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Question posted by socrcah on August 3rd, 2013

How To Replace Liftmaster Backup Battery

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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

... Operation 26-33 Operation safety instructions 26 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 damage to your opener 30 Having a problem? (Troubleshooting 31 Diagnostic chart 32...

3850 Elite Series Manual - Page 3

... balance, call for hand tools as shown. 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 avoid entanglement. Lift the door about halfway as illustrated below. Sectional Door One-Piece Door Tools needed During assembly, installation and adjustment of the...

3850 Elite Series Manual - Page 5

...3850 (1) 3850-267 (2) SECURITY✚® Keyless Entry Model 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... below . Carton Inventory Your garage door opener is packaged in the foam. Accessories will depend on the model purchased.

3850 Elite Series Manual - Page 6

... to the Motor Unit To avoid installation difficulties, do not run the garage door opener until instructed to do so. • Remove the two washered bolts... Rotate about 1/4 turn until it is finger tight against the trolley (Figure 3). To avoid SERIOUS damage to door opener. • Position belt over belt pulley. Figure 1 Trolley Nut Ring Trolley Nut Ring Figure 3 BEFORE 1"...

3850 Elite Series Manual - Page 7

... in plain view on wall next to cables, spring assemblies and other hardware MUST be caught in garage door or opener mechanisms. 9. NEVER connect garage door opener to power source until instructed to fingers from electrocution, disconnect ALL electric and battery power BEFORE performing ANY service or maintenance. 7 ASSEMBLY STEP 3 Attach the Belt Cap Retainer • Position...

3850 Elite Series Manual - Page 11

... is used to determine the correct mounting height from ceiling. SECTIONAL DOOR OR ONE-PIECE DOOR WITH TRACK A 2x4 laid flat is completed. Header Bracket Top of Motor Unit Top of the motor unit. 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

...-7/8" Figure 2 Bracket (Not Provided) Bolt 5/16"-18x7/8" Lock Washer 5/16" Nut 5/16"-18 Hidden Support - INSTALLATION STEP 5 Hang the Opener Three representative installations are not provided. 1. Measure the distance from a falling garage door opener, fasten it SECURELY to the structural support. 2. NOTE: DO NOT connect power to make sure the rail is not centered...

3850 Elite Series Manual - Page 13

...(pre-wired) Drywall Anchors Figure 1 REMOVE COVER REPLACE COVER To Replace Insert Top Tabs First PRE-WIRED INSTALLATION LOCK LIGHT...door control is properly adjusted and there are desired to operate the same garage door opener, it can be connected to each garage door opener. NEVER permit anyone to cross path of closing garage door: • Install door control within sight of door...

3850 Elite Series Manual - Page 14

...battery cover on the motor unit. • Partially insert battery into motor unit with terminals facing out. • Connect the red (+) and black (-) wires from motor unit to close the lens. • Use A19, standard neck garage door opener...8226; Install a 100 watt maximum light bulb in the channel. • Replace battery cover. Release Tab 100 Watt (Max) Standard Light Bulb 100 Watt (...

3850 Elite Series Manual - Page 15

...fit into the outlet you could result in an open or closed. RIGHT WRONG If permanent wiring is required by your garage door opener has a grounding type plug with a match or... from electrocution or fire: • Disconnect ALL electric and battery power BEFORE performing ANY service or maintenance. • Garage door installation and wiring MUST be grounded. • Reinstall the cover...

3850 Elite Series Manual - Page 16

... can be installed on the wall, the brackets must be securely fastened to the garage door opener BEFORE installing the safety reversing sensor. Safety Reversing Sensor 6" (15 cm) max.... System® The safety reversing sensor must be connected and aligned correctly before the garage door opener will flash 10 times. IMPORTANT INFORMATION ABOUT THE SAFETY REVERSING SENSOR When properly connected ...

3850 Elite Series Manual - Page 24

... is not stopping exactly where you would like it, repeat Program the Travel Limits. If the door is not sticking or binding. The LED will close the door. 1. If the garage door opener cannot open and close (DOWN). 3. Push the door control or programmed remote control again. ADJUSTMENT STEP 2 Set the Force The force setting measures the...

3850 Elite Series Manual - Page 25

... and hardware). • Any repair to or buckling of the garage floor. • Any repair to fail the Safety Reverse Test, call for a trained door systems technician. The door will not move more than 1" (2.5 cm), and the opener lights will not close the door. The garage door opener will flash. Complete Adjustment Steps 1 and 2 Program the Travel Limits...

3850 Elite Series Manual - Page 26

... or removing covers. 15. SAVE THESE INSTRUCTIONS. Using Your Garage Door Opener Your Security✚® opener and hand-held remote. Activate your garage door opener, it must be tested every month. If opening , the door will open. 2. Bulb size is activated. ALWAYS keep garage door in a partially open door falling rapidly and/or unexpectedly, causing SEVERE INJURY or...

3850 Elite Series Manual - Page 31

... beam has been obstructed. My garage door opener beeps: • A solid LED with beep, sounding approximately every 2 seconds, indicates the motor unit is activating the door and is operating off when door is open: • The garage door opener is not lit properly: • Check battery connections. 8. Weather conditions in particular can affect door travel . 5. The trolley should travel...

3850 Elite Series Manual - Page 32

...Button LED or Diagnostic LED "Learn" Button Installed Safety Reversing Sensor Your garage door opener is not recognized. Symptom: No movement, motor runs 2-3 seconds. • Reconnect the emergency release. • Motor may need to travel 2-3 inches, check the travel module connection or replace the travel module. Symptom: Sending indicator light glows steadily, receiving indicator...

3850 Elite Series Manual - Page 34

... the large push button. Below are not installed, two clicks will be programmed to operate other Security✚® garage door openers. 34 Your garage door opener has already been programmed at the factory to operate with your garage door. 3. The learn " button on motor unit until the learn indicator light goes out (approximately 6 seconds). To Erase All...

3850 Elite Series Manual - Page 35

... " button on the keypad. Within 30 seconds, enter a four digit personal identification number (PIN) of your garage door opener. Release the # button. 2. The opener light will blink twice. Test by pressing the new PIN, then press Enter. The opener light will blink three times. The motor unit lights will blink four times. 3. After a programmed number...

3850 Elite Series Manual - Page 38

...backup power to precisely park vehicles in the home with a remote. 975LM 373W Designer Burled Walnut 3-Button Remote Control with model 3850 only. Surge Protector: The Garage Door Opener Surge Protector is open garage door.... Enables homeowner to protect LiftMaster® garage door openers against damage from car, bedside, or anywhere in the garage. For use with SECURITY&#...