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The Chamberlain Group, Inc.
845 Larch Avenue
Elmhurst, Illinois 60126-1196
www.LiftMaster.com

GARAGE DOOR OPENER

Model 3840

Owner’s Manual

  Please read this manual and the enclosed safety materials carefully!

  Fasten the manual near the garage door after installation.

   The door WILL NOT CLOSE unless the Protector System

®

 is connected 

and properly aligned.

  Periodic checks of the opener are required to ensure safe operation.

   The model number label is located under the light lens on the left side panel 

of your opener.

®

For Residential Use Only 

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Содержание ELITE 3840

Страница 1: ...ls carefully Fasten the manual near the garage door after installation The door WILL NOT CLOSE unless the Protector System is connected and properly aligned Periodic checks of the opener are required...

Страница 2: ...mote control 29 The remote control battery 29 Troubleshooting 29 Standby Power Optional 30 Having a problem 31 Diagnostic chart 32 33 Programming 34 35 To add or reprogram a hand held remote control 3...

Страница 3: ...lement Preparing your garage door Before you begin Disable locks Remove any ropes connected to garage door Complete the following test to make sure your garage door is balanced and is not sticking or...

Страница 4: ...t bracket fastening hardware is required See page 19 Safety Reversing Sensor Access Door Gap between floor and bottom of door must not exceed 1 4 6 mm Wall mounted Door Control Header Wall Motor Unit...

Страница 5: ...ns which contain the motor unit and all parts illustrated below Accessories will depend on the model purchased If anything is missing carefully check the packing material Parts may be stuck in the foa...

Страница 6: ...n Slip the coupling over the rail sprocket Slide the rail through the motor unit bracket until the coupling fits securely over the motor unit sprocket Align the two bolt holes in the rail with those i...

Страница 7: ...3 m above floor 7 NEVER connect garage door opener to power source until instructed to do so 8 NEVER wear watches rings or loose clothing while installing or servicing opener They could be caught in g...

Страница 8: ...the top edge of the door NOTE If the total number of inches exceeds the height available in your garage use the maximum height possible or refer to page 9 for ceiling installation To prevent possible...

Страница 9: ...P CEILING MOUNT ONLY Wall Mounting Holes Optional Wall Mounting Holes The nail hole is for positioning only You must use lag screws to mount the header bracket UP CEILING MOUNT ONLY Door Spring Header...

Страница 10: ...the old header bracket with the two plastic spacers included in the hardware bag Place the spacers inside the bracket on each side of the rail as illustrated Position the opener on the garage floor be...

Страница 11: ...e designed to clip onto the track of sectional garage doors without additional hardware If it is necessary to mount the units on the wall the brackets must be securely fastened to a solid surface such...

Страница 12: ...into place against the side of the track It should lie flush with the lip hugging the back edge of the track as shown in Figure 1 If your door track will not support the bracket securely wall installa...

Страница 13: ...nses pointing toward each other across the door Be sure the lens is not obstructed by a bracket extension Figure 5 Finger tighten the wing nuts Recommended Wire Routing 1 Using insulated staples run t...

Страница 14: ...id flat is convenient for setting an ideal door to rail distance Raise the opener onto a stepladder You will need help at this point if the ladder is not tall enough Open the door all the way and plac...

Страница 15: ...line with the header bracket if the bracket is not centered above the door 7 Remove the 2x4 Operate the door manually If the door hits the rail raise the header bracket NOTE DO NOT connect power to o...

Страница 16: ...ensor wires along the top of the rail See page 13 4 Separate the white and red white wires Strip 7 16 11 mm of insulation from the end of the bell wires Twist like colored wires together Connect the b...

Страница 17: ...ing around the battery compartment INSTALLATION STEP 8 Install the Standby Power Optional Make sure motor unit is unplugged Using a Phillips head screwdriver remove the battery cover on the motor unit...

Страница 18: ...nsion cord 2 wire adapter or change plug in ANY way to make it fit outlet Be sure the opener is grounded Ground Tab Green Ground Screw Ground Wire Black Wire Wire Nuts PERMANENT WIRING CONNECTION Whit...

Страница 19: ...racket using the two 1 4 14x5 8 self threading screws Figure 2A Alternately use two 5 16 bolts lock washers and nuts not provided Figure 2B Metal insulated or light weight factory reinforced doors Dri...

