Chamberlain 1120E-1/2HP User manual

CONTENTS PAGE
Safety Rules ................................................................2
Features of Your Opener.............................................3
Specifications ..............................................................3
You'll Need Tools.........................................................3
Completed Installation Illustration ..........................4 - 5
Carton Inventory..........................................................6
Hardware Inventory .....................................................7
Assembly Section.................................................8 - 12
Installation Section .............................................13 - 22
Travel Limit Adjustments ...........................................23
Force Adjustments.....................................................24
CONTENTS PAGE
Test the Safety Reverse System.................................25
The Protector System™..............................................26
Receiver & Remote Control Programming..................26
Operation of Your Opener...........................................27
Accessories.................................................................27
Care & Maintenance of Your Opener..........................28
Having a Problem? ..............................................29 - 30
Repair Parts, Opener Assembly..................................31
How To Order Repair Parts.........................................32
Warranty......................................................................32
Garage Door Opener
Owner’s Manual
FOR RESIDENTIAL USE ONLY
The Chamberlain Group, Inc.
845 Larch Avenue
Elmhurst, Illinois 60126-1196
© ©
Model 1120E – 1/2HP Model 1110E – 1/2HP
■Please read this manual and the enclosed safety materials carefully!
■Fasten the manual near the garage door after installation.
■Periodic checks of the opener are required to ensure safe operation.
■The model number label is located on the front panel of your opener.

THESE SAFETY ALERT SYMBOLS MEAN CAUTION - PERSONAL SAFETY, PROPERTY DAMAGE OR
DANGER FROM ELECTRIC SHOCK. READ THESE INSTRUCTIONS CAREFULLY.
THIS GARAGE DOOR OPENER IS DESIGNED AND TESTED TO OFFER SAFE SERVICE PROVIDED IT IS
INSTALLED, OPERATED, MAINTAINED AND TESTED IN STRICT ACCORDANCE WITH THE SAFETY
INSTRUCTIONS CONTAINED IN THIS MANUAL.
FAILURE TO COMPLY WITH THE FOLLOWING INSTRUCTIONS MAY RESULT IN SERIOUS PERSONAL
INJURY OR PROPERTY DAMAGE.
CAUTION: IF YOUR GARAGE HAS NO SERVICE ENTRANCE DOOR, INSTALL MODEL 1702E EMERGENCY RELEASE
KEYLOCK. THIS ACCESSORY ALLOWS MANUAL OPERATION OF GARAGE DOOR FROM OUTSIDE IN CASE OF
POWER FAILURE.
KEEP GARAGE DOOR BALANCED. Sticking
or binding doors must be repaired. Garage
doors, door springs, cables, pulleys,
brackets and their hardware are under
extreme tension and can cause serious
personal injury. DO NOT ATTEMPT TO
LOOSEN, MOVE OR ADJUST THEM. Call for
professional garage door service.
DISCONNECT ELECTRIC POWER TO
GARAGE DOOR OPENER BEFORE MAKING
REPAIRS OR REMOVING COVERS.
To avoid serious personal injury from
entanglement, REMOVE ALL THE ROPES
CONNECTED TO GARAGE DOOR before
installing the garage door opener.
DO NOT WEAR RINGS, WATCHES OR
LOOSE CLOTHING while installing or
servicing a garage door opener.
DISENGAGE ALL EXISTING GARAGE DOOR
LOCKS to avoid damage to garage door.
Installation and wiring must be in
compliance with your local building and
electrical codes. CONNECT THE POWER
CORD ONLY TO A PROPERLY GROUNDED
OUTLET.
Fasten a CAUTION LABEL to the wall
adjacent to the Door Control and the other
to the garage door, as reminders of safe
operating procedures.
THE SAFETY REVERSE SYSTEM TEST IS
VERY IMPORTANT (page 25). Your garage
door
MUST reverse on contact with a 25mm
obstacle placed on the floor. Failure to test
and properly adjust the opener may result
in severe injury or death. REPEAT THE
TEST ONCE A MONTH AND ADJUST AS
NEEDED.
LIGHTWEIGHT DOORS OF FIBERGLASS,
ALUMINUM OR STEEL MUST BE SUB-
STANTIALLY REINFORCED TO AVOID
DOOR DAMAGE. (See page 20.) The best
solution is to check with your garage door
manufacturer for an opener installation
reinforcement kit.
Install door control (or any additional push
buttons) IN A LOCATION WHERE GARAGE
DOOR IS VISIBLE, BUT OUT OF THE
REACH OF CHILDREN. DO NOT ALLOW
CHILDREN TO OPERATE PUSH BUTTON(S)
OR REMOTE CONTROL TRANSMITTER.
Serious personal injury from a closing
garage door may result from misuse of the
opener.
Activate opener only when the door is in
full view, free of obstructions and opener is
properly adjusted. NO ONE SHOULD
ENTER OR LEAVE THE GARAGE WHILE
DOOR IS IN MOTION. DO NOT ALLOW
CHILDREN TO PLAY NEAR THE DOOR.
Use the manual release ONLY to disengage
the trolley and, if possible, ONLY when the
door is closed. DO NOT USE THE RED
HANDLE TO PULL DOOR OPEN OR
CLOSED.
2
Start By Reading These Important Safety Rules
DO NOT USE THE FORCE ADJUSTMENTS
TO COMPENSATE FOR A BINDING OR
STICKING GARAGE DOOR. Excessive
force will interfere with the proper
operation of the safety reverse system or
damage the garage door (page 24).

