Bedienungsanleitung Durkopp Adler 525 (Seite 5 von 37) (Englisch)

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Part A - Instruction manual

1. Proper use of the machine

The machine is designed for decorative (figure) stiching in manufacture of outwear and of ladies´ underwear of elastic materials

(lycra). It can be used for decorative stitching of canvas footwear as well. 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

Industrial flat-bed sewing machine for figure stitching of patterns formed by one or two needles. It stitches using a two-thread

lockstitch, with two-way drop feed. The stitch length is adjustable by means of a knob mounted on the web of the machine arm.

The backward stitching is controlled by a hand lever, eventually, by pedal or by electromagnet in accordance with the equipment

of the machine. The shape of the stitched pattern is given by an exchangeable cam, always for one pattern – table 2. 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)

S791 642049 Cam for decorative stitching - standard

S791 642037 Adjusting cam – plain stitch

4.1.2 Sewing equipment

S791 124032 35 Sewing equipment 525 E 032 - standard

S791 124033 35 Sewing equipment 525 E 033

S791 124034 35 Sewing equipment 525 E 034

S791 224075 35 Sewing equipment 525 E 075

Type of the Noisiness % machine

machine dB employment

525-101 84 20

525-105 84 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

525-101

525-105

•

optional equipment

standard equipment

•

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