Adjusting The Needle Thread Tension; Opening The Needle Thread Tension - Duerkopp Adler 511 Operating Instructions Manual

7.2

Adjusting the needle thread tension

7.3

Opening the needle thread tension

3
Pretension 3
With the main tension 2 open, a minor residual stress of the needle
thread is required. This residual tension is created by the
pre-tensioner 3.
The pre-tensioner 3 influences both the length of the cut needle thread
and the starter thread for the next seam.
–
Shorter starter thread:
Turn knurled nut 1 in clockwise direction.
–
Longer starter thread:
Turn knurled nut 1 counter-clockwise.
Main tension 2
The control unit is used to adjust the main tension 2.
A maximum of five thread tension ranges can exist for one seam
pattern. (Refer to the chapter on "Controller Operations".)
Automatic
The needle thread tension is automatically opened when trimming the
thread and when lifting the fabric clamping feet.
2 1
1
9