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General| Brand | Chamberlain |
|---|---|
| Model | 240 |
| Category | Garage Door Opener |
| Language | English |
Features automatic 4-1/2 minute illumination for safety and convenience.
Independent up/down force adjustment; reverses in DOWN, stops in UP.
Allows manual door operation via pull cord disconnect.
Trolley reconnects automatically after emergency disconnect.
Permanently lubricated motor with automatic reset.
Codes can be easily changed by the owner.
Door opening/closing limits adjusted by turning screws.
Prevents transmitter operation; allows UP-only operation from wall control.
Details about the motor type, speed, voltage, and current.
Describes gears, drive type, travel length, travel rate, lamp, and linkage.
Outlines safety features like push button reversal and force adjustments.
Lists overall length, headroom required, and hanging weight.
Regulates door stop points for up and down travel via adjustment screws.
Sets the power required for opening and closing the door.
Ensures the door reverses on contact with a one-inch obstacle.
Optional system to prevent entrapment by breaking an infrared beam.
Procedure to set or change transmitter codes to match the receiver.
Process to synchronize the receiver with the transmitter code.
Lists parts for the rail assembly, including master link and rail sections.
Lists parts needed for installation, like wall control and transmitter components.
Details components within the opener's chassis assembly.
Provides contact information for installation and service support.
Lists required information for ordering replacement parts.
Specifies warranty terms for motors of different models.
Describes a basic remote control for opener operation.
Details a remote with three buttons for multiple functions.
Lists a compact remote with various operational capabilities.
Describes a wired control panel for indoor operation.
Details a wired system for entry without a remote.
Describes an external key switch for manual operation.
Explains a lock for manual door opening during power failure.
