Chamberlain HD520EVG User manual

www.chamberlain.com
CONTENTS
Preparation .............................. 1-4
Assembly................................. 5-9
Installation............................ 10-19
Install the Door Control ............. 20-21
Install the Protector System®...... 22-25
Power.................................. 26-27
Adjustments .......................... 28-30
Operation.................................. 31
Features................................... 32
Door Control .......................... 33-34
Remote Control ...................... 34-35
To Erase the Memory.................... 35
To Open the Door Manually ............ 36
Maintenance.............................. 37
Troubleshooting...................... 38-39
Accessories............................... 40
Warranty .................................. 41
Repair Parts .......................... 42-43
1/2 hp Belt Drive
Garage Door Opener
■ 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.
■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.
Serial Number:
Date of Purchase:
Model HD520EVG
FOR RESIDENTIAL USE ONLY
Write down the following information
for future reference:
.
.
The Chamberlain Group, Inc.
845 Larch Avenue
Elmhurst, Illinois 60126-1196

1
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 strictaccordance with the instructionsand warnings contained in this
manual.
When you see these SafetySymbolsand 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.
Mechanical
Electrical
When you see this Signal Word on the following pages,it will alertyou to the possibilityofdamage to
your garage door and/or the garage door opener if you do notcomply with the cautionarystatementsthat
accompany it. Read them carefully.
Unattended Operation
The Timer-to-Close (TTC) feature, the MyQ®Smartphone Control app, and MyQ®Garage Door and
Gate Monitor are examples of unattended close and are to be used ONLY with sectional doors.Any
device or feature that allowsthe door to close without being in the line of sight ofthe door isconsidered
unattended close. The Timer-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 SERIOUS INJURY or DEATH:
lALWAYS call a trained door systemstechnician if garage door binds,sticks,or is out of balance.
An unbalanced garage door may NOT reverse when required.
lNEVER try to loosen, move or adjust garage door, door springs, cables, pulleys, brackets or their
hardware, ALL of which are under EXTREME tension.
lDisable ALL locksand remove ALL ropes connected to garage door BEFORE installation and
operating garage door opener to avoid entanglement.
lDO 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:
lALWAYS disable locks BEFORE installing and operating the opener.
lONLY operate garage door opener at 120 V, 60 Hz to avoid malfunction and damage.
Before you begin:
1. Disable locks and remove any ropes connected to the garage door.
2. Lift the door halfway up. Release the door. If balanced, it should stay
in place, supported entirely by its springs.
3. Raise and lower the door to check for binding or sticking. If your door
binds, sticks, or is out of balance, call a trained door systems
technician.
4. Check the seal on the bottom of 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.Ifthere
is a torsion spring or center bearing plate in the way ofthe header
bracket, it may be installed within 4feet (1.2 m) to the left or right of
the door center. See page11.
Torsion
Spring
Extension
Spring
OR
Preparation

2
Additional Items You May Need:
Survey your garage area to see if you will need any of the following items:
n(2) 2X4 PIECES OF WOOD
Maybe used to fasten the header bracketto the structural supports.Also used to position the
garage door opener during installation and for testing the safety reversing sensors.
nSUPPORT BRACKET AND FASTENING HARDWARE
Mustbe used if you have a finished ceiling in your garage.
nEXTENSION BRACKETS (MODEL 041A5281-1) OR WOOD BLOCKS
Depending upon garage construction, extension brackets or wood blocks may be needed to
install the safety reversing sensor.
nFASTENING HARDWARE
Alternate floor mounting of the safetyreversing sensor will require hardware not provided.
nDOOR REINFORCEMENT
Required if you have a lightweight steel, aluminum, fiberglass or glass panel door.
nRAIL EXTENSION KIT
Required ifyour garage door is more than 7 feet (2.13 m) high.
Tools Needed
3/16
7/16
1/2
5/32
5/16
5/8
9/16
1/4
7/16
Preparation

