User manual DURKOPP 888-460522 BROCHURE

[. . . ] Reproduction or publication of the content in any manner, even in extracts, without prior written permission of Dürkopp Adler AG, is prohibited. Copyright © Dürkopp Adler AG - 2010 Foreword This instruction manual is intended to help the user to become familiar with the machine and take advantage of its application possibilities in accordance with the recommendations. The instruction manual contains important information on how to operate the machine securely, properly and economically. Observation of the instructions eliminates danger, reduces costs for repair and down-times, and increases the reliability and life of the machine. [. . . ] Adjusting tensioners (2) and (3) ECO and CLASSIC machines with electro-magnetic control ­ The machine can be equipped with a lever (4) for the tensioner (2) temporary switching off. In this case, two thread tension values can be pre-selected and a good stitch tightening can be achieved when sewing over a variable number of layers of the sewn material with one seam. ­ Switch the tensioner off (2) with the lever (4) and sew on a smaller number of layers. ­ Regulate the thread tension with the tensioner (3), till a good thread loop is achieved (see below). ­ Switch the tensioner on (2) by the lever (4) shifting out and sew on a greater number of layers. ­ Regulate the thread tension with a tensioner (2), till a good thread loop is achieved (see below). ­ If the machine is not equipped with the lever (4), regulate the tension by both tensioners (2) and (3) at the same time so that their nuts are screwed approximately in the same height. 14 Adjusting tensioners (2) and (3) CLASSIC machines with pneumatic control ­ Through pressing the key (5) the additional tension (2) will be switched off. If the key (5) is pressed anew, the additional tension will be activated again. The connectable additional tension (2) helps in quick adjustment of the needle thread tension, for example in order to get a tight stitch formation with regular seams when sewing different materials. ­ Press the key (5) ­ Sew material with few layers and regulate the thread tension via the main tensioner (3) until the correct interlacing of the thread is reached (see illustration). ­ Sew material with more layers, switch on the additional tension (2) via the key (5) and regulate it until the correct interlacing of the thread is reached. Correct interlacing of threads in the center of the material GB Needle-thread tension too weak or Hook-thread tension too strong Needle-thread tension too strong or Hook-thread tension too weak 15 6. 5 Switching on/off the thread tensioners 1 2 3 4 5 ECO and CLASSIC machines with electro-magnetic control ­ When pulling the hand lever (1) towards the operator, the tensioners (3) and (4) are switched off. When changing to another needle size, the distance between hook and needle, as well as the position of the throat plate towards its post must be readjusted (see service instructions). 21 6. 10 Lifting and folding the roller presser 1 3 4 Lifting the roller presser with a hand lever ­ Lift the roller presser by the lever turning (1) in the arrow direction to the stop (the roller presser remains lifted, the lever (1) remains tilted). ­ Lower the roller presser by putting the lever (1) to the initial position, or by pressing the knee lever (3) and its subsequent release. ­ After the roller presser lifting with the hand lever, the machine may be started up (e. g. Roller presser lifting with the knee lever ­ The roller presser is lifted by pressing the lever (3); the roller presser is lowered at the lever release. At the roller presser lifting higher than 6 mm over the throat plate the machine may not operate, otherwise the needle bar with the needle holder hits the roller presser, or the needle guides of the double needle machines. Roller presser lifting with a pedal - automatically ­ The roller presser lifting in the machines equipped with a positioning motor (drive) can be controlled by the pedal (4) treading in the position -1 (see chap. The roller presser is lifted to the upper dead point by means of an integrated electric magnet or pneumatic cylinder. ­ It is possible to pre-select the automatic roller presser lifting at each machine stop without the necessity to tread the pedal in the position to the position -1. In this case, the roller presser is lowered at the pedal treading in the position +1. After the finishing of the seam, the roller presser remains lifted permanently (see chapter 8). 22 Roller presser folding Caution!Roller presser folding to be done at main switch off and standing motor. [. . . ] Their description is included in the booklet "Efka Operation Instructions". Other automatic functions can be preset through the drive parameter change. It is possible then to preset the parameter value for the particular parameter number. The parameter change is described in the booklet "Efka Operation Instructions". [. . . ]