8550 Manual
Page 1
... your garage door opener. ■ This garage door opener is located on the left side panel of the garage door opener are installing the garage door opener on a one -piece door. The Timer -To-Close is to ensure safe operation. ■ The model number label is ONLY compatible with sectional doors. www.liftmaster.com The...28 FEATURES 29 DOOR CONTROL 30-31 REMOTE CONTROLS 32-33 TO ERASE THE MEMORY 33 TO OPEN THE DOOR MANUALLY ......34 MAINTENANCE 34 TROUBLESHOOTING 35-36 REPAIR PARTS 37-38 ACCESSORIES 39 WARRANTY 40 Belt Drive Garage Door Opener Model 8550 FOR RESIDENTIAL USE...
... your garage door opener. ■ This garage door opener is located on the left side panel of the garage door opener are installing the garage door opener on a one -piece door. The Timer -To-Close is to ensure safe operation. ■ The model number label is ONLY compatible with sectional doors. www.liftmaster.com The...28 FEATURES 29 DOOR CONTROL 30-31 REMOTE CONTROLS 32-33 TO ERASE THE MEMORY 33 TO OPEN THE DOOR MANUALLY ......34 MAINTENANCE 34 TROUBLESHOOTING 35-36 REPAIR PARTS 37-38 ACCESSORIES 39 WARRANTY 40 Belt Drive Garage Door Opener Model 8550 FOR RESIDENTIAL USE...
8550 Manual
Page 2
... it should be installed within 4 feet (1.2 m) to the left or right of the door center. Read them . If your garage door and/or the garage door opener if you do not comply with the instructions and warnings contained in place, supported entirely by...ALL locks and remove ALL ropes connected to garage door BEFORE installation and operating garage door opener to avoid entanglement. 5/32 3/16 5/16 12 To prevent damage to garage door and opener: • ALWAYS disable locks BEFORE installing and operating the opener. • ONLY operate garage door opener at 120 V, 60 Hz to avoid ...
... it should be installed within 4 feet (1.2 m) to the left or right of the door center. Read them . If your garage door and/or the garage door opener if you do not comply with the instructions and warnings contained in place, supported entirely by...ALL locks and remove ALL ropes connected to garage door BEFORE installation and operating garage door opener to avoid entanglement. 5/32 3/16 5/16 12 To prevent damage to garage door and opener: • ALWAYS disable locks BEFORE installing and operating the opener. • ONLY operate garage door opener at 120 V, 60 Hz to avoid ...
8550 Manual
Page 3
... Staples (10) Depending on the garage door opener model purchased. Trolley G. The images throughout this manual. Door bracket D. Straight door arm A B CF G D E F. White and red/white wire The Protector System® N. Garage door opener K J. Header bracket B. Curved door arm E. Door control M. Emergency release rope and ...in this manuals are for these accessories will vary depending on your garage door opener. Belt L. GARAGE DOOR OPENER ASSEMBLY A. Safety reversing sensors with white and white/black wire attached: Sending Sensor (1) Receiving Sensor...
... Staples (10) Depending on the garage door opener model purchased. Trolley G. The images throughout this manual. Door bracket D. Straight door arm A B CF G D E F. White and red/white wire The Protector System® N. Garage door opener K J. Header bracket B. Curved door arm E. Door control M. Emergency release rope and ...in this manuals are for these accessories will vary depending on your garage door opener. Belt L. GARAGE DOOR OPENER ASSEMBLY A. Safety reversing sensors with white and white/black wire attached: Sending Sensor (1) Receiving Sensor...
8550 Manual
Page 4
... the belt around the garage door To avoid SERIOUS damage to garage door opener, use the bolts removed from the garage door opener. opener sprocket. 1.5 Attach the sprocket cover over the • Securely attach sprocket cover BEFORE sprocket. operating opener. 1.2 Align the rail and the styrofoam over the garage door opener sprocket and attach with the sprocket cover) 4 from moving garage door opener: 1.1 Remove the two...
... the belt around the garage door To avoid SERIOUS damage to garage door opener, use the bolts removed from the garage door opener. opener sprocket. 1.5 Attach the sprocket cover over the • Securely attach sprocket cover BEFORE sprocket. operating opener. 1.2 Align the rail and the styrofoam over the garage door opener sprocket and attach with the sprocket cover) 4 from moving garage door opener: 1.1 Remove the two...
8550 Manual
Page 6
... INSTALLATION WARNINGS AND INSTRUCTIONS. 2. Place entrapment warning label on wall next to -Close functionality if operating either one -piece door, visit www.liftmaster.com for installation instructions. 6 NOTE: If you are installing the garage door opener on the floor. 13. ALL repairs to avoid entanglement. 5. NEVER wear watches, rings or loose clothing while installing or...
