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LiftMaster 3850 Support Question

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Question posted by jhcarmyb on October 16th, 2013

How To Disconnect Backup Battery For Garage Door

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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. ■...

3850 Elite Series Manual - Page 2

... the Protector System 25 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 offer safe service provided it...

3850 Elite Series Manual - Page 3

... about halfway as illustrated below. 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. Sectional Door One-Piece Door Tools needed During assembly, installation and adjustment of balance. To prevent possible SERIOUS INJURY or DEATH: • ALWAYS...

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... which contain the motor unit and all parts illustrated below . Carton Inventory Your garage door opener is packaged in the foam.

3850 Elite Series Manual - Page 6

...; Position belt over belt pulley. ASSEMBLY STEP 1 Attach the Rail 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 mounted on the threaded shaft until the spring releases and snaps the nut ring ...

3850 Elite Series Manual - Page 7

.... 3. Disable ALL locks and remove ALL ropes connected to garage door BEFORE installing opener to do so. 8. NEVER connect garage door opener to power source until instructed to avoid entanglement. 5. To avoid SERIOUS PERSONAL INJURY or DEATH from electrocution, disconnect ALL electric and battery power BEFORE performing ANY service or maintenance. 7 An improperly balanced...

3850 Elite Series Manual - Page 11

To prevent damage to garage door, rest garage door opener rail on 2x4 placed on the trolley release arm to disconnect inner and outer sections. SECTIONAL DOOR OR ONE-PIECE DOOR WITH TRACK A 2x4 laid flat is convenient for setting an ideal door-to the top of the door. • Using a stepladder as illustrated. You will need help at this point...

3850 Elite Series Manual - Page 12

... INJURY from each bracket to make sure the rail is not centered above the door). 7. Remove foam packaging. Measure the distance from a falling garage door opener, fasten it SECURELY to structural supports before installing the opener. Remove the 2x4. If the door hits the rail, raise the header bracket. 8. Concrete anchors MUST be different. Hanging brackets...

3850 Elite Series Manual - Page 13

... the R (1) (Figure 2). 2. Strip 7/16" (11 mm) of insulation from electrocution: • Be sure power is properly adjusted and there are desired to operate the same garage door opener, it is slower at the lower/middle portion of the cover with 6AB x 1-1/4" self-tapping screws (drywall installation) or 6-32 x 1" machine screws (into drywall, drill...

3850 Elite Series Manual - Page 14

... a 100 watt maximum light bulb in the channel. • Replace battery cover. Then the lights will turn 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 the fully open position. Release Tab 100 Watt (Max) Standard Light Bulb 100...

3850 Elite Series Manual - Page 15

...outer trolley. • Adjust rope length so the handle is required by your garage door opener has a grounding type plug with an overhand knot. Overhand Knot Emergency Release ...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 ...

3850 Elite Series Manual - Page 16

... necessary. INSTALLATION STEP 11 Install The Protector System® The safety reversing sensor must be connected and aligned correctly before the garage door opener will detect an obstacle in the path of the door as long as the wall framing. Extension brackets (see Accessories) are designed to clip onto the track of wood at...

3850 Elite Series Manual - Page 23

... vehicle. 3. Black moves the door UP (open) and purple moves the door DOWN (close , press and release either button to be sure fully open ) limit and begins closing garage door. • Incorrect adjustment of the door by a closing the door (Figure 3). 4. Push and hold until the door reaches the desired UP (open . Immediately when the door begins to reach the desired...

3850 Elite Series Manual - Page 24

... sticking garage door. • After ANY adjustments are made, the safety reversal system MUST be tested. Without a properly installed safety reversal system, persons (particularly small children) could be set properly. The LED will stop flashing when the force has been programmed. Push the door control or programmed remote control. If the garage door opener cannot open (UP...

3850 Elite Series Manual - Page 26

... this feature may also need adjustment. 10. READ AND FOLLOW ALL WARNINGS AND INSTRUCTIONS. 2. ALWAYS disconnect electric power to move. • The Wall-Mounted Door Control: Hold the push button or bar down until the door starts to garage door opener BEFORE making ANY repairs or removing covers. 15. If rope knot becomes untied, you activate...

3850 Elite Series Manual - Page 29

...unit is operating on battery power and that the battery charge is low. • To test the battery is functioning properly, open and close the garage door. • Re-...battery is fully charged. • A flashing LED indicates the battery is indicated by a beep sounding every 30 seconds, replace the battery. • To obtain maximum battery life and prevent damage, also disconnect the battery...

3850 Elite Series Manual - Page 30

... hinges. To reconnect the door to disengage trolley ONLY when garage door is clear of Your Opener MAINTENANCE SCHEDULE Once a Month • Manually operate door. To disengage the lockout feature, pull the handle straight down and back (toward the opener). The door should be fully closed . Pull the emergency release handle down . MANUAL DISCONNECT POSITION Trolley Release Arm...

3850 Elite Series Manual - Page 31

... the trolley re-engages with beep, sounding every 30 seconds, indicates battery is accompanied by adjusting the outer nut 4 to the Diagnostic Chart on the following the programming instructions. My garage door opener beeps: • A solid LED with a security light feature. My door reverses for the force and limit settings is equipped with beep, sounding...

3850 Elite Series Manual - Page 32

... Located On Motor Unit "Learn" Button LED or Diagnostic LED "Learn" Button Installed Safety Reversing Sensor Your garage door opener is programmed with jumper wire. Consult Diagnostic Chart below. 1 FLASH Safety reversing sensors wire open (broken or disconnected). Symptom: One or both of the Indicator lights on the safety reversing sensors do not light, replace...

3850 Elite Series Manual - Page 38

...) For safety reversing sensor installation onto the wall or floor. 374LM 377LM SECURITY✚® Keyless Entry : Enables homeowner to the garage door opener. SECURITY✚® 4-Button Remote Control : Includes visor clip. Includes battery. Tells you if your home! This temporary password can add a temporary password for a garage with model 3850 only. Enables homeowner to...