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11.  고정칼과 이동칼의 설치방법  /  Removing the  fixed  and movable knives

조    정  /  ADJUSTMENT

1.  고정칼의  빼내는  방법  /  Removing  the  fixed  knife

◎  실의  잘림이  나쁘게  되었을  때  고정칼④을  위의  그림과  같이  갈아주십시오.

    (If  the  knife  ④  becomes  dull,  sharpen  it  as  shown  in  the  figure  above.)

1  전원스위치를  OFF  해주십시오.  (Turn  off  the  power.)

2.  미싱을  눕혀주십시오.  (Tilt  the  machine  head  until  it  stops.)

3.  죔나사①을  풀어내고,  밑실처리판②를  빼내어주십시오.  (Remove  the  screw  ①  and  the  lower  thread 

finger  ②.)

4.  접시나사③을  풀어내고,  고정칼④을  빼내어주십시오.  (Remove  the  screw  ③  and  the  fixed  knife  ④.)

1.  이동칼의  빼내는  방법  /  Removing  the  movable  knife

1.  올림대로  노루발을  올려주십시오.  (Raise  the  presser  foot  using  the  presser  bar  lifter.)

2.  침판나사⑤를  풀고,  침판⑥을  빼내어  주십시오.  (Remove  the  screw  ⑤  and  the  needle  plate  ⑥.)

3.  죔나사⑦를  풀고,  톱니⑧를  빼내어  주십시오.  (Remove  the  screws  ⑦  and  the  feed  dog  ⑧.)

4.  접시나사⑨를  풀고,  보조침판

을  빼내어  주십시오.

      (Remove  the  screws  ⑨  and  the  auxiliary  needle  plate  ⑩.)

5.  미싱풀리를  돌리고,  침봉을  최상위치에서  고정해  주십시오. 

      (Turn  the  machine  pulley  until  the  needle  bar  reaches  its  highest  position.)

6.  사절연결로드⑦을  손으로  화살표  방향으로  누르고,  고정나사⑧의  보이는  위치에서  고정해주십시오.

      (Press  the  th  read  trimming  rod  ⑪  by  hand  in  the  direction  of  the  arrow  until  the  screw  ⑫  can

        be  seen.)

7.  침판나사⑧을  풀고,  이동칼⑨을  빼내어  주십시오.  (  Remove  the  screw  ⑫  and  the  movable  knife  ⑬.)

주1)  침판⑥  및  이동칼⑨을  빼내었을  때는,  바늘을  빼내어  주십시오.

          (Before  removing  the  needle  plate  ⑥  and  the  movable  knife  ⑬,  remove  the  needle)

주2)  설치는  역순서로  해주십시오.  (Reassembly  is  performed  by  reversing  the  above  procedure.)

Summary of Contents for LS2-H520

Page 1: ...LS2 H520 LS2 H5200 SINGLE NEEDLE NEEDLE FEED LOCK STITCH SEWING MACHINE WITH THREAD TRIMMER 1 OPERATION MANUAL PART BOOK...

Page 2: ......

Page 3: ...symbol at left means beware of injury This symbol indicates something that you must not do This symbol indicates something that you must do The picture inside the circle indicates the nature of the t...

Page 4: ...5 off A S 33 2 40 25 OFF A S A S...

Page 5: ...belt covers to the machine head and motor Be sure to wear protective goggles and gloves when handling the lubricating oil and grease so that they do not get into your eyes or onto your skin otherwise...

Page 6: ...placing the bobbin and needle when not using the machine and when leaving the machine unattended For machines with automatic presser lifter do not touch the solenoid section because if becomes hot dur...

Page 7: ...rician to carry out any maintenance and inspection of the electrical system Turn off the power switch and disconnect the power cord from the wall outlet at the following times otherwise the machine ma...

Page 8: ...act your nearest UNICORN dealer The positions of the labels may vary slightly depending on the model of sewing machine or motor 1 2 Be sure to connect the ground If the ground connection is not secure...

Page 9: ...ing machine is first turned on verify the rotational direction of the pulley with the power on The pulley should rotate counterclockwise when viewed from the pulley Power must be turned off when the m...

Page 10: ...L DESCRIPTION 7 1 Upper shaft and needle bar mechanism 7 2 Thread wiper 7 ADJUSTMENT 8 16 1 Adjusting the needle bar height 8 2 Adjusting the rotary hook position 8 3 Adjusting the rotary hook holder...

