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ALL MODELS IN ARE BOLD ARE DELUXE (2 LIGHTS)
550
450
350
240
150
140
Owners Manual
Garage Door Opener
MODEL
550-9
450-9
350-9
240-9
150-9
140-9
250-9TV
140-9TV
THE CHAMBERLAIN GROUP, INC.
A Unit of Duchossois Industries, Inc.
845 Larch Ave., Elmhurst, Ill. 60126
NUMBERS
550-6
450-6
350-6
240-6
150-6
140-6
140-6TV
550-9TV
500-9TV
450GM
140GM
550TV
500TV
250TV
140TV
550-6TV
500-6TV
250-6TV
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Table of Contents
Related Manuals for Chamberlain 240
Summarization of Contents
Features of Your Opener
Opener Lights
Controls automatic illumination for safety and convenience.
Safety System
Independent force adjustment and automatic reversal/stop for door movement.
Emergency Disconnect
Allows manual door operation via a pull cord.
Automatic Reconnect
Trolley reconnects automatically after emergency disconnect.
Motor Power
Features a permanently lubricated motor with automatic reset.
Digital Radio Controls
Codes can be easily changed by the owner.
Easy Limit Adjustment
Adjusts door opening/closing limits via screws without removing cover.
Lock Switch
Prevents transmitter operation, allowing only upward movement from wall control.
Specifications
Motor Specifications
Details motor type, speed, voltage, and current ratings.
Drive Mechanism Details
Describes gears, drive type, travel limits, and lamp operation.
Safety Specifications
Covers push button controls, force adjustments, and wiring.
Dimensions Overview
Lists overall length, headroom, and hanging weight specifications.
Step 1: Adjust UP and DOWN Limits
Adjusting UP Travel
Increase UP travel by turning the UP LIMIT adjustment screw clockwise (2" per turn).
Adjusting DOWN Travel
Increase DOWN travel by turning the DOWN LIMIT adjustment screw counterclockwise (2" per turn).
Fixing Reverse in Closed Position
Decrease DOWN travel by turning the DOWN LIMIT adjustment screw clockwise (2" per turn).
Addressing Closing Reversals
Check for door binding; if not binding, adjust CLOSE FORCE.
Step 2: Adjust Force
Testing Down (Close) Force
Grasp door bottom halfway through travel; door should reverse. Adjust DOWN FORCE if needed.
Adjusting UP (Open) Force
Increase UP FORCE clockwise (10 deg. adjustments) if door doesn't open at least 5 feet.
Adjusting DOWN (Close) Force
Increase DOWN FORCE clockwise if door reverses during close cycle.
Step 3: Test Safety Reverse System
Safety Reverse System Test
Ensure door reverses on a 1-inch floor obstacle for safe operation.
Adjusting DOWN Limit for Obstruction
Increase DOWN limit counterclockwise if door stops on obstruction.
Final Travel Cycle Check
Verify door does not reverse in the closed position after testing.
Step 4: Install the Protector System (Optional)
Protector System Functionality
Adds safety with an invisible beam to prevent entrapment.
Radio Controls
Match/Change Code in Transmitter
Procedure for setting code switches in transmitters to match.
Set Receiver to Match Transmitter Code
Steps to synchronize receiver with transmitter using the Smart Button.
Repair Parts: Rail Assembly
Rail Assembly Parts List
Identifies components for the rail assembly, including part numbers.
Repair Parts: Installation
Installation Parts List
Lists components for initial installation, including wall controls and hardware.
Repair Parts: Chassis Assembly
Chassis Assembly Parts List
Details internal chassis components, motor, and logic boards.
Chamberlain Service and Support
Service Information
Provides contact number for installation and service information.
How to Order Repair Parts
Instructions on ordering replacement parts, including required information.
Warranty Information
One-Year Limited Warranty
Covers defects in materials/workmanship for twelve months from purchase.
Limited Warranty on Motor
Specific motor warranty periods for different models (60 or 36 months).
Warranty Exclusions
Details damages and conditions not covered by the warranty.
Accessories for Your Garage Door Opener
Remote Controls
Lists available remote models and their functions.
Wall Control Panel
Details the wired wall control panel accessory.
Keyless Entry System
Describes the wired keyless entry accessory.
Outside Keyswitch
Information on the outside keyswitch accessory.
Quick Release Lock
Describes the lock for manual door operation during power failure.
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