• 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 garage door opener are required to ensure
safe operation.
Owner’s Manual
B500 • B503 • B510
Belt Drive
Garage Door Opener
FOR RESIDENTIAL USE ONLY
PRE-PROGRAMMED REMOTE CONTROL
INCLUDED
TO WATCH VIDEOS GO TO:
tinyurl.com/lgh5x3h
• The model number label is located on the left side panel of your
garage door opener.
• This garage door opener is compatible with MyQ® and
Security+2.0® accessories.
• DO NOT install on a one-piece door if using devices or features
providing unattended close. Unattended devices and features are
to be used ONLY with sectional doors.
Repair Parts .................................43-44
www.chamberlain.com
www.mychamberlain.com
Torsion
Spring
Extension
Spring
OR
Preparation
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.
Whenyou see these Safety Symbols and Signal Words on
the following pages, they wi ll alert you to the possibil ity of
Mechanical
serious injury or death i f you do not comply wi th the
warnings that accompany them.The hazard may come
from something mechanical or from electric shock. Read
Electrical
the warnings carefully.
Whenyou see this Signal Word on the followi ng 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
themcarefully.
WARN ING: This product can expose you to chemicals i ncluding lead, which are known to the State of
California to causecancer or birth defects or other reproductive harm. For more information go to
www.P65Warnings.ca.gov
Unattended Operation
The Timer-to-Cl ose (TTC) feature, the MyQ®Smartphone Control app, and MyQ®Garage Door and Gate Monitor
are examples of unattended close and are to be used ON LY with sectional doors. Any device or feature that allows the
door to close without being in the li ne of si ght of the door is consideredunattended close. The T imer-to-Close (TTC)
feature, the MyQ®Smartphone Control, and any other MyQ®devices are to be used ONLY with sectional doors.
Check the Door
To prevent possible SERIOUSINJURYor DEATH :
l ALWAYScall a trained door systems technician if garage door binds, sticks, or is out of balance. An
unbalanced garage door may NOT reverse when r equired.
l NEVER try to loosen, move or adjust garage door, door springs, cables, pulleys, brackets or their hardware,
ALLof w hich are under EXTR EME tension.
l Disable ALLlocks and r emoveALLropes connected to garage door BEFORE installation and operating
garage door opener to avoid entanglement.
l DO NOT install on a one-piece door if using devices or features providing unattended close. Unattended
devices and features are to be used ONLY with sectional doors.
To prevent damage to garage door and opener:
l ALWAYSdisable locks BEFORE installing and operating the opener.
l ONLY operate garage door opener at 120V, 60Hz to avoid malfunction and damage.
Before you begin:
1. Disable locks and remove any r opes connectedto the garage door.
2. Lift the door halfway up. R elease the door. If balanced, it should stay in place,
supportedentirely by its springs.
3. Raise and lower the door to check for binding or sticki ng. If your door binds,
sticks, or is out of balance, call a traineddoor systems technician.
4. Check the seal on the bottomof the door. Any gap between the floor and the
bottom of the door must not exceed 1/4 inch (6 mm). Otherwise, the safety
reversal system may not work properly.
5. 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 w ithin 4feet (1.2m) to the left or right of the door center. See page 12.
2
3/16
7/16
1/2
5/32
5/16
5/8
9/16
1/4
7/16
Preparation
Additional Items You May Need:
Survey your garage area to see if you w ill needany of the following items:
n (2) 2X4 PIECES OF WOOD
May be used to fasten the header bracket to the structural supports. Also used to position the garage door
opener during installation and for testing the safety reversi ng sensors.
n SUPPORT BR ACKET AND FASTENIN G H ARDWARE
Must be used if you have a finished ceiling in your garage.
n EXTENSION BRACK ETS (MODEL 041A5281-1) OR WOOD B LOCKS
Dependingupon garage construction, extension brackets or wood blocks may be neededto install the
safety reversing sensor.
n FASTENIN G H ARDWARE
Alternate floor mounting of the safety r eversing sensor will require hardware not provided.
n DOOR REINFORC EMENT
Required if you have a lightweight steel, aluminum,fiberglass or glass panel door.
n RAIL EXTENSION K IT
Required if your garage door is more than 7 feet (2.13m) high.
