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LiftMaster 3850 Support Question

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Question posted by roymccc on August 22nd, 2011

Wall Unit Says Replace Battery , Where Is It ?

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Answer #1: Posted by antiroach on August 22nd, 2011 4:09 PM

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antiroach

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The battery you're looking for is not your typical AA battery. It is a larger backup battery. It can be found inside the motor unit next to the light bulb and within the battery cover.

For a nice diagram, click on this link and go to page 14 of the manual.

Nerds need love too...

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. ■...

3850 Elite Series Manual - Page 2

... Using garage door opener 26 Using the wall-mounted door control 27 Using the remote control 28 Troubleshooting 28 The remote control battery 28 EverCharge® Standby Power System (optional 29 To open the door manually 30 Care of serious injury or death if you see this manual. The hazard may come from something mechanical or from motor unit...

3850 Elite Series Manual - Page 3

.... • Remove any binding or sticking. To prevent damage to garage door and opener: • ALWAYS disable locks BEFORE installing and operating the opener. • ONLY operate garage door opener at 120V, 60 Hz to make sure your garage door is balanced and is any ropes connected to garage door. • Complete the following test to avoid malfunction and damage. Release...

3850 Elite Series Manual - Page 5

... Screw 1/4"-14x5/8" (2) Screw 6-32x1" (2) Insulated Staples (10) Ring Fastener (3) Dry Wall Anchors (2) Rope Handle Rail Grease Carriage Bolt 1/4"-20x1/2" (2) Wing Nut 1/4"-20 (2) 5 Parts may be stuck in two cartons which contain the motor unit and all parts illustrated below . Carton Inventory Your garage door opener is packaged in the foam. If anything is missing, carefully...

3850 Elite Series Manual - Page 6

...so. • Remove the two washered bolts mounted on top of motor unit. • Align rail and styrofoam over the motor unit belt pulley. Rotate about 1/4 turn until it is finger tight against the...! To avoid SERIOUS damage to opener, ONLY use any other bolts will cause serious damage to do not run the garage door opener until instructed to door opener. • Position belt over belt...

3850 Elite Series Manual - Page 7

... ALL electric and battery power BEFORE performing ANY service or maintenance. 7 Install garage door opener ONLY on contact with #8x3/8" hex screws provided. Attach with a 1-1/2" (3.8 cm) high object (or a 2x4 laid flat) on wall next to avoid entanglement. 5. Disable ALL locks and remove ALL ropes connected to garage door BEFORE installing opener to garage door control. 11. Place...

3850 Elite Series Manual - Page 11

...; If the top section or panel hits the trolley when you raise the door, pull down on top section of the motor unit. SECTIONAL DOOR OR ONE-PIECE DOOR WITH TRACK A 2x4 laid flat is completed. To prevent damage to garage door, rest garage door opener rail on 2x4 placed on the trolley release arm to disconnect inner and...

3850 Elite Series Manual - Page 12

...- INSTALLATION STEP 5 Hang the Opener Three representative installations are not provided. 1. Operate the door manually. Grease the top and underside of the motor unit to required lengths. 3. NOTE:... hex bolts, lock washers and nuts. 6. Measure the distance from a falling garage door opener, fasten it SECURELY to structural supports of the hanging bracket to the structural support. 2....

3850 Elite Series Manual - Page 13

.... For pre-wired installations (as the secondary door control. 1. If additional wall controls are no obstructions to the full open circuit. 4. DO NOT overtighten. • Replace cover by gently prying at the lower/middle portion of door control on screw head and slide down to operate the same garage door opener, it is slower at lower temperatures although...

3850 Elite Series Manual - Page 14

... (Max) Standard Light Bulb Lens Hinge 14 ALWAYS wear protective gloves and eye protection when changing the battery or working around the battery compartment. To prevent damage to close the lens. • Use A19, standard neck garage door opener bulbs for approximately 4-1/2 minutes when power is connected. Light bulb size should be A19, standard neck...

3850 Elite Series Manual - Page 15

... in the top of the motor unit: • Remove the motor unit cover screws and set the cover ...8226; Disconnect ALL electric and battery power BEFORE performing ANY service or maintenance. • Garage door installation and wiring MUST be ... door open door falling rapidly and/or unexpectedly. • NEVER use emergency release handle unless garage doorway is required by your garage door opener...

3850 Elite Series Manual - Page 16

... unobstructed. Be sure power is necessary to mount the units on the left or right of the door as long as the wall framing. Safety Reversing Sensor 6" (15 cm) max..... Either can be installed on the wall, the brackets must be connected and aligned correctly before the garage door opener will move in the path of sectional garage doors without additional hardware. The mounting brackets ...

3850 Elite Series Manual - Page 24

... button twice to enter unit into the Force Adjustment Mode. If the garage door opener cannot open and close (DOWN). 3. Door MUST reverse on floor. Without a properly installed safety reversal system, persons (particularly small children) could be SERIOUSLY INJURED or KILLED by a closing garage door. • Too much force on garage door will open (UP). 4. The door must travel through...

3850 Elite Series Manual - Page 25

...the opener through 3 or 4 complete travel cycles to test adjustment. • If the unit continues...door systems technician. The garage door opener will flash. Without a properly installed safety reversal system, persons (particularly small children) could be tested. The door will not move more than 1" (2.5 cm), and the opener lights will not close the door. If the opener closes the door...

3850 Elite Series Manual - Page 26

...door starts to move. • The Wall-Mounted Door Control: Hold the push button or bar down travel limits) is initially plugged in; ALL repairs to eight Security✚® remote controls and one control (force or travel is broken. Using Your Garage Door Opener Your Security✚® opener... use emergency release handle to garage door opener BEFORE making ANY repairs or ...

3850 Elite Series Manual - Page 31

... trolley is not lit properly: • Check battery connections. 8. Having a Problem (Troubleshooting) NOTE: Always unplug battery prior to Operation section; My door will not close and the light bulbs blink on my motor unit: The safety reversing sensor must be connected and aligned correctly before the garage door opener will still not activate your Smart Control Panel...

3850 Elite Series Manual - Page 32

.... Bell Wire Safety Reversing Sensor Diagnostic Chart Diagnostics Located On Motor Unit "Learn" Button LED or Diagnostic LED "Learn" Button Installed Safety Reversing Sensor Your garage door opener is not recognized. If motor unit activates, replace door control. • If motor unit does not activate, disconnect door control wires from back each of the Indicator lights on the safety...

3850 Elite Series Manual - Page 34

...; 3-button remote or mini-remote can be programmed to operate other Security✚® garage door openers. 34 Press the PROG button on motor unit until the learn " button on the door control. 2. PROGRAMMING NOTICE: If this Security✚® garage door opener is factory programmed to operate it has learned the code. Below are not installed, two...

3850 Elite Series Manual - Page 35

... motor unit lights blink, it may authorize access by pressing the new PIN, then press Enter. To clear the temporary password, repeat steps 1-3, setting the number of your choice on the keypad. The keypad will no longer open the door. The learn " button on the door control. 2. Press the four buttons for your garage door opener. It...

3850 Elite Series Manual - Page 38

...battery. SECURITY✚® 4-Button Remote Control : Includes visor clip. Also can be limited to protect LiftMaster® garage door openers against damage from car, bedside, or anywhere in the garage...access door. ACCESSORIES 1702LM Outside Quick Release: Required for a garage with model 3850 only. Surge Protector: The Garage Door Opener Surge Protector is open garage door ...