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Question posted by tpkh on October 23rd, 2013

How To Replace Liftmaster Stand By 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

... 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 opener 30 Having a problem? (Troubleshooting 31 Diagnostic chart 32 Smart...

3850 Elite Series Manual - Page 3

... to garage door BEFORE installing and operating garage door opener to loosen, move or adjust garage door, door springs, cables, pulleys, brackets or their hardware, ALL of balance. Sectional Door One-Piece Door Tools needed During assembly, installation and adjustment of the opener, instructions will call a trained door systems technician. To prevent damage to garage door and opener: •...

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...Grease Carriage Bolt 1/4"-20x1/2" (2) Wing Nut 1/4"-20 (2) 5 Carton Inventory Your garage door opener is packaged in the foam.

3850 Elite Series Manual - Page 6

... bolts will cause serious damage to door opener. • Position belt over belt pulley. To avoid SERIOUS damage to do not run the garage door opener until instructed to opener, ONLY use any tools. •...about 1/4 turn until it firmly against the trolley (Figure 2). • Place a 7/16" open end wrench on the threaded shaft until the spring releases and snaps the nut ring against the ...

3850 Elite Series Manual - Page 7

... of 5 feet (1.5 m). • away from electrocution, disconnect ALL electric and battery power BEFORE performing ANY service or maintenance. 7 An improperly balanced door may not reverse when required and could be made by a trained door systems technician BEFORE installing opener. 4. Install garage door opener 7 feet (2.1 m) or more above floor. 7. ASSEMBLY STEP 3 Attach the Belt...

3850 Elite Series Manual - Page 11

... top of the motor unit. Do not position the opener more than 4" (10 cm) above this point if the ladder is used 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 completed. You...

3850 Elite Series Manual - Page 12

Remove foam packaging. Measure the distance from a falling garage door opener, fasten it SECURELY to required lengths. 3. Drill 3/16" pilot holes in line with rail grease. Fasten the opener to the structural support. 2. Attach one end of the motor unit to the hanging brackets with 5/16"-18x1-7/8" lag screws. 5. Remove the 2x4. Hanging brackets ...

3850 Elite Series Manual - Page 13

.... • Replace cover by gently prying at a minimum height of 5 feet (1.5 m) where small children cannot reach, away from moving parts of door. • NEVER permit children to operate or play with door control push buttons or remote controls. • Activate door ONLY when it can be seen clearly, is recommended to each garage door opener. Adjust screw...

3850 Elite Series Manual - Page 14

... the lens. • Use A19, standard neck garage door opener bulbs for approximately 4-1/2 minutes when power is connected. To prevent damage to the opener: • DO NOT use bulbs larger than 100W. • ONLY use halogen bulbs. The lights will turn ON and remain lit for replacement. To prevent possible OVERHEATING of short neck or...

3850 Elite Series Manual - Page 15

... the rope through the hole in the top of electric shock, your garage door opener has a grounding type plug with an overhand knot. INSTALLATION STEP 9 ...battery power BEFORE performing ANY service or maintenance. • Garage door installation and wiring MUST be grounded. • Reinstall the cover. To reduce the risk of the red handle so "NOTICE" reads right side up as shown. The opener...

3850 Elite Series Manual - Page 16

... align the safety reversing sensor. To prevent SERIOUS INJURY or DEATH from inside the garage so that the sending and receiving eyes face each location to the garage door opener BEFORE installing the safety reversing sensor. No part of the garage door (or door tracks, springs, hinges, rollers or other hardware) may interrupt the beam while the...

3850 Elite Series Manual - Page 24

... Purple Button Figure 2 Push Purple button twice to enter into Force Adjustment Mode LED Black Button Purple Button Figure 3 or LOCK LIGHT 24 If the door is not stopping exactly where you would like it is balanced properly and is not sticking or binding. If the garage door opener cannot open (UP). 4.

3850 Elite Series Manual - Page 25

... a 1-1/2" (3.8 cm) board (or a 2x4 laid flat) on striking the obstruction. The garage door opener will flash. ADJUSTMENT STEP 3 Test the Safety Reversal System TEST • With the door fully open the door. • Place the opener carton in the down direction. If the opener closes the door when the safety reversing sensor is off (alerting you to close from...

3850 Elite Series Manual - Page 26

... repairs to cables, spring assemblies and other control may not reverse when required and could fall. 9. Using Your Garage Door Opener Your Security✚® opener and hand-held remote. If closed . If fully open, the door will open position, it must be tested every month. If the sensor is not installed, or is 100 watts maximum...

3850 Elite Series Manual - Page 31

... sounding every 30 seconds, replace the battery. 31 If the trolley re-engages with a security light feature. The need for occasional adjustment for Using the Door Control. • Reprogram ...battery. • A flashing 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...

3850 Elite Series Manual - Page 32

... may need to travel 2-3 inches, check the travel module connection or replace the travel module. 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 dim or flashing. • Realign receiving eye sensor, clean lens...

3850 Elite Series Manual - Page 34

...codes are not installed, two clicks will be programmed to operate other Security✚® garage door openers. 34 Press the PROG button on any unwanted remote, first erase all codes: Press...learned the code. The learn indicator light will glow steadily for programming your garage door opener, the large button is operated with additional 315 MHz Security✚® remote controls...

3850 Elite Series Manual - Page 35

... when the one button close is deactivated. 35 OR 3. To activate or deactivate this temporary PIN expires and will work , press the number of your garage door opener. The keypad will be heard. 2. To set a temporary PIN You may be closed by visitors or service people with a temporary 4-digit PIN. To clear the...

3850 Elite Series Manual - Page 38

... For use with NO access door. Includes battery. Laser Park Assist: Laser enables homeowners to protect LiftMaster® garage door openers against damage from car, bedside, or anywhere in the garage. Enables homeowner to the garage door opener. This temporary password can add a temporary password for the largest door of your garage door is designed to precisely park vehicles...