Bernina Artista 640 User Guide - Page 33
Thread Tension - embroidery format
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Thread Tension Basic tension settings apply automatically when a stitch or program is selected. The tension is factory set for the best possible sewing results using a 100 weight, 2 ply polyester thread (100/2). "Metrosene" 100/2 (Arova-Mettler, Switzerland) thread is used for the bobbin as well as the upper thread. The tension may vary when using other types of thread such as embroidery thread, and it may be necessary to adjust the tension to suit the fabric and stitch type. Altering the Tension • touch symbol Functions 33 Altering the Tension • the perfect stitch formation is shown in the middle of the touch- screen (stitch formation in the fabric) the basic value is indicated by the blue bar on the scale • turn stitch length or stitch width knob to the left or right = the thread tension is loosened or tightened • the tension alteration is indicated on the left side of the tension scale • tighten upper thread tension (= the upper thread is tightened which pulls the lower thread to the right side of the fabric • loosen upper thread tension (= the upper thread is loosened which pulls the upper thread more to the wrong side of the fabric • the tension alteration affects only the selected stitch and will be deleted with «CLR» and does not remain saved when turning the sewing computer off «0» • the alteration is indicated on the scale and on the multifunction button on the screen • the basic value stays visible (in black) when a change is made Save and close • touch «OK» • the alteration is saved, the screen display changes Back to Basic Settings • touch «Reset» to return tensions to the basic settings • touch «OK» symbol to confirm No adjustments • touch «ESC» • the existing thread tension is not changed