identify the type and height of your garage door. If you

have a one-piece door, follow the assembly instructions

contained in this manual and refer to the Installation

Instructions One-Piece Door for installation procedures.

Survey your garage area to see if any of the conditions

below apply to your installation. Additional materials may

be required. You may ﬁ nd 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 Page 10 – Look at the wall or ceiling above

the garage door. The header bracket must be securely

fastened to structural supports.

• Installation Page 12 – Do you have a ﬁ nished ceiling

in your garage? If so, a support bracket and additional

fastening hardware may be required.

• Installation Page 13 – Do you have a steel, aluminum,

ﬁ berglass or glass panel door? If so, horizontal and

vertical reinforce ment is required.

• Installation Page 18 – Depending upon garage

construction, extension brackets or wood blocks may

be needed to install sensors.

• Installation Page 18 – Alternate ﬂ oor 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 ﬂ oor. Any

gap between the ﬂ oor 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.

• 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.

• If your door is more than 7 feet (2.13 m) high, see rail

extension kits listed on Accessories page 33.

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 ﬂ oor MUST NOT exceed 1/4" (6 mm). Otherwise,

the safety reversal system may NOT work properly.

• The ﬂ oor or the garage door MUST be repaired to

eliminate the gap.

COMPLETED INSTALLATION

Header Wall

Rail

FINISHED CEILING

Horizontal and vertical reinforcement

is needed for lightweight garage doors

(ﬁ berglass, steel, aluminum, door with

glass panels, etc.). See page 13 for details.

Support bracket &

fastening hardware

is required.

See page 12.

Slack in chain tension

is normal when

garage door is closed.

Center of

Garage Door

Wall-mounted

Door Control

Straight Door Arm

Emergency

Release

Rope &

Handle

Header

Wall

Chain

Trolley

Stop Bolt

Trolley

CLOSED POSITION

Garage

Door

Spring

Garage

Door

Door Bracket

Curved Door Arm

Header

Bracket

Gap between ﬂ oor

and bottom of door

must not exceed

1/4" (6 mm)

Torsion Spring

Access

Door

Safety Reversing Sensor

Safety

Reversing

Sensor

TOOLS NEEDED

OPENER CONTENTS

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.

Hardware for assembly and installation is shown on the next page. Save the carton and packing material until installation

and adjustment is complete.

Stepladder

Carpenter’s

Level (Optional)

Tape Measure

2 X 4 Board

Drill

Sockets and Wrench

1/2", 5/8", 7/16", 9/16"

and 1/4"

Pencil

Wire Cutters

Pliers

Adjustable End Wrench

Phillips and Flat Screwdriver

Claw Hammer

1/4" Nutdriver

Hack Saw

Drill Bits

3/16", 5/16"

and 5/32"

A12

A11

A10

A15

A14

A13

A18

A21

A17

A16

A19

Motor Unit with Light Lenses

(varies depending upon

model purchased)

Idler Pulley

(included with hardware)

Trolley

Remote Control Transmitter

Door Bracket

Rail

Center/Back

Sections (4)

Rail

Front (header)

Section (1)

Keyless Entry

Models HD400D

and LW3000

Models

PD610D (1)

PD612D (2)

HD400D (2)

LW3000 (2)

Models

PD210D (1)

PD212D (2)

LW2000 (1)

HD200D (1)

248730 (1)

Door

Control

All Other

Models

Chain Spreader

with Screws

Chain and Cable

in Dispensing Carton

Header Bracket

Straight Door

Arm Section

(packed inside

front rail)

Hanging Brackets

Safety Labels

and Literature

Curved Door

Arm Section

Safety Reversing

Sensor Bracket (2)

Door Control Button

Models LW2000, HD200D

and 248730

Assembly and

Installation

Hardware

“U” Bracket

The Protector System

(2) Safety Reversing Sensors

(1 Sending Eye and 1 Receiving Eye)

with 2-Conductor White & White/Black

Bell Wire attached

ASSEMBLY HARDWARE

INSTALLATION HARDWARE

Threaded

Trolley Shaft (1)