3
Carton Inventory
Your garage door opener is packaged in one carton which contains the motor unit and all parts
illustrated below. Accessories vary depending on the garage door opener model purchased. Depending
on your model, other accessories may be included with your garage door opener. Instructions for these
accessorieswill be attached to the accessory and are not included in this manual.Save the carton and
packing material until the installation and adjustment is complete. The images throughout this manual
are for reference only and your product may look different.
A. Header bracket
B. Pulley
C. Door bracket
D. Curved door arm
E. Straight door arm
(Packaged inside front rail section)
F. Trolley
NOTE: Be sure to assemble the trolley before sliding onto rail.
G. Emergency release rope and handle
H. Rail (1 front and 4 center sections)
I. Hanging brackets (2)
(Packaged inside the front rail section)
J. Garage door opener (motor unit)
K. Sprocket cover and screws
L. “U” bracket
M. Belt
N. Multi-function control panel (model 41A7185-1)
O. Remote control (model 953ESTD)
P. The Protector System®
Safety reversing sensors with 2 conductor white and white/blackwire attached:Sending Sensor
(1), Receiving Sensor (1),and Safety Sensor Brackets(2)
Q. MyQ®Internet Gateway (model CIGBU)
NOT SHOWN
White and red/white wire
Owner's manual
Hardware
Preparation

4
Hardware
Clevis Pin 5/16"x1-1/2"
Ring Fastener (3)
Hex Bolt 5/16"-18x7/8" (4)
Lock Washer
5/16"-18 (5)
Nut
5/16"-18 (6)
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)
ASSEMBLY INSTALLATION
Screw 6ABx1" (2)
Drywall Anchors (2)
Screw 6-32x1" (2)
DOOR CONTROL
Insulated
Staples
(Not Shown)
Lag Screw 5/16"-9x1-5/8" (4)
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
Spring
Trolley Nut
Threaded
Shaft
with
Preparation

5
Assembly
STEP 1 Assemble the rail and install the trolley
To prevent INJURY from pinching, keep hands and fingers away from the joints while assembling the
rail.
To avoid installation difficulties, do not run the garage dooropener until instructed to do so.
The front rail has a cut out “window” at the door end. The rail tab MUST be on top of the rail when
assembled.
1. Remove the straight door arm and hanging bracket packaged inside the front rail and set aside
for Installation Step 5 and 9. 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 endsinto the 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 backend of the rail on
top. For convenience, put a supportunder the front end of the rail.
4. As a temporary stop, insert a screwdriver into the hole in the second rail section from the motor
unit, 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 trolleyassembly 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.
To garage
door opener
(TO MOTOR UNIT)
Front Rail
Section
(TO DOOR)
“U” Bracket
Outer Trolley
Inner Trolley
Wear Pads
SLIDE TO STOPS
ON TOP AND
SIDES OF
“U” BRACKET
Trolley
Rail Tab

6
Assembly
STEP 2 Fasten the rail to the motor unit
To avoid SERIOUS damage to garage door opener, use ONLY those bolts/fasteners mounted in the
top of the opener.
1. Insert a 1/4"-20x1-3/4" 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. DO NOT overtighten.
2. Remove the bolt and nut from the top ofthe motor unit.
3. Use the carton to support the frontend of the rail.
4. Place the “U” bracket,flat side down onto the motor unit and align the bracket holes with the bolt
holes.
5. Fasten the “U” bracket with the previously removed bolt and lock nut; DO NOT use any power
tools. The use of power tools may permanently damage the garage door opener.
HARDWARE
Bolt 1/4"-20x1-3/4" Lock Nut 1/4"-20
“U” Bracket
Cover Protection
Bolt Hole
Bolt 1/4"-20x1-3/4"
Lock Nut 1/4"-20
Lock Nut (Mounted in
the garage door opener)
Bolt (Mounted in the
garage door opener)

7
Assembly
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 window. Keep the ribbed side toward the rail, and
allow it to hang until Assembly Step 4.
2. Remove the tape from the idler pulley.The inside center should be pre-greased. Ifdry,regrease
to ensure proper operation.
3. Place the idler pulley into the window asshown.
4. Insertthe idler bolt from the top through the rail and pulley.Tighten with a 3/8" lock washer and
nut underneath the rail until the lockwasher 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 trolleyin the frontrail section. Use
a flathead screwdriver and liftthe rail tab until the tab is vertical (90º).
HARDWARE
Bolt Nut 3/8"
Lock Washer 3/8"
Rail
Trolley Connector
Bolt
Lock Washer 3/8"
Nut 3/8"
Rail Tab
CORRECT
INCORRECT
Rail Tab
Idler Pulley
Grease Inside Pulley

