IMPORTANT: The groove on the straightdoor armMUSTface awayfromthe curved door arm. 5.The opener should be installed above the center ofthe door.Ifthere isa torsion spring or center bearing plate in the wayofthe header bracket,itmay be installed within 4 feet(1.2 m) to the leftor rightofthe door center.See page 7. The model LiftMaster 8355W door operator is manufactured by Chamberlain Group. The sending sensor (with an amber LED) transmitsan invisible lightbeamto the receiving sensor (with a green LED).Ifan obstruction breaksthe light beamwhile the door isclosing,the door will stop and reverse to the full open position,and the garage door opener lightswill flash 10 times. 8.3Mark,drill holesand install asfollows,depending on your door’sconstruction: Metalorlight weight doors usinga verticalangle ironbrace betweenthe doorpanelsupport andthe doorbracket: • Drill 3/16" fastening holes.Secure the door bracketusing the two selfthreading screws. 1.3Markthe location ofthe bottommounting hole and drill a 5/32 inch (4 mm) hole. . To preventpossible SERIOUS INJURY or DEATHfromelectrocution: •Be sure power isNOTconnected BEFORE installing door control. . . 2.1A Center the bracketon the vertical centerline with the bottomedge ofthe bracketon the horizontal line asshown (with the arrowpointing toward the ceiling). 7.NEVERconnectgarage door opener to power source until instructed to do so. The model Liftmaster 8355 door operator is manufactured by the Chamberlain Group. 21-22, Adjustments . . . For the vertical brace,2 piecesofangle iron are used to create a U-shaped support.The bestsolution isto checkwith your garage door manufacturer for an opener installation door reinforcement kit. . The 8355 1/2 HP Belt Drive Garage Door Opener is the perfect choice if you want both quiet and smooth-running reliability, or simply have rooms positioned above your garage. 7/16" (11 MM) 1.8 Position the bottomhole ofthe door control over the screwand slide down into place.Attach the top screw. . . . . – any latin characters (a-z, A-Z)– any numbers (0-9)– special characters ("-", "_" and "."). As more convenient features, this opener also is equipped with built-in MyQ® technology that lets you monitor and control your garage door and house lights remotely by using a computer or smartphone with the available LiftMaster Internet Gateway. . Step 2 Find the two dials on the back of the power unit. 2.2B Center the bracketon the vertical mark, no more than 6" (15 cm) fromthe wall. •Sensorsare facing each other with the lensesaligned and the receiving sensor lensdoesnotreceive directsunlight. . . •Sensorsare no more than 6 inches(15 cm) above the floor and the lightbeamisunobstructed. . . •NEVERuse handle to pull door open or closed.Ifrope knotbecomesuntied,you could fall. Install the safetyreversing sensor so beam isNO HIGHERthan 6" (15 cm) above garage floor. * Also included: a hardware bag for installation (includes all necessary hardware for installation). When you see these SafetySymbolsand Signal Wordson the following pages,theywill alertyou to the possibilityofserious injury ordeathifyou do notcomplywith the warningsthataccompany them.The hazard maycome fromsomething mechanical or fromelectricshock.Read the warningscarefully. 2.2A Markthe vertical setofbracketholes(do notuse the holesdesignated for ceiling mount).Drill 3/16" pilotholesand fasten the bracketsecurelyto a structural supportwith lag screws. ALWAYS keep hand clear ofsprocketwhile operating opener. 32, Troubleshooting. 2.4B Atthe garage door opener,strip 7/16 inch (11 mm) ofinsulation fromeach end ofthe wirespreviouslychosen for the, 2.5B Insertthe wiresconnected to the white safetysensor wiresto the. . . Install garage door opener ONLY on properlybalanced and lubricated garage door.An improperlybalanced door mayNOTreverse when required and could resultin SEVERE INJURY or DEATH. PRE-WIREDINSTALLATIONS: When wiring the door control to the garage door opener make sure you use the same wiresthatare connected to the door control. Ancaster, Brantford, Guelph, Halton Hills, Hamilton, Kitchener, Mississauga, Oakville, Other Cities... Business hours: Monday to Friday 8 AM to 4:30 PM, 58 Wetmores Rd, Mount Pleasant, ON N0E 1K0, 224 Suncoast Dr E, Located inside Fisher Glass & Mirror, Goderich, ON N7A 4K4, Business hours: Monday to Friday 8 AM to 5 PM, Copyright Garaga Inc. | Privacy Policy and Conditions of Use | Sitemap, Commercial & Industrial maintenance & repair services. . •NEVERtryto loosen,move or adjust garage door,door springs,cables,pulleys, bracketsor their hardware,ALL ofwhich are under EXTREME tension.
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