Bolt 1/4"-20 x 1-3/4" (2)

Lock Washer

3/8" (1)

Nut 3/8" (1)

Lock Nut

1/4"-20 (2)

Master Link (2)

Idler Bolt (1)

Insulated

Staples (30)

Nut 5/16"-18 (4)

Lock Washer 5/16" (7)

Lag Screw

5/16"-18 x 1-7/8" (2)

Ring

Fastener (3)

Screw

6AB x 1-1/4" (2)

Clevis Pin

5/16" x 1-1/4" (1)

Self-Threading Screw

1/4"-14 x 5/8" (2)

Screw 6-32 x 1" (2)

Carriage Bolts

1/4"-20 x 1/2" (2)

Rope

Wing Nut

1/4"-20 (2)

Clevis Pin

5/16" x 1" (1)

Handle

(not shown actual size)

Lag Screw

5/16"- 9 x 1-5/8" (2)

Hex Bolt

5/16"-18 x 7/8" (4)

Drywall

Anchors (2)

2-Conductor Bell Wire

White & White/Red

Clevis Pin

5/16" x 1-1/2" (1)

C12

C18

C13

C19

C14

C15

C16

C10

C17

C11

ASSEMBLY

Assemble the Rail

IMPORTANT NOTE: Remove the straight door

arm and hanging brackets packaged inside the front rail

To prevent INJURY from pinching, keep hands and

ﬁ ngers away from the joints while assembling the rail.

ALL HARDWARE SHOWN ACTUAL SIZE

A8 A7

A11

A7 A7 A7

A13

Idler

Pulley

Hole

Window

Cut-Out

As a temporary trolley stop,

insert a screwdriver into the

hole 10" (25 cm) away from

the front of the rail, as shown.

“U” Bracket

Bolt

Lock Nut

Cover

Protection

Bolt Hole

SLIDE RAIL TO STOPS

ON TOP AND SIDES

OF BRACKET

TO MOTOR UNIT

KEEP

LARGER

HOLE

ON TOP

FRONT

RAIL (TOP)

FRONT

RAIL

KEEP SMALL HOLES ALONG

OPPOSITE EDGE OF RAILS

Trolley

Stop Hole

Front Rail

(TO DOOR)

Back Rails

(TO MOTOR UNIT)

“U” Bracket

Attach Chain Spreader

ALL HARDWARE SHOWN ACTUAL SIZE

To avoid SERIOUS damage to opener, ONLY use

bolts/fasteners mounted in top of motor unit.

Attach Cable to Front

of Trolley

Run Cable Through

Cut-Out Window

Install Idler Pulley

3 4

Remove Fasteners from

Top of Motor Unit

Attach Rail to Motor Unit

A12

Hex Screws

8-32 x 7/16"

Chain

and Cable

Chain and Cable

Master Link

Clip-On Spring

Master

Link Bar

Cable

Loop

Chain and Cable

Chain

Spreader

Idler

Bolt

Washer

Lock

Washer

Idler

Pulley

Cable Loop

Bolt

Rail

Nut

Do NOT remove

Chain/Cable

from box

Bolt Bolt

Nut

Idler Bolt

Lock Washer

Master Link

Do NOT remove

Chain/Cable

from box

Attach Chain To Trolley

Threaded Shaft

Insert Trolley Threaded

Shaft into Round Hole in

Trolley

Attach Nut and Lock

Washer to Trolley

Threaded Shaft

Tighten the Chain

Desired Chain Tension

ALL HARDWARE SHOWN ACTUAL SIZE

To avoid possible SERIOUS INJURY to ﬁ ngers:

• Securely attach chain spreader.

• NEVER connect garage door opener to power source

until instructed to do so.

Route Chain/Cable Around Rail

Assembly and Motor Unit Sprocket

Assembly of your opener is now complete.

