LiftMaster 22240 / K22-240 Commercial Operator Brake Solenoid – 240/460V Applications

The LiftMaster 22240 is a voltage-specific brake-solenoid replacement used in compatible LiftMaster commercial door and industrial gate operators. The solenoid releases the mechanical brake while the operator motor is energized and allows the brake to engage when movement stops.

Also referenced as LiftMaster 22-240 and K22-240.

Features

• Commercial operator brake-release solenoid

• K22-240 service configuration

• Commonly identified as 240V/60Hz

• Used in specified 240/460V operator applications according to the operator wiring and parts documentation

• Restores correct brake release and engagement when the original solenoid has failed

• Designed for compatible LiftMaster Logic 5.0 and legacy equipment

Compatibility

Compatible with select LiftMaster commercial door and gate operators whose parts diagram specifically requires K22-240. Possible applications include voltage-matched versions of:

• Commercial jackshaft and hoist operators

• Commercial trolley operators equipped with a mechanical brake

• GSD commercial slide-door operators

• SL575 and SL585 industrial slide-gate operators

• Other LiftMaster Logic 5.0 operator configurations

Do not select this solenoid using only the operator’s incoming supply voltage. Three-phase operators can use control components operating at a different voltage from the motor supply.

Match all of the following:

• Operator model and revision

• Incoming voltage and phase

• Control-transformer output

• Existing solenoid label

• Original LiftMaster part number

• Operator replacement-parts diagram

Package Contents

• One LiftMaster K22-240 brake-solenoid replacement assembly

Brake mechanism, mounting hardware and wiring are included only when expressly shown or listed.

Installation & Safety

Installation requires a qualified commercial-door or gate-operator technician. Disconnect, lock out and verify the absence of electrical power before servicing.

Never connect this component until its coil rating has been matched to the operator’s brake-control circuit. Incorrect voltage can prevent brake release, destroy the coil or create unsafe door movement. Test brake operation, limits and all safety devices after installation.