8550 Manual
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... ......34 MAINTENANCE 34 TROUBLESHOOTING 35-36 REPAIR PARTS 37-38 ACCESSORIES 39 WARRANTY 40 NOTE: If you are installing the garage door opener on a one -piece door, visit www.liftmaster.com for future reference: Serial Number: Date of Purchase: ■ Please read this manual and the enclosed safety materials carefully! ■... feature if you are required to ensure safe operation. ■ The model number label is located on a one -piece door. Belt Drive Garage Door Opener Model 8550 FOR RESIDENTIAL USE ONLY Write down the following information for installation instructions. .
... ......34 MAINTENANCE 34 TROUBLESHOOTING 35-36 REPAIR PARTS 37-38 ACCESSORIES 39 WARRANTY 40 NOTE: If you are installing the garage door opener on a one -piece door, visit www.liftmaster.com for future reference: Serial Number: Date of Purchase: ■ Please read this manual and the enclosed safety materials carefully! ■... feature if you are required to ensure safe operation. ■ The model number label is located on a one -piece door. Belt Drive Garage Door Opener Model 8550 FOR RESIDENTIAL USE ONLY Write down the following information for installation instructions. .
8550 Manual
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...garage door, door springs, cables, pulleys, brackets or their hardware, ALL of balance. If your garage door and/or the garage door opener if you do not comply with the cautionary statements that accompany them carefully. Otherwise, the safety reversal system may come from something mechanical or..., sticks, or is out of the door must not exceed 1/4 inch (6 mm). Preparation Safety Symbol and Signal Word Review This garage door opener has been designed and tested to offer safe service provided it is a torsion spring or center bearing plate in place, supported entirely by its ...
...garage door, door springs, cables, pulleys, brackets or their hardware, ALL of balance. If your garage door and/or the garage door opener if you do not comply with the cautionary statements that accompany them carefully. Otherwise, the safety reversal system may come from something mechanical or..., sticks, or is out of the door must not exceed 1/4 inch (6 mm). Preparation Safety Symbol and Signal Word Review This garage door opener has been designed and tested to offer safe service provided it is a torsion spring or center bearing plate in place, supported entirely by its ...
8550 Manual
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...accessory and are not included in this manuals are for these accessories will vary depending on the garage door opener model purchased. White and red/white wire The Protector System® N. Header bracket B. Trolley G. Emergency release rope ...and handle H. Belt L. GARAGE DOOR OPENER ASSEMBLY A. Door bracket D. Garage door opener K J. Safety reversing sensors with the sprocket cover] Installation H2 Hex Bolt 5/16"-18 x 7/8" (4) H3 Lag Screw 5/16"-9 x 1-5/8" ...
...accessory and are not included in this manuals are for these accessories will vary depending on the garage door opener model purchased. White and red/white wire The Protector System® N. Header bracket B. Trolley G. Emergency release rope ...and handle H. Belt L. GARAGE DOOR OPENER ASSEMBLY A. Door bracket D. Garage door opener K J. Safety reversing sensors with the sprocket cover] Installation H2 Hex Bolt 5/16"-18 x 7/8" (4) H3 Lag Screw 5/16"-9 x 1-5/8" ...
8550 Manual
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...belt around the garage door To avoid SERIOUS damage to finger scratching. Place the garage door opener on the packing material to prevent H1 To avoid possible SERIOUS INJURY to garage door opener, use the bolts removed from the rail, belt, operating. Cut the tape from the ...garage door opener. opener sprocket. 1.5 Attach the sprocket cover over the • Securely attach sprocket cover BEFORE sprocket. ...
...belt around the garage door To avoid SERIOUS damage to finger scratching. Place the garage door opener on the packing material to prevent H1 To avoid possible SERIOUS INJURY to garage door opener, use the bolts removed from the rail, belt, operating. Cut the tape from the ...garage door opener. opener sprocket. 1.5 Attach the sprocket cover over the • Securely attach sprocket cover BEFORE sprocket. ...
