Rfw 13-3 Bobbin Thread Monitor - Duerkopp Adler 550-767 Operating Instructions Manual

5.13 RFW 13–3 bobbin thread monitor
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The bobbin thread monitor monitors the quantity of thread on the
bobbin. A signal is issued on the PC when only a small quantity of
thread remains.
The operator can finish the seam and fit a new bobbin, thus avoiding
damage to the material and the need for repairs.
Function and operation of the bobbin thread monitor
If the light beam from the light barrier is reflected by surface 1 on the
bobbin core during sewing, a signal is displayed on the PC and sewing
is interrupted.
–
Acknowledge the message on the PC screen.
–
Release the pedal, then push it forwards again. The seam will be
continued. The quantity of thread in reserve groove 2 of the bobbin
is normally sufficient to finish it.
–
At the end of the seam push the pedal back. The thread is cut.
–
Terminate sewing mode on the PC with "Back".
CAUTION: danger of injury!
Turn off the main switch!
The bobbin may only be replaced with the machine turned off!
–
Replace the bobbin.
–
Reactivate sewing mode on the PC with "Sew".
A new seam can be sewn.
CAUTION:
The bobbin must be placed in position with ring 3 downwards. The area
around the bobbin housing and light barrier must be cleaned of any
fluff!