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The Chamberlain Group, Inc.
845 Larch Avenue
Elmhurst, Illinois 60126-1196
www.chamberlain.com
GARAGE DOOR OPENER
Model CG40DM 1/2 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 i
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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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Preparing your garage door Before you begin: • Disable locks. To prevent possible SERIOUS INJURY or DEATH: • ALWAYS call a trained door systems technician if • Remove any ropes connected to garage door. garage door binds, sticks, or is out of balance. An • Complete the following test to make sure your garage unbalanced garage door may NOT reverse when door is balanced and is not sticking or binding: required. 1. Lift the door about halfway as shown. Release the • NEVER try to loosen
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— — — — — — — — Planning Identify the type and height of your garage door. Survey • Look at the garage door where it meets the fl oor. Any your garage area to see if any of the conditions below gap between the fl oor and the bottom of the door must apply to your installation. Additional materials may be not exceed 1/4" (6 mm). Otherwise, the safety reversal required. You may fi nd it helpful to refer back to this page system may not work properly. See Adjustment Step 3. and th
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Planning (Continued) ONE-PIECE DOOR INSTALLATIONS Without a properly working safety reversal system, • Generally, a one-piece door does not require persons (particularly small children) could be reinforcement. If your door is lightweight, refer to the SERIOUSLY INJURED or KILLED by a closing garage information relating to sectional doors in Installation door. Step 11. • The gap between the bottom of the garage door • Depending on your door’s construction, you may need and the fl oor MU
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Carton Inventory Your garage door opener is packaged in one carton which PARTS MAY BE STUCK IN THE FOAM. Hardware for contains the motor unit and all parts illustrated below. assembly and installation is shown on the next page. Accessories will depend on the model purchased. If Save the carton and packing material until installation and anything is missing, carefully check the packing material. adjustment is complete. ® SECURITY ✚ Lighted Door Control Button Motor Unit with a Light Lens Singl
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Hardware Inventory Separate all hardware and group as shown below for the assembly and installation procedures. ASSEMBLY HARDWARE Lock Nut Lock Washer Nut 1/4"-20 (2) 3/8" (1) 3/8" (1) Bolt 1/4"-20x1-3/4" (2) Master Idler Bolt (1) Link (2) Trolley Threaded Shaft (1) INSTALLATION HARDWARE Wing Nut Ring Nut 5/16"-18 (8) Handle Carriage Bolt 1/4"-20 (2) Fastener (3) 1/4"-20x1/2" (2) Lag Screw Hex Bolt Insulated Lock Washer 5/16" (7) INSTALLATION HARDWARE 5/16"-9x1-5/8" (2) 5/16"-18x7/8" (4) Stap
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ASSEMBLY STEP 1 Assemble the Rail & Install the Trolley To prevent INJURY from pinching, keep hands and fi ngers away from the joints while assembling the rail. To avoid installation diffi culties, do not run the garage door opener until instructed to do so. The front rail has a cut out “window” at the door end (see 4. As a temporary trolley stop, insert a screwdriver into illustration). The hole above this window is larger on the the hole 10" (25 cm) away from the front of the rail, as top o
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ASSEMBLY STEP 2 Fasten the Rail to the Motor Unit To avoid SERIOUS damage to garage door opener, use ONLY those bolts/fasteners mounted in the top of • Insert a 1/4"-20x1-3/4" bolt into the cover protection the opener. bolt hole on the back end of the rail as shown. Tighten securely with a 1/4"-20 lock nut. DO NOT overtighten. Hex Screws • Remove the two bolts from the top of the motor unit. 8-32x7/16" • Place the “U” bracket, fl at side down onto the motor unit and align the bracket h
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ASSEMBLY STEP 4 Install the Chain/Cable To avoid possible SERIOUS INJURY to fi ngers from 1. Pull the cable around the idler pulley and toward the moving garage door opener: trolley. • ALWAYS keep hand clear of sprocket while operating opener. 2. Connect the cable to the retaining slot on the trolley, as shown (Figure 1): • Securely attach chain spreader BEFORE operating. • From below, push pins of master link bar up through cable link and trolley slot. • Push master link cap over pins
