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The Chamberlain Group, Inc.
845 Larch Avenue
Elmhurst, Illinois 60126-1196
www.chamberlain.com
GARAGE DOOR OPENER
Models HD175DM 1/2 HP
HD150DM 1/3 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 mo
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TABLE OF CONTENTS Introduction 2-7Adjustment 27-29 Safety symbol and signal word review .............................2 Adjust the travel limits ....................................................27 Preparing your garage door .............................................3 Adjust the force ..............................................................28 Tools needed ....................................................................3 Test the safety reversal system ..............................
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1 Preparing your garage door Before you begin: To prevent possible SERIOUS INJURY or DEATH: � Disable locks. • ALWAYS call a trained door systems technician if garage � Remove any ropes connected to garage door. door binds, sticks, or is out of balance. An unbalanced garage door may not reverse when required. � Complete the following test to make sure your • NEVER try to loosen, move or adjust garage door, door garage door is balanced and is not sticking or binding: springs, cables, pu
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— — — — — — — — Planning � Do you have an access door in addition to the garage Identify the type and height of your garage door. Survey your garage area to see if any of the conditions below door? If not, Model 7702CB Emergency Key Release is required. See Accessories page. apply to your installation. Additional materials may be required. You may find it helpful to refer back to this � Look at the garage door where it meets the floor. Any page and the accompanying illustr
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Planning (Continued) ONE-PIECE DOOR INSTALLATIONS Without a properly working safety reversal system, persons (particularly small children) could be SERIOUSLY INJURED � Generally, a one-piece door does not require or KILLED by a closing garage door. reinforcement. If your door is lightweight, refer to the • The gap between the bottom of the garage door and the information relating to sectional doors in Installation floor MUST NOT exceed 1/4" (6 mm). Otherwise, the safety Step 11. reversa
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Carton Inventory Your garage door opener is packaged in one carton Hardware for assembly and installation is shown on the which contains the motor unit and all parts illustrated next page. Save the carton and packing material until below. Accessories will depend on the model purchased. installation and adjustment is complete. If anything is missing, carefully check the packing material. PARTS MAY BE STUCK IN THE FOAM. Lighted Door Control Button Motor Unit with a Light Lens with (2) screws
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Hardware Inventory Separate all hardware and group as shown below for the assembly and installation procedures. ASSEMBLY HARDWARE Nut Lock Nut Lock Washer 3/8" (1) 1/4"-20 (2) 3/8" (1) Bolt 1/4"-20x1-3/4 (2) Master Link (2) Idler Bolt (1) Trolley Threaded Shaft (1) INSTALLATION HARDWARE Carriage Bolt Wing Nut Ring Nut 5/16"-18 (8) Handle 1/4"-20x1/2" (2) 1/4"-20 (2) Fastener (3) Lag Screw Hex Bolt Lock Washer 5/16" (7) Insulated 5/16"-9x1-5/8" (2) 5/16"-18x7/8" (4) Staples (30)
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ASSEMBLY STEP 1 Assemble the Rail & Install the Trolley To prevent INJURY from pinching, keep hands and fingers away from the joints while assembling the rail. To avoid installation difficulties, do not run the garage door opener until instructed to do so. The front rail has a cut out “window” at the door end 3. Place the motor unit on packing material to protect the (see illustration). The hole above this window is larger cover, and rest the back end of the rail on top. For on the top of t
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ASSEMBLY STEP 2 Fasten the Rail to the Motor Unit To avoid SERIOUS damage to garage door opener, use ONLY � Insert a 1/4"-20x1-3/4 bolt into the cover protection bolt those bolts/fasteners mounted in the top of the opener. hole on the back end of the rail as shown. Tighten securely with a 1/4"-20 lock nut. Do NOT overtighten. � Remove the two bolts from the top of the motor unit. Hex Screws � Place the “U” bracket, flat side down onto the motor 8-32x7/16" unit and align the bracket ho
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ASSEMBLY STEP 4 Install the Chain/Cable To avoid possible SERIOUS INJURY to fingers from moving 1. Pull the cable around the idler pulley and toward the garage door opener: trolley. • ALWAYS keep hand clear of sprocket while operating opener. 2. Connect the cable to the retaining slot on the trolley, • Securely attach chain spreader BEFORE operating. as shown (Figure 1): � From below, push pins of master link bar up through Dispensing Carton cable link and trolley slot. Leave Chain and
