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Liftmaster 3240 Has No Power
While trying to pair a new remote the unit stopped working like it has blown a fuse. No power
(Posted by steve9800 10 years ago)
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J5011M operator came with a residential type radio receiver and I want to install a Liftmaster 423LM...
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Popular LiftMaster 3240 Manual Pages

3240 Manual - Page 1

® GARAGE DOOR OPENER Models The Chamberlain Group, Inc. 845 Larch Avenue Elmhurst, Illinois 60126-1196 www.liftmaster.com 3130M 1/3 HP For Residential Use Only 3240M 1/2 HP 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...
3240 Manual - Page 2

... control 31 To erase all codes 31 3-Button remotes 31 To add, reprogram or change a Keyless Entry PIN . . . . . 32 Repair Parts 33-34 Rail assembly parts 33 Installation parts 33 Motor unit assembly parts 34 Accessories 35 Repair Parts and Service Back page Warranty Back page INTRODUCTION Safety Symbol and Signal Word Review This garage door opener has been designed and tested...
3240 Manual - Page 3

...; ONLY operate garage door opener at 120V, 60 Hz to avoid entanglement. Preparing your garage door is balanced and is out of balance. Lift the door about halfway as illustrated below. Release the door. Sectional Door One-Piece Door Tools needed During assembly, installation and adjustment of the opener, instructions will call a trained door systems technician if garage door binds...
3240 Manual - Page 5

... in the foam. Carton Inventory Your garage door opener is also listed below . Parts may be stuck in two cartons which contain the motor unit and all parts illustrated below . If anything is missing, carefully check the packing material. Model 3240M Model 3130M Model 3240M (1) Model 3130M (1) Multi-Function Door Control Panel Lighted Door Control Button SECURITY✚® 3-Button...
3240 Manual - Page 6

...and lock nuts. HARDWARE SHOWN ACTUAL SIZE To aid in assembly and installation, replace the foam packing around the motor unit. Remove it facing correctly: ...Rail Sprocket Rail Assembly Foam Packaging Hex Bolts 1/4"-20x7/16" Release Arm Trolley 6 Rack To motor unit ASSEMBLY STEP 1 Fasten the Rail to the Motor Unit To avoid installation difficulties, do not run the garage door opener...
3240 Manual - Page 7

... from ALL moving parts of garage door. 12. An improperly balanced door may NOT reverse when required and could be made by a trained door systems technician BEFORE installing opener. 4. Upon completion of SEVERE INJURY or DEATH: 1. ALL repairs to garage door control. 11. NEVER wear watches, rings or loose clothing while installing or servicing opener. Mount emergency release...
3240 Manual - Page 11

... The invisible light beam path must be securely fastened to full open position, and the opener lights will stop and reverse to a solid surface such as the sun never shines directly into the receiving eye lens. above garage floor. No part of the door as long as the wall framing. This required safety device...
3240 Manual - Page 14

... will need help at this point if the ladder is convenient for setting an ideal door-to determine the correct mounting height from ceiling. 14 To prevent damage to garage door, rest garage door opener rail on 2x4 placed on its side is not tall enough. • Open the door all the way and place a 2x4 on top section of...
3240 Manual - Page 15

...bracket to make sure the rail is not centered above the door). 7. Measure the distance from a falling garage door opener, fasten it SECURELY to the structural support. 2. Attach one end ... 3 Lag Screws 5/16"-18x1-7/8" Bolt 5/16"-18x7/8" Lock Washer 5/16" Nut 5/16"-18 FINISHED CEILING (Not Provided) Bolt 5/16"-18x7/8" Lock Washer 5/16" Nut 5/16"-18 15 Operate the door manually.
3240 Manual - Page 16

... and across ceiling to 24 VOLT low voltage wires. Strip 7/16" (11 mm) of insulation from each set of garage door. Lighted door control: Fasten to wall with care to cross path of the rail. screws (drywall installation) or 6-32x1" machine screws (into drywall (Figure 1), drill 5/32" holes and use anchors provided. See page 13. 4. NEVER permit anyone...
3240 Manual - Page 17

.... The lights will turn ON and remain lit for replacement. Then the lights will turn OFF. • Reverse the procedure to prevent unraveling. NOTE: Use only standard light bulbs. Secure with a match or lighter to close the lens. • Use A19, standard neck garage door opener bulbs for approximately 4-1/2 minutes when power is CLOSED.
3240 Manual - Page 18

... the white or white/black wires. TROUBLESHOOTING THE SAFETY REVERSING SENSORS 1. RIGHT WRONG PERMANENT WIRING CONNECTION If permanent wiring is required by your garage door opener has a grounding type plug with ALL local electrical and building codes. • NEVER use an extension cord, 2-wire adapter, or change plug in ANY way to the green ground screw.
3240 Manual - Page 29

... force and limit settings is blinking, deactivate the Lock Mode following the instructions for flashes on the motor unit then refer to the Diagnostic Chart on my motor unit: The safety reversing sensor must be connected and aligned correctly before the garage door opener will move in the down limit adjustment screw clockwise. 29 This...
3240 Manual - Page 32

... for your garage door opener. Press the new 4-digit PIN you have chosen, then press ENTER. Test by visitors or service people with a temporary 4-digit PIN. Test by pressing the four buttons for 10 seconds. Then press and hold buttons 1 and 9 for the temporary PIN, then press ENTER. To set a temporary PIN: 1. The keypad will work...
3240 Manual - Page 35

... keyboard. SEND PASS READY ENROLL ENROLL FAIL RETRY Garage Door Monitor: Security for the largest door of your garage door is open garage door manually from outside by disengaging trolley. 371LM 373LM 59LM Outside Keylock: Operates the garage door automatically from the outside by entering a password on for visitors or service persons. Sensor can store up to a programmable...

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