Switch for Myford ML7

No diagram inside the lid ? That's where they often put them.

failing that some decent photos and many here can work the connections out.

Usually simple, L1 and L2 for live and neutral and U &V for the motor leads.

If that doesn't work then use L1 and L3 and U & W

Hi Charlene,

I have uploaded a diagam of this starter to help my explanation. The diagram shows the 3 phase configuration with overload unit but the single phase version is a small variation. The supply should be connected as follows Live (brown) to 5L3 and Neutral (Blue) to 1L1. Connect the motor live to 6T3 and the neutral to 4T2 on the overload unit, insert a wire from 2T1 to 3L2. Connect the two free wires that have tinned ends to terminals 95 and 96. Check that the thin wire of the two free ends is connected to coil terminal A2. Check or insert a wire from 1L1 to coil terminal A1. The two most important wires are the earths, these must be connected together and an earth point is usually provided in the starter.

If you do not want the overload unit connect the motor live to 6T3 and the motor neutral to 2T1, the link from 2T1 to 3L2 will not be required remove the thick free ended wire from the red button and insert the free end of the thin free ended wire.

If you wish to use a remote stop button move the wire that comes from terminal 14 on the contactor from the red button to the bottom of the green button, remove the short link from the red to green buttons and wire the two leads from the remote stop one to the bottom connection of the green button and the other to the top connection of the red button.

I would advise you to have your handiwork checked by a competant person.

Mike

Well I guess that's you sorted then Charlene -and useful info to file - thanks Mike.

Kwill and Co. - "It is a Palace of Engineering, not for working in! " Well sorry - it was just a pic I took for the other thread and I used that rather than go out and take one of the starter switch.

Having managed in several rather pokey, untidy, cold and damp workshops previously and then moving to a place with a double garage I determined to make a dry and comfortable place to "play" in my retirement. I enjoyed the conversion work but, like Topsy, it growed!! If you look at the pic in my album of the other half of the garage then the usual state of my workshop is somewhere between the two!

My criteria for a workshop is that it must be pleasant to go into, it must be dry and possible to heat economically. Tools must be easily found and, for safety, the space on and around machines must be clear. My interest is in the smaller end of engineering so keeping it fairly tidy also avoids losing bits!

So Bill post your pictures  it's always interesting to see how others are set up and ideas can often be gained.

In the end though the important bit is not the workshop but what comes out of it. I make no claim to any great achievement in this area - but I do enjoy trying. ( And in some degree of comfort!)

Regards to All

Norman

Edited By NJH on 08/10/2012 14:02:57

Hi Charly,
It is difficult to see from the photograph where the wires at the top go to. Can you confirm (Or correct.) my understanding of the wiring from my interpritation of the picture.

1 The start button is in parallel with the contacts 13no and 14no

2 There is a second wire connected to terminal 13no which is one end of the coil.

3 The wire end in the middle of the bottom of the box is the other end of the coil.

4 There are no wires connected to terminals 1L1, 3L2, 5L3, 2T1, 4T2 and 6T3

5 The "T" shaped piece of metal to the right of terminal 14no is not connected to anything.

****** IF I HAVE INTERPRETED THE CONNECTIONS CORRECTLY *****

Connect the incoming neutral to 1L1 and connect the wire that is at the middle bottom of the box to 1L1
Connect the incoming live to 3L2 and connect the wire from the bottom terminal of the stop button to 3L2 (You may need a longer piece of wire.)

Connect the motor neutral to 2T1
Connect the motor live to 4T2

The "T" shaped metal plate is probably for joining the incoming earth to the motor earth.

If you are not 100% sure DO NOT PROCEED

EDIT   I see that Mike has beat me to it with his reply. (I was called for lunch before I finished typing.)
As Mike's reply contains a diagram it will probably be clearer to follow his instructions.

Les.

Edited By Les Jones 1 on 08/10/2012 14:46:53

Hi guys,

Thanks so much for all the explanations on the wiring. I really appreciate all the effort. I will definitely have it checked out by someone before I attempt to switch it on.

Charlene