Don’t know what happen but there’s smoke.

[Munky]

So I recently bought a lathe DSL 1237G from a Gun shop. They had it running on 220v with a Nema 6-20 and i changed it to a Nema 6-50 since that’s the style plug I run at my home shop. I have the manual but it doesn’t help too much. But I’ll attach the diagram for helping purposes as well as the old plug

Well when it tested fine there and I brought it home and switched the romex cable they were running. And I powered it up. I got the spindle to spin and then pop and smoke from inside the electrical box.

So far I’ve determined the transformer was the only think I believe damage. The contactors are showing their appropriate NC and NO ONE when it’s not energized.

So my real question is can anyone help me determine what the heck happened.

I’ll attack picture of the motor wiring and the electrical box wiring. Any advice would help as I wired my CNC converted knee mill right.

Inside the motor is labeled as followed.

3,4 | A2 | A1 | 1,2
____________________________

V |. M6. |. M5. |. U

Thanks for any help in advance. I’m on standby to try and test anything out.

Also I’m showing continuity on all parts of the transformer EXCEPT anything from h1 TO any of the other H2,H3,H4. Everything on the X1-3 side is good

Edit: forgot to mention I already have a transformer on the way and I’ll add it to the pictures below.

Miguel

 

[brino]

Hi @Munky

Welcome to the group!

We have a few electrical guru's hanging around here. @markba633csi is one....

I also think there was a manual for such a thing around here somewhere..... that may take some time to dig up.
Hold on.

Brian

 

[brino]

You might check this thread for a manual:
https://www.hobby-machinist.com/threads/darsin-dsl-1340gh-request.69526/#post-582034

I'll add any more I find too.

Brian

 

[sdelivery]

Do you have the electrical schematic?
The portion of the drawing you are showing shows a 110 volt input.
They may have been picking up 110 from a 220 plug by NOT using one leg and using the neutral.
Both of the transformers appear to be wired for 120 input.

 

[Munky]

This is the factory manual I put together from I believe that post.

 

[Munky]

There’s also this post where someone has a similar enco machine

Post in thread 'ENCO 110-2079'
https://www.hobby-machinist.com/threads/enco-110-2079.85513/post-761252

 

[Munky]

Do you have the electrical schematic?
The portion of the drawing you are showing shows a 110 volt input.
They may have been picking up 110 from a 220 plug by NOT using one leg and using the neutral.
Both of the transformers appear to be wired for 120 input.

This is what I was afraid of and I burnt it up feeding 220 through it.

 

[Munky]

For the transformer, for the 220 volt. Am I wiring it from H1 to R and H2 to S?

 

[Munky]

I’ve tried to follow this guide but he went in a different direction because it was his contactor that went out.

W

Thread 'Central machinery 12x36 lathe wiring'

Aug 27, 2023

Hi everyone, new to the site, I recently purchased a central machinery lathe, (dsl1237gh) the previous owner replaced the original motor with a 1.5hp Baldor, somewhere along the way when he wired it, there were a few missed connections, I worked thru most of it, got lathe running but will not reverse and jog switch pops breaker when engaged, I am wondering if anyone would happen to have a manual or any insight on this model, thanks.

• Wiscomx78
• Replies: 93
• Forum: ASIAN LATHES & MILLS

 

[Ulma Doctor]

For the transformer, for the 220 volt. Am I wiring it from H1 to R and H2 to S?

luckily, transformers don't care about polarity.
But, for 220v operation the input is:
H1 is R
H2 is S

Output 110v :
2 to X3 and 1 to X1


BTW, the original transformer was tapped for 110v in pictures 3,4,5 in post #1
that released the smoke when 220v power was applied