LiftMaster 8500W Wall Mount Garage Door Opener User Manual
This Quick Start Guide is intended to highlight a typical installation; these instructions are not intended to be comprehensive. Because each application is unique, it is the responsibility of the purchaser, designer, installer, and end-user to ensure that the total door system is safe for the intended use. Please consult the manual for further information at: www.liftmaster.com/catalogresourcesv3/en-us/shared/files/tucmanuals/114a4961.pdf.
This garage door opener is compatible with:
- Doors that use a torsion bar and springs. The torsion bar must be 1″ (2.5 cm) diameter. NOT compatible with reverse wound drums.
- 4-6″ (10-15 cm) drums. NOT compatible with tapered drums over 6″ (15 cm).
- High lift doors up to 54″ (137.2 cm) high and standard lift sectional doors up to 14 ft. (4.3 m) high.
- Doors up to 18 ft. (5.5 m) wide.
- Doors up to 180 sq. ft. (16.7 sq. m)
Carton Inventory
Garage Door Opener, Smart Control Panel®, 3-button Remote Control, Battery, Collar, Mounting Bracket, Automatic Garage Door Lock, Cable Tension Monitor, MyQ® LED Remote Light, The Protector System® (1 Sending Sensor and 1 Receiving Sensor), Safety Reversing Sensor Bracket (2), 2 Conductor Bell Wire, Safety Labels and Literature.
Hardware
Screw #10-32 (2), Screw 14-10×2″ (4), Handle, Rope, Screw 1/4″-20×1/2″ (2), Drywall, Anchor (Screw-In) (2), Screw 8-32×1″ (2), Screw 6ABx1-1/4″ (2), Drywall Anchor (2), Screw 6-32×1″ (2), Carriage Bolt 1/4″-20×1/2″ (2), Wing Nut 1/4″-20 (2)
IMPORTANT INSTALLATION INSTRUCTIONS
- Install garage door opener ONLY on properly balanced and lubricated garage door. An improperly balanced door may NOT reverse when required and could result in SEVERE INJURY or DEATH.
- ALL repairs to cables, spring assemblies, and other hardware MUST be made by a trained door systems technician BEFORE installing the opener.
- Disable ALL locks and remove ALL ropes connected to the garage door BEFORE installing the opener to avoid entanglement.
- Where possible, install the door opener 7 feet (2.13 m) or more above the floor.
- Mount the emergency release within reach, but at least 6 feet (1.83 m) above the floor, and avoid contact with vehicles to avoid accidental release.
- NEVER connect the garage door opener to the power source until instructed to do so.
- NEVER wear watches, rings, or loose clothing while installing or servicing the opener. They could be caught in garage doors or opener mechanisms.
- Install the emergency release marking. Attach the marking on or next to the emergency release. Install the entrapment warning placard next to the door control in a prominent location.
- Place the emergency release/safety reverse test label in plain view on the inside of the garage door.
- Upon completion of installation, test the safety reversal system. The door MUST reverse on contact with a 1-1/2″ (3.8 cm) high object (or a 2×4 laid flat) on the floor.
STEP 1 PLANNING
Inspect the proposed installation area to make sure it meets the requirements below. The garage door opener can be installed on either side of the door. The illustrations shown are for installation on the left side.
Inspect the torsion bar while raising and lowering the door; there should be no noticeable shifting or vibrating of the door. If the movement is not corrected, the life of the garage door opener will be greatly reduced.
Lift the door halfway up. Release the door. If balanced, it should stay in place, supported entirely by its springs. Doors heavier than 650 lbs. should NOT open or fall rapidly.
Tools Needed
Additional Items
You May Need Extension brackets (Model 041A5281-1) or wood blocks: Extension brackets or wood blocks may be needed to install the safety reversing sensors. Fastening hardware: Floor mounting of the safety reversing sensors requires hardware not provided. 90˚ connector for cable conduit or flex cable adapter: Required for permanent wiring.
STEP 2 INSTALLATION
Assemble the Garage Door Opener
Mount the Garage Door Opener
- Close the garage door completely. Slide the garage door opener onto the torsion bar. Ensure the collar does NOT touch the bearing. Use a level to align the garage door opener.
- Make sure the mounting bracket is located on a solid surface. If installed on drywall, the mounting bracket MUST be attached to a stud. Mark and drill 3/16″ pilot holes.
- Tighten the collar and set screws on the torsion bar. For a hollow torsion bar, tighten the screws 3/4 – 1 full turn after making contact with the bar. For a solid shaft torsion bar, tighten the screws 1/4 – no more than 1/2 turn after making contact with the shaft. If installing on a keyed torsion bar, DO NOT tighten the screws into the keyway.