8
Assembly
STEP 4 Install the belt
1. Pull the belt around the idler pulley and toward the trolley.The ribbed side mustcontactthe
pulley.
2. Hook the trolley connector into the retaining slot on the trolley as shown (Figure 1).
3. With the trolleyagainstthe screwdriver, dispense the remainder of the beltalong the rail
lengthtoward the motor unit and around the sprocket (Figure 2). The sprocket teeth must engage
the belt.
4. Check to make sure the belt is nottwisted. Connectthe trolleythreaded shaft with the master link
(Figure 3).
lPush pins of master link bar through holes in end of belt and trolley threaded shaft.
lPush master link cap over pins and past pin notches.
lSlide the closed end ofthe clip-on spring over one ofthe pins.Push the open end of the
clip-on spring onto the other pin.
5. Remove the spring trolley nut from the threaded shaft.
6. Insertthe trolley threaded shaft through the hole in the trolley.
HARDWARE
Master
Link
Threaded Shaft with Spring Trolley Nut
Sprocket
Figure 3
Threaded Shaft
Master Link
Figure 2
Trolley Connector
Figure 1
Retaining
Slot

9
Assembly
STEP 5 Tighten the belt
1. By hand, thread the spring trolley nut on the threaded shaft until it is finger tight against the
trolley. Do not use any tools. Remove the screwdriver.
2. Inserta flathead screwdriver tip into one of the nutring slotsand brace it firmlyagainst the trolley.
3. Tighten the spring trolley nutwith an adjustable wrench or a 7/16" open end wrench abouta
quarter turn until the spring releases and snaps the nut ring againstthe trolley.This sets the
spring to optimum belt tension.
Nut Ring
BEFORE
1"
(2.5 cm)
Nut Ring
AFTER
1-1/4"
(3.18 cm)
Spring
Trolley Nut
Nut Ring Slot
STEP 6 Install the sprocket cover
To avoid possible SERIOUS INJURY to finger from moving garage door opener:
lALWAYS keep hand clear ofsprocket while operating opener.
lSecurely attach sprocket cover BEFORE operating.
1. Position the sprocket cover over the sprocket as shown and fasten to the mounting plate with
8x3/8" hex screws provided.
You have now finished assembling your garage door opener. Please read the following warnings
before proceeding to the installation section.
Hex Screw #8x3/8"
(Packed with the
sprocket cover)
HARDWARE
Hex Screw #8x3/8"
Sprocket Cover

10
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 locksand 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 emergencyrelease within reach, butatleast 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:
lwithin sight of the garage door.
lout of reach of children at minimum height of 5 feet (1.5m).
laway 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.
13. To avoid SERIOUS 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 unattended close.
Unattended devices and features are to be used ONLY with sectional doors.

11
Installation
STEP 1 Determine the header bracket location
To prevent possible SERIOUS INJURY or DEATH:
lHeader bracket MUST be RIGIDLY fastened to structural supporton header wall or ceiling,
otherwise garage door might NOT reverse when required. DO NOT install header bracket over
drywall.
lConcrete anchors MUST be used if mounting header bracket or 2x4 into masonry.
lNEVER try to loosen, move or adjust garage door, springs, cables, pulleys, brackets, or their
hardware, ALL of which are under EXTREME tension.
lALWAYS call a trained door systemstechnician if garage door binds,sticks,or is out of balance.
An unbalanced garage door might NOT reverse when required.
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 ofthe garage door.
2. Extend the line onto the header wall above the door.You can fasten the header bracketwithin 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 12) when clearance isminimal. (Itmay 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 (notprovided) to securely
fasten the 2x4 to structural supports as shown here and on page 12.
3. Open your door to the highest point of travel as shown. Draw an intersecting horizontal line on
the header wall 2" (5 cm) above the high point :
l2" (5 cm) above the high pointfor sectional door and one-piece door with track.
l8" (20 cm) above the high point for one-piece door without track.
This heightwill 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 12 for
ceiling 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

