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Teamwear · 2 Weeks Ago

I just picked up a used SWF-likely needs adjustment. My other SWF runs great.

This one ran great for about a day now I am getting "Under thread break stop" on all needles.

Thread is not broken. Stitches about 15 seconds and stops.

Any suggestions prior to calling the tech out?

Thanks
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zoom_monster · 2 Weeks Ago

Take the bobbin out of the machine that works.....note the tension and then insert into the machine that's not running right. If this fixes the issue, clean the bobbin case, hook area and match the tension to the specs in your manual. Double check the thread paths an adjust top tensions as needed.

Ian

Teamwear · 2 Weeks Ago

I took the bobbin out of the machine that works-put it into the machine that does not work. Same results.

The top tension had worked on all 3 needles that were being used.

Is there a thread break sensor that could be blocked by lint, etc? If so-where is it?

Just confusing that it was running so good on all 3 needles that I was using and now not on any of them.

My other machine does not have the same error code-"under thread break stop" or at least I have never ran across it and SWF does not mention the difference between the two messages.

I feel like it is just something simple-I must be missing something.

tfalk · 2 Weeks Ago

If I understand it correctly, the 'thread break' sensors are the little wheels underneath the top tensioners. The machine thinks the thread has broken if it stitches and those wheels are not turning... is the thread looped around the wheels? I'm assuming that's the first thing you would have checked...

I'm pretty sure there is also a setting in the control panel that tells the machine how many stitches to go before it stops for a thread break, I think it's in the machine tab?

Does the machine have a lower thread break sensor that I don't know about????

zoom_monster · 2 Weeks Ago

The sensors are behind the wheels on a card. The difference(between a top and bottom) that the machine "sees" is where in the stroke the slack happens. Youre right, it is probably something very simple. Take off the needle plate, make sure you're all clean and lubed. check the second set of tessioners, just above the wheel. If these are not tight enough, there will not be enough drag on the sensor wheels. As a quick fix, some people will wrap the thread around the wheel twice. If the sensors are turning and your still having issues, check the cables attached to the card in the back.

Ian

Teamwear · 2 Weeks Ago

This is likely a good post for us all.

My tech (Sewtech.net) is coming out in a day or two-offfered to even come out quicker.

He says the likely cause is the senser is dirty-and I can agree-I cleaned the exterior of the machine for a while when I got it to the shop.

The tech walked me through turning off the under tension sensor and it works great again. Sewed several things since turning it off.

My hopes-and expectations are that the tech will clean the machine in that area and we can turn the sensor back on again.

I got a great deal on the machine-but it will cost a little with the tech. I am VERY ok with that.

Not a promotional post-but I like my tech. We all need one we can depend on.

Teamwear · 2 Weeks Ago

I'll post again when he comes out and let you guys know where/what this sensor is.

He had serviced this machine when the original owner had it in service. It was in a sceen shop and he thought it likely had "sticky stuff" in it as it was used very close to a screen printer.

Very surprised how well it worked when the sensor was turned off-and it was in the machine tab. Two options on there-one for upper and one for under-settings for 0-9. 9 was high-0 was off.

Makes sense-but curious to see how the sensors really work.

Again-we have only owned an embroidery machine for about 9 months. Previously we had outsourced everything that was stitched for about 3 years. We just grew to the point of needing to do it ourselves.

Thanks again for all the help to everyone who responded. Feel free to ask anything of me that may be of help to you.

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Under thread break stop on SWF 1501