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10.2 Table of setting the machine according to the sewing category
Commercial designation of the machine
1183i - 7XX - X
1) The standard setting of the machine for the category 3 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)
The splice with the so-called spur may be used with the sewing category 200 and is designed for sewing thin materials.
In the production factory , the gib without spur is mounted as standard.
When using the gib with the so-called spur, we recommend carrying out the setting of the pin of the thread mechanism (par.
3.2.4) for the sewing category 300.
Standard sewing parameters
Thickness Number Stitch
Label
of one
of mate- length number
material rial layers
of thread
layer
PES
2)
m m
m m
1
2
2.5
40
1.5
1-2
3.5
20
Sewing
category
-200
-300
Setting as per chapter
Instructions for service
3.5.3.1.2
3.3.2
3.5.3.2.2
3.6.6.1
3.6.6.2
Instructions manua
6.5
6.4
6.4
Instructions for assembling
2.4
4.5
Standard machine setting
1)
Needle
Sewing
Position
Width
Feeder
Presser
Presser
Thread tension
Splice of hook
size
speed of feeding of needle
-
top roller top roller
3)
lever pin
plate
pitch
diameter
position
insert
of teeth
needle
hook
hole
thread
thread
0.01 mm
SPM
m m
m m
m m
m m
N
N
100
2500
1
1.5
0.6
35
10.5
4,5
1.5
4)
130
1600
1
2
0.6
35
10.5
5 - 8
2