12
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).
HARDWARE
Lag Screw 5/16"-9x1-5/8"
OPTION A WALL INSTALLATION
1. Center the bracket on the vertical centerline with the bottom edge of the bracket on the horizontal
line asshown (with the arrowpointing toward the ceiling).
2. 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.
UP
Wall Mount
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
5/16"-9x1-5/8"
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
arrow is pointing away from the wall. The bracket can be mounted flush against the ceiling when
clearance is minimal.
3. Mark the side holes. Drill 3/16" pilot holes and fasten bracket securely to a structural support with
the hardware provided.
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
5/16"-9x1-5/8"

13
Installation
STEP 3 Attach the rail to the header bracket
1. Position the opener on the garage floor below the header bracket.Use packing material asa
protective base.
NOTE: Ifthe door spring is in the way, 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 holesand join with a clevispin as shown.
4. Insert a ring fastener to secure.
HARDWARE
Clevis Pin 5/16"x1-1/2" Ring Fastener
Clevis Pin
5/16"x1-1/2"
Ring Fastener
STEP 4 Position the garage door opener
To prevent damage to garage door,restgarage door opener rail on 2x4 placed on top section of door.
1. Remove the packing material and lift the garage door opener onto a ladder.
2. Fully open the door and place a 2x4 (laid flat) under the rail. For one-piece doors withouttracks,
lay the 2x4 on it's side.
NOTE: A 2x4 is ideal for setting the distance between the rail and the door. If the ladder is not tall
enough you will need help at this point. If the door hits the trolley when it is raised, pull the trolley release
arm down to disconnect the inner and outer trolley. Slide the outer trolley toward the garage door
opener. The trolley can remain disconnected until instructed.
One-piece
door without
tracks
All other door types
Connected Disconnected

14
Installation
STEP 5 Hang the garage door opener
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.
Hanging the garage door opener will vary depending on your garage. Below are three example
installations. Your installation may be different. For ALL installations the garage door opener MUST be
connected to structural supports.The instructions illustrate one ofthe examplesbelow.
Finished
Ceiling
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"
1. On finished ceilings, use the lag screwsto attach a support bracket (notprovided) to the structural
supports before installing the garage door opener.
2. Make sure the garage door opener isaligned with the header bracket.Measure the distance
from each side of the garage door opener to the supportbracket.
3. Cut both pieces of the hanging bracket to required lengths.
4. Attach the end ofeach hanging bracketto the support bracket with appropriate hardware (not
provided).
5. Attach the garage door opener to the hanging bracketswith the hexbolts,lock washers,and
nuts.
6. Remove the 2x4 and manually close the door.Ifthe door hits the rail,raise the header bracket.
Finished
Ceiling (not provided)
(not provided)
Lag Screw
5/16"-
9x1-5/8"
Lag Screw
5/16"-
9x1-5/8"
123
(not
provided)
Hex Bolt
5/16"- 18x7/8"
Nut 5/16"-18
Lock Washer
5/16"-18
456

15
Installation
STEP 6 Install the light bulbs
To prevent possible OVERHEATING of the end panel or light socket:
lUse ONLY A19 incandescent (100W maximum) or compact fluorescent (26W maximum) light
bulbs.
lDO NOT use incandescent bulbs larger than 100W.
lDO NOT use compact fluorescent light bulbs larger than 26W (100W) equivalent.
lDO NOT use halogen bulbs.
lDO NOT use short neck or specialty light bulbs.
1. Pull on the top sides of the light lens and rotate the light lens down.
2. Insert an A19 incandescent (100W maximum) or compact fluorescent (26W, 100W equivalent)
light bulb into the light socket.
3. Rotate the lens up to close.
NOTE: Do not use halogen, short neck, or specialty light bulbs as these may overheat the end panel or
light socket. Do not use LED bulbs as they may reduce the range or performance of your remote controls.
or or
STEP 7 Attach the emergency release rope and handle
To prevent possible SERIOUS INJURY or DEATH from a falling garage door:
lIf 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.
lNEVER use emergency release handle unless garage doorway is clear of persons and
obstructions.
lNEVER use handle to pull door open or closed. If rope knot becomesuntied, you could fall.
1. Insertone end of the emergency release rope through the handle. Make sure that“NOTICE” is
right side up. Tie a knot at least 1 inch (2.5 cm) from the end of the emergency release rope.
2. Insertthe other end ofthe emergencyrelease rope through the hole in the trolley release arm.
Mount the emergency release within reach, but at least 6 feet (1.83 m) above floor, avoiding
contact with vehicles to prevent accidental release and secure with a knot.
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.