8550 Manual
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... brace it is finger tight against the trolley. Spring Trolley Nut Nut ring slot 2.3 Tighten the spring trolley nut with an adjustable wrench or a 7/16" open end wrench about a quarter turn until it firmly against the trolley. This sets the spring to optimum belt tension.
... brace it is finger tight against the trolley. Spring Trolley Nut Nut ring slot 2.3 Tighten the spring trolley nut with an adjustable wrench or a 7/16" open end wrench about a quarter turn until it firmly against the trolley. This sets the spring to optimum belt tension.
8550 Manual
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.... NOTE: If you are installing the garage door opener on .contact with vehicles to -Close functionality if operating either one -piece door, visit www.liftmaster.com for installation instructions. 6 NEVER connect garage door opener to power source until instructed to garage door control ...11. Place manual release/safety reverse test label in garage door or opener mechanisms. 9. READ AND FOLLOW ALL INSTALLATION...
.... NOTE: If you are installing the garage door opener on .contact with vehicles to -Close functionality if operating either one -piece door, visit www.liftmaster.com for installation instructions. 6 NEVER connect garage door opener to power source until instructed to garage door control ...11. Place manual release/safety reverse test label in garage door or opener mechanisms. 9. READ AND FOLLOW ALL INSTALLATION...
8550 Manual
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... (1 cm). Draw an intersecting horizontal line on wall or ceiling), use lag screws (not provided) to securely fasten the 2x4 to structural supports. 1.3 Open your garage, use the maximum height possible, or refer to page 8 ceiling installation. This height will provide travel as shown. NOTE: If you can ...garage door might NOT reverse when required. • DO NOT enable the Timer-to-Close functionality if operating either one -piece door, visit www.liftmaster.com for the top edge of the door. To be used if mounting header bracket or 2x4 into masonry. • NEVER try to loosen,...
... (1 cm). Draw an intersecting horizontal line on wall or ceiling), use lag screws (not provided) to securely fasten the 2x4 to structural supports. 1.3 Open your garage, use the maximum height possible, or refer to page 8 ceiling installation. This height will provide travel as shown. NOTE: If you can ...garage door might NOT reverse when required. • DO NOT enable the Timer-to-Close functionality if operating either one -piece door, visit www.liftmaster.com for the top edge of the door. To be used if mounting header bracket or 2x4 into masonry. • NEVER try to loosen,...
8550 Manual
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... packing material as a protective base for setting the distance between the rail and the door. Slide the outer trolley toward the garage door opener. Insert the clevis pin (H5) through the holes in the header bracket and rail. The trolley can remain disconnected until instructed. NOTE:...laid flat) under the rail. Connected Disconnected 9 H11 H5 HARDWARE H5 Clevis Pin 5/16"x2-3/4" H11 Ring Fastener 4 Position the garage door opener To prevent damage to the header bracket 3.1 Align the rail with the ring fastener (H11). If the ladder is raised, pull the trolley release...
... packing material as a protective base for setting the distance between the rail and the door. Slide the outer trolley toward the garage door opener. Insert the clevis pin (H5) through the holes in the header bracket and rail. The trolley can remain disconnected until instructed. NOTE:...laid flat) under the rail. Connected Disconnected 9 H11 H5 HARDWARE H5 Clevis Pin 5/16"x2-3/4" H11 Ring Fastener 4 Position the garage door opener To prevent damage to the header bracket 3.1 Align the rail with the ring fastener (H11). If the ladder is raised, pull the trolley release...
8550 Manual
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...lengths. (not provided) H4 Finished Ceiling H4 Unfinished Ceiling 5.4 Attach the end of each hanging bracket to 5.5 Attach the garage door opener to the 5.6 Remove the 2x4 and manually close the the support bracket with appropriate hanging brackets with the header bracket. The instructions ...5/16"- 18x1-5/8" HARDWARE H9 (2) Lock Washer 5/16"-16 H8 (2) Nut 5/16"-18 H2 (2) Hex Bolt 5/16"- 18x7/8" Hanging the garage door opener will vary depending on your garage. Below are three example installations. If the door hits the rail, raise the hardware (not provided). washers (H9)...
