Question about Sears Craftsman LiftMaster Chamberlain Garage Door Opener Wireless Keypad Model 976LM Security+

5 Answers

Programing limits on a Grifco MK3 Garage door Operator

I have problems with a garage door opener:
PE's dont work, I think it is not set up.
I need to program auto close

The door is new and not set up properly.

The reciever board has 2 x 8 dip switches

Posted by on

  • jody_goldswo Nov 21, 2008

    I need a manual for a Grifco Garage door opener Model MCBL101

  • Anonymous Mar 24, 2014

    I need to locate the dip switches on a roller garage door opener so that I can program an new remote.

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5 Answers

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You can get manual from the link below

Garage door

Posted on Nov 21, 2008

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Your safety reversing sensor must be connected and aligned correctly before the garage door opener will close. An obstruction in the path of the sensor will also cause your door to not close.
This sensor is an electronic beam, which is sent between two sending and receiving “eyes”. These eyes face each other and are located just inside your garage door. They may need to be adjusted so the beam from the sending eye is properly detected by the receiving eye. Once the receiving eye “sees” the beam from the sending eye, a green indicator light will glow on the top of the eye.

Posted on Nov 21, 2008

  • taran_2005
    taran_2005 Nov 21, 2008

    There might be many other reasons like :-




    • Check limit travel adjustment first.
    • Limit contacts not operating. Remove cover and manually observe the switch actuator. Check continuity of contacts. Possible bad assembly.
    • Check gear and sprocket assembly for wear. Check shaft for play or wobble. Worn assembly can cause unit to go out of sync.



    However, More likely u wld be able to fix this issue if u follow my first adviz.........



    *******************************24/7 assistance*********************************

  • taran_2005
    taran_2005 Nov 21, 2008

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It has the "Protector System" (safety sensors). chec the sensor indicator light on the receivinng eye the green light had a slight flicker.cleaned both the sending eye and receiving eye lens of dust and cob webs, then realigned the receiving sensor for a steady green indicator light. then check the door function it now works fine.over time, temperature, and viberation the sensors become dirty and get out of alignment, as no one had tampered with the sensor alignment prior to this. Hope this works for you.

Posted on Nov 21, 2008

  • mohammed marika thambi
    mohammed marika thambi Nov 21, 2008

    .IF YOU HAVE A SIDE DOOR TO YOUR GARAGE, ENTER THAT WAY...
    THEN TAKE THE LIGHT CAPS OFF YOUR GARAGE DOOR OPENER AND PRESS THE
    RESET BUTTON...ONCE YOU PRESS IT, GO TO THE REMOTE THAT IS MOUNTED ON
    THE SIDE OF THE GARAGE DOOR AND PUSH IN A CODE... FOR EXAMPLE 2345 THEN
    PRESS ENTER.....MAKE SURE YOU PRESS ENTER AFTER YOU PRESS THE CODE
    IN.... HINT, RELEASE THE GARAGE DOOR FROM THE OPENER SO IT WILL BE
    EASIER FOR YOU TO RESET THE CODE....AND DON'T FORGET, DO SOMETHING
    ABOUT YOUR KIDS

  • mohammed marika thambi
    mohammed marika thambi Nov 21, 2008

    https://shop-foley-belsaw.com/foley/KEYL...

    or this
    http://www.columbussupply.com/products/?...


    or call one of the door unlock services - they probably have the tool (ask when calling!)


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The manual link has been posted for you but know that the DIP switches need only match your remote.

Posted on Nov 21, 2008

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Go to the link and try manual to install ---
http://www.aaadooropeners.com/codinginstr/976LM%20coding%20instructions.htm

Posted on Nov 21, 2008

  • futureloginn
    futureloginn Nov 21, 2008

    Thanks


  • futureloginn
    futureloginn Nov 21, 2008

    ok go to link=
    http://www.grifco.com.au/

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Check the up and down force: 
On your operator (the box that hangs from the ceiling). If the light bulb(s) on your operator are on the front and/or back, the force adjustment screw is on the back of the operator. If the lights are on the sides of the operator then the force adjustment screw is on the right side (looking from the back of the operator and facing the garage door). Turn the light blue adjustment screw with the up arrow to a higher number.


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If you have a Chraftsman/Liftmaster check the down limit:
 If the light bulb(s) on your operator are on the front and/or back, the limit adjustment screw is on the left side of the operator (looking from the back of the operator and facing  the garage door).. If the lights are on the sides of the operator then the limit adjustment screw is on the left side (looking from the back of the operator and facing  the garage door).
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You need to press and release the learn botton (don't hold it or you will clear all the codes)
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