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The Chamberlain Group, Inc.
845 Larch Avenue
Elmhurst, Illinois 60126-1196
www.liftmaster.com
®
GARAGE DOOR OPENER
Model 2575 3/4 HP
For Residential Use Only
Owner’s Manual
■ Please read this manual and the enclosed safety materials carefully!
■ Fasten the manual near the garage door after installation.
®
■ The door WILL NOT CLOSE unless the Protector System is connected and
properly aligned.
■ Periodic checks of the opener are required to ensure safe operation.
■ The model number label is loca
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TABLE OF CONTENTS Introduction Pages 2-5 Adjustment Pages 24-26 Safety symbol and signal word review ........................2 Adjust the travel limits ...............................................24 Preparing your garage door ........................................3 Adjust the force .........................................................25 Tools needed...............................................................3 Test the safety reversal system.................................26 ® Planni
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1 Preparing your garage door WARNING WARNING Before you begin: To prevent possible SERIOUS INJURY OR DEATH: • Disable locks. • ALWAYS call a trained door systems technician if CAUTION WARNING •Remove any ropes connected to garage door. garage door binds, sticks, or is out of balance. An unbalanced garage door may not reverse when • Complete the following test to make sure your required. garage door is balanced and is not sticking or binding: • NEVER try to loosen, move or adjust garage door, do
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— — — — — — — — Slack in chain tension is normal when garage door is closed. Slack in chain tension is normal when garage door is closed Planning Identify the type and height of your garage door. Survey your garage area to see if any of the conditions below apply to your installation. Additional materials may be required. You may find it helpful to refer back to this page and the accompanying illustrations as you proceed with the installation of your opener. FINISHED CEILING SECT
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LOCK LIGHT Carton Inventory Your garage door opener is packaged in two cartons purchased. If anything is missing, carefully check the which contain the motor unit and all parts illustrated packing material. Parts may be stuck in the foam. below. Accessories will depend on the model Hardware for installation is also listed below. Chain Spreader Remote Control SECURITY✚ Transmitter Visor Clip 3-Channel Remote Control Motion Detecting Door Control Panel Chain Styrofoam 2 Conductor Bell Wire White
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WARNING WARNING ASSEMBLY STEP 1 CAUTION WARNING Attach the T-Rail to the Motor Unit To avoid SERIOUS damage to opener, ONLY use bolts/fasteners mounted in top of motor unit. To avoid installation difficulties, do not run the garage door opener until instructed to do so. Washered Bolt •Remove the bolt and lock nut from the top of the 5/16"-18x1/2" Lock Nut motor unit. Styrofoam • Place rail onto the bolt mounted on the motor unit T-rail and align the back hole with the hole in the top of Hole th
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ASSEMBLY STEP 3 Lock Tighten the Chain Outer Nut Washer Inner Nut To Tighten Outer Nut • Spin the inner nut and lock washer down the threaded shaft, away from the trolley. To Tighten Inner Nut •To tighten the chain, turn outer nut in the direction shown. As you turn the nut, keep the chain from twisting. Trolley • When the chain is approximately 1/2" above the base of the T-rail at its midpoint, re-tighten the inner nut to secure the adjustment. Chain Sprocket noise can result if chain is either
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INSTALLATION STEP 1 Finished Determine the Header Bracket Vertical Ceiling Centerline Location Header Structural 2x4 Wall Supports WARNING WARNING To prevent possible SERIOUS INJURY or DEATH: • Header bracket MUST be RIGIDLY fastened to CAUTION WARNING structural support on header wall or ceiling, otherwise garage door might not reverse when required. DO NOT install header bracket over drywall. • Concrete anchors MUST be used if mounting header Vertical bracket or 2x4 into masonry. Centerline •
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ONE-PIECE DOOR WITHOUT TRACK Unfinished Ceiling 1. Close the door and mark the inside vertical centerline of your garage door. Extend the line Structural onto the header wall above door, as shown. Supports Header Wall Vertical If headroom clearance is minimal, you can install Centerline 2x4 the header bracket on the ceiling. See page 10. 2x4 If you need to install the header bracket on a 2x4 OPTIONAL (on wall or ceiling), use lag screws (not provided) CEILING MOUNT FOR to securely fasten the 2x
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INSTALLATION STEP 2 Install the Header Bracket Wall Mounting Holes You can attach the header bracket either to the wall CEILING MOUNT ONLY above the garage door, or to the ceiling. Follow the The nail hole is for positioning only. instructions which will work best for your particular You must use lag screws UP requirements. Do not install the header bracket to mount the header bracket. over drywall. If installing into masonry, use concrete anchors (not provided). WALL HEADER BRACKET INSTALLAT