Leave chain/cable

inside carton to

prevent kinking

Master Link

Clip-On Spring

Trolley

Threaded

Shaft

Trolley

Threaded

Shaft

Nut

Lock

Washer

Lock

Washer

Nut

A2 Chain

Mid Length of RailBase of Rail

1/4" (6 mm)

Trolley

Threaded

Shaft

Master

Link Bar

Chain and

Cable in

Dispensing

Carton

Cable

Chain

Motor Unit

Sprocket

10 11

Threaded Trolley Shaft

Master Link

Nut Lock Washer

C2 C3

INSTALLATION

IMPORTANT INSTALLATION INSTRUCTIONS

To reduce the risk of SEVERE INJURY or DEATH:

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 ﬂ oor.

6. Mount the emergency release within reach, but at

least 6 feet (1.8 m) above the ﬂ oor 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"

high (3.8 cm) object (or a 2x4 laid ﬂ at) on the ﬂ oor.

WARNING

WARNING WARNING

If you have a sectional door, proceed to page 10 of

this manual.

If you have a one-piece door, proceed to the

One-Piece Door Installation Instructions included with

your garage door opener.

Sectional DoorOne-Piece Door

INSTALLATION

INSTRUCTIONS

FOR ONE-PIECE

DOORS

PAGE 10

Add a 2x4 as a Structural Support

(If Necessary)

Determine the Highest Point of

Travel, and Draw Horizontal Line

for Header Bracket Placement

NOTE: You can fasten the header bracket within 4 feet

(1.2 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 when clearance is

minimal.

Fasten header bracket securely to structural supports.

It may be necessary to use a 2x4 as a structural

support if installing on drywall or between two studs

as shown in Step 3. Securely fasten 2x4 to structural

supports using lag screws (not provided). Concrete

anchors must be used if mounting header bracket or

2x4 into masonry.

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.

• NEVER try to loosen, move or adjust garage door,

springs, cables, pulleys, brackets, or their hardware,

ALL of which are under EXTREME tension.

INSTALL THE HEADER BRACKET

Mark the center of the garage door on

door and wall and extend onto the ceiling

Mark a spot on the “center of the garage door”

line, 2" (5 cm) above the highest point of travel

of the garage door.

In some installations it may be necessary

to install a 2x4 across two studs to create a

location for header bracket or over drywall.

Use lag screws (not provided) to secure 2x4

(structural support) into wood. Use concrete

anchors to secure 2x4 into masonry.

Highest Point

of Travel

2" (5 cm)

Level

(optional)

Mark the Center of the

Garage Door

INSTALLATION

2 3

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.

Attach Rail to the Header Bracket

Mark Bracket Holes Drill Holes Attach Bracket

MOUNT THE HEADER BRACKET

NOTE: If your installation requires that the

header bracket be mounted to the ceiling. The

back edge of the bracket MUST NOT be further

than 6" (15 cm) from the header wall and the

arrow MUST point away from the header wall.

Ceiling Mount the Header Bracket (Optional)

C9 Clevis Pin C4 Ring FastenerC16 Lag Screw

ALL HARDWARE SHOWN ACTUAL SIZE

4 5 6

Center bracket on the “center

of garage door” line and the

horizontal line made in Step 2.

A14 Bracket

Drill two 3/16"

pilot holes

Secure bracket

with lag screws

C16

Lag Screw

Center the bracket

on the “center of

garage door” line

A14 Bracket

A14 Header Bracket

A14

Header

Bracket

A14

Header

Bracket

Use holes on left and right side

to secure bracket

Garage Door

Opener Carton

Mounting

Hole

Mounting

Hole

Ceiling Mount

C9 Clevis Pin

Clevis

Ring Fastener

Ring

Fastener

Mark the top

and bottom

bracket holes

Horizontal Line

Highest

Point of

Travel

Center of

Garage Door

Attach Hanging Brackets to Ceiling and Fasten Motor Unit to Hanging Brackets

Remove the 2x4 and Close Door

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 t oward the motor unit. The trolley can remain

disconnected until installation is completed.

NOTE: The garage door opener motor head will typically

sit lower than the header bracket, therefore, the rail will

be at an angle.

