Chamberlain HD920EV User manual

CONTENTS
Preparation . . . . . . . . . . . . . . . .1-4
Assembly . . . . . . . . . . . . . . . . .5-9
Installation . . . . . . . . . . . . . . 10-19
Install the Door Control. . . . . . 20-21
Install the Protector System®. . 22-25
Power. . . . . . . . . . . . . . . . . . 26-28
Adjustments . . . . . . . . . . . . . 29-31
Battery Backup. . . . . . . . . . . . 32-33
Operation . . . . . . . . . . . . . . . . . 34
Features . . . . . . . . . . . . . . . . . . 35
Door Control . . . . . . . . . . . . . 36-38
Remote Control . . . . . . . . . . . 39-40
To Erase the Memory . . . . . . . . . 40
To Open the Door Manually . . . . . 40
Maintenance . . . . . . . . . . . . . . . 41
Troubleshooting. . . . . . . . . . . 42-43
Accessories. . . . . . . . . . . . . . . . 44
Warranty. . . . . . . . . . . . . . . . . . 45
Repair Parts . . . . . . . . . . . . . 46-47
Belt Drive Battery Backup
Garage Door Opener
The Chamberlain Group, Inc.
845 Larch Avenue
Elmhurst, Illinois 60126-1196
■ 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.
www.chamberlain.com
Model Number:
Serial Number:
Date of Purchase:
Models
• HD920EV
• HD930EV
• LW5000EV
• WD962KEV
• WD962KPEV
• WD962MLEV
• 349544
FOR RESIDENTIAL USE ONLY Write down the following information for
future reference:
.
.

1
Safety Symbol and Signal Word Review
This garage door opener has been designed and tested to offer safe service provided itis installed,
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 if you do notcomply with the warnings that accompanythem. 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,itwill alert you to the possibility ofdamage to
your garage door and/or the garage door opener ifyou do not complywith the cautionary statements that
accompany it. Read them carefully.
Check the Door
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locksand remove ALLropes connected to garage door BEFORE installation and
operating garage door opener to avoid entanglement.
To preventdamage to garage door and opener:
• ALWAYS disable locks BEFORE installing and operating the opener.
• ONLY operate garage door opener at120 V,60 Hz to avoid malfunction and damage.
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 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 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 ofthe door. Ifthere 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 leftor rightof the
door center.See page 12.
Torsion
Spring
Extension
Spring
OR
Preparation

2
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 41A5281) OR WOOD BLOCKS
Depending upon garage construction,extension bracketsor wood blocksmaybe 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
2
1
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 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 accessoriesmaybe included with your garage door opener. Instructions for these
accessorieswill be attached to the accessoryand are not included in this manual. Ifanything is missing,
carefully check the 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 (Motion-Detecting Control Panel or Smart Control Panel®)
O. Remote control
P. The Protector System®
Safety reversing sensors with 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
N
A
B
C
H
K
J
O
I
D
E
F
G
L
M
P
OR
Preparation

4
Hardware Inventory
Hex Screw
#8x3/8" (3)
(packed with the
sprocket cover)
Bolt
1/4"-20x1-3/4"
Lock Nut
1/4"-20
Bolt
Nut 3/8"
Lock Washer 3/8"
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)
Preparation

5
Assembly
STEP 1 Assemble the rail and trolley
To prevent INJURY from pinching, keep handsand fingersaway from the jointswhile 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 (see illustration). The hole above thiswindow is
larger on the top of the rail than on the bottom.A smaller hole 3-1/2" (8.9 cm) away isclose to the rail
edge. Rotate the backrail so ithas a similar hole close to the opposite edge, about 4-3/4" (12 cm) from
the far end.
1. Remove the straight door arm and hanging bracket packaged inside the front rail and set
aside for Installation Step 5 and 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 flatsurface as shown and slide the tapered ends into the larger
ones. Tabsalong the side will lock into place.
3. Place the motor unit on packing material to protect the cover, and restthe backend of the rail
on top. For convenience,put a support under the front end of the rail.
4. As a temporarystop, insert a screwdriver into the hole 10" (25 cm) from the front end of the rail,
as shown.
5. Check to be sure there are 4 plasticwear padsinside the inner trolley. Iftheybecame loose
during shipping, check all packing material. Snap them back into position as shown.
6. Slide the trolley assembly toward the screwdriver asshown.
7. Slide the rail onto the “U” bracket, until it reaches all the stops on the top and sides ofthe “U”
bracket.
To garage
door opener
(TO MOTOR UNIT)
Front Rail
Section
(TO DOOR)
“U” Bracket
Outer Trolley
Inner Trolley
Wear Pads
Rail
Tab
Trolley
Window
Cut-Out
SLIDE TO STOPS
ON TOP AND
SIDES OF
“U” BRACKET
Idler
Pulley
Hole

6
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 bolthole on the backend of the rail as
shown.Tighten securely with a 1/4"-20 locknut.Do NOT overtighten.
2. Remove the two bolts from the top of the motor unit.
3. Use the carton to supportthe front end of the rail.
4. Place the “U” bracket,flat side down onto the motor unit and align the bracketholeswith the
bolt holes.
5. Fasten the “U” bracket with the previouslyremoved bolts; DO NOTuse any power tools. The
use of power toolsmay permanentlydamage the garage door opener.
(Mounted in the
Bolts
garage door opener)
HARDWARE
Bolt 1/4"-20x1-3/4"
Lock Nut 1/4"-20
“U” Bracket
Bolts
Cover Protection
Bolt Hole
Bolt 1/4"-20x1-3/4"
Lock Nut 1/4"-20

7
Assembly
STEP 3 Install the idler pulley
1. Lay the belt beside the rail, asshown. Grasp the end with the hooked trolley connector and
passapproximately12" (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. Insert the idler boltfrom the top through the rail and pulley. Tighten with a 3/8" lock washer and
nut underneath the rail until the lock washer is compressed.
5. Rotate the pulleyto be sure it spins freely.
6. Locate the rail tab.The rail tab is between the idler bolt and the trolley in 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"
Screwdriver
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 must contact the
pulley.
2. Hook the trolley connector into the retaining slot on the trolley. (a)
3. With the trolley againstthe screwdriver, dispense the remainder of the belt along the rail
toward the motor unitaround the sprocket. The sprocket teeth mustengage the belt. (b)
4. Thread the inner nut and lockwasher onto the trolleythread shaft(c). Checkto make sure the
belt is not twisted.
5. Insert the trolley threaded shaft through the hole in the trolley.Be sure the beltis not
twisted. (c)
6. Loosely thread the outer nut onto the trolley threaded shaft.
7. Remove the screwdriver.
Trolley Connector
Retaining Slot
c.
Threaded
Shaft
Outer
Nut
Front Rail
Section
(TO DOOR)
Inner
Nut
Lock
Washer
b.
a.
Sprocket
Idler
Pulley

9
Assembly
STEP 5 Tighten the belt and install the sprocket cover
To avoid possible SERIOUS INJURY to finger from moving garage door opener:
• ALWAYS keep hand clear of sprocketwhile operating opener.
• Securely attach sprocket cover BEFORE operating.
1. Spin the inner nutand lock washer down the trolley threaded shaft, awayfrom the trolley
2. To tighten the belt, turn outer nut in the direction shown until the line on the spring retainer
plate is visible. Be sure the beltis not twisted,and the ribbed side faces the rail.
3. Tighten the inner nutto secure the adjustment.Thissets the spring to optimum belttension.
4. Position the sprocket cover over the sprocketas 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
INCORRECT
CORRECT
Line
Lock Washer
Inner Nut
Spring RetainerOuter Nut
Line