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10.  윗칼의  조정  /  Adjusting  the  upper  knife

조    정  /  ADJUSTMENT

1.  윗칼설치조정  /  Upper  knife  installation  adjustment

(1)  윗칼세트레버①을  내리고,  미싱풀리를  돌려서  윗칼②을  최하점으로  해주세요.

(2)  2개의  죔나사③를  풀고,  윗칼②의  A부가  침판④  상면에서  0~0.5mm  내려간  위치에서  죔나사③를  체결해주세요.

(1)  Lower  the  upper  knife  set  lever①,  and  turn  the  machine  pulley  to  set  the  upper  knife②  at  the 

        bottom  position.

(2)  Loosen  the  two  set  screw③,  and  then  tighten  them  so  that  part  A  of  the  upper  knife②  is  set 

      a t  a  distance  0~0.5mm  below  the  top  of  the  needle  plate④.

2.  윗칼  전후위치의  조정  /  Upper  knife  front-back  position  adjustment

(1)  다이얼  눈금을  0으로  해주세요.

(2)  윗칼  표준위치는  윗칼②  뒤쪽  끝이  바늘⑤  중심의  앞측에  2mm입니다. 

      윗칼  전후위치의  조정범위는,  죔나사⑥를  풀고,  바늘⑤  중심에서  윗칼②  뒤쪽  끝이  앞측에  2mm,  뒤측에  3mm로

      조정할  수  있습니다. 

(1)  Set  the  upper  feed  scale  to  0.

(2)  The  back  edge  pf  the  upper  knife②  should  be  aligned  with  the  needle⑤  center.  The  upper  knife

        can  be  adjusted  by  loosening  the  screw⑥  and  moving  the  knife  within  a  range  of  2  mm  forward  to

        3  mm  backward.

3.  윗칼  좌우위치의  조정  /  Upper  knife  right-left  position  adjustment

  칼홀더⑦의  죔나사⑧를  풀어,  윗칼②의  측면을  침판④측에  가볍게  밀고,  죔나사⑧를  체결해주세요.

※  윗칼②을  침판④에  너무  세게  누르면  윗칼②이  올라가지  않는  경우가  있기  때문에,  조정  후  윗칼세트레버①를 

      상하  움직여서  윗칼②이  부드럽게  움직이는  것을  확인해주세요.

․     

Loosen  the  set  screw⑧  in  the  knife  holder⑦  and  set  the  side  of   the  upper  knife②  lightly  against

      the  side  of  the  needl e  plate④.  Tighten  the  screw⑧.

※  If  the  upper  knife②  is  forced  too  hard  against  the  needle  pla te④,  the  upper  knife②may  be

      prevented  from  rising.  After  adjustment,  raise  and  lower  the  upper  knife  set  l ever①  to  make  sure  the  upper

      knife②  moves  smoothl y  up  and  down.

Summary of Contents for LS2-H530

Page 1: ...PART BOOK LS2 H530 LS2 H5300 SINGLE NEEDLE SIDE CUTTER LOCK STITCH SEWING MACHINE WITH THREAD TRIMMER 1 OPERATION MANUAL...

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 34 2 40 25 OFF A S A S...

Page 5: ...all the 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 ot...

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: ...6 8 Adjusting the stitch length 6 MECHANICAL DESCRIPTION 7 1 Thread trimmer 7 2 Thread wiper 7 ADJUSTMENT 8 15 1 Adjusting the needle bar height 8 2 Adjusting the rotary hook position 8 3 Adjusting th...

Page 11: ...4 8mm 3 16 6 4mm 1 4 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 th...

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: ...needle raised above the needle plate 2 Upper knife operation To operate the upper knife lower the upper knife set lever The upper knife will now operate in sync with the operation of the machine To s...

Page 14: ...RATION 3 Attaching the needle DB 1 Insert the needle completely making sure that the lengthwise groove of the needle is on the left and secure it using the set screw Use a DBx1 needle 4 Threading the...

Page 15: ...bin case tension spring 3 Pull the thread from the bobbin case tension spring 6 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: ...he 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 id pushed abo...

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: ...een the rotary hook and the rotary hook holder is approx 0 7 0 9mm Set the feed regulating dial to maximum and turn the machine pulley Check that the needle enters the center of the feed dog hole at t...

Page 20: ...epressed fit the indentation of the thread trimming clutch over the roller shaft 3 When the space between the side faces of the thread trimming clutch and the roller shaft is 0 6 0 8mm tighten the scr...

Page 21: ...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 22: ...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 23: ...sition 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 s...

Page 24: ...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 25: ...per feed scale to 0 2 The back edge pf the upper knife should be aligned with the needle center The upper knife can be adjusted by loosening the screw and moving the knife within a range of 2 mm forwa...

Page 26: ...16 4 4 8 8 8 8 4 4 4 6 6 6 2...

Page 27: ...hook timing 8 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 Needl...

Page 28: ...18 4 4 1 4 4 8 8 8 6 6...

Page 29: ...resser 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 rotar...

Page 30: ...20 6 6 6 6 puff 8 11 14 4 13 11 14 11...

Page 31: ...ok stop gap too small Gap Adjust needle to rotary hook timing 8 Improper thread cutting a Needle bobbin threads not cut b Needle thread not cut c Bobbin thread not cut Movable knife fixed knife do not...

Page 32: ...22 6 1 13 6 11 11 11 11...

Page 33: ...read cutter signal not transmitted Check circuits refe to motor adjustment manual Thread wiper does not function Needle thread remainder too long Adjust pretension 6 Timing too early wipes thread befo...

Page 34: ...24...

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