Страница 20: ...INUM STEEL DOORS WITH GLASS PANEL ETC NOT PROVIDED ONE PIECE DOORS Please read and comply with the warnings and reinforcement instructions on the previous page They apply to one piece doors also Cente...

Страница 21: ...ion with a ring fastener Fasten curved section to the door bracket in the same way using the 5 16 x1 1 4 clevis pin Figure 2 Bring arm sections together Find two pairs of holes that line up and join s...

Страница 22: ...disconnecting the outer trolley from the inner trolley by pulling straight down on the emergency release handle and sliding the outer trolley back See Figure 5 Connect the curved door arm section to...

Страница 23: ...ere appears to be too much pressure on the door you may toggle the door back and forth using the black and purple buttons to reach the desired closed position 7 Push the door control or programmed rem...

Страница 24: ...DJUSTMENT STEP 2 Set the Force The force setting measures the amount of force required to open and close the door 1 Push the purple button twice to enter into the Force Adjustment Mode The LED will fl...

Страница 25: ...rce the door arm beyond a straight up and down position See Figure 3 page 21 Repeat the test When the door reverses on the 1 1 2 3 8 cm board or 2x4 laid flat remove the obstruction and run the opener...

Страница 26: ...ulb power is 100 watts maximum Security light feature Lights will also turn on when someone walks through the open garage door With a Smart Control Panel this feature may be turned off as follows With...

Страница 27: ...e the motion sensor when using the opener lights as working lights Otherwise they will turn off automatically if you are working beyond the sensors range Lock feature Designed to prevent operation of...

Страница 28: ...garage door is CLOSED Weak or broken springs or unbalanced door could result in an open door falling rapidly and or unexpectedly NEVER use emergency release handle unless garage doorway is clear of p...

Страница 29: ...c surface This allows the sensor to recalibrate itself Dim LED lights Replace two 3V2016 batteries with same type 3V2016 coin cells No rapid LED blinking after pressing a button Replace two 3V2016 bat...

Страница 30: ...loves and eye protection when changing the battery or working around the battery compartment Standby Power Optional OPERATING INSTRUCTIONS 1 Test the installed battery with the motor unit To test the...

Страница 31: ...to force or travel limits The need for occasional adjustment for the force and limit settings is normal Weather conditions in particular can affect door travel Manually check door for balance or any b...

Страница 32: ...ly short across red and white terminals with jumper wire If motor unit activates replace door control wires Symptom Sending indicator light glows steadily receiving indicator light is dim or flashing...

Страница 33: ...d replace attach as needed Disconnect all wires from back of motor unit Remove safety sensors from brackets and shorten sensor wires to 1 2 ft 30 60 cm from back of each sensor Reattach sending eye to...

Страница 34: ...nstalled two clicks will be heard To Add and Reprogram an Additional Hand held Remote Control USING THE LEARN BUTTON USING THE SMART CONTROL PANEL LOCK LIGHT LOCK LIGHT PROGRAMMING Your garage door op...

Страница 35: ...the last temporary PIN then press and hold the button The opener light will blink three times Release the button 2 Press the temporary 4 digit PIN you have chosen then press Enter The opener light wi...

Страница 36: ...ving and sending eyes with 3 feet 9 m 2 conductor bell wire 11 178B34 Straight door arm section 12 178B35 Curved door arm section 13 41A5266 1 Safety sensor brackets 2 14 485LM Battery NOT SHOWN 101D1...

Страница 37: ...position sensor 6 41C6551 Positioning sensor 7 41B0024 Drive belt 8 41DS002 2 Logic board KEY PART NO NO DESCRIPTION 9 41A6231 End panel 10 41C213 Transformer and Harness 11 31D504 20 Cover 12 41C22...

Страница 38: ...nning their fingerprint The sensor strip on the unit makes a numeric template of the fingerprint that is unique to that user The unit s memory can store up to ten fingerprints 377LM Garage Door Monito...

Страница 39: ...39 NOTES...

Страница 40: ...med to be defective and covered by this limited warranty will be repaired or replaced at Seller s sole option at no cost to you and returned pre paid Defective parts will be repaired or replaced with...

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