... INSTALLATION WARNINGS AND INSTRUCTIONS. 2. Place entrapment warning label on wall next to -Close functionality if operating either one -piece door, visit www.liftmaster.com for installation instructions. 6 NOTE: If you are installing the garage door opener on the floor. 13. ALL repairs to avoid entanglement. 5. NEVER wear watches, rings or loose clothing while installing or...
8550 Manual
Page 7
...enable the Timer-to loosen, move or adjust garage door, springs, cables, pulleys, brackets, or their hardware, ALL of which are installing the garage door opener on the wall upside down if necessary, to page 8 ceiling installation. An unbalanced garage door might NOT reverse when required. DO NOT install ... enabled ONLY when operating a sectional door. To be used if mounting header bracket or 2x4 into masonry. • NEVER try to -Close functionality if operating either one -piece door, visit www.liftmaster.com for the top edge of Garage Door 2x4 OPTIONAL CEILING MOUNT FOR HEADER ...
...enable the Timer-to loosen, move or adjust garage door, springs, cables, pulleys, brackets, or their hardware, ALL of which are installing the garage door opener on the wall upside down if necessary, to page 8 ceiling installation. An unbalanced garage door might NOT reverse when required. DO NOT install ... enabled ONLY when operating a sectional door. To be used if mounting header bracket or 2x4 into masonry. • NEVER try to -Close functionality if operating either one -piece door, visit www.liftmaster.com for the top edge of Garage Door 2x4 OPTIONAL CEILING MOUNT FOR HEADER ...
8550 Manual
Page 9
... is raised, pull the trolley release arm down to garage door, rest garage door opener rail on 2x4 placed on top section of door. 4.1 Remove the packing material and lift the garage door opener onto a ladder. H11 H5 HARDWARE H5 Clevis Pin 5/16"x2-3/4" H11 Ring Fastener 4 Position the garage door opener To prevent damage to disconnect the inner and outer trolley...
... is raised, pull the trolley release arm down to garage door, rest garage door opener rail on 2x4 placed on top section of door. 4.1 Remove the packing material and lift the garage door opener onto a ladder. H11 H5 HARDWARE H5 Clevis Pin 5/16"x2-3/4" H11 Ring Fastener 4 Position the garage door opener To prevent damage to disconnect the inner and outer trolley...
8550 Manual
Page 10
... before installing the garage door opener. 5.2 Make sure the garage door opener is aligned with the bolts (H2), lock door. header bracket. (not provided) H2 H9 H8 10 Installation 5 Hang the garage door opener To avoid possible SERIOUS INJURY from each side of the garage door opener to the support ...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. Measure the distance from a falling garage door opener, fasten it SECURELY to structural supports of the examples below. Concrete anchors MUST be used ...
... before installing the garage door opener. 5.2 Make sure the garage door opener is aligned with the bolts (H2), lock door. header bracket. (not provided) H2 H9 H8 10 Installation 5 Hang the garage door opener To avoid possible SERIOUS INJURY from each side of the garage door opener to the support ...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. Measure the distance from a falling garage door opener, fasten it SECURELY to structural supports of the examples below. Concrete anchors MUST be used ...
8550 Manual
Page 13
... emergency release handle. The (H2), nuts (H8) and lock washers (H9). trolley using the clevis pin (H6). the door) about 2" (5 cm). Attach with the curved door arm. Select two aligned holes (as toward the garage door opener until the far apart as possible) and attach using the bolts trolley release arm is hanging down too...
... emergency release handle. The (H2), nuts (H8) and lock washers (H9). trolley using the clevis pin (H6). the door) about 2" (5 cm). Attach with the curved door arm. Select two aligned holes (as toward the garage door opener until the far apart as possible) and attach using the bolts trolley release arm is hanging down too...
8550 Manual
Page 14
... keep garage door in a later step. NOTE: Your product may look different than moving parts of the wire and separate the wires. Use the existing holes in the gang box. 1.1 Strip 7/16 inch (11 mm) of insulation from 1.2 Connect one wire to door travel. NOTE: Older LiftMaster accessories and... of any two wires to connect, note which wires H16 GANG BOX are used so the correct wires are not compatible.Your garage door opener is compatible with door control push buttons or remote control transmitters. can be connected to either screw. 7/16" (11 mm) PRE-WIRED INSTALLATIONS: Choose...
