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The Chamberlain Group, Inc.
845 Larch Avenue
Elmhurst, Illinois 60126-1196
www.chamberlaingroup.com
®
GARAGE DOOR OPENER
For Residential Use Only
Model M75 - 1/2HP
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
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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 ® Plannin
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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, d
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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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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. Remote Control Sprocket Cover SECURITY✚ Single-Button Transmitter Visor Clip Remote Control Lighted Door Control Button w/ Screws 6ABx1-1/2" Chain Styrofoam Light Lens (1) Header
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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 mounted in top of motor unit. To avoid installation difficulties, do not run the garage door opener until instructed to do so. • Remove the two washered bolts mounted in top of motor unit. USE ONLY THIS • Position T-rail at a 45˚ angle to opener so one hole TYPE AND SIZE Washered bolt in T-rail and motor unit line up. BOLT 5/16"-18x1/2" • Thread one of the washer
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ASSEMBLY STEP 3 Lock Washer Outer Nut Inner Nut Tighten the Chain To Tighten Outer Nut • Spin the inner nut and lock washer down the To Tighten threaded shaft, away from the trolley. 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 eithe
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INSTALLATION STEP 1 Finished Vertical Determine the Header Bracket 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 1. Close the door and mark the inside vertical Ceiling 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 the header bracket on the ceiling. See page 10. 2x4 If you need to install the header bracket on a 2x4 2x4 OPTIONAL (on wall or ceiling), use lag screws (not provided) CEILING MOUNT to securely fasten the 2x4 to
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INSTALLATION STEP 2 Install the Header Bracket Wall Mounting Holes You can attach the header bracket either to the wall above the garage door, or to the ceiling. Follow the CEILING MOUNT ONLY The nail hole is for instructions which will work best for your particular positioning only. You must use lag screws requirements. Do not install the header bracket UP to mount the header bracket. over drywall. If installing into masonry, use concrete anchors (not provided). WALL HEADER BRACKET INSTALLATI
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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 bracket. Pulley • Align the bracket holes and join with a clevis pin Bracket as shown. •
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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. • Raise the opener onto a stepladder. You will need 2x4 help at this point if the ladder is not tall enough. laid flat T-Rail • 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 WARNING supports of the garage. Concrete anchors MUST be used 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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WARNING WARNING INSTALLATION STEP 6 CAUTION WARNING Install the Door Control To prevent possible SERIOUS INJURY or DEATH from electrocution: Locate the 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 control. cannot reach, and away from all moving parts of the • Connect ONLY to 24 VOLT low voltage wires. door and door hardware. To prevent possible SERIOUS INJURY or DEATH from a 1. Strip 1/4" of insu
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NOTICE INSTALLATION STEP 7 Install the Light and Lens Screw INSTALL THE LIGHT • Install a 75 watt maximum light bulb in each socket. The light will turn ON and remain lit for Light Panel Lens approximately 4-1/2 minutes when power is Lens Slot connected. Then the light will turn OFF. • If the bulbs burn out prematurely due to vibration, 75 Watt Max. replace with a Garage Door Opener bulb. Light Bulb Lens Tab INSTALL THE LENS • Locate and loosen (approximately 1/8") the two screws near top of mo
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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 IMPORTANT INFORMATION ABOUT sensor. This required safety device
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INSTALLING THE BRACKETS Figure 1 DOOR TRACK MOUNT (RIGHT SIDE) Be sure power to the opener is disconnected. Install and align the brackets so the sensors will face each other across the garage door, with the beam no Door Track higher than 6" above the floor. They may be installed in one of three ways, as follows. Lip Garage door track installation (preferred): Indicator light • Slip the curved arms over the rounded edge of 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. See Figure 4. Carriage bolt 1/4"-20x1/2" • Finger tighten the wing nuts. 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 INSTALLATION STEP 11 CAUTION 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 enough to be secured to two or three vertical Bracket supports. A vertical reinforcement brace should cover the height of the top panel. Figure 1 shows one piece
