The Functioning Of The Main Thread Tension And The Supplementary Thread Tension In Relation To The Sewing Foot Lift; Adjusting The Thread Regulator - DURKOPP ADLER 838 Instruction Manual

6.5.1 The influence of the sewing foot lift on the main thread tensioner and supplementary thread
tensioner
6.6

Adjusting the thread regulator

14
Button 4 (see chapter 6.5) on the machine's key pad can be used to
activate or deactivate the supplementary thread tension at any time.
The parameter F-147 must be set to "1" for this to work.
Sewing foot Sewing foot lift
in the seam
Parameter Thread
setting main
tension
F-196=0 0
F-196=1 1
F-196=2 0
F-196=3 1
1 = Thread tension opened mechanically
0 = Thread tension closed mechanically
·
If the supplementary thread tensioner is open, the state of the
sewing foot lift does not change.
·
If the machine is turned off, the supplementary thread tension
remains at its previously set state.
2 1
The thread regulator (2) is used to control the quantity of needle thread
required by the stitch formation.
The best sewing results can only be ensured when using a precisely
adjusted thread regulator.
–
Loosen the screw (1). Move the thread regulator (2). Then tighten
the screw (1).
–
For most sewing jobs, the thread regulator is best positioned when
the right edge of the regulator is aligned with the number 3.
–
The setting at position 4 is appropriate when using a thin sewing
material with a very short stitch.
thread has been cut
Thread Thread
supplementary main
setting tension
0 0
1 0
0 1
1 1
1 2 3 4
After thelift
Thread
supplementary
setting
0
0
1
1