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ASSEMBLY STEP 5 Tighten the Chain Figure 1 Trolley � Spin the inner nut and lock washer down the trolley Outer Lock Threaded Nut Washer threaded shaft, away from the trolley. Shaft To Tighten Outer Nut � To tighten the chain, turn outer nut in the direction shown (Figure 1). Inner Nut � When the chain is approximately 1/4" (6 mm) above the base of the rail at its midpoint, re-tighten the inner To Tighten nut to secure the adjustment. Inner Nut Sprocket noise can result if chain is too lo
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INSTALLATION STEP 1 Unfinished Determine the Header Bracket Ceiling OPTIONAL Location CEILING MOUNT FOR HEADER BRACKET Header Wall 2x4 To prevent possible SERIOUS INJURY or DEATH: Vertical Centerline of Garage Door • Header bracket MUST be RIGIDLY fastened to structural 2x4 support on header wall or ceiling, otherwise garage door Structural Supports might not reverse when required. DO NOT install header bracket over drywall. • Concrete anchors MUST be used if mounting header bracket or 2x4
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INSTALLATION STEP 2 Wall Mount Install the Header Bracket You can attach the header bracket either to the wall UP above the garage door, or to the ceiling. Follow the instructions which will work best for your particular requirements. Do not install the header bracket over drywall. If installing into masonry, use concrete anchors (not provided). Optional WALL HEADER BRACKET INSTALLATION Mounting Holes � Center the bracket on the vertical centerline with the bottom edge of the bracket on
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INCREASE TRAVEL DOWN UP INSTALLATION STEP 3 Attach the Rail to the Header Bracket NOTE: (Optional) With some existing installations, you may re-use the old header bracket with the two plastic spacers included in the hardware bag. Place the spacers inside the bracket on each side of the rail, as illustrated. � 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 way you’ll need help. Have someone ho
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INSTALLATION STEP 4 Position the Opener To prevent damage to garage door, rest garage door opener Follow instructions which apply to your door type as rail on 2x4 placed on top section of door. illustrated. SECTIONAL DOOR OR ONE-PIECE DOOR WITH TRACK A 2x4 laid flat is convenient for setting an ideal door-to-rail distance. Rail � Remove foam packaging. � Raise the opener onto a stepladder. You will need help at this point if the ladder is not tall enough. � Open the door all the way and
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INSTALLATION STEP 5 Hang the Opener To avoid possible SERIOUS INJURY from a falling garage Three representative installations are shown. Yours may door opener, fasten it SECURELY to structural supports of the garage. Concrete anchors MUST be used if installing ANY be different. Hanging brackets should be angled brackets into masonry. (Figure 1) to provide rigid support. On finished ceilings (Figure 2 and Figure 3), attach a sturdy metal bracket to structural supports before installing the
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INSTALLATION STEP 6 Install the Door Control To prevent possible SERIOUS INJURY or DEATH from Locate door control within sight of door at a minimum electrocution: height of 5 feet (1.5 m) where small children cannot • Be sure power is not connected BEFORE installing door reach, and away from all moving parts of door and door control. hardware. • Connect ONLY to 24 VOLT low voltage wires. 1. Strip 1/4" (6 mm) of insulation from one end of the bell To prevent possible SERIOUS INJURY or DE
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NOTICE INSTALLATION STEP 7 Install the Light and Lens To prevent possible OVERHEATING of the endpanel or light socket: INSTALL THE LIGHT • DO NOT use short neck or specialty light bulbs. � Install a 75 watt maximum light bulb in the socket. • DO NOT use halogen bulbs. Use ONLY incandescent. Light bulb size should be A19, standard neck only. The To prevent damage to the opener: light will turn ON and remain lit for approximately • DO NOT use bulbs larger than 75W. 4-1/2 minutes when power
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INSTALLATION STEP 9 Electrical Requirements To prevent possible SERIOUS INJURY or DEATH from To avoid installation difficulties, do not run the electrocution or fire: opener at this time. • Be sure power is not connected to the opener, and 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 grounding • Garage door installation and wiring MUST be in c
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INSTALLATION STEP 10 ® 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 and aligned correctly before the garage door opener will To prevent SERIOUS INJURY or DEATH from a closing move in the down direction. garage door: • Correctly connect and align the safety reversing sensor. IMPORTANT INFORMATION ABOUT This required safety device MUST NOT be disabled. THE SAF