Page 11: ...1 How to install the belt V V 13mm 16mm Tilt back the machine head and place the belt onto the motor pulley and machine pulley Press belt with a finger force of 5 N and adjust the nut so that there is...

Page 12: ...he oil cover Screw Wipe off any contamination from the magnet and the oil pan Use the oil specified by Spindle15 2 Adjusting lubrication for upper shaft and rotary hook 1 1 Upper shaft lubrication Rem...

Page 13: ...he machine with the needle tip below the needle plate when the needle position switch is set to the needle down position Back treadle the pedal to position and release it to neutral to trim the thread...

Page 14: ...4 OPERATION 3 Threading the needle...

Page 15: ...bin case tension spring 3 Pull the thread from the bobbin case tension spring 5 Winding the bobbin thread 1 2 3 4 1 Fit the bobbin in the bobbin winder shaft 2 Depress the joint as far as it will go 3...

Page 16: ...tension at this time is 25 30g To adjust the operation range of the thread take up spring loosen the set screw and turn the thread tension bracket assembly To adjust the tension of the thread take up...

Page 17: ...turned on the thread trimming solenoid activates pressing the thread trimming cam lever stud The roller shaft of the thread trimming cam lever assembly secured by the thread trimming cam lever stud i...

Page 18: ...rejector needle bar bush Then firmly tighten the screw A 0 0 5mm 0 0 05mm Align the bottom reference line of the needle bar with surface A of the needle bar oil rejector needle bar bush by turning the...

Page 19: ...heck that the needle tip is as indicated below For thin materials The needle tip is aligned with tips of the feed dog and the upper surface of the needle plate For thick materials There is a 5mm gap b...

Page 20: ...parallel loosen the screw of the needle feed arm then move the needle bar bracket forward or backward 2 Feed dog position Set the feed regulating dial to maximum and turn the machine pulley Check that...

Page 21: ...m 3 0 6 0 8mm 4 0 5mm 40Kg 1 Loosen the screw and turn the machine pulley until the needle bar is raised 5 mm above its lowest position then depress the thread trimming solenoid 2 With the thread trim...

Page 22: ...the indentation of the thread trimming clutch 3 With the thread trimming solenoid depressed turn the machine pulley Adjust the movable knife and the fixed knife so that they overlap when the rotation...

Page 23: ...ve the feed bracket up or down 1 2 2 90 1 When the feed dog is fully raised its angle is properly adjusted if the circle on the feed bracket shaft aligns with the index on the feed rock shaft arm 2 To...

Page 24: ...ard and backward at the inching speed 215 spm 3 Adjust as follows when the forward and backward stitch lengths are different 1 Remove the rear plate 2 Loosen the screw 3 When the forward stitch length...

Page 25: ...osition there should be a 9 5 11 5 mm gap between the upper surface of the needle plate and the needle tip with thin or medium materials or a 10 12 mm gap with thick materials If adjustment of needle...

Page 26: ...Raise the presser foot using the presser bar lifter 2 Remove the screw and the needle plate 3 Remove the screws and the feed dog 4 Remove the screws and the auxiliary needle plate 5 Turn the machine p...

Page 27: ...17 4 4 16 15 15 15 4 4 4 6 6 6 2...

Page 28: ...y hook timing 15 Thread wiper too high Thread wiper position Adjust thread wiper position with screw Thread breakage Improper threading Threading Rethread 4 Bent needle Blunt needle tip jammed eye Nee...

Page 29: ...19 4 4 1 4 4 15 15 15 6 6...

Page 30: ...esser foot contact Presser bar pressure Tighten presser foot adjustment screw Presser bar height Adjust presser bar height Improper needle to rotary hook timing Needle bar rise Adjust needle to rotary...

Page 31: ...21 6 6 6 6 puff 15 19 23 4 22 19 23 19...

Page 32: ...ok stop gap too small Gap Adjust needle to rotary hook timing 15 Improper thread cutting a Needle bobbin threads not cut b Needle thread not cut c Bobbin thread not cut Movable knife fixed knife do no...

Page 33: ...23 6 1 22 6 24 24 24 24...

Page 34: ...ead cutter signal not transmitted Check circuits refer to motor adjustment manual Thread wiper does not function Needle thread remainder too long Adjust pretension 6 Timing too early wipes thread befo...

Page 35: ...25...

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