Operation Manual

1
Part A - Instruction manual
1. Proper use of the machine
The machine is destined for sewing on under collars into neck openings of jackets, for sewing on top collars on falls of under
collars, for sewing on lining collars into the top parts of trousers, for sewing on pocket facings on trouser bags, for overedging
of edges and similar operations in making-up outerwear, for sewing materials of wool, cotton and materials with admixture of
synthetic fibres and woven fabrics of 100 % polyamide fibres. In general, only dry material may be sewn on these machines,
which should not be thicker than 4 mm when being compressed by the presser foot. The material should not contain any hard
objects, because in such opposite case the sewing operation would be possible only with an eye protector. Such eye protector
is not supplied for the time being. When sewing very hard or compact materials with a thicker needle, the total thickness thereof
is limited. In such case it is also necessary to reduce substantially the sewing speed below the value quoted in the par. 5. These
machines may be installed and operated only in dry and maintained rooms.
As manufacturers of industrial sewing machines we start from the supposition that our machines will be operated at least by a
trained staff, so that all usual operating activities and their eventual risks may be supposed to be known.
Machine noisiness
The noisiness of machines is measured according to ISO 3746, ISO 11204 at the maximum sewing speed.
Laeq = equivalent noise level of the machine itself on the working place converted in % of the machine utilization (dB) – is given
in the following table
2. Description of the machine
It is flat-bed single-needle machine. It sews with double-thread zigzag lock-stitch, with two-way drop feed. The stitch length is
adjustable using a knob. The backward stitching is controlled by a hand lever, eventually, by pedal or by electromagnet in
accordance with the equipment of the machine. The position and the width of the zig-zag stitch are adjustable by levers situated
on the machine arm. The presser foot lifting is controlled by a hand lever, eventually, by pedal, or by a knee lever or by electromagnet
in accordance with the machine equipment.
The machine is provided with a large diameter horizontal hook. It has a 1.8 x greater reserve (volume) of threads than a standard
hook. The lubricating system of the machine is of a group wick-feed type with automatic regreasing of the hook.
3. Machine subclasses
Table 1
4. Survey of equipment
This survey does not include the equipment assembled on the stand (see part B).
4.1 -for the subclass -101
4.1.1 Necessary equipment
S791 995068 Parts of backtacking (with pedal)
4.1.2 Sewing equipment
S791 124032 35 Sewing equipment 525 E 032
S791 124033 35 Sewing equipment 525 E 033 - standard
S791 124034 35 Sewing equipment 525 E 034
S791 224075 35 Sewing equipment 525 E 075
Type of the Noisiness % machine
machine dB employment
524-101 83 20
524-105 83 20
Machine type Hook Presser foot lifting Backtacking Thread
trimmer
Class-subclass Large Via knee lever Via electro- Via hand Via Via electro-
or pedal magnet lever pedal magnet
524-101
524-105
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•
•
•
•
•
•
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optional equipment
standard equipment
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