Tools Needed
3
OR
P
Preparation
Carton Inventory
Save the cartonand packing material until the installation and adjustment is complete. Instructions for the accessories
will be attachedto the accessory andare not i ncluded in this manual. The images throughout this manual are for
reference only and your product may look different.
Model PowerDoo r C ont rolRemot e ControlWireless Keypad
B500Med Lift Power System™Multi-Function1-button(2)
B503Med Lift Power System™Multi-Function3-button(2)
B510Med Lift Power System™Multi-Function3-button(2)
A. Header bracket
B. Pulley
C. D oor bracket
D. C urved door arm
E. Straight door arm (Packaged inside front rail section)
F. T rolley
NOTE: Be sure to assemble the trolley before sliding onto rail.
G. Emergency r elease rope and handle
H. R ail (1 front and 4 center sections)
I. Hanging brackets (2) ( Packagedinside the fr ont rail section)
J. Garagedoor opener (motor unit)
K. Sprocket cover and scr ews
L. “U ” bracket
M. Belt
N. D oor control
O. Remote control
P. The Prot ector System
Safety reversi ng sensors wi th 2 conductor white and white/black wire attached: Sending Sensor (1),
Receiving Sensor (1), and Safety Sensor Brackets (2)
NOT SH OWN
Wireless Keypad
White and red/white wire
Owner's manual
Hardware
®
ü
4
ASSEMBLYINSTALLATION
DOOR CONTROL
Insulated Staples
(Not
Shown)
Clevis Pin 5/16"x1-1/2"
Ring
Fastener (3)
Hex Bolt 5/16"-18x7/8" (4)
Self-Threading Screw
1/4"-14x5/8" (2)
Clevis Pin 5/16"x1"Clevis Pin 5/16"x1-1/4"
Carriage Bolt
1/4"-20x1/2" (2)
Wing Nut
1/4"-20 (2)
Lag Screw 5/16"-9x1-5/8" (4)
Screw 6ABx1" (2)
Drywall Anchors (2)
Screw 6-32x1" (2)
Hex Screw #8x3/8" (2)
(packed with the
sprocket cover)
Bolt
1/4"-20x1-3/4"
Lock Nut
1/4"-20
Bolt
Nut 3/8"
Lock Washer 3/8"
Master Link
Threaded
Shaft with
Spring
Trolley Nut
Lock Washer
5/16"-18 (4)
Nut
5/16"-18 (4)
Preparation
Hardware
5
Assembly
Wear Pads
Front Rail Section
(TO DOOR)
“U” Bracket
(TO MOTOR UNIT)
Trolley
Rail Tab
On Top
Slide to stops
on top and sides
of “U” bracket
Screwdriver
STEP 1 Assemble the rail and install the trolley
To prevent INJURY from pinching, keephands and fingers away from the joints while assembling the r ail.
To avoid installation difficulties, do not run t he garage d oor op ener until instructed t o do so.
The front rail has a cut out “w indow” at the door end. The rail tab MUST be on top of the r ail when assembled.
1. Remove the straight door arm and hangingbracket packaged inside the front r ail and set aside for
Installation Step 5 and 9. NOTE: To prevent INJURY w hile unpacking the rail carefully remove the straight
door arm stored w ithin the rail section.
2. Align the rail sections on a flat surface as shown and slide the tapered ends intothe larger ones. Tabs
along the side will lock into place.
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 frontend of the rail.
4. As a temporary stop, insert a screwdriver into the hole in the second r ail section fr om the motor unit, as
shown.
5. Check to be sure there are 4 plastic w ear 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 toward the screwdriver as shown.
7. Slide the rail onto the “U” bracket, until it reaches all the stops on the top and sides of the “U ” bracket.
6
Assembly
Bolt
1/4"-20x1-3/4"
Lock Nut
1/4"-20
HARDWARE
“U” Bracket
Cover Protection
Bolt Hole
Bolt
Lock Nut
Bolts (Mounted in the
garage door opener)
STEP 2 Fasten the rail to the motor unit
To avoid SERIOU S damageto garage door opener, use ONLY those bolts/fasteners mounted in the top of the
opener.
