User manual BERNINA 2500DCET

[. . . ] Overlocker / Serger Instruction Manual 2500DCET Umschlag_GB. indd 1 10. 10. 2007 16:18:59 Uhr 2500_DCE_1_englisch_neu 09. 10. 2007 14:32 Uhr Seite 3 Safety Instructions IMPORTANT SAFETY INSTRUCTIONS 3 When using an electrical appliance, basic safety precautions should always be followed, including the following. Read all instructions before using this overlock sewing machine. 11. Do not operate where aerosol (spray) products are being used or where oxygen is being administered. To disconnect, turn all controls to the off («0») position, then remove plug from outlet. [. . . ] It is perfect for hems, top stitching, flat joining seams and edging with elastic and bindings. Stitch selection dial / position H To select cover stitch turn the stitch selection dial to position H. The sewing speed on position is automatically reduced from 1500 s. p. m. The cover stitch formation ends with the needle inserted in the fabric. Note: When sewing is completed or interrupted, the needles stay in the fabric. To remove your work, raise the needles by turning the handwheel backwards, i. e. WARNING: If sewing in top & bottom cover stitch mode, when lifting the presser foot to its highest position (2), do not use any force. 39 1 Looper conversion arm · Lower the needle clamp, press Needle stop. · The looper conversion arm can now be moved from overlock to cover/chain stitch or from cover/chain stitch to overlock (1). When the conversion arm is switched from overlock to cover/chain stitch, the upper looper is released and the movement of the lower looper becomes elliptic. When the conversion arm is switched from cover/chain stitch to overlock, the upper looper is reinstated and the lower looper moves left and right. 2500_DCE_1_englisch_neu 09. 10. 2007 14:35 Uhr Seite 40 Cover/chain stitch functions and general operating instructions Mechanical safety In addition to the electronic safety features (page 14) your machine is equipped with mechanical safety features. The looper cover can only be closed when: · the position of the conversion arm corresponds to the cover/ chain stitch extension plate or the knife guard (overlock) · the upper knife is in the raised position when the cover/ chain stitch extension plate is attached. 1 Upper knife arm The knives are not used for cover and chain stitch and the upper knife arm is raised to provide additional space to the right of the needle. 3 40 2 Raising the upper knife arm: · (looper cover open) · Raise the upper knife. · Press the screw to the left (2), push the arm up (3) and the screw engages on the right (4). · Tighten the screw. 4 Lowering the upper knife arm: · (looper cover open) · Loosen the screw and press to the left (5). (Close looper cover. ) Note: See page 20 for raising and lowering the upper knife. 5 6 7 © Copyright 1999 by BERNINA International AG, Steckborn Umschlag_GB. indd 2 10. 10. 2007 16:19:00 Uhr 99/6 GB 2500_DCE_2_englisch_neu 09. 10. 2007 14:59 Uhr Seite 41 Cover/chain stitch functions and general operating instructions Knife guard /cover and chain stitch extension plate When the machine is converted to cover/chain stitch, the knife guard in the looper cover is replaced by the cover stitch extension plate. The extension plate covers the released upper looper and extends the stitch plate to the right of the presser foot. To replace: Open the looper cover. To attach the extension plate, hold it at a slight angle to the looper cover, position (1), hold both parts parallel and push the plate to the right until it clicks into place. Note: The looper cover will not close and the machine will not sew when: · the position of the conversion arm does not correspond to the extension plate (cover/chain stitch) or knife guard (overlock) · the upper knife is not in the raised position when the cover stitch extension plate is attached · the selection lever is in roll hem position. 41 1 2500_DCE_2_englisch_neu 09. 10. 2007 14:59 Uhr Seite 42 Threading 4 thread cover stitch (position F) Cover stitch looper (purple markings) 1 Place the spool on the spool pin as illustrated. 2 2 1. Bring the thread up from the spool and lay it from the back to the front into the guide. Push the autothreader lever up and it will return to its normal position. Leave the thread end (8 cm or 3") hanging in the machine. 3 42 42 42 11 10 5 7 6 4 8 9 2500_DCE_2_englisch_neu 09. 10. 2007 15:00 Uhr Seite 43 Threading 4-thread cover stitch Cover stitch needle R (brown markings) 1 Place the spool on the spool pin as illustrated. 2 2 2 2 3 5 6 7 4 1. Bring the thread up from the spool and lay it from the back to the front into the guide. Take the thread under the thread guide plate, through the take up and into the guide. Thread the needle R from front to back and lay the thread to the left under the foot. 43 8 8 2500_DCE_2_englisch_neu 09. 10. 2007 15:00 Uhr Seite 44 Threading 4-thread cover stitch Cover stitch needle C (green markings) 1 Place the spool on the spool pin as illustrated. 2 2 44 3 5 6 7 4 1. [. . . ] Remove the knife guard and attach the cover/chain stitch extension plate. Insert needles in the appropriate cover/chain stitch positions (tools in looper cover). Thread cover/chain stitch looper (purple markings) leaving 8 cm or 3" of thread hanging in the machine. Thread cover or chain stitch needles, place threads under the presser foot. [. . . ]