- Secure the mounting bracket to the wall. Tighten the mounting bracket to the garage door opener.
Attach the Emergency Release Rope and Handle
- Thread one end of the rope through the hole in the top of the red handle so “NOTICE” reads right side up. Secure with an overhand knot at least 1″ (2.5 cm) from the end of the rope to prevent slipping.
- Insert the other end of the rope through the loop in the emergency release cable and secure with an overhand knot.
- Install the Emergency Release Marking. Attach the marking on or next to the Emergency release.
Install the Automatic Garage Door Lock
Mount the lock above one of the door rollers. The third roller from the bottom of the door is ideal for most installations. Drill holes in the track according to the template provided. Wire to the garage door opener, see WIRING AND POWER (A).
Install the Cable Tension Monitor (Required)
Make sure there are no obstructions that prevent the cable tension monitor from closing completely when slack is detected. For right side installation, remove the snap-ring holding the roller in place and reassemble it on the opposite side of the cable tension monitor. Wire to the garage door opener, see WIRING AND POWER (B).
TROUBLESHOOTING
Your garage door opener is programmed with self-diagnostic capabilities. The UP and DOWN arrows on the garage door opener flash the diagnostic codes.
| Up Arrow Flash(es) | DownArrow Flash(es) | ||
| 1 | 1 | The garage door opener will not close. | Safety sensors are not installed, connected or wires may be cut. Inspect sensor wires for a disconnected or cut wire. |
| 1 | 2 | The garage door opener will not close. | There is a short or reversed wire for the safety sensors. Inspect safety sensor wire at all staple points and connection points and replace wire or correct as needed. |
| 1 | 3 | The door control will not function. | The wires for the door control are shorted or the door control is faulty. Inspect door control wires at all staple points and connection points and replace wire or correct as needed. |
| 1 | 4 | The garagedoor opener will not close. | Safety sensors are misaligned or were momentarily obstructed. Realign both sensors to ensure both LEDs are steady and not flickering. Make sure nothing is hanging or mounted on the door that would interrupt the sensors path while closing. |
| 1 | 5 | Door moves 6-8″ (15-20 cm) stops or reverses. | Manually open and close the door. Check for binding or obstructions, such as a broken spring or door lock, correct as needed. Check wiring connections at travel module and at the logic board. Replace travel module if necessary. |
| No movement, only a single click. | Manually open and close the door. Check for binding or obstructions, such as a broken spring or door lock, correct as needed. Replace logic board if necessary. | ||
| Opener hums for 1-2 seconds no movement. | Manually open and close the door. Check for binding or obstructions, such as a broken spring or door lock, correct as needed. Replace motor if necessary. | ||
| 1 | 6 | Door coast after it has come to a complete stop. | Program travel to coasting position or have door balanced by a trained technician. |
| 2 | 1-5 | No movement or sound. | Replace logic board. |
| 3 | 1 | The garage door opener moves slightly, then stops | Activate the garage door opener again. If problem persists, replace logic board. |
| 3 | 3 | The battery status LED is constantly flashing green. | Battery backup charging circuit error, replace logic board. |
| 3 | 5 | The garage door opener will not close or door reverses during travel. | Check for possible door obstructions and remove. Check that the cable tension monitor is properly connected to the opener. Replace the cable tension monitor. If two cable tension monitors were previously installed and one has been removed, unplug and plug in the opener three times to relearn the monitor to the opener. |
| 4 | 1-4 | Door is moving stops and or reverses. | Manually open and close the door. Check for binding or obstructions, such as a broken spring or door lock, correct as needed. If the door is binding or sticking contact a trained door systems technician. If door is not binding or sticking attempt to reprogram travel. |
| 4 | 5 | Opener runs approximately 6-8″ (15-20 cm), stops and reverses. | Communication error to travel module. Check travel module connections, replace module if necessary. |
| 4 | 6 | The garage door opener will not close. | Safety sensors are misaligned or were momentarily obstructed. Realign both sensors to ensure both LEDs are steady and not flickering. Make sure nothing is hanging or mounted on the door that would interrupt the sensor’s path while closing. |
| 5 | 5 | The door will not close when using Timer-to-Close or MyQ Smartphone Control | MyQ Remote LED Light must be installed to use TTC or MyQ to control the door. Plug in the MyQ Remote LED Light and make sure it is programmed to the garage door opener. |
REFERENCE LINK
https://www.liftmaster.com/dc-battery-backup-wall-mount-wi-fi-garage-door-opener/p/8500WMC
