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     작동전  주의사항  /  PRECAUTIONS  BEFORE  STARTING  OPERATION 

        ☞  기계를  작동하기  전에  필히  유수판의  기름을  확인하시고  기름이  없는  상태에서는  절대로  기계를             
              작동하지  마십시오
              Please  check  oil  of  oil  pan  before  sewing  the  machine.  If  the  machine  is  lubricated  by  a  drop,
              never  operate  the  machine  before  lubricating.

        ☞  단상인지  삼상인지  모터에  적혀있는  형식을  확인하시기  바랍니다.
              Verify  the  voltage  and  (single  or  three)phase  with  those  given  on  the  motor  nameplate. 

        ☞  스위치를  켰을  때  손을  풀리  주위나  바늘  아래에  놓지  마십시오.   
              When  turning  the  power  on,  keep  your  hands  and  fingers  away  from  the  area  around  /  under
              the  needle  and  the  area  of  the  pulley. 
       
        ☞  처음  기계를  작동할  때는  발판을  천천히  밟아  주십시오.  무리하게  밟으면  기계에  이상이 
              발생될  수도  있습니다. 
              When  a  new  sewing  machine  is  first  turned  on,  please  pedal  smoothly.  If  you  pedaled  roughly,
              the  machine  can  be  occurred  some  question. 

        ☞  처음  기계를  작동하실  때는  필히  스위치를  켜고,  모터의  회전  방향을  확인하시기  바랍니다.
              When  a  new  sewing  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. 

        ☞  기계를  사용하지  않거나  작업자가  자리를  떠날  경우에는  필히  스위치를  꺼  주시기  바랍니다.
              Power  must  be  turned  off  when  the  machine  is  not  in  use,  or  when  the  operator  leaves  his  /  her 
              seat. 

        ☞  두부를  테이블에  설치하거나,  “V”벨트를  설치하거나  움직일  때,  기계를  조정할  때,  또는  기계를   
              제자리에  놓을  때는  필히  스위치를  꺼주시기  바랍니다.
              Power  must  be  turned  off  before  tilting  the  machine  head,  installing  or  removing  the  "V"  belt,
              adjusting  the  machine,  or  when  replacing. 

        ☞  기계가  작동할  때  풀리나  바늘  근처나  천평커버  안에  손가락을  넣지  마십시오.
              Do  not  insert  fingers  into  the  thread  take-up  cover,  under  /  around  the  needle,  or  pulley  when
              the  machine  is  in  operation. 

        ☞  벨트커버나  손가락  보호장치(천평커버,눈보호  장치)  등과  같은  안전장치  없이는  기계를  작동하지
              마십시오.
              Don't  operate  without  safety  devices(Finger  guard,  Thread  take-up  cover,  Belt  cover,  etc).
         
        ☞  기계의  표면을  신나나  왁스로  닦지  마십시오.
              Do  not  wash  the  machine's  face  by  the  thinner  or  wax. 

        ☞  본  사용설명서는  사정에  따라  예고  없이  내용이  변경될  수  있습니다.
              This  operating  manual  can  be  changed  the  contents  for  some  unavoidable  reasons. 

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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