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LiftMaster 3850 Support Question

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Question posted by szenov on November 2nd, 2013

If You Take Out The Back Up Battery On A Elite 3850 Garage Door Opener, It Will

still operate when the electric is on won't it. i have a low back up 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. ■...

3850 Elite Series Manual - Page 2

... 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 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 your garage door and/or the garage door opener if you do not...

3850 Elite Series Manual - Page 3

..., 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. Preparing your garage door Before you begin: • Disable locks. • Remove any binding or sticking. If balanced, it should stay in place, supported entirely...

3850 Elite Series Manual - Page 5

Accessories will depend on the model purchased. Carton Inventory Your garage door opener is packaged in the foam. LOCK LIGHT SLmCaDrtMCootniotrnolDPeatencetli®ng Door Control Console SECURITY✚® 3-Button Remote Control Models 3850 (1) 3850-267 (2) SECURITY✚® Keyless Entry Model 3850-267 (1) ONLY Motor Unit with Light Lenses 2-Conductor Bell Wire White & White...

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 ... motor unit. Use only these bolts! This extends the spring for optimum belt tension. To avoid SERIOUS damage to door opener. • Position belt over belt pulley. Figure 1 Trolley Nut Ring Trolley Nut Ring Figure 3 BEFORE 1" (2.5...

3850 Elite Series Manual - Page 7

... source until instructed to the installation section. To avoid SERIOUS PERSONAL INJURY or DEATH from ALL moving garage door opener: • ALWAYS keep hand clear of belt pulley while operating opener. • SECURELY attach belt pulley cover BEFORE operating. 8x3/8" Hex Screws HARDWARE SHOWN ACTUAL SIZE Hex Screw #8x3/8" WARNING Belt Cap Retainer Motor Unit Belt...

3850 Elite Series Manual - Page 11

...unit. ENGAGED Trolley Release Arm RELEASED ONE-PIECE DOOR WITHOUT TRACK • With the door fully open and parallel to the floor, measure the distance from the floor...door-to 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 the opener to this point. Rail Door 2x4 is not tall enough. • Open the door...

3850 Elite Series Manual - Page 12

... 3), attach a sturdy metal bracket to opener at this time. Measure the distance from a falling garage door opener, fasten it SECURELY to structural supports of the garage. Attach one end of the hanging bracket... 6. Drill 3/16" pilot holes in line with 5/16"-18x1-7/8" lag screws. 5. Operate the door manually. Grease the top and underside of the motor unit to a support with the header...

3850 Elite Series Manual - Page 13

..., is properly adjusted and there are desired to operate the same garage door opener, it may damage the LCD screen. Adjust screw for snug fit. • Drill and install top screw with a staple, creating a short or open position but will not return to door travel. • ALWAYS keep garage door in tabpwusithhisnctraebwwdritivher tip screwdriver tip Antenna Red White...

3850 Elite Series Manual - Page 14

... Lights • Press the release tabs on battery. • Verify the battery wires are seated in each socket. Light bulb size should be A19, standard neck only. 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...

3850 Elite Series Manual - Page 15

... ALL electric and battery power BEFORE performing ANY service or maintenance. • Garage door installation and wiring MUST be grounded. • Reinstall the cover. To reduce the risk of electric shock, your local code, refer to the following procedure. NOTE: If it fit outlet. Weak or broken springs or unbalanced door could fall. Be sure the opener...

3850 Elite Series Manual - Page 16

... and aligned, the sensor will flash 10 times. Either can be installed on the wall, the brackets must be connected and aligned correctly before the garage door opener will move in the down direction. above garage floor. The mounting brackets are available if needed. The invisible light beam path must be installed inside the...

3850 Elite Series Manual - Page 24

... operation of force required to enter unit into the Force Adjustment Mode. The door must travel through a complete cycle, up and down, in order for a binding or sticking garage door. • After ANY adjustments are made, the safety reversal system MUST be set properly. Push the door control or programmed remote control again. If the garage door opener...

3850 Elite Series Manual - Page 25

... on the floor, centered under the garage door. • Operate the door in the path of the opener. The door will not move more than 1" (2.5 cm), and the opener lights will not close the door. The door must reverse on the obstruction, it is misaligned or obstructed). ADJUST • If the door stops on striking the obstruction. The garage door opener will flash.

3850 Elite Series Manual - Page 26

... operate or play with each use, randomly accessing over 100 billion new codes. ONLY activate garage door when it can close . NO ONE SHOULD CROSS THE PATH OF THE MOVING DOOR. 5. If one Security✚® Keyless Entry System. Failure to door travel. 4. ALWAYS disconnect electric power to deactivate any of the following conditions: when the opener...

3850 Elite Series Manual - Page 31

... is restored, and is operating off when door is open: • The garage door opener is normal. Weather conditions in the down travel . • Refer to the Diagnostic Chart on when the safety reversing sensor beam has been obstructed. My garage door opener beeps: • A solid LED with beep, sounding every 30 seconds, indicates battery is low. • If a red LED...

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 programmed with jumper wire. Symptom: One or both of the Indicator lights on the safety reversing sensors do not light, replace the safety reversing ...

3850 Elite Series Manual - Page 34

... of the copyright in the receiver of the non-rolling code remote control to circumvent that you wish to operate your garage door. Your garage door opener has already been programmed at the factory to operate with your garage door. 3. The learn " button on the hand-held remote* that technical measure. If light bulbs are not installed, two clicks...

3850 Elite Series Manual - Page 35

...NOTE: Your new Keyless Entry must be programmed to operate your choice on the keypad. USING THE "LEARN" BUTTON USING THE DOOR CONTROL LOCK LIGHT 1. The learn " button on ...button if the one opening. Enter a four digit personal identification number (PIN) of your garage door opener. Press the four buttons for your choice on the door control. 2. The opener light will blink ...

3850 Elite Series Manual - Page 38

... or floor. 374LM 377LM SECURITY✚® Keyless Entry : Enables homeowner to operate garage door opener from outside by adding additional sensor modules. 485LM 395LM Remote Light Control : Enables homeowner to protect LiftMaster® garage door openers against damage from car, bedside, or anywhere in the garage. Also can be limited to a programmable number of hours or entries...