Before you begin, please check the contents of the cartons. Illustrations of parts and hardware are
shown on pages 6 and 7. Separate the hardware for assembly and installation as shown.
SPECIFICATIONS
Pliers
Wire Cutters
Claw Hammer
Hack Saw
Screwdriver Adjustable End Wrench
Socket Wrench
Electric Drill
Tape Measure
2
1
Stepladder
Carpenter’s
Level
Pencil
5 mm & 8mm
Drill Bits
YOU'LL NEED TOOLS
During assembly and installation of your opener, the instructions will call for the use of various hand
tools shown below.
FEATURES OF YOUR OPENER
1. Opener Lights: Turn on and off automatically
with 4-1/2 minute illumination for your safety and
convenience. Provide constant light when Light
feature is activated.
2. Manual Disconnect: Pull cord disconnect
permits manual door operation in case of an
emergency or power failure.
3. Automatic Reconnect: Trolley halves reconnect
for automatic operation when opener is activated
after a manual disconnect.
4. Safety System: Independent up and down force
adjustment. The door REVERSES automatically
when obstructed in DOWN direction. The door
STOPS when obstructed in UP direction.
5. Motor: Permanently lubricated with automatic
reset.
6. Easy Limit Adjustment: Limits of door opening
and closing adjusted by turning screws without
removing opener cover.
MOTOR
Type ............................Permanent split capacitor
Speed..........................1500 rpm
Volts ............................120 Volts AC - 60 Hz. Only
Current ........................6 amperes
DRIVE MECHANISM
Gears ..........................16:1 worm gear reduction
Drive............................Chain with one-piece trolley on
steel T-rail
Length of travel ...........Adjustable to 2.29m.
Travel rate...................15-20cm per second
Lamp ...........................On when door starts to travel, off
4-1/2 minutes after stop. Remain lit
when Light feature is activated.
Door linkage................Adjustable door arm. Pull cord
trolley release.
SAFETY
Personal.......................Push button and automatic reversal
in down direction. Push button and
automatic stop in UP direction
Electronic.....................Independent UP and DOWN force
adjustment screws
Electrical......................Motor overload protector & low
voltage push button wiring
Limit device..................Circuit actuated by limit nut
Limit adjustment ..........Screwdriver adjustment on side
panel
Start circuit...................Low voltage push button or radio
control
DIMENSIONS
Length (overall)............3.15m
Headroom required .....5cm
Hanging weight............14.5kg
3

BEFORE YOU BEGIN, PLEASE TAKE SOME TIME TO CAREFULLY EXAMINE THE ILLUSTRATIONS OF
TYPICAL GARAGE DOOR OPENER INSTALLATIONS. Some installation instructions vary.
Do you have a finished ceiling in your garage? If so, you will need a support bracket and additional fastening
hardware. Refer to Installation Step 5, Page 17 for specific requirements.
Do you have a lightweight or metal door (or does it have glass panels)? If so, horizontal and vertical
reinforcement is required. Refer to Installation Step 10, Page 20.
If possible, install the door opener 2.1m or more above floor with the manual release handle mounted
1.8m above the floor.
4
Chain
Horizontal & Vertical
Support - Not Supplied
(Needed Only for
Lightweight Garage
Door Installation)
SECTIONAL
DOOR INSTALLATION
Chain
Pulley Bracket
Header
Bracket
Trolley
Straight
Door
Arm
Manual
Trolley
Release
Door Bracket
& Plate
Garage
Door
Curve
Door
Arm
Chain
Header
Support Bracket
and Fastening
Hardware
(Not Supplied)
Support Bracket
and Fastening
Hardware
(Not Supplied)
ONE-PIECE DOOR INSTALLATION
Chain Pulley
Bracket
Header Bracket Trolley
Straight
Door
Arm Manual
Trolley
Release
Door Bracket
& Plate
Garage
Door
Curve
Door
Arm
Garage
Door
Spring
Header
Horizontal
Garage Door
Reinforcement
(If needed)
Vertical Garage Door
Reinforcement (if needed)
Slack in chain tension
is normal when
garage door is closed
Slack in chain tension
is normal when
garage door is closed

