Thread Burning Device; Thread Deflector - Duerkopp Adler 506 Service Instructions Manual

11. Thread Burning Device

11.1 Thread Deflector

34
The electric thread burning device separates the needle and
underthread by burning.
The needle thread is melted at the end.
The resulting small hardening hinders an unravelling of the seam.
To achieve a flawless melting of the thread ends only synthetic
threads may be used.
The length of the burnt-off underthread on the material corresponds to
the needle plate thickness of approx. 5 mm.
The thread deflector 3 pulls the thread quantity drawn-forward by the
thread pull into the correct position for the burning procedure.
Swing movement
The thread deflector 3 must pull forward as much thread as possible.
The drawn-forward thread quantity may, however, only be so great that
the thread is not under tension.
ATTENTION !
Too high a tension leads to a fraying of the thread during burning. The
thread end does not melt together.
1
–
Open the head cover.
All functions of the controls are blocked.
–
Loosen the nuts 1.
–
Set the swing movement of the thread deflector 3 by sliding the
cylinder suspension up or down.
–
Tighten the nuts 1.
2
3