... keep garage door in a later step. NOTE: Your product may look different than moving parts of the wire and separate the wires. Use the existing holes in the gang box. 1.1 Strip 7/16 inch (11 mm) of insulation from 1.2 Connect one wire to door travel. NOTE: Older LiftMaster accessories and... of any two wires to connect, note which wires H16 GANG BOX are used so the correct wires are not compatible.Your garage door opener is compatible with door control push buttons or remote control transmitters. can be connected to either screw. 7/16" (11 mm) PRE-WIRED INSTALLATIONS: Choose...
8550 Manual
Page 15
...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 ... terminals on the garage door opener. RED WHITE WHITE GREY 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. Attach the top screw. Install the Door Control k 1.5 Position the bottom hole of the door control over the...
...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 ... terminals on the garage door opener. RED WHITE WHITE GREY 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. Attach the top screw. Install the Door Control k 1.5 Position the bottom hole of the door control over the...
8550 Manual
Page 17
...For energy efficiency the garage door opener will move in the down until the garage door opener has completed 5 cycles upon power up. above floor If an obstruction breaks the light beam while the door is unobstructed. The sleep mode shuts the garage door opener down direction. The garage door opener will flash 10 times....stop and reverse to the receiving sensor (with an amber LED) transmits an invisible light beam to the full open position, and the garage door opener lights will not go into the sleep mode until activated. The sleep mode is fully closed. To prevent ...
...For energy efficiency the garage door opener will move in the down until the garage door opener has completed 5 cycles upon power up. above floor If an obstruction breaks the light beam while the door is unobstructed. The sleep mode shuts the garage door opener down direction. The garage door opener will flash 10 times....stop and reverse to the receiving sensor (with an amber LED) transmits an invisible light beam to the full open position, and the garage door opener lights will not go into the sleep mode until activated. The sleep mode is fully closed. To prevent ...
8550 Manual
Page 19
... Insert the bolt through the hole in the tab with the wing nut (H13). Separate the wires. Attach the wire to the garage door opener. Twist the white wires together. To insert or remove the wires from the wall and unobstructed. 1.2C Attach the sensor brackets to...wires together. Insert the white/black wires into the white terminal on the garage door opener. HARDWARE H17 H17 (10) Insulated Staple 7/16" (11 mm) 2.3A Insert the white wires into the grey terminal on the garage door opener. Install the Protector System® 1 Install the Safety Reversing Sensors OPTION ...
... Insert the bolt through the hole in the tab with the wing nut (H13). Separate the wires. Attach the wire to the garage door opener. Twist the white wires together. To insert or remove the wires from the wall and unobstructed. 1.2C Attach the sensor brackets to...wires together. Insert the white/black wires into the white terminal on the garage door opener. HARDWARE H17 H17 (10) Insulated Staple 7/16" (11 mm) 2.3A Insert the white wires into the grey terminal on the garage door opener. Install the Protector System® 1 Install the Safety Reversing Sensors OPTION ...
8550 Manual
Page 20
... purple wire. 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 each sensor. Yellow Yellow (for example) Purple (for each end of insulation from the ...terminal, push in the tab with wire nuts making sure there is enough wire to the grey terminal on the garage door opener. Safety reversing sensor wires 7/16" Pre-installed wires (11 mm) 7/16" (11 mm) 2.3B Connect the pre-installed wires to the...
... purple wire. 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 each sensor. Yellow Yellow (for example) Purple (for each end of insulation from the ...terminal, push in the tab with wire nuts making sure there is enough wire to the grey terminal on the garage door opener. Safety reversing sensor wires 7/16" Pre-installed wires (11 mm) 7/16" (11 mm) 2.3B Connect the pre-installed wires to the...
8550 Manual
Page 21
...the top of the motor unit (according to local code): 1.1B Be sure power is NOT connected to the opener, and disconnect power to circuit. 1.2B Remove the garage door opener cover and set aside. 1.3B Remove the attached green ground terminal. 1.4B Cut black and white wires and ... procedure. To avoid installation difficulties, do not activate the garage door opener at this time. THERE ARE TWO OPTIONS FOR CONNECTION POWER: OPTION A TYPICAL WIRING 1.1A Plug in the garage door opener into a grounded outlet. 1.2A DO NOT run garage door opener at this time. To make it fit outlet. Attach the...
...the top of the motor unit (according to local code): 1.1B Be sure power is NOT connected to the opener, and disconnect power to circuit. 1.2B Remove the garage door opener cover and set aside. 1.3B Remove the attached green ground terminal. 1.4B Cut black and white wires and ... procedure. To avoid installation difficulties, do not activate the garage door opener at this time. THERE ARE TWO OPTIONS FOR CONNECTION POWER: OPTION A TYPICAL WIRING 1.1A Plug in the garage door opener into a grounded outlet. 1.2A DO NOT run garage door opener at this time. To make it fit outlet. Attach the...