Safety
Reversing
Sensor
Safety
Reversing
Sensor
SLIDING GATE INSTALLATION
5
Header Wall
Safety
Reversing
Sensor
Safety
Reversing
Sensor
SWINGING GATE INSTALLATION

Multi-Function
Door Control Panel
41A4202A
3 Volt Battery
10A20
Hanging Brackets
12B350
Straight Door
Arm Section
178B34
Curved Door Arm
Section 178B35
Door Bracket
12B374
Door Bracket Plate
12B380
Remote Contol
Transmitter Visor Clip
29B137
INSTALLATION PARTS
2 Strand Bell Wire
217A238
Manual Release Rope
& Handle Assembly
41A2828
NOTICE
Single-Function Remote Control
Transmitter Case, Cover & Screw
(circuit board not included)
41A3984-7
Header Bracket plus
Clevis and Fastener
41A4353
UP
CEILING MOUNT ONLY
LIGHT
LOCK
Model 1120E Only
Lighted Door
Control Button
41A4166
Model 1110E Only
Chain Pulley
Bracket
41A2780
RAIL ASSEMBLY PARTS
Trolley
41A3489
Chain
41A3611-1
T-rail
Center Section
1B3117
TO GARAGE DOOR
T-rail
End Section
(each)
183B110
Master Link Kit
4A1008
Safety Labels
and
Literature
Light Lens
108D34
Model 1120E (2)
Model 1110E (1)
Carton Inventory
Your garage door opener is packaged with all parts illustrated below. If anything is missing, carefully check the
packing material. Parts may be “stuck” in the foam. Hardware for assembly and installation is shown on page 7.
6

Hex Screw
5/16"-18x7/8" (4)
Screw
6ABx1-1/4" (2)
Lock Washer
5/16" (2)
Nut
5/16"-18 (6)
Clevis Pin
5/16"x2-3/4" (1)
NOTICE
Handle Insulated
Staples (10)
Assembly Hardware #41A3534
Installation Hardware #41A3535
Dry Wall Anchors (2)
Clevis Pin
5/16"x1" (2)
Rope
Lock Nut
1/4"-20x7/16" (4)
Nut
5/16"-18 (2)
Washered Screw
5/16"-18x1/2" (2)
(mounted in opener)
Carriage Bolt
5/16"-18x2-1/2" (2)
Carriage Bolt
1/4"-20x1/2" (4)
Hex Screw
5/16"-18x7/8" (2) Master Link (2)
Ring Fastener (3)
Trolley
Threaded Shaft (1)
Lock Washer
5/16" (6)
Lag Screw
5/16"-9x1-5/8" (4)
Hardware Inventory
Separate all hardware from the packages in the rail carton and the opener carton, as shown below, for the
assembly and installation procedures.
7

8
ASSEMBLY STEP 1
Assemble the T-rail and
Attach Chain Pulley Bracket
• Place the 3 T-rail sections on a flat surface for
assembly. The end sections are identical. The
center section must be positioned with the
braces against the end sections as shown.
Make sure the "directional arrow" on the center
section is pointing toward the front (to door).
Study the illustration CAREFULLY.
• Bolt rail sections together with the hardware
illustrated and from the direction indicated. (When
assembled, T-rail has a front-to-back position as
shown.)
If T-rail is not assembled exactly as shown,
trolley will not travel smoothly along length
of rail or it will hit against nuts.
T-rail
(Center Section)
1/4'' Lock Nut
T-RAIL FRONT
(TO DOOR)
Chain pulley bracket
attaches to FRONT
END of T-rail
T-rail
(End Section)
T-RAIL BACK
(TO OPENER)
T-rail
(End Section)
Carriage Bolt
1/4"-20x1/2"
Brace
Brace
Square Carriage
Bolt Holes
TO GARAGE DOOR
Hex Screws
5/16"-18x7/8"
Rail Bracket & T-rail Must Be Aligned
Lock Washer
5/16" Nut
5/16"
Chain Pulley
Bracket
Make sure bolt
necks are seated
in the square
holes and rails are
aligned before
you tighten lock
nuts. (See right
and wrong views).
Improper
assembly can
cause jerky trolley
operation, noise
and/or nuisance
door reversals.
Right
Wrong
Right Wrong
When tightening the
screws, be sure to
keep bracket parallel
to the rail. Otherwise,
the rail may bow when
opener is operated.
Lock Nut
1/4" - 20 x 7/16" Carriage Bolts
1/4" - 20 x 1/2"
Hex Screw
5/16" - 18 x 7/8" Nut
5/16" - 18 Lock washer
5/16"
Hardware Shown Actual Size
• Position the chain pulley bracket on the front end
of the T-rail as shown. Fasten securely with the
hardware provided.
11mm Socket Wrench
13mm Socket Wrench
To avoid installation difficulties, do not run the garage door opener until instructed to do so.
Assembly Section: Pages 8 – 12

