Chamberlain HD520EV 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 ............ 35

Maintenance.............................. 36

Troubleshooting...................... 37-38

Accessories............................... 39

Warranty .................................. 40

Repair Parts .......................... 41-42

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 enable the Timer-to-Close feature if you are installing the garage door

opener on a one-piece door. The Timer-to-Close is to be used ONLY with sectional

doors.

Serial Number:

Date of Purchase:

Model HD520EV

FOR RESIDENTIAL USE ONLY

Write down the following information

for future reference:

The Chamberlain Group, Inc.

845 Larch Avenue

Elmhurst, Illinois 60126-1196

Safety Symbol and Signal Word Review

This garage door opener has been designed and tested to offer safe service provided it isinstalled,

operated,maintained and tested in strictaccordance with the instructions and warnings contained in this

manual.

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 ifyou do notcomply with the warnings that accompanythem.The

hazard may come from something mechanical or from electric shock. Read the warningscarefully.

Mechanical

Electrical

When you see this Signal Word on the following pages,it will alert you to the possibilityof damage to

your garage door and/or the garage door opener ifyou do notcomplywith the cautionarystatementsthat

accompany it. Read them carefully.

Check the Door

To prevent possible SERIOUS INJURY or DEATH:

lALWAYS 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.

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 locks and remove ALL ropes connected to garage door BEFORE installation and

operating garage door opener to avoid entanglement.

To preventdamage to garage door and opener:

lALWAYS disable locks BEFORE installing and operating the opener.

lONLY operate garage door opener at120 V,60 Hzto avoid malfunction and damage.

Before you begin:

1. Disable locks and remove any ropesconnected 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 checkfor 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 ofthe door.Any gap between the floor

and the bottomof the door mustnotexceed 1/4 inch (6 mm).

Otherwise, the safety reversal system may not work properly.

5. The opener should be installed above the center ofthe door. If there

is a torsion spring or center bearing plate in the wayof the 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

Preparation

Additional Items You May Need:

Surveyyour garage area to see ifyou will need any of the following items:

n(2) 2X4 PIECES OF WOOD

Maybe 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 reversing sensors.

nSUPPORT BRACKET AND FASTENING HARDWARE

Must be 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 blocksmay be needed to

install the safety reversing sensor.

nFASTENING HARDWARE

Alternate floor mounting of the safety reversing sensor will require hardware not provided.

nOUTSIDE QUICK RELEASE (MODEL 7702CB)

Required for a garage with NO accessdoor.

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

7/32

5/16

3/8 7/16

1/2

Preparation

Carton Inventory

Your garage door opener ispackaged 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 accessoriesmay be included with your garage door opener. Instructions for these

accessorieswill be attached to the accessory and are not included in this manual.Ifanything ismissing,

carefully checkthe packing material. Hardware for assembly and installation is shown on the nextpage.

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. Door control

O. Remote control

P. The Protector System®

Safety reversing sensorswith 2 conductor white and white/black wire attached: Sending Sensor

(1), Receiving Sensor (1), and Safety Sensor Brackets (2)

NOT SHOWN

White and red/white wire

Owner's manual

Preparation

Hardware Inventory

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 HARDWARE INSTALLATION HARDWARE

Screw 6ABx1" (2)

Drywall Anchors (2)

Screw 6-32x1" (2)

DOOR CONTROL HARDWARE

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

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 door opener until instructed to do so.

The front rail has a cut out “window” at the door end. The front and back rail both have rail tabs. These

rail tabs MUST be on top of the rail when assembled.

1. Remove the straight door arm and hanging bracket packaged inside the front rail and setaside

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.

Tabsalong the side will lockinto 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 front end ofthe rail.

4. As a temporary stop,inserta screwdriver into the hole 10" (25 cm) from the front end ofthe rail,

as shown.

5. Check to be sure there are 4 plasticwear pads inside the inner trolley.Ifthey 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.

7. Slide the rail onto the “U” bracket, until itreaches 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

Rail

Tab

Trolley

Window

Cut-Out

Idler

Pulley

Hole

Assembly

STEP 2 Fasten the rail to the motor unit

To avoid SERIOUS damage to garage door opener, use ONLY those bolts/fastenersmounted in the

top of the opener.

1. Insert a 1/4"-20x1-3/4" boltinto the cover protection bolt hole on the backend of the rail as

shown.Tighten securely with a 1/4"-20 locknut. DO NOT overtighten.

2. Remove the boltand nut from the top ofthe motor unit.

3. Use the carton to supportthe frontend of the rail.

4. Place the “U” bracket,flat side down onto the motor unit and align the bracketholes with the bolt

holes.

5. Fasten the “U” bracket with the previously removed bolt and locknut; DO NOT use any power

tools.The use ofpower toolsmaypermanentlydamage the garage door opener.

HARDWARE

Bolt 1/4"-20x1-3/4"

Lock Nut 1/4"-20

(Mounted in the

Bolt and Nut

garage door opener)

“U” Bracket

Bolt

Cover Protection

Bolt Hole

Bolt 1/4"-20x1-3/4"

Lock Nut 1/4"-20

Lock Nut

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

approximately12" (30 cm) ofbelt through the window.Keep the ribbed side toward the rail, and

allowitto hang until AssemblyStep 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 into the window asshown.

4. Insert the idler bolt from the top through the rail and pulley.Tighten with a 3/8" lockwasher and

nut underneath the rail until the lock washer is compressed.

5. Rotate the pulleyto be sure itspins 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).

HARDWARE

Bolt Nut 3/8"

Lock Washer 3/8"

Screwdriver

Rail

Trolley Connector

Bolt

Lock Washer 3/8"

Nut 3/8"

Rail

Tab

CORRECT

INCORRECT

Rail Tab

Idler Pulley

Grease Inside Pulley

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 trolley againstthe screwdriver, dispense the remainder of the belt along the rail

lengthtoward the motor unit and around the sprocket (Figure 2).The sprocket teeth mustengage

the belt.

4. Check to make sure the belt is nottwisted.Connect the trolley threaded 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 pinsand pastpin notches.

lSlide clip-on spring over cap and onto pin notches until both pinsare securely locked in

place.

5. Remove the spring trolley nutfrom the threaded shaft.

6. Insert the trolley threaded shaftthrough the hole in the trolley.

HARDWARE

Master

Link

Threaded Shaft with Spring Trolley Nut

Sprocket

Figure 3

Front Rail

Section

(TO DOOR)

Idler

Pulley

Threaded Shaft

Master

Link

Figure 2

Trolley Connector

Figure 1

Retaining

Slot

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. Insert a flathead screwdriver tip into one ofthe nut ring slotsand brace itfirmly againstthe trolley.

3. Tighten the spring trolley nutwith an adjustable wrench or a 7/16" open end wrench about a

quarter turn until the spring releases and snaps the nut ring againstthe trolley.This setsthe

spring to optimum belt tension.

Nut Ring

BEFORE

(2.5

cm)

Nut Ring

AFTER

1-1/4"

(3.18 cm)

Nut Ring Slot

Spring Trolley

STEP 6 Install the sprocket cover

To avoid possible SERIOUS INJURY to finger from moving garage door opener:

lALWAYS keep hand clear of sprocket while operating opener.

lSecurely attach sprocket cover BEFORE operating.

1. Position the sprocket cover over the sprocketasshown 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

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