How to repair “False Thread Breaks” or “Undetected Thread Breaks” on your commercial embroidery machine.
This applies to Embroidery Machines with Check Spring sensors as opposed to ones with wheel sensors
If you are experiencing “False Threads Breaks” on your embroidery machine it could be due to the connection at the thread break sensor.
The thread break sensor on machines with check spring type sensors can sometime malfunction if the connection is not perfect.
The thread break sensor is activated when the “Check Spring” touches the sensor long enough to active it.
If your sensor is dirty or has some corrosion then it might not make a perfect connection.
To fix this, use a piece of very fine sand paper at the point where the check spring touches the sensor
In our parts book, our check spring is indicated with a red arrow. The sensor, indicated with the black arrow, should be as clean as possible at the point where it touches the check spring. This point is where you should clean off any debris or corrosion.
If the check spring does not make a connection, or is always touching, then use a flat head screw driver in the middle of the tension knob to either tighter or loosen the check spring. The screw to adjust is shown in green on our tension base example.
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