Thread Tension - VERITAS Rachel Instruction Manual

Thread tension

Upper thread tension (1)
Basic upper thread tension setting: "AUTO".
To increase the tension, turn the dial to the next higher number. To reduce the tension, turn
the dial to the next lower number.
A. Normal thread tension
B. Upper thread tension too loose
C. Upper thread tension too tight
Lower thread tension (2)
To test the bobbin thread tension, the full bobbin is placed in the bobbin case. The bobbin
case and gripper are then suspended by the end of the thread. If the tension is correct, the
thread will unwind by about 5 - 10 cm, when gently swung and will then remain suspended.
If the full bobbin case unwinds, the tension is too slack. If the tension is too tight, it hardly
unwinds or does not unwind at all. To adjust, use the screwdriver.
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