050ACTBMC - Garage door opener LIFT-MASTER - Free user manual and instructions

Product type	Garage door opener
Brand	LIFT-MASTER
Model	050ACTBMC
Power supply	120 V AC, 60 Hz
Motor power	1/2 HP (approx. 373 W)
Drive type	Belt
Remote control frequency	390 MHz
Backup battery	12 V, 2.5 Ah (integrated)
Weight	Approximately 12 kg
Dimensions (L × H × D)	340 × 240 × 140 mm
Material	Metal and plastic
Main functions	Automatic opening/closing, safety reversal system, obstacle detection, remote control programming, myQ compatibility
Maintenance	Clean sensors, check cables, test reversal system monthly
Safety	Protector System®, safety reversal, emergency stop
Available spare parts	Remote controls, sensors, motherboard, battery
Warranty	2 years
General information	Made in the USA, compliant with UL standards

Frequently Asked Questions - 050ACTBMC LIFT-MASTER

How to install the new receiver motherboard?

Unplug the power, remove the lamp lens, disconnect the wires and harnesses, remove the old motherboard, then install the new one by reconnecting the wires and tightening the screws. Refer to the manual for details.

How to program a remote control?

Press and release the LEARN button on the opener. Within 30 seconds, press and hold the remote button until the lights flash. Release, the code is learned.

How to adjust the door travel limits?

Press and hold the adjustment button until the UP button flashes. Use the arrows to position the door at the top and bottom, pressing adjust after each position. The lights flash to confirm.

How to test the safety reversal system?

Place a 1.5-inch (3.8 cm) board under the open door. Close the door with the remote. The door should reverse upon contact with the board. If it does not reverse, repeat limit adjustment or call a technician.

Why won't the door close with the remote control?

Check that the safety sensors are aligned and unobstructed. Each sensor's indicator light should be on. If a light is off, realign the sensors. The sensors must be within 6 inches (15 cm) of the floor.

How to replace the backup battery?

Unplug the power, remove the end panel, locate the battery, disconnect it, and replace it with a 12 V 2.5 Ah battery. Wear gloves and safety glasses.

What to do if the opener emits a long beep after force adjustment?

This means the automatic force adjustment failed. Restart the travel programming from step 1. Make sure the sensors are aligned.

How to connect the opener to myQ?

After installing the new motherboard, use the myQ serial number on the provided label to add the opener to your myQ account. Refer to the user guide for Wi-Fi steps.

Why do the lights flash 5 times during limit adjustment?

This indicates that the travel limits were not set correctly. Restart the travel programming procedure from the beginning.

What regular maintenance is needed?

Test the safety reversal system monthly. Clean the sensors and check the cables. Replace the backup battery every 2-3 years.

USER MANUAL 050ACTBMC LIFT-MASTER

RECEIVER LOGIC BOARD REPLACEMENT

Model 050ACTWFMC

Installation

1 Before you begin

Your garage door opener has an internal gateway located on the receiver logic board. After installing the new receiver logic board, use the myQ serial number found on the provided label to add your garage door opener to your myQ account. The products illustrated in the instructions are for reference. Your product may look different.

WARNING

To prevent possible SERIOUS INJURY or DEATH:

- Disconnect ALL electric and battery power BEFORE performing ANY service or maintenance.

CAUTION

To prevent damage to the receiver/logic board, DO NOT touch printed circuit board of replacement receiver/logic board during installation.

ALWAYS wear protective gloves and eye protection when changing the battery or working around the battery compartment.

1.1 Remove the light lens by pulling the top sides of the light lens and rotate the light lens down. Squeeze the light lens clips to remove lens from end panel.

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1.2 To maintain your warranty, place the provided label over the existing label on the end panel of the garage door opener.

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1.3 Disconnect power to the garage door opener.

8-9

2 Remove the receiver logic board

2.1 Disconnect the wires from the quick-connect terminals (A) Remove the receiver logic board end panel from the garage door opener.

A To insert or remove the wires from the terminal, push in the tab with a screwdriver tip.

2.2 Unplug the wire harnesses from the receiver logic board. You may need needle-nosed pliers to remove the harnesses.

Diagram of an electronic component with internal circuitry and two arrows indicating direction (no text or symbols)

2.3 Remove the receiver logic board from the end panel by removing the 2 screws and releasing the 2 clips.

receiver the moving clips. Wire clip Screws clips

3 Install new receiver logic board

3.1 Connect the wire harnesses to the new receiver logic board. When reconnecting the wire harness, be sure the tabs on the wire harness are facing the end panel, not the logic board.

End Panel Wire Harness Tabs Logic Board Wire Clip NOTE: if your logic board has a wire clip, use the wire clip to hold wires to the logic board.

3.2 Insert the antenna wires through the holes in the end panel. Snap the receiver logic board into place on the end panel and fasten with screws.

Antenna vires

NOTE: Some models will require the short antenna wire to be placed in the traps of the end panel.

3.3 Reinsert the wires.

Door control wires:

- white wire into the white terminal. - white/red wire into the red terminal Safety sensor wires:

- white wires into the white terminal. - white/black wires into the grey terminal.

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To insert or remove the wires from the terminal, push in the tab with a screwdriver tip.

3.4 Install the light lens by aligning with the hinges and snapping into place. Reconnect power.

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NOTE: When installing the light lens, ensure the antenna wires are hanging straight down.

