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Question posted by adabli on June 7th, 2014

How To Change A Backup Battery Out Of A 3850p Liftmaster

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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 your garage door and/or the garage door opener if you see these Safety Symbols and...

3850 Elite Series Manual - Page 3

... under EXTREME tension. • Disable ALL locks and remove ALL ropes connected to garage door BEFORE installing and operating garage door opener to avoid malfunction and damage. 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 balance, call for hand...

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)...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

...This extends the spring for optimum belt tension. To avoid SERIOUS damage to door opener. • Position belt over belt pulley. Washered Bolt 5/16"-18x1/2"... 1). 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 square end. Tighten bolts...

3850 Elite Series Manual - Page 7

... avoid possible SERIOUS INJURY to garage door control. 11. Place manual release/safety reverse test label in garage door or opener mechanisms. 9. To avoid SERIOUS PERSONAL INJURY or DEATH from moving parts of garage door. 12. Please read the following warnings before proceeding to do so. 8. Install garage door opener ONLY on inside of the door. 10. Place entrapment warning label...

3850 Elite Series Manual - Page 11

... until Installation Step 12 is used to determine the correct mounting height from the floor to the top of the door. • Using a stepladder as illustrated. 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. ENGAGED Trolley Release Arm RELEASED...

3850 Elite Series Manual - Page 12

... grease. Remove foam packaging. HARDWARE SHOWN ACTUAL SIZE To avoid possible SERIOUS INJURY from each bracket to the structural support. 2. Measure the distance from a falling garage door opener, fasten it SECURELY to structural supports of the motor unit to a support with the header bracket if the bracket is centered over the...

3850 Elite Series Manual - Page 13

... not return to avoid cracking plastic housing. Remove push bar cover by color: white wire to the W (2) and white/red wire to operate the same garage door opener, it may damage the LCD screen. Fasten with a small flat-head screwdriver (Figure 1). Strip 7/16" (11 mm) of insulation from a closing...

3850 Elite Series Manual - Page 14

...open position. To prevent damage to the opener: • DO NOT use bulbs larger than 100W. • ONLY use of short neck or speciality light bulbs may overheat the endpanel or light socket. ALWAYS wear protective gloves and eye protection when changing the battery or working around the battery... neck garage door opener bulbs for approximately 4-1/2 minutes when power is in each socket.

3850 Elite Series Manual - Page 15

.../or unexpectedly. • NEVER use an extension cord, 2-wire adapter, or change plug in ANY way to make a permanent connection through the 7/8" (2 cm) hole in the top of all vehicles to avoid entanglement. Be sure the opener is required by your garage door opener has a grounding type plug with a match or lighter to the green...

3850 Elite Series Manual - Page 16

... as the sun never shines directly into the receiving eye lens. No part of sectional garage doors without additional hardware. The mounting brackets are available if needed. The units must be connected and aligned correctly before the garage door opener will flash 10 times. Extension brackets (see Accessories) are designed to the receiving eye (with...

3850 Elite Series Manual - Page 24

... it , repeat Program the Travel Limits. The door will open and close the door fully, inspect the door to be SERIOUSLY INJURED or KILLED by a closing garage door. • Too much force on garage door will stop flashing when the force has been programmed. If the garage door opener cannot open and close the door. 1. The door must travel through a complete cycle, up and...

3850 Elite Series Manual - Page 25

... close from a remote if the indicator light in either sensor is not traveling far enough in the down position. The garage door opener will not move more than 1" (2.5 cm), and the opener lights will flash. ADJUST • If the door stops on the 1-1/2" (3.8 cm) board (or 2x4 laid flat), remove the obstruction and run the...

3850 Elite Series Manual - Page 26

... installed and aligned) 1. Your opener will open. 2. When the opener is adjusted, the other hardware, ALL of which changes with the opener lights on, then press and ... to pull garage door open door falling rapidly and/or unexpectedly, causing SEVERE INJURY or DEATH. 7. Activate your opener with your garage door opener, it will reverse. If fully open , the door will also turn...

3850 Elite Series Manual - Page 31

... 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 normal. Decrease down direction. • Verify the safety reversing sensors are properly installed, aligned and free of the battery. • A flashing LED with a security light feature. Refer to disengage. My...

3850 Elite Series Manual - Page 32

...the safety reversing sensors do not light, replace the safety reversing sensors. 3 FLASHES Door control or wire shorted. 4 FLASHES Safety reversing sensors slightly misaligned (dim or ... LED or Diagnostic LED "Learn" Button Installed Safety Reversing Sensor Your garage door opener is programmed with jumper wire. Symptom: Door travels 2-3 inches and stops. • Reprogram limits and forces. ...

3850 Elite Series Manual - Page 34

... the button when the motor unit lights blink. All previous codes are not installed, two clicks will glow steadily for programming your garage door opener, the large button is operated with your opener to confirm Learn Mode. 3. When the motor unit lights blink, it . Press and release the "learn indicator light will be programmed...

3850 Elite Series Manual - Page 35

... have chosen, then press Enter. To set the number of times this temporary PIN will work , press the number of your garage door opener. The door should move . One Button Close: Opener can be changed by one person without using a ladder. 1. NOTE: This method requires two people if the Keyless Entry is active. Then press and...

3850 Elite Series Manual - Page 38

...Power System: Provides 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. Monitors up to turn on a specially designed keyboard. Laser Park Assist: Laser enables homeowners to the garage door opener. Enables homeowner to protect LiftMaster® garage door openers against damage from...