User manual DURKOPP 888

[. . . ] 888 Spezialnähmaschine Betriebsanleitung Instruction manual D GB Postfach 17 03 51, D-33703 Bielefeld · Potsdamer Straße 190, D-33719 Bielefeld Telefon +49 (0) 521 / 9 25-00 · Telefax +49 (0) 521 / 9 25 24 35 · www. duerkopp-adler. com Ausgabe / Edition: 09/2010 Änderungsindex Rev. index: 04. 0 Printed in Federal Republic of Germany Teile-Nr. /Part. -No. : 0791 888740 Alle Rechte vorbehalten. Eigentum der Dürkopp Adler AG und urheberrechtlich geschützt. Jede, auch auszugsweise Wiederverwendung dieser Inhalte ist ohne vorheriges schriftliches Einverständnis der Dürkopp Adler AG verboten. [. . . ] If the automatic foot lifting at the machine stop is pre-selected, the tensioners are switched off, but temporarily only, so that the switching off electric magnet does not overheat. ­ Tensioners (3) and (4) are also switched off temporarily during the trimming cycle. ­ Tensioners (3) and (4) are not switched off at the foot lifting with the hand or knee lever. 16 6. 5. 1 Function of the thread main tension and the thread supplementary tension in relation to the sewing foot lifting The thread supplementary tension can, at any time, be switched on or off by actuating key 4 (see chapter 6. 5) of the key pad. To this end, the parameter F-147 must be set on "1". Sewing foot lifting during seam Sewing foot lifting after thread trimming Threadmain tension 0 0 1 1 Threadsupplement. tension 0 0 1 1 Parameter Setting F-196=0 F-196=1 F-196=2 F-196=3 Threadmaintension 0 1 0 1 Threadsupplement. tension 0 1 0 1 1 = Thread tension opened mechanically 0 = Thread tension closed mechanically · · If the thread' s supplementary tension is opened, this condition will be maintained when lifting the sewing foot. When switching the machine off, the last setting of the thread's supplementary tension will be maintained through the mains connection. GB 17 6. 6 Adjusting the thread regulator 2 1 1234 The thread regulator (2) controls the quantity of needle thread required for stitch formation. The thread regulator must be precisely adjusted for an optimum result. ­ Loosen the screw (1), shift the thread regulator (2), and tighten the screw (1). ­ For most of the sewing operations, the thread regulator optimal setting is with its right edge set to `2'. ­ The setting `3' is suitable for thin materials and very short stitches only. 18 6. 7 Changing the needle with single-needle machines with the hook on the right 1 2 MAX. 3° 3 4 5 Caution!Replace the needle with the main switch switched off and the motor stopped. ­ ­ Draw the lever (1) in your direction to loosen the screw fixing the needle. Remove the needle and insert a new one with the needle scarf (2) to the right [see section (3) or (4)]. Turn the lever (1) back to tighten the screw fixing the needle. GB ­ Caution!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). 19 6. 8 Changing the needle with single-needle machines with the hook on the left (machine with lower material trimming) 1 2 3 4 5 MAX. The needle may only be changed with the sewing machine switched off ­ ­ Draw the lever (1) in your direction to loosen the screw fixing the needle. Remove the needle and insert a new one with the needle scarf (2) to the left [see section (3) or (4)]. Turn the lever (1) back to tighten the screw fixing the needle. ­ Caution!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). 20 6. 9 Changing the needle with double-needle machines 1 2 MA X. Remove the needle and insert new ones with the needle scarf (2) oriented as shown above [see section (3) or (4)]. 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. [. . . ] List of parameters for the operator level is included in the booklet "Efka List of Parameters". 8. 2 Example of machine operation at sewing Pre-selection: · · · · · · · Operation Insert the material. Pedal treading to position -2. Needle down at machine stopping in seam Standard bartacks Double initial bartack Double end bartack Thread trimming on Foot lowered at stopping in seam Foot lifted at seam finishing GB Sewing procedure Machine stopped. Sewing of standard double bartack (at speed pre-selected by producer and subsequent sewing at speed corresponding with third speed level +3. Foot lowering and subsequent machine running to fifth speed grade of sewing. [. . . ]