NOTE: A test of the safety reverse system is necessary for safe operation.

Programming

1 Program a remote control using the learn button

1.1 Press and release the Learn button on the garage door opener. The Learn indicator light will glow steadily for 30 seconds.

Learn Indicator Light Yellow Learn Button

1.2 Within 30 seconds, press and hold the button on the remote control.

1.3 Release the button when the garage door opener light blinks. It has learned the code. If light bulbs are not installed, two clicks will be heard.

Illustration of two hands holding a small electronic device and a close-up of its internal components (no text or symbols visible)

To program the Wi-Fi garage door opener to your network refer to your owner's manual.

Adjustment

1 Program the travel

WARNING

Without a properly installed safety reversal system, persons (particularly small children) could be SERIOUSLY INJURED or KILLED by a closing garage door.

- Incorrect adjustment of garage door travel limits will interfere with proper operation of safety reversal system.

•AfterANY adjustments are made, the safety reversal system MUST be tested. Door MUST reverse on contact with 1-1/2" (3.8 cm) high object (or 2x4 laid flat) on floor

While programming the travel, the UP and DOWN buttons can be used to move the door as needed. The Safety Reversing Sensors will be disconnected during the Program the Travel process. During the Automatic Force Setup the door will automatically open and close.

1.1 Press and hold the Adjustment Button until the UP Button begins to flash and/or a beep is heard.

The Safety Reversing Sensors will be disconnected during the Program the Travel process.

1.2 Press and hold the UP Button until the door is in the desired UP position.

1.3 Once the door is in the desired UP position press and release the Adjustment Button. The garage door opener lights will flash twice and the DOWN Button will begin to flash.

1.4 Press and hold the DOWN button until the door is in the desired DOWN position.

1.5 Once the door is in the desired DOWN position press and release the Adjustment Button. The garage door opener lights will flash twice. Program the Travel is now complete. If the garage door opener lights flash 5 times, then programming has timed out and the Travel Limits have not been set. Please restart the Program the Travel process.

1.6 Add the Step Saver sticker under the yellow program button.

2 Automatic Force Set Up

Once both the up and down positions have been manually set, the Safety Reversing Sensors will reconnect and become operational. Then, the opener will enter a force-sensing operation by automatically moving the door open and close. The garage door opener will sound an audible and visual alert before automatically opening and closing the door. The garage door opener will beep three times, confirming that the Automatic Force Setup completed successfully. Adjustment is complete.

If you hear one long beep after the door attempts to move, then the Automatic Force Set Up has not completed successfully. Please start over at step 1 of Program the Travel..

Test the Safety Reversal System

WARNING

Without a properly installed safety reversal system, persons (particularly small children) could be SERIOUSLY INJURED or KILLED by a closing garage door.

• Safety reversal system MUST be tested every month.
• After ANY adjustments are made, the safety reversal system MUST be tested. Door MUST reverse on contact with 1-1/2" high (3.8 cm) object (or 2x4 laid flat) on the floor.

3.1 With the door fully open, place a 1-1/2 inch (3.8 cm) board (or a 2x4 laid flat) on the floor, centered under the garage door.

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3.2 Press the remote control push button to close the door. The door MUST reverse when it makes contact with the board.

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If the door stops but does not reverse:

1. Repeat Program the Travel (see Adjustment Step 1);
2. Repeat the Safety Reversal test. If the test continues to fail, call a trained door systems technician.

Test the Protector System®

WARNING

Without a properly installed safety reversing sensor, persons (particularly small children) could be SERIOUSLY INJURED or KILLED by a closing garage door.

4.1 Open the door. Place an obstruction in the path of the door.

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4.2 Pressthe remote control push button to close the door. The door will not move more than an inch (2.5 cm).

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The garage door opener will not close from a remote control if the LED in either safety reversing sensor is off (alerting you to the fact that the sensor is misaligned or obstructed).

If the garage door opener closes the door when the safety reversing sensor is obstructed (and the sensors are no more than 6 inches [15 cm] above the floor), call for a trained door systems technician.

REPLACEMENT DU RÉCEPTEUR DE LA CARTE MÈRE

Modèle 050ACTWFMC

Montage

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Technical diagram of a digital camera with labeled components and a legend box in Chinese for product information and usage.

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Diagram showing a device with labeled components and a magnified view of its internal structure, including a hand pointing to a terminal block.

Line drawing of a mechanical device with a curved arrow indicating rotation (no text or symbols)

Line drawing of a two-story house with a garage and roof, no text or symbols present

Illustration of a hand holding a small car with a house in the background (no text or symbols)

Line drawing of a two-story house with a garage and parked door (no text or symbols)

Line drawing of a hand holding a car near a house (no text or symbols)

Line drawing of a camera with a curved arrow indicating rotation (no text or symbols)

Technical diagram of a camera with labeled components and a legend box in Chinese explaining parts.

Diagram showing a washing machine with a label pointing to it, indicating a device's status or status.

Diagram of an electronic component with arrows indicating direction, showing internal circuitry and connectors (no text or symbols)

Diagram showing a device with labeled components and a magnified view of its internal structure, likely illustrating a power or control system.

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dos clics.

Line drawing of a two-story house with a garage and roof, no text or symbols present

Illustration of a hand holding a small car model next to a two-story house (no text or symbols)

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