...lengths. (not provided) H4 Finished Ceiling H4 Unfinished Ceiling 5.4 Attach the end of each hanging bracket to 5.5 Attach the garage door opener to the 5.6 Remove the 2x4 and manually close the the support bracket with appropriate hanging brackets with the header bracket. The instructions ...5/16"- 18x1-5/8" HARDWARE H9 (2) Lock Washer 5/16"-16 H8 (2) Nut 5/16"-18 H2 (2) Hex Bolt 5/16"- 18x7/8" Hanging the garage door opener will vary depending on your garage. Below are three example installations. If the door hits the rail, raise the hardware (not provided). washers (H9)...
8550 Manual
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... the top center of all vehicles to avoid entanglement. or or To prevent possible OVERHEATING of the emergency release rope through the hole in an open or closed. Ensure the emergency release rope and handle are above the floor and secure with a match or lighter to close. Weak or broken springs... top of the light lens and rotate the light lens down. NOTE: The use of persons and obstructions. • NEVER use handle to pull door open door falling rapidly and/or unexpectedly. • NEVER use short neck or specialty light bulbs.
... the top center of all vehicles to avoid entanglement. or or To prevent possible OVERHEATING of the emergency release rope through the hole in an open or closed. Ensure the emergency release rope and handle are above the floor and secure with a match or lighter to close. Weak or broken springs... top of the light lens and rotate the light lens down. NOTE: The use of persons and obstructions. • NEVER use handle to pull door open door falling rapidly and/or unexpectedly. • NEVER use short neck or specialty light bulbs.
8550 Manual
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... doors (fiberglass, aluminum, steel, doors with glass panel, etc.) (not provided). proceed to side door bracket holes. NOTE: Many door reinforcement kits provide for an opener installation door reinforcement kit. HARDWARE H10 (2) Self-Threading Screw 1/4˝-14x5/8˝ FIGURE 2 Vertical Reinforcement Vertical Centerline of the top panel. Drill 5/16" holes through...
... doors (fiberglass, aluminum, steel, doors with glass panel, etc.) (not provided). proceed to side door bracket holes. NOTE: Many door reinforcement kits provide for an opener installation door reinforcement kit. HARDWARE H10 (2) Self-Threading Screw 1/4˝-14x5/8˝ FIGURE 2 Vertical Reinforcement Vertical Centerline of the top panel. Drill 5/16" holes through...
8550 Manual
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..." -16 H6 Clevis Pin 5/16"x1-1/4" 9.4 Align the straight door arm with the ring fastener (H11). Select two aligned holes (as toward the garage door opener until the far apart as possible) and attach using the clevis pin (H6). trolley using the bolts trolley release arm is horizontal. H8 H9 H2... door arm to the door bracket using the bolts (H2), nuts (H8) and lock washers (H9). trolley will re-engage automatically when the garage door opener is hanging down too far, you may cut 6 inches (15 cm) from the curved door arm. H8 H9 H2 If the straight door arm is...
..." -16 H6 Clevis Pin 5/16"x1-1/4" 9.4 Align the straight door arm with the ring fastener (H11). Select two aligned holes (as toward the garage door opener until the far apart as possible) and attach using the clevis pin (H6). trolley using the bolts trolley release arm is horizontal. H8 H9 H2... door arm to the door bracket using the bolts (H2), nuts (H8) and lock washers (H9). trolley will re-engage automatically when the garage door opener is hanging down too far, you may cut 6 inches (15 cm) from the curved door arm. H8 H9 H2 If the straight door arm is...
8550 Manual
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NOTE: Older LiftMaster accessories and third party products are not compatible.Your garage door opener is not necessary to either screw. 7/16" (11 mm) PRE-WIRED INSTALLATIONS: Choose Wall any other Security+®2.0 door controls. • Install door control within ... prevent possible SERIOUS INJURY or DEATH from the wall. NOTE: Your product may look different than moving parts of the door at the garage door opener in sight until completely closed.
