Duerkopp Adler 173 Betriebsanleitung - Seite 4

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2. Machine elements and their functions

2.1 Elements at the machine head

Element

Hand lever 1

Screw 2

Oil check tube 3

Dial 4

Needle thread puller 5

(Only subclass -141521)

Needle thread tension 6

Looper thread tension 7

Oil reservoir 8 with

inlet opening

Dial 9

Looper thread puller 10

(Only subclass -141521)

Release lever 11 for

the thread tensions

Thread guide 12

Needle 13

Thread regulator 14

Locking button 15

Function

–

Swinging up the puller. It is swung out of the working

area.- Sewing with bottom feed only.

–

Regulating the sewing foot pressure depending on the

material.

–

Monitoring the oil circulation for the lubrication of the

front arm shaft bearing. The oil flow must not be

interrupted while the machine is running. If necessary,

check the oil level in the reservoir 8 or top up with oil.

Only ESSO SP-NK 10 or an oil of the same quality

must be used.

–

Feeding length for the top feed puller.

–

Initial thread for the stitch formation at the seam

beginning after the threads are trimmed.

–

One revolution of the turning button with numerals

covers the entire tension range. Thus, the tension

values can be easily reproduced.

–

Same as 6, but with a weaker tension spring.

–

The oil level must not drop below "MIN". If necessary,

top up with ESSO SP-NK 10 oil to "Max".

–

Setting the stitch length for the bottom feed.

–

Initial thread for the stitch formation at the seam

beginning after the threads are trimmed.

–

Pulling out the threads by hand, eg when threading

–

Basic adjustment centre of the elongated hole.

–

System 934 SIN or 933.- Needle sizes Nm 80-130

depending on the sewing equipment (E-Nr.).

To exchange the needle, always turn off the

main switch! - Danger of injury!

–

For secure stitch formation in the case of elastic

threads, such as eg synthetic spun threads and

monofilament threads. For the adjustment see

section 3.4.

–

Locking the foot in its lifted position.