Member postings for Tom Walker 1

Hi John, thank you very much for that diagram, it will be a great help when the electrician comes, hopefully early this week.

Re the motor Tim, I sincerely hope I wont need yours, but its reassuring to know there is a good one available if it comes to that. Thanks for your offer.

Edited By Tom Walker 1 on 16/09/2020 21:49:22

Edited By Tom Walker 1 on 16/09/2020 21:50:53

Edited By Tom Walker 1 on 16/09/2020 21:52:47

Ah! Anyone got a spare one of Emgees switches?!

Sorry, I posted too quickly, I can see that it is Pole Change.

Just looking at Johns scan of the Brooks book.

Is my motor 2 speed (pole change) or 2 speed (dual wound).?

I presume from the red wiring diagram I posted, attached to my motor, that it is Pole Change, because of the linking together of A3, B3, and C3.

Thank you John, for taking the trouble. Much appreciated.

Tom.

Thank you very much indeed for all the above, which is very helpful.

Harvest has intervened, and my electrician has been hard pressed. So motor not wired, but it is installed.

Please can I ask another question concerning the 2 speed motor wiring?

Here is a diagram from the motor. Does the connection instruction for the High Speed, the lower of the two diagrams, imply that when L1, L2 and L3 are connected to A2, B2 and C2,, A3, B3 and C3 are connected together?

I dont really understand how they are not connected together (for obvious reasons) in Low Speed, but are in High Speed. Does this have to be done in the switch? Thanks for guidance.

Yup Brian, it is looking promising. I dont know what it is with mains electrics, its not as if I am incapable. I am good on vehicle electrics, and I installed all the conduit and cabling for my workshop as per the sparky instructions, but I have never dug deep into mains and 3 phase. Probably a good thing, I have had the odd jab from farm electrics, once bitten twice shy...

I am near Market Harborough, and spend most of my time fettling vintage bikes and cars. Racing took up all my spare time, but that is a young mans game. Still doing a bit though, and rallies, hill-climbs etc.

Many thanks due to all on this forum. I will continue with the posts till the lathe is going on 2 speeds. It may possibly help others.

This is the switch which is operated by the lever on the apron

Well Im not sure, Dave, that I always do things for strictly logical, sensible reasons (though I am also a hypocrite because I berate the girls in my family for their non-logical thinking sometimes!). So it can be problematical when one approaches the patient and helpful forum members with a problem, and then go off on a route which most think is possibly the wrong one. It smacks of thick-headedness.

All that said, I now have in my possession, a 2 speed motor, so am committed, if only to the tune of 80 quid.

Emgee is kindly staying with the folly, and here are the photos of the box which may contain starter and overload.

You said BD15, so we have a match. Give or take a D.

Edited By Tom Walker 1 on 28/08/2020 12:12:18

Edited By Tom Walker 1 on 28/08/2020 12:17:03

Emgee,

my lathe is up and running well on the single speed 3 phase motor.

Yes the lever on the apron starts and stops the motor, and switches the direction of rotation.

I will take a photo of the emergency stop button on the front, with its cover off.

I think it may well be an overload, as there is an adjustable thumb wheel.

Please bear with.

Emgee, first of all, thank you very much for hanging on in there with me.

I thought a starter would have a green "go" button, because on the farm that is what they are like.

You are saying that what I thought was just an emergency stop may also be a starter in conjunction with the switch on the apron handle.

Please assume that I have a low level of understanding then halve it.

I struggle to "read" the wiring schematic, because you need a level of knowledge to know what symbol means what.

However, I will get there in the end because the forum is a great help. I must admit I was put on the back foot by the fact that none of the off switches seem to work.

I will identify the parts of the switch as you request. I meant direction of rotation by DOR. I think I may have made that up

WRONG! The box on the back is the transformer for the light, not an isolator.

I took the front off the emergency stop and cant see anything obviously disconnected. It is also the overload by the look of it.

Emgee

no, it only has an emergency stop button and the suds pump switch box" on/off" on the front.

Interestingly, because you asked, I checked all the switches. There is a main on/off box on the back, and the stop button on the front. The stop button doesnt work, neither do the safety switch on the gear cover, nor the switch on the foot brake!

The lever on the apron starts and controls DOR with the drop rod that goes thru the chips tray to a switch which is tucked away behind the emergency stop box, on the other side of the panel. So you can see it easily from the back of the lathe, as you would expect.

So looking at the wiring diagrams I need the 2 speed switch and another motor overload for the second speed, wired between the 2 speed switch and the motor.

Luckily it seems the reverse switch can be left as is, but even with the wiring diagram in front of me, because I am "wiring diagram illiterate", I dont see how the reverse switch and the 2 speed switch manage to to everything.

I just need part numbers/makes for the two components.

Thank you Andrew.

Emgee, I have cracked it, and found the files at the Colchester website. I presume that the wiring diagram in the lathe manual is the one you were referring to.