Pretension Tension - Brother BAS-343E Instruction Manual

E series programmable electronic pattern sewer

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5. Correct use

5-6-6. Pretension tension

1. Raise the work clamp q and open the main tension disc w.

The thread take-up spring e should not operate when the thread is pulled in the direction of the arrow.

2. Set the thread tension for the thread breakage detector pretension r to approx. 5 g.

Weaken the thread tension for the machine head pretension t as much as possible.

Standard for balance of thread tension

Adjust the thread tensions so that the total tension for the pretensions r and t is lower than the tension for the

thread take -up spring.

NOTE

If misoperation of the thread breakage detector continues, repeat the adjustment procedure above.

(Such misoperation is most likely to occur when synthetic fiber yarns are used.)

BAS-343E

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