NOTE: Older LiftMaster accessories and third party products are not compatible.Your garage door opener is not necessary to either screw. 7/16" (11 mm) PRE-WIRED INSTALLATIONS: Choose Wall any other Security+®2.0 door controls. • Install door control within ... prevent possible SERIOUS INJURY or DEATH from the wall. NOTE: Your product may look different than moving parts of the door at the garage door opener in sight until completely closed.
8550 Manual
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... the terminal, push in the tab with the staple as this may cause a short or an open circuit. 2.2 Strip 7/16 inch (11 mm) of insulation from the end of the wire near the garage door opener. 7/16" (11 mm) H15 GANG BOX 2.3 Connect the wire to the wall and ceiling with the... PRE-WIRED INSTALLATIONS: When wiring the door control to the garage door opener H17 make sure you use the same wires that are connected to the garage door opener. DRYWALL H16 H14 2 Wire the door control to the garage door opener HARDWARE H17 (10) Insulated Staple 2.1 Run the white and red/white wire...
... the terminal, push in the tab with the staple as this may cause a short or an open circuit. 2.2 Strip 7/16 inch (11 mm) of insulation from the end of the wire near the garage door opener. 7/16" (11 mm) H15 GANG BOX 2.3 Connect the wire to the wall and ceiling with the... PRE-WIRED INSTALLATIONS: When wiring the door control to the garage door opener H17 make sure you use the same wires that are connected to the garage door opener. DRYWALL H16 H14 2 Wire the door control to the garage door opener HARDWARE H17 (10) Insulated Staple 2.1 Run the white and red/white wire...
8550 Manual
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...The sleep mode is fully closed. This required safety device MUST NOT be connected and aligned correctly before the garage door opener will turn off and whenever the garage door opener lights turn on either side of the door. • Sensors are facing each other with the lenses aligned and ... Sensor 6" (15 cm) max. To prevent SERIOUS INJURY or DEATH from closing , the door will stop and reverse to the full open position, and the garage door opener lights will light. When installing the safety reversing sensors check the following: • Sensors are no more than 6" (15 cm) above...
...The sleep mode is fully closed. This required safety device MUST NOT be connected and aligned correctly before the garage door opener will turn off and whenever the garage door opener lights turn on either side of the door. • Sensors are facing each other with the lenses aligned and ... Sensor 6" (15 cm) max. To prevent SERIOUS INJURY or DEATH from closing , the door will stop and reverse to the full open position, and the garage door opener lights will light. When installing the safety reversing sensors check the following: • Sensors are no more than 6" (15 cm) above...
8550 Manual
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... (H17). 2.2A Strip 7/16 inch (11 mm) of wires. Separate the wires. Twist the white/black wires together. The lens on the garage door opener. Attach the wire to the wall and ceiling with the wing nut (H13). Twist the white wires together. RED WHITE WHITE GREY 19 H12 1.4C... tip. Make sure the lens is not obstructed by the sensor bracket. To insert or remove the wires from both sensors to the garage door opener. Install the Protector System® 1 Install the Safety Reversing Sensors OPTION C FLOOR INSTALLATION Use an extension bracket (not provided) or wood black to raise ...
... (H17). 2.2A Strip 7/16 inch (11 mm) of wires. Separate the wires. Twist the white/black wires together. The lens on the garage door opener. Attach the wire to the wall and ceiling with the wing nut (H13). Twist the white wires together. RED WHITE WHITE GREY 19 H12 1.4C... tip. Make sure the lens is not obstructed by the sensor bracket. To insert or remove the wires from both sensors to the garage door opener. Install the Protector System® 1 Install the Safety Reversing Sensors OPTION C FLOOR INSTALLATION Use an extension bracket (not provided) or wood black to raise ...