Open Door to Full Open Position and Rest

Rail on a 2x4 to Position Opener at the

Proper Angle for Hanging from the Ceiling

NOTE: Before the motor unit is secured to the ceiling, insure that the motor unit and rail are centered over

the door. If you mounted the header bracket off center, hang the motor unit the same distance. Concrete

anchors must be used if installing any brackets into masonry.

Option with unﬁ nished ceilingOption with ﬁ nished or unﬁ nished ceiling

To prevent damage to garage door, rest garage door

opener rail on 2x4 placed on top section of door.

To avoid possible SERIOUS INJURY from a falling

garage door opener, fasten it SECURELY to structural

supports of the garage.

ALL HARDWARE SHOWN ACTUAL SIZE

POSITION AND HANG MOTOR UNIT

2 x 4

Bracket (Not Provided)

Measure

Distance

Lag Screws or

Concrete Anchors

(Not Provided)

C2 Nut

Remove

2 x 4

(Not Provided)

Bolt 5/16"-18 x 7/8"

Lock Washer 5/16"

Nut 5/16"-18

C3 Lock Washer

Close door

C7 Hex Bolt

C3 Lock

Washer

C2 Nut

C6 Lag Screw

C6 Lag Screws

C7 Hex Bolt

C3 Lock

Washer

C2 Nut

Metal, insulated or lightweight

factory reinforced doors

Wood doors

Fasten Door Bracket

NOTE: The 1/4"-14 x 5/8" self-threading screws are

not intended for use on wood doors.

Position Door Bracket

To prevent damage to garage door, reinforce inside of

door with angle iron both vertically and horizontally.

Mark and Drill 3/16" Holes

Position the door bracket on

the face of the door within the

following limits:

1. The top edge of the bracket

2"-4" (5-10 cm) below the

top edge of the door.

2. The top edge of the bracket

directly below any structural

support across the top of the

door.

Horizontal and vertical reinforcement (not

provided) is needed for light weight garage doors

(ﬁ berglass, aluminum, steel, doors with glass

panel, etc.).

A horizontal reinforcement brace should be long

enough to be secured to two or three vertical

supports. A vertical reinforcement brace should

cover the height of the top panel. Contact your

door manufacturer for more information regarding

reinforcement of your door.

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 Connect Door Arm to Trolley section.

HORIZONTAL AND VERTICAL REINFORCEMENT

FASTEN THE DOOR BRACKET

ALL HARDWARE

SHOWN

ACTUAL SIZE

Top of Door

Center of

Garage Door

Door Bracket

Location

A15

Door Bracket

Hardware

(not provided)

Center of

Garage Door

Center of

Garage Door

Bolt 5/16" x 2"

(Not Provided)

Door Arm Connects

Directly to Vertical

Reinforcement

Self-Threading

Screws

C8 Self-Threading Screw

C5 Clevis Pin

C7 Hex Bolt C2 Nut C19 Clevis Pin C3 Lock Washer

C4 Ring Fastener

ATTACH DOOR ARM TO TROLLEY

ALL HARDWARE SHOWN ACTUAL SIZE

Attach Emergency Release Rope and Handle

Mount the emergency release

within reach, but at least 6 feet

(1.83 m) above the ﬂ oor, avoiding

contact with vehicles to prevent

accidental release and secure with

a knot.

Pull Emergency Release Rope to

Disengage the Trolley

Slide Trolley Back 2" (5 cm) and Connect Straight

Door Arm to the Trolley

Connect Curved Door

Arm to the Door Bracket

Ensure Door is Fully Closed and

Connect Door Arms

CONNECT DOOR ARM TO TROLLEY

NOTE: If it is necessary to cut the emergency release

rope, seal the cut end with a match or lighter to prevent

unraveling. Ensure the emergency release rope and handle

are above the top of all vehicles to avoid entanglement.

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.

Straight

Door

Arm

Curved

Door

Arm

(Groove

facing out)

CORRECT

Straight

Door Arm

Curved

Door Arm

INCORRECT

IMPORTANT: The groove on the

straight door arm MUST face

away from the curved door arm.

