25
10.2 Table of setting the machine according to the sewing category
Commercial designation of the machine
1230i - 6XX - X
1) The standard setting of the machine for the categories 3 and 4 concerns a decorative stitching, when it is difficult to match
a good stitch interlocking with a faultless function of the thread trimming device. Otherwise, when sewing material of
considerable overall thickness, it will be necessary to increase the overtopping of the teeth above the needle plate and to
increase also the needle thread tension.
2) The thickness of a layer is measured using an engineer slide calliper with the pressure of jaws of about 10 N.
3) The values of tension are only orientative ones and it is necessary to adapt especially the tension of the hook thread
according to the stiffness of the material. An excessive tension of the threads when sewing soft materials causes material
wrinkling.
4)
When changing markedly the sewing category together with changing the tension of the shuttle thread, it is necessary to
modify the tension of the retaining spring of the trimming device according to the paragraph 4.7.
5)
When changing markedly the sewing category together with a marked change of the needle number, it is necessary to correct
the setting of the distance of the hook from the needle, according to the paragraph 3.1.3.
6)
The splice with the so-called spur may be used with the sewing categories 100 and 200 and is designed for sewing thin
materials.
In the production factory , the gib without spur is mounted as standard.
Standard machine setting
1)
Needle
Sewing
Feeder
Thread tension
Splice
size
speed
3)
of hook
width
pitch
of hole of teeth
needle
hook
thread
thread
5)
4)
0,01 mm
SPM
mm
mm
N
N
80
2500
1,2
1,0
31
6)
90
2000
1,5
1,0
4,5
1,5
6)
130
1200
2,0
1,5
5 - 8
2
160
800
2,4
1,5
10- 12 2 - 2,5
Standard sewing parameters
Thickness Number Stitch
Label
of one
of mate- length number
material rial layers
of thread
layer
PES
2)
mm
mm
0,8
2
2
70
1
2
3
40
1,5
1-2
5
20
1-2
10 upper
2
or
5
2-320 lower
Sewing
category
-100
-200
-300
-400
Setting as per chapter
Instructions for service
3.5.2.5
3.5.2.5
Instructions manual
6.5
6.4
6.4
Instructions for assembling
2.4
4.5
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