Trolley
Threaded
Shaft
Lock Washer
5/16"
Outer Nut
5/16"
Inner Nut
5/16"
Trolley
Temporary Stop
Screwdriver
TO GARAGE DOOR
9
ASSEMBLY STEP 2
Install Trolley
• Attach trolley threaded shaft to trolley with lock
washer and nuts as shown.
• As a temporary stopo, insert a screwdriver into hole
in front end of the T-rail.
• Slide trolley assembly along the rail to the
screwdriver stop.
If trolley hits against nut on the T-rail, the bolts
and nuts were attached from the wrong side and
must be repositioned. Review Step 1.
ASSEMBLY STEP 3
Fasten T-Rail to Opener
• Place the opener on packing material to protect the
cover. For convenience, place a support under the
chain pulley bracket.
• Remove the (2) 5/16"-18x1/2" washered screws
mounted in the top of the opener.
• Align holes in the back end of T-rail with holes in
opener.
• Fasten the rail with the (2) washered screws
previously removed. Tighten securely.
Use only these screws! Use of any other screws
will cause serious damage to door opener.
• Insert a 5/16"-18x7/8" hex screw into the cover
protection bolt hole in the T-rail as shown. Tighten
securely with a 5/16" lock washer and nut.
NOTE: This screw prevents trolley over-travel. Keep
a 25mm minimum between the trolley and this
screw when adjusting travel limits (see page 23).
Model 1120E Only:
Attach chain spreader with
#8x1" hex screws and washers as shown.
To fasten rail, use only those screws
mounted in the top of the opener. Any
other screws will cause serious
damage to the opener.
USE ONLY THIS
TYPE AND SIZE
SCREW
Washered Screws
5/16"-18x1/2"
Cover
Protection
Bolt Hole
Hex Screw
5/16"-18x7/8"
Nut
5/16"-18
Lock Washer
5/16"
Chain
Spreader
#8x1"
Hex Screws
Washers
MODEL 1120E ONLY
13mm Socket Wrench
13mm Socket Wrench
Lock Washer
5/16" Nut
5/16"-18
Hardware Shown Actual Size
Nut
5/16"-18 Lock Washer
5/16"
Hex Screw
5/16"-18x7/8"
Hardware Shown Actual Size

Master
Link Bar
Flat End
of Trolley
Trolley
Pin
Pin Notch
Flat End
of
Threaded
Shaft
Master Link
Clip-On Spring
Master
Link Cap
Install Chain
In This Direction
Chain
Pulley
Bracket
Opener
Sprocket
Install Chain in this Direction
ASSEMBLY STEP 4
MODEL 1110E ONLY
Install the Chain &
Attach Sprocket Cover
DO NOT REMOVE CHAIN FROM CARTON.
• Dispense a few inches of chain from carton and
fasten to trolley with a master link from the
hardware bag. See master link procedure, Figure 1.
Caution: Keep the chain taut during installation
to help prevent kinking.
• With trolley against screwdriver, dispense chain
around pulley. Proceed back around opener
sprocket as shown in Figure 2. The sprocket teeth
must engage the chain.
• Continue dispensing chain forward to the trolley
Figure 3. Make sure the entire length of the chain
is lying on the rail.
• Use the second master link to connect chain to
flat end of threaded shaft. Check to make sure
chain is not twisted.
• Remove the screwdriver.
REPRESENTATIVE DOOR STYLES ARE SHOWN
ON PAGE 13.
10
Sprocket
Cover
Mounting
Plate
Front Tab Slot
Back Tab Slot
Top of Opener
To attach sprocket cover to opener:
• Insert back tab in opener slot. Squeeze the cover
slightly and insert the front tab into the slot on the
mounting plate.
Master Link Procedure
Push pins of master link bar
through chain link and hole in
front end of trolley. Push cap over
pins and past notches. Slide clip-
on spring over cap and onto pin
notches until both pins are
securely locked.
Figure 1
Figure 2
Figure 3
Serious injury can result if fingers
become entangled in moving opener
sprocket. Attach sprocket cover securely.
Never operate opener while your hand is
near the opener sprocket.