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LiftMaster 3850 Support Question

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Question posted by robeDARKW on May 24th, 2014

How To Replace Motor On Model 3850 Garage Door?

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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

... Entry PIN 35 Repair Parts 36-37 Rail assembly parts 36 Installation parts 36 Motor unit assembly parts 37 Accessories 38 Notes 39 Repair Parts and Service 40 Warranty 40 INTRODUCTION Safety Symbol and Signal Word Review This garage door opener has been designed and tested to offer safe service provided it is installed...

3850 Elite Series Manual - Page 3

... adjustment 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 make sure your garage door is balanced and is out of balance. Preparing your garage door Before you begin: • Disable locks. • Remove any binding or sticking. To prevent possible SERIOUS...

3850 Elite Series Manual - Page 5

...missing, carefully check the packing material. 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

...motor unit. • Align rail and styrofoam over the motor unit belt pulley. To avoid SERIOUS damage to do not run the garage door opener until instructed to opener, ONLY use any other bolts will cause serious damage to door opener... tight against the trolley (Figure 2). • Place a 7/16" open end wrench on top of motor unit. Cut tape from rail, chain and styrofoam. • REMOVE ...

3850 Elite Series Manual - Page 7

... minimum height of 5 feet (1.5 m). • away 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 Pulley Mounting Plate WARNING INSTALLATION IMPORTANT INSTALLATION...

3850 Elite Series Manual - Page 11

... instructions which apply to garage door, rest garage door opener rail on 2x4 placed on the trolley release arm to determine the correct mounting height from ceiling. Do not position the opener more than 4" (10 cm) above this point if the ladder is completed. Header Bracket Top of Motor Unit Top of Door 2x4 is convenient for setting...

3850 Elite Series Manual - Page 12

... used if installing ANY brackets into masonry. Measure the distance from a falling garage door opener, fasten it SECURELY to structural supports of the motor unit to a support with 5/16"-18x7/8" hex bolts, lock washers and nuts. 6. Remove the 2x4. Operate the door manually. HARDWARE SHOWN ACTUAL SIZE To avoid possible SERIOUS INJURY from each bracket...

3850 Elite Series Manual - Page 13

... controls are no obstructions to door travel to motor unit. Fasten with care to cross path of closing garage door: • Install door control within sight of door, at a minimum height of...garage door opener. DO NOT overtighten. • Replace cover by gently prying at the lower/middle portion of the cover with door control push buttons or remote controls. • Activate door...

3850 Elite Series Manual - Page 14

... the red (+) and black (-) wires from motor unit to close the lens. • Use A19, standard neck garage door opener bulbs for approximately 4-1/2 minutes when power is in the fully open position. Do not remove the lens. • Install a 100 watt maximum light bulb in the channel. • Replace battery cover. Use ONLY incandescent. Gently rotate...

3850 Elite Series Manual - Page 15

...Garage door installation and wiring MUST be grounded. • Reinstall the cover. INSTALLATION STEP 9 Attach the Emergency Release Rope and Handle • Thread one end of the rope through the 7/8" (2 cm) hole in the top of the motor unit: • Remove the motor...when garage door is required by your garage door opener has a grounding type plug with an overhand knot. Be sure the opener is...

3850 Elite Series Manual - Page 16

... reverse to the receiving eye (with a green indicator light). Safety Reversing Sensor 6" (15 cm) max. The units must be connected and aligned correctly before the garage door opener will flash 10 times. The invisible light beam path must be securely fastened to a solid surface such as the sun never shines directly into the...

3850 Elite Series Manual - Page 23

... reversal system, persons (particularly small children) could be tested. Push and hold the purple button until the door reaches the desired UP (open door provides adequate clearance. NOTE: Make sure the door opens high enough for a binding or sticking garage door. • After ANY adjustments are made, the safety reversal system MUST be SERIOUSLY INJURED or KILLED...

3850 Elite Series Manual - Page 25

... Limits and Set the Force. NOTE: On a sectional door, make sure limit adjustments do not force the door arm beyond a straight up and down direction. If the opener closes the door when the safety reversing sensor is not traveling far enough in the down direction. The garage door opener will flash. Without a properly installed safety reversing sensor...

3850 Elite Series Manual - Page 31

... properly installed, aligned and free of the 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 is accompanied by adjusting the outer nut 4 to the Diagnostic Chart on when the safety reversing sensor beam has...

3850 Elite Series Manual - Page 32

... if the indicator lights glow replace the wires for a short (staple in wire), replace as needed . • Disconnect wires at door control, touch wires together. ...open (broken or disconnected). 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...

3850 Elite Series Manual - Page 34

... are instructions for 30 seconds. 2. Additional buttons on motor unit until the learn indicator light goes out (approximately 6 seconds). PROGRAMMING NOTICE: If this Security✚® garage door opener is factory programmed to operate it has learned the code. Press the PROG button again to operate your garage door opener, the large button is operated with a non...

3850 Elite Series Manual - Page 35

... buttons 1 and 9 for your garage door opener. NOTE: This method requires two people if the Keyless Entry is known, it has learned the code. Press the PROG button on motor unit. Release the button when the motor unit lights blink. The motor unit lights will blink four times. 3. The door should move . The opener light will blink once...

3850 Elite Series Manual - Page 38

... sensor installation onto the wall or floor. 374LM 377LM SECURITY✚® Keyless Entry : Enables homeowner to the garage door opener. SECURITY✚® 4-Button Remote Control : Includes visor clip. Wireless Door Control: Push bar, light feature and auxiliary button. Includes battery. ACCESSORIES 1702LM Outside Quick Release: Required for a garage with model 3850 only.

3850 Elite Series Manual - Page 40

...9131 LIFTMASTER FIVE YEAR LIMITED WARRANTY LIFETIME MOTOR AND BELT LIMITED WARRANTY ONE YEAR LIMITED...THE GARAGE DOOR OR GARAGE DOOR HARDWARE, INCLUDING BUT NOT LIMITED TO THE DOOR SPRINGS, DOOR ROLLERS, DOOR ALIGNMENT ... NUMBER • PART NAME • MODEL NUMBER ADDRESS ORDERS TO: THE CHAMBERLAIN GROUP... FOR REINSTALLING A REPAIRED OR REPLACED UNIT, REPLACEMENT OF BATTERIES IN REMOTE CONTROL ...