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Question posted by doninqm on March 5th, 2014

Liftmaster Backup Battery.how Do I Replace The 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. ■ The door...

3850 Elite Series Manual - Page 2

...INTRODUCTION Safety Symbol and Signal Word Review This garage door opener has been designed and tested to offer ...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...

3850 Elite Series Manual - Page 3

...; Disable ALL locks and remove ALL ropes connected to garage door BEFORE installing and operating garage door opener to avoid entanglement. Release the door. If your garage door is balanced and is any binding or sticking. Preparing your garage door Before you begin: • Disable locks. • Remove any ropes connected to garage door. • Complete the following test to make sure...

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... check the packing material. Carton Inventory Your garage door opener is packaged in the foam. Parts may be stuck in two cartons...

3850 Elite Series Manual - Page 6

...on the threaded shaft until it firmly against the trolley (Figure 2). • Place a 7/16" open end wrench on the square end. Figure 1 Trolley Nut Ring Trolley Nut Ring Figure 3 BEFORE ...the Rail to the Motor Unit To avoid installation difficulties, do not run the garage door opener until instructed to door opener. • Position belt over belt pulley. Cut tape from rail, chain and...

3850 Elite Series Manual - Page 7

... feet (1.5 m). • away from electrocution, disconnect ALL electric and battery power BEFORE performing ANY service or maintenance. 7 Door MUST reverse on contact with a 1-1/2" (3.8 cm) high object (or a 2x4 laid flat) on properly balanced and lubricated garage door. ALL repairs to do so. 8. NEVER connect garage door opener to power source until instructed to cables, spring assemblies and...

3850 Elite Series Manual - Page 11

.... INSTALLATION STEP 4 Position the Opener Follow instructions which apply to your door type as a support, raise the top of the opener to this height. • The top of the door should be level with the top of the motor unit. Rail Door 2x4 is convenient for setting an ideal door-to garage door, rest garage door opener rail on 2x4 placed...

3850 Elite Series Manual - Page 12

... 5/16"-18x7/8" hex bolts, lock washers and nuts. 6. FINISHED CEILING - On finished ceilings (Figure 2 and Figure 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 motor unit to a support with rail grease. Hanging brackets should be different. Cut...

3850 Elite Series Manual - Page 13

... standard installations ONLY) Run bell wire up wall and across ceiling to each garage door opener. If installing into gang box) as follows: • Install bottom screw, allowing 1/8" (3 mm)... Insulated Staples Screw 6-32x1" (pre-wired) Drywall Anchors Figure 1 REMOVE COVER REPLACE COVER To Replace Insert Top Tabs First PRE-WIRED INSTALLATION LOCK LIGHT LOCK LIGHT Push Bar Cover ...

3850 Elite Series Manual - Page 14

... ONLY incandescent. To prevent damage to close the lens. • Use A19, standard neck garage door opener bulbs for approximately 4-1/2 minutes when power is connected. ALWAYS wear protective gloves and eye protection when changing the battery or working around the battery compartment. Light bulb size should be A19, standard neck only. NOTE: Use only standard...

3850 Elite Series Manual - Page 15

...open door falling rapidly and/or unexpectedly. • NEVER use emergency release handle unless garage doorway is 6 feet (1.8 m) above the floor. Be sure the opener is required by your garage door opener...electrocution or fire: • Disconnect ALL electric and battery power BEFORE performing ANY service or maintenance. • Garage door installation and wiring MUST be grounded. • ...

3850 Elite Series Manual - Page 16

.... The invisible light beam path must be installed on the wall, the brackets must be connected and aligned correctly before the garage door opener will move in masonry construction, add a piece of sectional garage doors without additional hardware. above the floor. If installing in the down direction. Safety Reversing Sensor 6" (15 cm) max. The units...

3850 Elite Series Manual - Page 24

... 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. If the garage door opener cannot open (UP). 4. Push the purple button twice to enter into Force Adjustment Mode LED Black Button Purple Button Figure 3 or LOCK...

3850 Elite Series Manual - Page 25

... either sensor is not traveling far enough in the down direction. Without a properly installed safety reversal system, persons (particularly small children) could be tested. The garage door opener will flash. The door must reverse on the obstruction, it is off (alerting you to fail the Safety Reverse Test, call for a trained...

3850 Elite Series Manual - Page 26

...a partially open , the door will close the door with garage door control push buttons or remote controls. 3. When the opener is 100 watts maximum. If open door falling rapidly and/or unexpectedly, causing SEVERE INJURY or DEATH. 7. when power is clear of children. ALWAYS KEEP GARAGE DOOR PROPERLY BALANCED (see page 3). NEVER permit children to garage door opener BEFORE making...

3850 Elite Series Manual - Page 31

...; 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 approximately 1-1/4" (3.18 cm) in particular can affect door travel limits. My door will not close and the light bulbs blink on my motor unit: The safety reversing sensor...

3850 Elite Series Manual - Page 32

... or Diagnostic LED "Learn" Button Installed Safety Reversing Sensor Your garage door opener is dim or flashing. • Realign receiving eye sensor, clean lens and secure brackets. See Adjustment section. • If the motor unit continues to be replaced. 32 If motor unit activates, replace door control wires. Symptom: No movement, motor runs 2-3 seconds. • Reconnect...

3850 Elite Series Manual - Page 34

... to confirm Learn Mode. 3. If light bulbs are not installed, two clicks will open and close when you wish to operate your garage door. 3. Your garage door opener has already been programmed at the factory to operate with your opener to operate with your garage door. The learn " button on any unwanted remote, first erase all codes: Press and...

3850 Elite Series Manual - Page 35

... will blink once when the PIN has been learned. To clear the temporary password, repeat steps 1-3, setting the number of your garage door opener. The keypad will work , press the number of hours (up one button close is active. Press the PROG button on motor unit. LOCK LIGHT 3. The ...

3850 Elite Series Manual - Page 38

Enables homeowner to protect LiftMaster® garage door openers against damage from outside by adding additional sensor modules. 485LM 395LM Remote Light Control : Enables homeowner to operate garage door opener from lightning and power surges. 38 This temporary password can add a temporary password for visitors or service persons. Wireless Door Control: Push bar, light feature ...