Bernina 7 Series Manual page 26

Sewing preparation Sewing preparation
Thread tension
26
Higher upper thread tension = the upper thread is tightened, which
pulls the lower thread up to the top of the fabric.
Lower upper thread tension = the upper thread is loosened, which
enables it to be pulled to the back of the fabric.
Basic settings are applied automatically when a stitch pattern or program is
selected.
The upper thread tension is set optimally at the BERNINA factory and
the sewing computer has been tested. Metrosene-/Seralon thread size
100/2 (Company Mettler, Switzerland) is used for upper and lower
thread.
In case of using other types of sewing or embroidery threads, the optimal
tension may vary. Therefore it may be necessary to adjust the upper thread
tension according to the fabric and the desired stitch pattern.
Altering the upper thread tension
⦁
touch «i»-icon
⦁
touch «Upper thread tension»-icon
►
the optimal stitch formation (stitch formation in the fabric) is visible
►
the white bar within the scale and the number in the icon show the basic
setting
⦁
touch arrow icon up/down or
⦁
turn stitch width or stitch length knob to the left or to the right or
⦁ move the round knob in the Display using the finger
►
upper thread tension is tightened or loosened
►
the alteration of the upper thread tension is visible within the scale (yellow)
and in the yellow-framed icon
►
basic setting remains visible (white)
►
the alteration of the upper thread tension only affects the selected stitch
Saving the upper thread tension
⦁
touch «Back»-icon
►
the setting is saved and the Display closes
Reset settings
⦁ touch the yellow-framed icon
►
basic setting is reset
⦁
switch off the sewing computer
►
any alterations are deleted