16
Installation
STEP 8 Install the door bracket
Fiberglass, aluminum or lightweight steel garage doors WILL REQUIRE reinforcement BEFORE
installation of door bracket. Contactthe garage door manufacturer or installing dealer for opener
reinforcement instructions or reinforcement kit. Failure to reinforce the top section as required
according to the door manufacturer may void the door warranty.
A horizontal and vertical reinforcement is needed for
lightweight garage doors (fiberglass, aluminum, steel,
doors with glass panel, etc.) (not provided). A horizontal
reinforcement brace should be long enough to be secured
to two or three vertical supports. A vertical reinforcement
brace should cover the heightofthe top panel. Contactthe
garage door manufacturer or installing dealer for opener
reinforcement instructions or reinforcement kit.
NOTE: Many door reinforcement kits provide for direct attachment of the clevis pin and door arm. In this
case you will not need the door bracket; proceed to the next step.
Self-Threading Screw
1/4"-14x5/8"
HARDWARE
OPTION A SECTIONAL DOORS
1. Center the door bracket on the previouslymarked vertical centerline used for the header bracket
installation. Note correct UP placement, as stamped inside the bracket.
2. Position the top edge of the bracket 2"-4" (5-10 cm) below the top edge ofthe door,OR directly
below any structural supportacrossthe top of the door.
3. Mark, drill holes and install as follows, depending on your door’s construction.
Metal or light weight doors using a vertical angle iron brace between the door panel support and
the door bracket:
lDrill 3/16" fastening holes.Secure the door bracketusing the two 1/4"-14x5/8" self threading
screws. (Figure 1)
lAlternately, use two 5/16"-18x2" bolts, lock washers and nuts (not provided). (Figure 2)
Metal, insulated or light weight factory reinforced doors:
lDrill 3/16" fastening holes. Secure the door bracket using the self-threading screws. (Figure 3)
Wood Doors:
lUse top and bottom or side to side door bracket holes.Drill 5/16" holesthrough the door and
secure bracket with 5/16"-18x2" carriage bolts, lock washers and nuts (not provided). (Figure 4)
NOTE: The 1/4"-14x5/8" self-threading screws are not intended for use on wood doors.
FIGURE 1
FIGURE 3 FIGURE 4
FIGURE 2
Vertical
Reinforcement
Vertical Centerline
of Garage Door
UP
Door Bracket
Vertical Reinforcement
Vertical Centerline
of Garage Door
Hardware
(not provided)
Door Bracket
UP
Vertical
Centerline
of Garage
Door
UP
Vertical Centerline of
Garage Door
Hardware
(not provided)
UP
Inside Edge of Door or
Reinforcement Board
Self-Threading Screw
1/4"-14x5/8"
Self-Threading
Screw
1/4"-14x5/8"

17
Installation
STEP 8 Install the door bracket (continued)
OPTION B ONE-PIECE DOORS
1. Center the door bracket on the top of the door, in line with the header bracket as shown.
2. Mark either the leftand right,or the top and bottom holes.
Metal Doors:
lDrill 3/16" pilotholes and fasten the bracket with the self-threading screwsprovided.
Wood Doors:
lDrill 5/16" holesand use 5/16"-18x2" carriage bolts,lock washers and nuts(not provided) or
5/16"x1-1/2" lag screws (not provided) depending on your installation needs.
NOTE: The door bracket may be installed on the top edge of the door if required for your installation.
(Refer to the dotted line optional placement drawing.)
For a door with no exposed
framing, or for the optional
installation, use lag screws
5/16"x1-1/2" (not provided)
to fasten the door bracket.
Vertical
Centerline
of Garage
Door
Optional
Placement
of Door
Bracket
Door Bracket
Header Bracket
Header Wall
2x4 Support (Finished Ceiling)
Door
Bracket
Top of Door
(Inside Garage)
Top Edge of
Door
Optional
Placement
Optional
Placement
Top Edge
of Door
Top of Door
(Inside Garage)
Door
Bracket
Hardware
(not provided)
Hardware
(not provided)
Metal Door Wood Door
Self-Threading
Screw 1/4"-14x5/8"