2 3

4 5

ENGAGED

Overhand

Knot

Pull Down

to Release

Trolley

2" (5 cm)

A5 Straight Door Arm

Straight

Door

Arm

Curved

Door

Arm

C2 Nut

A1 Curved Door Arm

C4 Ring Fastener

C19 Clevis Pin

Clevis Pin

Lock

Washer

Connect Straight

Door Arm to Trolley

Connect Curved

Door Arm to

Door Bracket

C7 Hex Bolt

C18

Emergency

Release

Handle

C17 Rope

RELEASED

INSTALLING THE DOOR CONTROL

ALL HARDWARE SHOWN ACTUAL SIZE

C10 Screw C13 Drywall Anchors C11 Screw C1 Insulated Staples

Multi-Function Door Control:

Gang Box Installation

Multi-Function Door Control:

If, No Gang Box is Present

Position Door Control, Route Door Control

Wire to Motor Unit and Secure with Insulated

Staples. Permanently Mount 2 Safety Labels

Using Adhesive Backing, Tacks or Staples,

If Necessary.

LOCK

LIGHT

Carefully Remove Cover

Multi-Function Door

Controls ONLY

Connect Door Control Wires

to Motor Unit

Attach Door Control to Wall and Replace Cover

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 circuit.

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 controls.

• 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.

Connect Wire

to Door Control

Strip Door Control Wire

To release or

insert wire,

push in tab with

screwdriver.

Strip 7/16" (11 mm)

Insulation

Wire

Red Terminal

White

Terminal

Antenna

Red/White

Wire

White Wire

A21 Door Control

Button

Terminal

Screws

Do NOT strip any

insulation from the staples

Insulated

Staple

Insulated Staple

Door Control

Wire

5 FEET

(1.5 m)

MINIMUM

Door Control Button Multi-Function

Door Control

C11 Screw

C11

Screw

Single Gang Box

C13

Drywall

Anchors

C13

Drywall

Anchors

24V

Circuit

C10

Screw

C10

Screw

C10

Screw

Terminal

Screws

White

Wire

A6 Door Control: Multi-Function

Red/White

Wire

Red/White Wire

White Wire

WRONG

RIGHT

Green

Ground

Screw

Ground

Wire

Ground

Wire

Black

Wire

Black

Wire

Black

Wire

Black

Wire

White Wire

Ground

Tab

INSTALLING THE LIGHT BULB(S)

ELECTRICAL REQUIREMENTS

Remove Motor Unit

Screws and Cover

Remove Power Cord

Run Wire from

Outlet to Motor Unit

Replace Motor Unit

Cover and Screws

Flex Sides of Light Lens to

Remove Lens from Tabs

Rotate Light Lens Down Install Standard Light Bulb(s)

(100W max) into Socket(s)

Plug Motor Unit into Power Outlet

If permanent wiring is required by your local code, follow procedure below. Disconnect power to the circuit

before removing cover to establish permanent wiring connections.

To prevent possible SERIOUS INJURY or DEATH from

electrocution or ﬁ re:

• 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 ﬁ t outlet. Be sure

the opener is grounded.

NOTE: Plug motor unit into grounded power outlet. If

a grounded outlet is not available, contact a qualiﬁ ed

electrician to install a proper outlet.

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.

1 2 3 4

2 3

100 Watt (Max)

Standard Light Bulb

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 ﬂ oor.

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.

NOTE: DO NOT operate the opener at this time.

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 ﬂ ash 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 ﬂ oor. 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.

Facing the door from inside the garage

Safety Reversing Sensor

no higher than 6" (15 cm)

above ﬂ oor

Safety Reversing Sensor

no higher than 6" (15 cm)

above ﬂ oor

Invisible Light Beam

Protection Area

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.

