Operating instructions

5.17 Residual-thread monitor RFW 20 - 7

The residual thread monitor monitors the quantity of the thread on the

bobbin. A signal is issued on the PC announcing that only a small

quantity of thread remains.

The operator can finish the seam and insert a new bobbin. This way

undesirable repairs or damage to the material are avoided.

Function and operation of the residual thread monitor

If the light beam from the light barrier is reflected by the surface 1 on

the bobbin core during sewing, a signal is issued on the PC and the

sewing process will be interrupted.

–

Confirm the message on the PC screen.

–

Release the pedal and then push it forward again. The seam will

be continued. Generally the quantity of thread left in the reserve

groove 2 of the bobbin will be sufficient to finish the seam.

–

At the end of the seam push the pedal back. The thread will be

cut.

–

Terminate the sewing mode with “Back” on the PC.

Caution: Risk of injury!

Tur n off the main switch!

The bobbin may only be changed with the sewing machine being

switched off.

–

Replace the bobbin.

–

Reactivate the sewing mode on the PC with “Sew”.

A new seam can be started.