Dear Friends,
Hello to all of you as I am a new member and just joined the forum.
I need your help regarding an issue in an autoclave which runs on 110v but connected to 220v and never worked again.
I am going to trace the fault. The first stage is mains noise filter.
I want to ask 2 questions.
1.can I run my equipment without the mains filter ? (Bypassing the filter)
2. What other parts should I check?

 

Why do you think the filter is faulty?
It is rated for 250V so the incorrect supply should not have damaged it.
Does it have a fuse?

 

The filter is just there to eliminate EMI on the mains line, you can by pass it or just check to see if you have the same voltage out as in.
Max.

 

Why do you think the filter is faulty?
It is rated for 250V so the incorrect supply should not have damaged it.
Does it have a fuse?

Albert , thank you for your reply.
it had a fuse with a ZNR For protection and both are good.
Now I am going to trace the fault by checking the power supply circuit components one by one. So the first component is mains filter. If it's good I will move on to other parts.
Yes it is rated for 220v but there are two tiny white components connected to the main input (you can see in image) which are grounded at the other end. These white components have become half black. They are directly connected to the mains filter which makes me think that mains filter could also be having some issue though it physically looks good from inside.
Second thing I want to ask can I run the equipment without the mains filter to test if rest of the circuit is working or not. Thanks

 

As I said, you can run it without the filter for test purposes, it does not impact the operation of the subsequent equipment in testing.
Max.

 

The filter is just there to eliminate EMI on the mains line, you can by pass it or just check to see if you have the same voltage out as in.
Max.

Thanks for replying. I will try it tomorrow.

 

Hello all.
I tried some more fault tracing in the circuit today.
Found that the transformer supplying power to the main control board has lost its primary winding. So , maybe that's why the system is not working.
Please see the attached image and let me know how can know what was the output of the transformer at the secondary side as I couldn't find any data for the transformer from internet.
I have taken out the transformer from the circuit and will try to find a replacement or try to get it repaired from market tomorrow.
Will also update you regarding the condition after transformer is replaced.
Thanks

 

Do you have the transformer you can post a pic of, there are a couple of ways you may be able to find out, is the primary open?
If so, that is rare, in some cases there is a thermal fuse buried in the winding.
What is the value of the large capacitor C31 above the blue wires, Voltage?
Appears the supply feeds some 5vdc regulators.
Max.

 

Thanks for replying.
yes the primary is open. You can see the picture of the transformer for reference.
the capacitor c31 is 25volts 1000uf.
part number is TS-E10510
1009
I

 

I would cut the insulation off, (carefully) and see if it exposes the ends of a thermal fuse etc.
Very unusual for the winding itself to go open.
~ 30Va transformer, what is the rating of the glass fuse?
Max.

 

Ok I am going to remove the insulation from the winding. It is possible in my case that the winding could have been damaged because the transformer primary was designed for 110 volts but exposed to 220 volts accidentally.
If nothing is found I will get a replica made of this transformer and get this one repaired, as techs in our market easily repair such transformers.

 

Ok I am going to remove the insulation from the winding. It is possible in my case that the winding could have been damaged because the transformer primary was designed for 110 volts but exposed to 220 volts accidentally.
If nothing is found I will get a replica made of this transformer and get this one repaired, as techs in our market easily repair such transformers.

Ah, I overlooked that bit, for that size of transformer and cost, it seems hardly worth the labour to do a complete rewind.
I would remove the tape and expose as much as possible of the winding, the problem is that the secondary is usually wound on secondly so it could be hard to access the primary.
Max.

 

In a pinch you could try TS Transformers, if this is who made it and is a valid part No. , they have some contacts here.
https://www.linkedin.com/company/ts-transformers-ltd
Max.

 

Ah, I overlooked that bit, for that size of transformer and cost, it seems hardly worth the labour to do a complete rewind.
I would remove the tape and expose as much as possible of the winding, the problem is that the secondary is usually wound on secondly so it could be hard to access the primary.
Max.

Thanks again for your reply.
Now we will discuss on further troubleshooting once I have installed the new transformer and seen the results. Great thanks