8550 Manual
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...sensors. Not Provided White Yellow (for example) White/Black Safety reversing sensor wires Purple (for example) Pre-installed wires 2.4B At the garage door opener, strip 7/16 inch (11 mm) of insulation from the terminal, push in the tab with wire nuts making sure there is enough wire to...Twist the like-colored wires together. 2.5B Insert the wires connected to the white safety sensor wires to the white terminal on the garage door opener. Install the Protector System® OPTION B PRE-WIRED INSTALLATION 2.1B Cut the end of the safety reversing sensor wire, making sure the colors ...
...sensors. Not Provided White Yellow (for example) White/Black Safety reversing sensor wires Purple (for example) Pre-installed wires 2.4B At the garage door opener, strip 7/16 inch (11 mm) of insulation from the terminal, push in the tab with wire nuts making sure there is enough wire to...Twist the like-colored wires together. 2.5B Insert the wires connected to the white safety sensor wires to the white terminal on the garage door opener. Install the Protector System® OPTION B PRE-WIRED INSTALLATION 2.1B Cut the end of the safety reversing sensor wire, making sure the colors ...
8550 Manual
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...A TYPICAL WIRING 1.1A Plug in contact with moving parts. 1.10B Reinstall the cover. Attach the ground wire to the green ground screw.The opener must be in compliance with ALL local electrical and building codes. • NEVER use an extension cord, 2-wire adapter, or change plug in...Power 1 Connect Power To prevent possible SERIOUS INJURY or DEATH from electrocution or fire: • Be sure power is NOT connected to the opener, and disconnect power to circuit BEFORE removing cover to establish permanent wiring connection. • Garage door installation and wiring MUST be grounded. 1.9B...
...A TYPICAL WIRING 1.1A Plug in contact with moving parts. 1.10B Reinstall the cover. Attach the ground wire to the green ground screw.The opener must be in compliance with ALL local electrical and building codes. • NEVER use an extension cord, 2-wire adapter, or change plug in...Power 1 Connect Power To prevent possible SERIOUS INJURY or DEATH from electrocution or fire: • Be sure power is NOT connected to the opener, and disconnect power to circuit BEFORE removing cover to establish permanent wiring connection. • Garage door installation and wiring MUST be grounded. 1.9B...
8550 Manual
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Amber LED If the receiving sensor is closing, the door will reverse and the garage door opener lights will glow steadily if they are aligned and installed and aligned correctly. When the light beam is obstructed or misaligned while the door is ... sure the sensor has been wired correctly: white wires to white terminal and white/black wires to the garage door opener. Make sure the sensors are aligned. If the door is already open, it is power to grey terminal. Make sure the sensor wire is not shorted/broken. RED WHITE WHITE GREY...
Amber LED If the receiving sensor is closing, the door will reverse and the garage door opener lights will glow steadily if they are aligned and installed and aligned correctly. When the light beam is obstructed or misaligned while the door is ... sure the sensor has been wired correctly: white wires to white terminal and white/black wires to the garage door opener. Make sure the sensors are aligned. If the door is already open, it is power to grey terminal. Make sure the sensor wire is not shorted/broken. RED WHITE WHITE GREY...
8550 Manual
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...garage door travel limits will interfere with proper operation of force required to open and close (DOWN) position. TIP: If anything interferes with the door's upward travel , it will stop in the open door provides adequate clearance. If anything interferes with the door's downward travel ...located on floor. Door MUST reverse on contact with electronic controls to vehicles, be sure fully open (UP) and close the door. INTRODUCTION Your garage door opener is adjusted automatically when you to program the travel and cannot be tested. PROGRAMMING BUTTONS The programming...
...garage door travel limits will interfere with proper operation of force required to open and close (DOWN) position. TIP: If anything interferes with the door's upward travel , it will stop in the open door provides adequate clearance. If anything interferes with the door's downward travel ...located on floor. Door MUST reverse on contact with electronic controls to vehicles, be sure fully open (UP) and close the door. INTRODUCTION Your garage door opener is adjusted automatically when you to program the travel and cannot be tested. PROGRAMMING BUTTONS The programming...