INSTALL THE PROTECTOR SYSTEM

1 2

2a 2b 2c

ALL HARDWARE SHOWN ACTUAL SIZE

C12 Carriage Bolt

A17 Safety Reversing Sensor

A17

Safety

Reversing

Sensor

C12

Carriage

Bolts

A10

Safety Sensor

Bracket

C14 Wing Nut

Door Track

Indicator

Light

Sensor Beam

No Higher

Than 6" (15 cm)

Above Floor

Sensor Beam No Higher

Than 6" (15 cm) Above Floor

Attach with concrete

anchors (Not provided)

Lens

C14 Wing Nut

Wall installation (optional)

Assemble Safety Reversing Sensors Mount Brackets

Floor installation (optional)

Mount Brackets: Mounting Options

Garage door track installation (preferred)

Wall installation with

Extension Brackets (optional)

Fasten 2x4 to Wall with

Lag Screws (Not Provided)

Sensor Beam

No Higher Than

6" (15 cm)

Above Floor

Sensor Beam

No Higher Than

6" (15 cm)

Above Floor

Lag Screws

(Not Provided)

Inside Garage Wall

Extension Bracket

(see Accessories)

(Provided

with

Extension

Bracket)

(Provided with

Extension Bracket)

NOTE: The safety reversing sensor must

be connected and aligned correctly

before the garage door opener will move

in the down direction.

OR OR

Safety Reversing Sensors

MUST be aligned and no higher

than 6" (15 cm) above ﬂ oor

Safety Reversing Sensors

MUST be aligned and no higher

than 6" (15 cm) above ﬂ oor

Run Safety Reversing Sensor Wire to Motor Unit

and Secure with Insulated Staples

Separate the Black/White and the White Wires

Connect Safety Reversing Sensors to

Motor Unit

Option A: Installation Without Pre-Wiring

WIRE SAFETY REVERSING SENSOR

3.1a

3.3a

3.2a

ALL HARDWARE SHOWN ACTUAL SIZE

C1 Insulated Staples

Insulated Staple

PRE-WIRED INSTALLATIONS: If your garage already

has wires installed for the safety reversing sensors,

refer to the instructions on the following page.

Insert the white wires into the

white terminal on the garage door

opener. Insert the white/black

wires into the grey terminal on the

garage door opener.

To insert or remove the wires

from the terminal, push in the

tab with a screwdriver tip.

Strip 7/16 inch (11 mm) of insulation from each set

of wires. Separate the wires. Twist the white wires

together. Twist the white/black wires together.

Strip 7/16" (11 mm)

7/16" (11 mm)

Cut Safety Reversing Sensor Wires Strip Safety Reversing Sensor Wires and

Pre-Installed Wires

Connect Wires Together

Connect Like Colored Wires Together Connect Wires to Garage Door Opener

Option B: Installation With Pre-Wiring

WIRE SAFETY REVERSING SENSOR

Cut the end of the

safety sensor wire,

making sure there is

enough wire to reach

the pre-installed

wires from the wall.

Separate the safety sensor wires and strip 7/16 inch (11 mm)

of insulation from each end. Choose two of the pre-installed

wires and strip 7/16 inch (11 mm) of insulation from each end.

Make sure that you choose the same color pre-installed wires

for each sensor.

7/16"

(11 mm)

7/16"

(11 mm)

Safety

sensor

wires

Pre-installed wires

Connect the pre-installed wires to the sensor wires with wire

nuts making sure the colors correspond for each sensor. For

example, the white wire would connect to the yellow wire and

the white/black wire would connect to the purple wire.

White

White/Black

Yellow

(for example)

Purple (for example)

Not Provided

Pre-installed

wires

At the garage door opener, strip 7/16 inch (11 mm) of

insulation from each end of the wires previously chosen for

the safety sensors. Twist the like-colored wires together.

7/16"

(11 mm)

Yellow

Purple

Safety

sensor

wires

Insert the wires that are connected to the white safety sensor

wires to the white terminal on the garage door opener. Insert the

wires that are connected to the white/black safety sensor wires

to the grey terminal on the garage door opener.

Purple

(for example)

Yellow

(for example)

To insert or remove the wires

from the terminal, push in the

tab with a screwdriver tip.

3.1b

3.3b

3.4b 3.5b

3.2b

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Chamberlain 248730 User manual

Brand: Chamberlain

Model: 248730

Category: Garage Door Opener

Type: User manual

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