18
Installation
STEP 9 Connect the door arm to the trolley
Installation will vary according to the garage door type. Follow the instructions which apply to your door.
OPTION A SECTIONAL DOORS
IMPORTANT: The groove on the straightdoor arm MUST face away from the curved door arm.
1. Close the door. Disconnectthe trolley by pulling the emergencyrelease handle.
2. Attach the straight door arm to the outer trolleyusing the clevispin. Secure with the ring fastener.
3. Attach the curved door arm to the door bracketusing the clevispin. Secure with the ring fastener.
4. Bring arm sections together. Find two pairs of holes that line up and join sections. Select holes as
far apart as possible to increase door arm rigidity and attach using the bolts, nuts, and lock
washers.
5. Pull the emergencyrelease handle toward the garage door opener until the trolleyrelease arm
is horizontal. The trolley will re-engage automatically when the garage door opener is activated.
NOTE: Ifthe holes in the curved door arm and the straight door arm do not align, reverse the straight
door arm, select two holes (as far apart as possible) and attach using bolts , nuts, and lock washers . If the
straight door arm is hanging down too far, you may cut 6 inches (15 cm) from the solid end.
HARDWARE
Hex Bolt 5/16"-18x7/8"
Nut 5/16"-18
Lock Washer 5/16" -18
Clevis Pin 5/16"x1"Clevis Pin 5/16"x1-1/4"
Ring Fastener
Straight
Door Arm Curved
Door
Arm
(Groove
facing
out)
CORRECT
Straight
Door
Arm Curved
Door
Arm
INCORRECT
Lock Washer
5/16" -18
Nut
5/16"-18
Hex Bolt 5/16"-18x7/8"
Clevis Pin 5/16"x1-1/4"
Ring Fastener Clevis Pin
5/16"x1"

19
Installation
STEP 9 Connect the door arm to the trolley (continued)
OPTION B ONE-PIECE DOORS
IMPORTANT: The groove on the straightdoor arm MUST face away from the curved door arm.
1. Close the door. Disconnectthe trolley by pulling the emergencyrelease handle.
2. Fasten the straight door arm and the curved door arm together to the longest possible length
(with a 2 or 3 hole overlap) using the bolts,nuts,and lockwashers.
3. Attach the straight door arm to the door bracket using the clevis pin. Secure with the ring fastener.
4. Attach the curved door arm to the trolleyusing the clevispin. Secure with the ring fastener.
5. Pull the emergencyrelease handle toward the garage door opener until the trolleyrelease arm
is horizontal.
HARDWARE
Hex Bolt 5/16"-18x7/8"
Nut 5/16"-18
Lock Washer 5/16" -18
Clevis Pin 5/16"x1"Clevis Pin 5/16"x1-1/4"
Ring Fastener
One-Piece Door without Track
One-Piece Door with Track
Straight
Door Arm
Curved
Door
Arm
(Groove
facing out)
CORRECT INCORRECT
Straight
Door
Arm
Curved
Door
Arm
Ring
Fastener Ring Fastener
Nut 5/16"-18
Nut 5/16"-18
Ring
Fastener
Ring Fastener
Lock Washer 5/16" -18
Lock Washer 5/16" -18
Clevis Pin 5/16"x1-1/4"
Clevis Pin
5/16"x1-1/4"
Hex Bolt 5/16"-18x7/8"
Hex Bolt 5/16"-18x7/8"
Clevis Pin
5/16"x1"
Clevis Pin
5/16"x1"