Bedienungsanleitung Durkopp Adler 4280i - 6 (Seite 5 von 35) (Englisch)

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Part A - Instruction manual

1. Proper use of the machine

The machine can be used in the shoemaking industry for sewing of light medium and heavy shoe uppers. It is suitable for sewing

natural and man made leathers, shoemaking textiles and even plastic parts of sports shoes.

The machine is also used in the fancy goods industry for sewing bags, handbags, rucksacks and cases from the usual fancy

goods materials.

The machine sews with a double needle stitch. It is standardly equipped with needles of the 134 KKLR system which are suitable

for sewing leather. When sewing textile materials it is necessary to install the needle of the 134 system. The machine enables the

sewing of both technical and decorative seams which have almost the constant length of the stitch at a different sewing speed.

Only a dry material, which cannot be thicker than 6 mm when depressed by top roller, can be sewn by these machines, generally.

The material cannot contain any hard subjects, to the contrary case it is possible to work only with applied eye-protective shield.

Such a shield is not available to delivery at this time. Generally threads up to size 1000 dtex x 1 x 3 (Labelled number 10) have been

used namely synthetic, cotton or core threads. Whoever should like to use other special threads, that one should consider the

resulting risks and make appropriate safety measures.

The total thickness is determined by sewing with a thicker needle of very strong material. In cases like this it is also necessary

substantially reduce the speed of sewing below the value shown in paragraph 5.

These special machines may be installed a operated only in dry and kept up expanses. We, as industrial sewing machines

manufacturers, agree with the fact that our products are operated, at the least, so far learned operators who can carry out all usual

operating functions and suppose their possible risks as perceptible.

Machine noisiness

Machine noisiness has been measured in accordance with the standards ISO 3746, ISO 11204 at maximum speed.

Laeq = equivalent machine noise of the self-standing machine on the working place, converted to % machine employment (dB)

- stated in the table

2. Description of the machine

It is double-needle machine. It sews with a double threaded lock-stitch. It has a lower circular feed, needle feed and a top roller

which is driven. There are two possibilities for feeding. At the first step it feeds a lower circular feed, needle and top roller.

Secondly it feeds only the circular feed and the top roller (the needle is above the throat plate). Feeding can be in both directions.

The stitch length can be adjusted with an adjusting dial. The feeding mechanism can be adjusted to two systems after removing

the rear cover:

1. Stitch length up to 4 mm at max. sewing speed up to 3000 rpm.

2. Stitch length up to 5 mm at max. sewing speed up to 2000 rpm.

Caution!

Maximum allowed speed must not be exceeded for the given system of sewing. Otherwise it can cause damage to the

feeding mechanism.

The machine is fitted with two large-size vertical hooks protected by an safety clutch.

The machine uses a wick lubrication system with central oil supply. Each hook is lubricated from an independent oil source.

The simplest sub-class is standardly equipped with a knee operated lever. Specially for the Czech republic and if required with

treadle. Reverse stitching is with a manually operated lever.

Higher sub-classes have always mechanical control like the simplest sub-class, and furthermore there is a possibility of levelling

the needle, thread trimmer, electromagnetic top roller lift and electromagnetic reverse stitching (according to your order).

Each sub-class can be delivered in four sewing categories. Sewing category is determined by the number of the thread label and

the corresponding number of the needle. Each sewing category is available with a range of needle distances. In the factory, the

machine has been adjusted to the ordered needle distance and sewing category. Readjustments to another needle distance or

sewing category should be carried out by an experienced mechanician. A stand with wedge is in the simplest sub-class equipped

with a lever clutch motor and if required with a stop motor which enables the levelling of the needle.

In higher sub-classes, the stop motor is either situated on the machine table top or as a minimotor integrated on the machine

head. The type of mechanical top roller lift depending on the stand has one or two treadles.

Type of the Noisiness % machine

machine dB employment

4280i-XXX-100 82 20

4280i-XXX-200 79 20

4280i-XXX-300 73 20

4280i-XXX-400 70 20

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