1. Insert a 1/4"-20 x 1-3/4" bolt into the cover protection bolt hole on the back end of the rail as shown. Tighten
securely with a 1/4"-20 lock nut. D O NOT overtighten.
2. Remove the bolts from the top of the motor unit.
3. Use the carton to support the front end of the rail .
4. Place the “U ” bracket, flat side down onto the motor unit and align the bracket holes w ith the bolt holes.
5. Fasten the “ U” bracket with the previously removed bolts; D O N OT use any power tools. The use of power
tools may permanently damage the garage door opener.
7
Assembly
Rail
Idler Pulley
Grease Inside
Pulley
Bolt
Belt
Lock Washer
Nut
Bolt
Nut 3/8"Lock Washer 3/8"
HARDWARE
Trolley Connector
Rail Tab
STEP 3 Install the idler pulley
1. Lay the belt beside the rail, as shown. Grasp the end with the hooked trolley connector and pass
approximately 12" (30 cm) of belt through the w indow. Keep the r ibbed side toward the rail, and allow it to
hanguntil Assembly Step 4.
2. Remove the tape from the idler pulley. The inside center should be pre-greased. If dry, regrease to ensure
proper operation.
3. Place the idler pulley intothe window as shown.
4. Insert the idler bolt from the top through the rail and pulley. Tightenwith a 3/8" lock washer and nut
underneath the rail until the lock washer is compressed.
5. Rotate the pulley to be sure it spins freely.
6. Locate the rail tab. The rail tab is between the idler bolt and the trolley in the front rail section. Use a
flathead screwdriver and lift the rail tab until the tab is vertical (90º).
8
Assembly
HARDWARE
Master Link
Figure 3
Threaded Shaft with Spring Trolley Nut
Threaded Shaft
Master Link
Sprocket
Figure 2
Figure 1
Trolley
Connector
Retaining
Slot
STEP 4 Install the belt
1. Pull the belt around the idler pulley and toward the trolley. The ribbed si de must contact the pulley.
2. Hook the troll ey connector into the retaining sl ot on the tr olley as shown ( Figure 1).
3. With the trolley against the screwdriver, dispense the remainder of the belt along the rail lengthtoward the
motor unit and around the sprocket (Figure 2). The sprocket teeth must engage the belt.
4. Check to make sure the belt i s not twisted.Connect the trolley threaded shaft wi th the master link(Figure
3).
l Push pins of master link bar through holes i n end of belt and trolley threaded shaft.
l Push master link cap over pins and past pin notches.
l Slide the closed end of the clip-on spring over one of the pins. Push the open end of the clip-on spring
ontothe other pin.
5. Remove the spring trolley nut from the threaded shaft.
6. Insert the trolley threaded shaft through the hole in the troll ey.
9
Assembly
Spring
Trolley Nut
Nut Ring Slot
Nut RingNut Ring
AFTER
1-1/4" (3.18 cm)
BEFORE
1" (2.5 cm)
Hex Screw #8x3/8"
(Packed with the sprocket cover)
HARDWARE
Hex Screw #8x3/8"
Sprocket Cover
STEP 5 Tighten the belt
1. By hand, thread the spring trolley nut on the threadedshaft until i t is finger tight against the trolley. Do not
use any tools. Remove the screwdriver.
2. Insert a flathead screwdriver tip into one of the nut r ing slots and brace it firmly against the trolley.
3. Tighten the spring trolley nut w ith an adjustable wrench or a 7/16" openendwrench about a quarter turn
until the spring releases and snaps the nut ring against the troll ey. This sets the spring to optimum belt
tension.
STEP 6 Install the sprocket cover
To avoid possible SERIOUS INJURY to finger fr om moving garage door opener:
l ALWAYSkeep handclear of sprocket while operating opener.
l Securely attach sprocket cover BEFORE operating.
1. Position the sprocket cover over the sprocket as shown and fasten to the mountingplate with 8x3/8" hex
screws provided.
You have n ow finished assembling your garage doo r o pener. Please read the following warnings before
proceeding t o the installation section.
