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Manafacture: Chamberlain File size: 2.37 mb File name: Language of manual:

Push bracket toward front (header end) of rail. Insert carriage bolt through header sleeve bracket. Loosely thread spring nut onto carriage bolt. Insert carriage bolt of header sleeve assembly into bold cut out in pulley bracket. Slide header sleeve assembly on to front (header end) of rail. Rail PieceRail BraceRail assemblyPiece of WoodRail PieceGrease PulleyBracketCarriage BoltHeader Sleeve Bracket Front (Header End) of RailBack(Opener End) of Rail AssemblyPulley BracketInner TrolleyArrow SpringCapBack End of TrolleyMaster Link BarChain LinkINSTALLING THE CHAIN Spring NutHeader SleeveBracketCarriage Bolt 8 ASSEMBLY STEP 3 Attach Chain Spreader Attach chain spreader to opener with phillips pan head screws. Chain SpreaderPhillips Pan Head ScrewsOpenerTo avoid serious damage to opener, ONLY use screws mounted in top of motor unit. WWARNARNINGINGCAUTIONCAUTIONATTENTIONATTENTIONAVERTISSEMENTAVERTISSEMENTASSEMBLY STEP 2 Attach Trolley to Rail Slide outer trolley into rail assembly, be sure arrow on trolley is heading in direction of door is heading in direction of door. Slide outer trolley down rail until it engages with inner trolley. Outer TrolleyArrowArrowRail AssemblyTowards DoorASSEMBLY STEP 4 Fasten Rail to Opener & Install Chain Remove four washered bolts from top of opener. Place To avoid possible SERIOUS INJURY to fingers from moving garage door opener: • ALWAYS keep hand clear of sprocket while operating opener. • Securely attach chain spreader before operating. WWARNARNINGINGCAUTIONCAUTIONWWARNARNINGINGWWARNARNINGINGASSEMBLY STEP 3 Attach Chain Spreader Attach chain spreader to opener with phillips pan head screws. Chain SpreaderPhillips Pan Head ScrewsOpenerTo avoid serious damage to opener, ONLY use screws mounted in top of motor unit. WWARNARNINGINGCAUTIONCAUTIONATTENTIONATTENTIONAVERTISSEMENTAVERTISSEMENTASSEMBLY STEP 2 Attach Trolley to Rail Slide outer trolley into rail assembly, be sure arrow on trolley is heading in direction of door is heading in direction of door. Slide outer trolley down rail until it engages with inner trolley. Outer TrolleyArrowArrowRail AssemblyTowards DoorASSEMBLY STEP 4 Fasten Rail to Opener & Install Chain Remove four washered bolts from top of opener. Place To avoid possible SERIOUS INJURY to fingers from moving garage door opener: • ALWAYS keep hand clear of sprocket while operating opener. • Securely attach chain spreader before operating. WWARNARNINGINGCAUTIONCAUTIONWWARNARNINGINGWWARNARNINGING rail on opener, flush with stops on top of opener. Wrap chain around slot in spreader and over sprocket. Push idler pulley bracket assembly toward front of the rail to eliminate excess slack in chain. Align bolt holes on brackets with bolt holes on opener. Secure brackets to opener with previously removed bolts . Tighten bolts securely. The opener sprocket teeth must engage the chain. Insert bolt into trolley stop bolt hole secure with lock washer and nut. CAUTION: Use only those bolts mounted in the top of opener. Use of any other bolts will cause serious damage to opener. Set Chain Tension Thread spring nut on carriage bolt unit finger tight. Insert a screwdriver tip into one of the slots of the nut ring and brace it firmly against the header sleeve. Place an open end wrench on the square end of the spring nut, slightly rotate nut about 1/4 turn clockwise until nut ring is released against header sleeve. This sets spring to optimum chain tension. chain may slip off sprocket if chain is too loose. If chain does slip retighten spring nut by turing nut clockwise 1/2 turn. Do NOT overtighten chain. 114A2845 9 BoltTrolley Stop Bolt HoleLockWasherNutBoltNutLock WasherWasheredBoltSprocket2Stops4SprocketSpreaderStopsSpreader TipNut RingWrenchSpring NutHeader SleeveFASTEN RAIL TO OPENER SET CHAIN TENSION HARDWARE SHOWN ACTUAL SIZESpring/Trolley Nut Nut RingTrolley25mmBEFORESquareEndNut Ring32mmAFTER RELEASETrolleySquareEnd TipNut RingWrenchSpring NutHeader SleeveFASTEN RAIL TO OPENER SET CHAIN TENSION HARDWARE SHOWN ACTUAL SIZESpring/Trolley Nut Nut RingTrolley25mmBEFORESquareEndNut Ring32mmAFTER RELEASETrolleySquareEnd ASSEMBLY STEP 5 Install Chain Noise Reduction Pads (optional) 114mm114mm 1. Clean and remove grease from 2. With chain tensioned, lift up the 3. Install with adhesive side down rail in areas where pads will be chain and place noise reduction allowing pad to stick to rail. installed. pads under the chain in orientation shown. 114A2845 10 INSTALLATION IMPORTANT INSTALLATION INSTRUCTIONS NNINGINGIONIONWWARNARNINGINGWWARNARNINGING To reduce the risk of severe injury or death: 1. READ AND FOLLOW ALL INSTALLATION WARNINGS AND INSTRUCTIONS. 2. Install garage door opener only on properly balanced and lubricated garage door. An improperly balanced door may not reverse when required and could result in severe injury or death. 3. All repairs to cables, spring assemblies and other hardware MUST be made by a trained door systems technician before installing opener. 4. Disable ...

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