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LiftMaster 3850 Support Question

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Question posted by test1cypher on March 23rd, 2014

How To Reinforce Liftmaster Garage Door Bracket

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Related LiftMaster 3850 Manual Pages

3850 Elite Series Manual - Page 1

...; GARAGE DOOR OPENER Models 3850 3850-267 For Residential Use Only Com Details The Chamberlain Group, Inc. 845 Larch Avenue Elmhurst, Illinois 60126-1196 www.liftmaster.com patible with See Page 29 for Owner's Manual ■ Please read this manual and the enclosed safety materials carefully! ■ Fasten the manual near the garage door after installation. ■ The door...

3850 Elite Series Manual - Page 2

...-18 Fasten the door bracket 19-20 Connect door arm to trolley 21-22 Adjustment 23-25 Program the travel limits 23 Set the force 24 Test the safety reversal system 25 Test the Protector System 25 Operation 26-33 Operation safety instructions 26 Using garage door opener 26 Using the wall-mounted door control 27 Using...

3850 Elite Series Manual - Page 3

... binding or sticking. An unbalanced garage door may not reverse when required. • NEVER try to loosen, move or adjust garage door, door springs, cables, pulleys, brackets or their hardware, ALL of which are under EXTREME tension. • Disable ALL locks and remove ALL ropes connected to garage door BEFORE installing and operating garage door opener to avoid entanglement. Lift the...

3850 Elite Series Manual - Page 5

...3850-267 (1) ONLY Motor Unit with Light Lenses 2-Conductor Bell Wire White & White/Red Belt Pulley Bracket Trolley Optional EBvearttCehryarge® Stan(PdbacykPeodwSeerpSaryastteelym) (battery) Belt RReemmootteeCCoonnttrrooll VVisisoorrCClilpip : Styrofoam Belt Cap Retainer One-Piece Rail CEYILING MOUNT ONL UP Header Bracket Door Bracket Curved Door... Your garage door opener is also...

3850 Elite Series Manual - Page 6

... use any other bolts will cause serious damage to door opener. • Position belt over belt pulley. Figure 1 Trolley Nut Ring Trolley Nut Ring ...about 1/4 turn until instructed to do not run the garage door opener until the spring releases and snaps the nut ring against the trolley (Figure 2). • Place a 7/16" open end wrench on top of motor unit. Tighten bolts securely...

3850 Elite Series Manual - Page 7

... over the motor unit belt pulley so the three holes in cap align with #8x3/8" hex screws provided. Upon completion of garage door. 12. Install garage door opener ONLY on the floor. 13. NEVER connect garage door opener to power source until instructed to avoid entanglement. 5. Place entrapment warning label on inside of installation, test safety reversal system...

3850 Elite Series Manual - Page 10

Header Wall Header Bracket Belt Pulley Bracket Garage Door INSTALLATION STEP 3 Attach the Rail to the Header Bracket • Position the opener on a temporary support to allow the rail to secure. Use packing material as shown. • Insert a ring fastener to clear the spring. • Position the rail bracket against the header bracket. • Align the bracket holes and join...

3850 Elite Series Manual - Page 11

...garage door, rest garage door opener rail on 2x4 placed on the trolley release arm to your door type as a support, raise the top of door. SECTIONAL DOOR OR ONE-PIECE DOOR WITH TRACK A 2x4 laid flat is not tall enough. • Open the door...you raise the door, pull down on top section of the opener to -rail distance. • Raise the opener onto a stepladder. Header Bracket Top of ...

3850 Elite Series Manual - Page 12

...: DO NOT connect power to provide rigid support. Measure the distance from a falling garage door opener, fasten it SECURELY to structural supports of the rail surface where the trolley slides with the header bracket if the bracket is not centered above the door). 7. Drill 3/16" pilot holes in line with rail grease. On finished ceilings (Figure...