10
Installation
Change 5. to say "Where possible, i nstall the door opener 7 feet (2.13 m) or more above the floor." per regulatory Bill Carrey.
IMPORTANT INSTALLATION INSTRUCTIONS
To reduce the risk of SEVERE INJURY or DEATH:
1. READ AND FOLLOW ALL INSTALLATION WARN INGS AND INSTRUCTIONS.
2. Install garage door opener ON LY on properly balanced and lubricated garage door. An improperly balanced
door may N OT reverse whenrequired and could result in SEVERE INJU RY or DEATH.
3. ALL repairs to cables, spring assemblies and other hardware MUST be made by a tr ained door systems
technician BEFORE installing opener.
4. Disable ALL locks and r emoveALL ropes connected to garage door BEFORE installing opener to avoid
entanglement.
5. Where possible, install the door opener 7 feet (2.13 m) or more above the floor.
6. Mountthe emergency release w ithin reach, but at least 6 feet (1.83m) above the floor and avoiding contact
with vehicles to avoid accidental r elease.
7. NEVER connect garage door opener to power source until instructed to do so.
8. NEVER w ear w atches, rings or loose clothing while installing or servicing opener. They could be caughtin
garage door or opener mechanisms.
Step 11. changed" manual" to "emergency" label. Per Bill C. regulatory. Updated in 114A5010MDR. Updated in
114A4862,114A5051. - LTB
9. Install wall-mounted garage door control:
l within sight of the garage door.
l out of reach of small children at a minimum height of 5feet (1.5m) above floors, landings, steps or any
other adjacent walking surface.
l away from ALL moving parts of the door.
10. Place entrapmentwarning l abel on wall next to garage door control.
11. Place emergency r elease/safety r everse 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"
(3.8cm) high object (or a 2x4 laid flat) on the floor.
13. To avoid SERIOU S PERSONAL INJURY or DEATH from electrocution, disconnect ALL electric power
BEFORE performing ANY service or maintenance.
14. DO NOT install on a one-piece door if using devices or features providing unattendedclose. U nattended
devices and features are to be used ONLY with sectional doors.
11
Installation
Header Wall
Vertical Centerline of Garage Door
2x4
Structural
Supports
Level
(Optional)
Unfinished
Ceiling
2x4
OPTIONAL CEILING MOUNT
FOR HEADER BRACKET
Sectional door with curved track
Header Wall
Track
2" (5 cm)
Highest
Point of
Travel
Door
One-piece door with horizontal track
Header Wall
Track
2" (5 cm)
Highest
Point of
Travel
Door
One-piece door without track:
jamb hardware
Header Wall
8" (20 cm)
Highest
Point of
Travel
Door
Jamb
Hardware
One-piece door without track:
pivot hardware
Header Wall
8" (20 cm)
Highest
Point of
Travel
Door
Pivot
STEP 1 Determine the header bracket location
To prevent possible SERIOUS IN JUR Y or D EATH:
l Header bracket MUST be R IGIDLY fastened to str uctural support on header wall or ceiling, otherwise
garage door might NOT reverse whenrequired. DO NOT install header bracket over dryw all.
l Concrete anchors MUST be used if mountingheader bracket or 2x4 into masonry.
l NEVER try to loosen, move or adjust garage door, springs, cables, pulleys, brackets, or their hardware, ALL
of which are under EXTR EME tension.
l ALWAYScall a trained door systems technician if garage door binds, sticks, or is out of balance. An
unbalanced garage door might N OT reverse whenrequired.
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.Youcan 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 i n the w ay; or you can
attach it to the ceil ing (see page 13) w hen clearance is minimal. (It may be mounted on the w all upside
down if necessary, to gain approximately 1/2" (1 cm). If you needto 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. Dr aw an intersecting horizontal line on the header
l 2" ( 5 cm) above the high point for sectional door and one-piece door w ith track.
l 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 maximumheight possible, or refer to page13 for ceiling installation.