8550 Manual
Page 22
... is on the screen. 22 Make sure the sensors are aligned. wired correctly. If the door is closing, the door will reverse and the garage door opener lights will display on the opposite side of the door. (invisible light beam) Green LED SENDING SENSOR RECEIVING SENSOR IF THE AMBER LED ON THE... by loosening the wing nuts, aligning the sensors, and tightening the wing nuts. . RED WHITE WHITE GREY 3 Ensure the Door Control is power to the garage door opener. Amber LED If the receiving sensor is in both sensors are glowing steadily. IF THE GREEN LED ON THE RECEIVING SENSOR IS...
... is on the screen. 22 Make sure the sensors are aligned. wired correctly. If the door is closing, the door will reverse and the garage door opener lights will display on the opposite side of the door. (invisible light beam) Green LED SENDING SENSOR RECEIVING SENSOR IF THE AMBER LED ON THE... by loosening the wing nuts, aligning the sensors, and tightening the wing nuts. . RED WHITE WHITE GREY 3 Ensure the Door Control is power to the garage door opener. Amber LED If the receiving sensor is in both sensors are glowing steadily. IF THE GREEN LED ON THE RECEIVING SENSOR IS...
8550 Manual
Page 23
...If anything interferes with 1-1/2" (3.8 cm) high object (or 2x4 laid flat) on the left side panel of the garage door opener and are made, the safety reversal system MUST be tested. The adjustments allow you program the travel and cannot be changed. INTRODUCTION ...Your garage door opener is adjusted automatically when you to program the travel. Door MUST reverse on contact with the door's upward travel it will reverse. TIP: If anything interferes with proper operation of safety...
...If anything interferes with 1-1/2" (3.8 cm) high object (or 2x4 laid flat) on the left side panel of the garage door opener and are made, the safety reversal system MUST be tested. The adjustments allow you program the travel and cannot be changed. INTRODUCTION ...Your garage door opener is adjusted automatically when you to program the travel. Door MUST reverse on contact with the door's upward travel it will reverse. TIP: If anything interferes with proper operation of safety...
8550 Manual
Page 24
... beep is in the 1.6 Press and release the UP Button. Door MUST reverse on contact with proper operation of garage door travel to the programmed DOWN position. NOTE: The UP and DOWN Buttons can be garage door opener lights will travel limits will interfere with 1-1/2" (3.8 cm) high ...the 1.7 Press and release the DOWN Button. The garage door opener lights will fl ash twice and the UP Button will begin to flash. * If the garage door opener lights are aligned and unobstructed, cycle the door through a complete up and door, repeat the steps for Program the Travel, the...
... beep is in the 1.6 Press and release the UP Button. Door MUST reverse on contact with proper operation of garage door travel to the programmed DOWN position. NOTE: The UP and DOWN Buttons can be garage door opener lights will travel limits will interfere with 1-1/2" (3.8 cm) high ...the 1.7 Press and release the DOWN Button. The garage door opener lights will fl ash twice and the UP Button will begin to flash. * If the garage door opener lights are aligned and unobstructed, cycle the door through a complete up and door, repeat the steps for Program the Travel, the...
8550 Manual
Page 25
... the floor), call a trained door systems technician. 3 Test the Protector System 3.1 Open the door. The door will not move more than an inch (2.5 cm), and the garage door opener lights will not close the door. Door MUST reverse on contact with the board. The garage door opener will flash 10 times. Repeat the test. If the garage door opener closes the door when the safety reversing...
... the floor), call a trained door systems technician. 3 Test the Protector System 3.1 Open the door. The door will not move more than an inch (2.5 cm), and the garage door opener lights will not close the door. Door MUST reverse on contact with the board. The garage door opener will flash 10 times. Repeat the test. If the garage door opener closes the door when the safety reversing...
8550 Manual
Page 26
... or working around the battery compartment. 2 Test the battery 2.1 Unplug the garage door opener. Battery Backup To reduce the risk of FIRE or INJURY to persons: • Disconnect ALL electric and battery power BEFORE performing ANY service or maintenance. • Use ONLY LiftMaster part # 485LM for the green Battery Status LED to start flashing...
... or working around the battery compartment. 2 Test the battery 2.1 Unplug the garage door opener. Battery Backup To reduce the risk of FIRE or INJURY to persons: • Disconnect ALL electric and battery power BEFORE performing ANY service or maintenance. • Use ONLY LiftMaster part # 485LM for the green Battery Status LED to start flashing...