3850 Elite Series Manual - Page 13

... ONLY) Run bell wire up wall and across ceiling to motor unit. DO NOT pierce wire with a staple, creating a short or open position but will travel . • ALWAYS keep garage door in tabpwusithhisnctraebwwdritivher tip screwdriver tip Antenna Red White Grey Red White Grey 13 To prevent possible SERIOUS INJURY or DEATH from electrocution...

3850 Elite Series Manual - Page 14

... OFF. • Reverse the procedure to close the lens. • Use A19, standard neck garage door opener bulbs for approximately 4-1/2 minutes when power is in each socket. Channel Battery Battery Cover INSTALLATION STEP...• Install a 100 watt maximum light bulb in the fully open position. ALWAYS wear protective gloves and eye protection when changing the battery or working around the...

3850 Elite Series Manual - Page 15

... Emergency Release Handle Rope NOTICE Trolley Release Arm Overhand Knot INSTALLATION STEP 10 Electrical Requirements To avoid installation difficulties, do not run the opener at least 1" (2.5 cm) from a falling garage door: • If possible, use handle to prevent slipping. • Thread the other end of the rope through the 7/8" (2 cm) hole in the...

3850 Elite Series Manual - Page 16

... 6" (15 cm) above floor Invisible Light Beam Protection Area Facing the door from a closing garage door: • Correctly connect and align the safety reversing sensor. Either can be installed on the wall, the brackets must be connected and aligned correctly before the garage door opener will detect an obstacle in the down direction. The invisible light beam...

3850 Elite Series Manual - Page 23

... tested. Push and hold the black button until the door is closed ) position. 6. This sets the DOWN (close) limit and the door should open ) position. Press and hold until the door reaches the desired UP (open . NOTE: Make sure the door opens high enough for a binding or sticking garage door. • After ANY adjustments are made, the safety reversal...

3850 Elite Series Manual - Page 24

... to enter into Force Adjustment Mode LED Black Button Purple Button Figure 3 or LOCK LIGHT 24 If the garage door opener cannot open (UP). 4. The LED will stop flashing when the force has been programmed. Push the door control or programmed remote control a third time to enter unit into the Force Adjustment Mode. Push the...

3850 Elite Series Manual - Page 25

.... Complete Adjustment Steps 1 and 2 Program the Travel Limits and Set the Force. The garage door opener will not move more than 1" (2.5 cm), and the opener lights will flash. If the opener closes the door when the safety reversing sensor is misaligned or obstructed). The door must reverse on the 1-1/2" (3.8 cm) board (or 2x4 laid flat), remove the...

3850 Elite Series Manual - Page 26

... also need adjustment. 10. If fully open garage door. NO ONE SHOULD GO UNDER A STOPPED, PARTIALLY OPEN DOOR. 6. Garage door MUST reverse on contact with the opener lights on when someone walks through the open , the door will also turn off , then on the floor. If closing , the door will stop . 4. ALWAYS keep garage door in an open , the door will reverse. 3. SAVE THESE INSTRUCTIONS...

3850 Elite Series Manual - Page 30

... the emergency release handle and lift the door manually. To reconnect the door to be sure door opens & closes fully. Care of persons and obstructions. • NEVER use handle to disengage trolley ONLY when garage door is unbalanced or binding, call a trained door systems technician. • Check to the opener, press the door control push bar. Pull down on...

3850 Elite Series Manual - Page 32

...Remove sensors from brackets and shorten sensor wires to motor unit using shortened wires. If motor unit activates, replace door control. • If motor unit does not activate, disconnect door control wires from the door control. • Inspect door control/wires ... LED or Diagnostic LED "Learn" Button Installed Safety Reversing Sensor Your garage door opener is programmed with jumper wire.

3850 Elite Series Manual - Page 38

... largest door of your garage door is designed to protect LiftMaster® garage door openers against damage from lightning and power surges. 38 EverCharge® Standby Power System: Provides backup power to operate garage door opener from outside by entering a password on a lamp, television or other appliance from outside by disengaging trolley. 373P 41A5281 Extension Brackets...