wall 2" ( 5 cm) above the high point:
12
Installation
Lag Screw 5/16"-9x1-5/8"
HARDWARE
UP
Wall Mounting
Holes
WALL INSTALLATION
CEILING INSTALLATION
Optional Mounting
Holes
Vertical
Centerline of
Garage Door
Header Wall
Header
Bracket
2x4
Structural
Support
Door
Spring
Garage Door
Highest Point
of Garage
Door Travel
Horizontal
Line
Lag
Screw
UP
Header Wall
Ceiling Mounting
Holes
Finished Ceiling
Vertical
Centerline of
Garage Door
Header
Bracket
6" (15 cm)
Maximum
Door Spring
Garage Door
Lag Screw
STEP 2 Install the header bracket
You can attach the header bracket either to the w all above the garage door, or to the ceiling. Follow the instructions
which wi ll work best for your particular r equirements. D o not install t he header bracket over drywall. If installing
into masonry, use concrete anchors (not pro vided).
OPTION A - WALL INSTALLATION
1. Center the bracket on the vertical centerline w ith the bottom edge of the bracket on the horizontal line as
shown ( with the arrow pointing toward the ceiling).
2. Mark the vertical set of bracket holes. D ril l 3/16" pilot holes and fasten the bracket securely to a structural
OPTION B - CEILING INSTALLATION
1. Extend the vertical centerline onto the ceiling as shown.
2. Center the bracket on the vertical mark, no more than 6" (15 cm) from the wall. Make sure the arr ow is
3. Mark the side holes. D rill 3/16" pilot holes and fasten bracket securely to a structural support wi th the
support with the hardware provided.
pointing away from the w all. The bracket can be mounted flush against the ceili ng when clearance is
minimal.
hardware provided.
13
Installation
HARDWARE
Clevis Pin
5/16"x1-1/2"
Ring Fastener
Clevis Pin
Ring Fastener
ConnectedDisconnected
One-piece door
without tracks
2x42x4
All other
door types
STEP 3 Attach the rail to the header bracket
1. 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 w ay, you will need help. Have someone hold the opener securely on a
temporary support to allow the rail to clear the spring.
2. Position the rail bracket against the header bracket.
3. Align the bracket holes and join with a clevis pin as shown.
4. Insert a ring fastener to secure.
STEP 4 Position the garage door opener
To prevent damage to garage door, rest garage door opener r ail on 2x4 placed on top section of door.
1. Remove the packing material and l ift the garage door opener onto a ladder.
2. Fully open the door and place a 2x4 (laid flat) under the r ail. For one-piece doors w ithout tracks, lay the
2x4 on it's side.
NOTE: A 2x4 is ideal for setting the distancebetweenthe rail and the door. If the ladder is not tall enough you will
needhelp at this point. If the door hits the trolley whenit is r aised, pull the trolley r elease arm down to disconnect the
inner and outer trolley. Slide the outer trolley toward the garage door opener. The tr olley can remain disconnected
until instructed.
14
Installation
Finished Ceiling
Lag Screw
1
2
3
Not
Provided
Not Provided
Not Provided
Hex Bolt
Nut
Lock
Washer
45
6
Lag Screw
Finished Ceiling
EXAMPLES
Unfinished Ceiling
HARDWARE
Hex Bolt
5/16"- 18x7/8"
Nut
5/16"-18
Lock Washer
5/16"-18
Lag Screw
5/16"-9x1-5/8"
STEP 5 Hang the garage door opener
To avoid possible SERIOUS INJURY from a falling garage door opener, fasten it SECU RELY to structural
supports of the garage. Concrete anchors MUST be used if installi ng ANY brackets into masonry.
Hanging the garage door opener will vary dependingon your garage. Below are three example installations. Your
installation may be different. For ALL installations the garage door opener MUST be connectedto structural supports.
The instructions il lustrate one of the examples below.
1. On finished ceilings, use the lag screws to attach a support bracket (not provided) to the structural
supports before installing the garage door opener.
2. Make sure the garage door opener is aligned w ith the header bracket. Measure the distance from each side
of the garage door opener to the support bracket.
3. Cut both pieces of the hanging bracket to required lengths.
4. Attach the end of each hanging bracket to the support bracket with appropriate hardware (not provided).
5. Attach the garage door opener to the hanging brackets wi th the hex bolts, lock washers, and nuts.
6. Remove the 2x4 and manually close the door. If the door hits the rail, raise the header bracket.
15
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