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INSTALLATION STEP 3 Attach the T-Rail to the Header Bracket • Position the opener on the garage floor below the header bracket. Use packing material as a protective base. NOTE: If the door spring is in the Header Wall way you’ll need help. Have someone hold the Header opener securely on a temporary support to allow Bracket the rail to clear the spring. Chain • Position the rail bracket against the header Pulley bracket. Bracket • Align the bracket holes and join with a clevis pin as shown. • Ins
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WARNING WARNING INSTALLATION STEP 4 CAUTION WARNING Position the Opener To prevent damage to garage door, rest garage door opener rail on 2x4 placed on top section of door. Follow instructions which apply to your door type as illustrated. SECTIONAL DOOR OR ONE-PIECE DOOR WITH TRACK A 2x4 laid flat is convenient for setting an ideal door- to-rail distance. 2x4 • Raise the opener onto a stepladder. You will need laid flat T-Rail help at this point if the ladder is not tall enough. • Open the door
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INSTALLATION STEP 5 WARNING WARNING Hang the Opener To avoid possible SERIOUS INJURY from a falling garage door opener, fasten it SECURELY to structural Two representative installations are shown. Yours CAUTION supports of the garage. Concrete anchors MUST be used WARNING may be different. Hanging brackets should be angled if installing any brackets into masonry. (Figure 1) to provide rigid support. On finished ceilings (Figure 2), attach a sturdy metal bracket to structural supports before inst
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LOCK LIGHT LOCK LIGHT WARNING WARNING INSTALLATION STEP 6 CAUTION WARNING Install the Door Control To prevent possible SERIOUS INJURY or DEATH from electrocution: Locate door control within sight of the door at a • Be sure power is not connected BEFORE installing door minimum height of 5 feet where small children cannot control. reach, and away from moving parts of the door and • Connect ONLY to 24 VOLT low voltage wires. door hardware. The installation surface must be To prevent possible SERIO
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NOTICE INSTALLATION STEP 7 100 Watt (Max) Standard Light Bulb Install the Lights • Press the release tabs on both sides of lens. Release Tab Gently rotate lens back and downward until the lens hinge is in the fully open position. Do not remove the lens. • Install up to a 100 watt maximum light bulb in each socket. The lights will turn ON and remain lit for approximately 4-1/2 minutes when power is connected. Then the lights will turn OFF. Lens Hinge • Reverse the procedure to close the lens. 10
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INSTALLATION STEP 9 WARNING WARNING Electrical Requirements To prevent possible SERIOUS INJURY or DEATH from electrocution or fire: To avoid installation difficulties, do not run the CAUTION WARNING • Be sure power is not connected to the opener, and opener at this time. disconnect power to circuit BEFORE removing cover to To reduce the risk of electric shock, your garage door establish permanent wiring connection. opener has a grounding type plug with a third • Garage door installation and wiri
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INSTALLATION STEP 10 WARNING WARNING ® Install The Protector System • Be sure power is not connected to the garage door opener BEFORE installing the safety reversing sensor. The safety reversing sensor must be connected CAUTION WARNING • To prevent SERIOUS INJURY or DEATH from a closing and aligned correctly before the garage door garage door: opener will move in the down direction. – Correctly connect and align the safety reversing sensor. This required safety device MUST NOT be IMPORTANT INFO
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INSTALLING THE BRACKETS Figure 1 Be sure power to the opener is disconnected. Install and align the brackets so the sensors will face DOOR TRACK MOUNT (RIGHT SIDE) each other across the garage door, with the beam no higher than 6" above the floor. They may be installed Door in one of three ways, as follows. Track Garage door track installation (preferred): Lip Indicator • Slip the curved arms over the rounded edge of light each door track, with the curved arms facing the door. Snap into place
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MOUNTING AND WIRING THE SAFETY SENSORS Figure 4 • Slide a 1/4"-20x1/2" carriage bolt head into the slot Wing nut on each sensor. Use wing nuts to fasten sensors to brackets, with lenses pointing toward each other across the door. Be sure the lens is not obstructed by a bracket extension (Figure 4). Carriage bolt • Finger tighten the wing nuts. 1/4"-20x1/2" Lens • Run the wires from both sensors to the opener. Use insulated staples to secure wire to wall and ceiling. TROUBLESHOOTING THE SAFETY
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WARNING WARNING CAUTION INSTALLATION STEP 11 WARNING Fasten the Door Bracket To prevent damage to garage door, reinforce inside of door with angle iron both vertically and horizontally. Follow instructions which apply to your door type as illustrated below or on the following page. A horizontal reinforcement brace should be long Header Bracket enough to be secured to two or three vertical supports. A vertical reinforcement brace should cover the height of the top panel. Figure 1 shows one piec