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Figure 1 Outer ASSEMBLY STEP 5 Lock Trolley Nut Washer Threaded To Tighten Outer Nut Tighten the Chain Shaft • Spin the inner nut and lock washer down the trolley Inner Nut threaded shaft, away from the trolley. • To tighten the chain, turn outer nut in the direction To Tighten Inner Nut shown (Figure 1). Figure 2 • When the chain is approximately 1/4" (6 mm) above the base of the rail at its midpoint, re-tighten the inner Chain nut to secure the adjustment. Sprocket noise can result
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Unfi nished INSTALLATION STEP 1 OPTIONAL Ceiling CEILING Determine the Header Bracket Location MOUNT FOR HEADER Header BRACKET Wall 2x4 Vertical Centerline To prevent possible SERIOUS INJURY or DEATH: of Garage Door 2x4 Structural • Header bracket MUST be RIGIDLY fastened to Supports 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 brack
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Wall Mount INSTALLATION STEP 2 Install the Header Bracket You can attach the header bracket either to the wall 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). WALL HEADER BRACKET INSTALLATION Optional Mounting Holes • Center the bracket on the vertical centerline with the bottom edge of the bracket on the
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INCREASE TRAVEL DOWN UP Header Wall INSTALLATION STEP 3 Header Bracket Idler Pulley Ring Attach the Rail to the Header Bracket Fastener • Position the opener on the garage fl oor below the Header header bracket. Use packing material as a protective Bracket base. NOTE: If the door spring is in the way you’ll need help. Have someone hold the opener securely on a temporary support to allow the rail to clear the spring. Clevis Mounting Pin • Position the rail bracket against the header brac
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INSTALLATION STEP 5 Hang the Opener To avoid possible SERIOUS INJURY from a falling garage door opener, fasten it SECURELY to structural Three representative installations are shown. Yours may supports of the garage. Concrete anchors MUST be be different. Hanging brackets should be angled used if installing any brackets into masonry. (Figure 1) to provide rigid support. On fi nished 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 reach, and away from all moving parts of door and door door control. hardware. • Connect ONLY to 24 VOLT low voltage wires. 1. Strip 1/4" (6 mm) of insulation from one end of the To prevent possible SERIOUS INJURY or DEATH
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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 an A19 standard neck, 75 watt maximum light • DO NOT use halogen bulbs. Use ONLY bulb in the socket. The light will turn ON and remain incandescent. lit for approximately 4-1/2 minutes when power is To prevent damage to the opener: connected. Then the light will turn OFF. • DO NOT use bulbs larger tha
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INSTALLATION STEP 9 Electrical Requirements To prevent possible SERIOUS INJURY or DEATH from electrocution or fi re: To avoid installation diffi culties, do not run the opener • Be sure power is NOT connected to the opener, at this time. and disconnect power to circuit BEFORE removing To reduce the risk of electric shock, your garage door cover to establish permanent wiring connection. opener has a grounding type plug with a third grounding • Garage door installation and wiring MUST be in
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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 To prevent SERIOUS INJURY or DEATH from a aligned correctly before the garage door opener will closing garage door: move in the down direction. • Correctly connect and align the safety reversing IMPORTANT INFORMATION ABOUT sensor. This required safety device MUST NOT be THE SAFETY R
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Figure 1 DOOR TRACK MOUNT (RIGHT SIDE) INSTALLING THE BRACKETS Be sure power to the opener is disconnected. Install and align the brackets so the sensors will face each other Door Track across the garage door, with the beam no higher than 6" (15 cm) above the fl oor. They may be installed in one of Lip Indicator three ways, as follows. Light Garage door track installation (preferred): • Slip the curved arms over the rounded edge of each Safety door track, with the curved arms facing the d
