Chamberlain 1120E-1/2HP User Manual

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

Chamberlain 1120E-1/2HP Specifications

General

Brand	Chamberlain
Model	1120E-1/2HP
Category	Garage Door Opener
Language	English