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SAFETY      INSTRUCTIONS

        This  instruction  manual  and  the  indications  and  symbols  that  are  used  on  the  machine  itself  are

          provided  in  order  to  ensure  safe  operation  of  this  machine  and  to  prevent  accidents  and  injury 

          to  yourself  or  other  people.  the  meanings  of  these  indications  are  given  below.

    Indications 

    Symbols

                      -----------  This  symbol  (△)  indicates  something  that  you  should  be  careful  of. 

                                                    The  picture  inside  the  triangle  indicates  the  nature  of  the  caution  that     

                                                must  be  taken.

                                                      (For  example,  the  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  indicat es  the  nature  of  the  thing  that  must     

                                                be  done.

                                                      (  For  example,  the  symbol  at  left  means"you  must  make  the  ground

                                                          connection".  )

                        

                                 INSTRUCTION MANUAL

★  Thank  you  very  much  for  buying  a  UNICORN  sewing  machine.  Before  using  your  new 

      machine,  please  read  there  safety  instructions  together  with  the  separate  instruction  manual

      for  the  machine.

      With  industrial  sewing  machines,  it  is  normal  to  carry  out  w ork  while  positioned  directly  in  front 

      of  moving  parts  such  as  the  needle  and  thread  take-up  lever,  and  consequently  there  is  always 

      a  danger  of  injury  that  can  be  caused  by  these  parts.  Follow  the  instructions  from  training 

      personnel  and  instructions  regarding  safe  and  correct  operation  before  operating  the  machine 

      so  that  you  will  know  how  to  use  it  correctly

★  Please  keep  this  manual  within  easy  reach  for  quick  reference.

ꍽ 

Safety  indications  and  their  meanings

  The  instructions  which  follow  this  term  indicate  situations  where  failure 

to  follow        the  instructions  will  almost  certainly  result  in  death  or  severe 

injury.
  The  instructions  which  follow  this  term  indicate  situations  where  failure 

to  follow        the  instructions  could  cause  injury  when  using  the  machine  or 

physical                  damage  to  equipment  and  surroundings.

Содержание LT2-H650

Страница 1: ...LT2 H650 LT2 H6500 UNISON LOCK STITCH SEWING MACHINE WITH THREAD TRIMMER OPERATION MANUAL PART BOOK...

Страница 2: ...1...

Страница 3: ...UNICORN sewing machine Before using your new machine please read there safety instructions together with the separate instruction manual for the machine With industrial sewing machines it is normal t...

Страница 4: ...5 off A S 44 2 40 25 OFF A S A S 3...

Страница 5: ...cur install 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...

Страница 6: ...edle 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 during operation and may cau...

Страница 7: ...ician 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 may...

Страница 8: ...UNICORN A S 1 2 3 7 3 2 1...

Страница 9: ...HEAVY MAX SEWING SPEED 2000 SPM MAX STITCH LENGTH 0 9mm NEEDLE BAR STROKE 36mm FEED DOG HEIGHT 1 2mm PRESSER FOOT HEIGHT USING HAND 8mm USING KNEE 16mm NEEDLE TYPE DP 17 20 23 STITCH ADJUSTMENT DIAL L...

Страница 10: ...he installation should be carried out by two or more people Do not connect the power cord until installation is complete otherwise the machine will operate if the treadle is pressed by mistake which c...

Страница 11: ...Set the rubber hinges at the table Set the cushions at the four corners of the oil pan Set the oil pan at the table exactly 3 V INSTALLING THE V BELT 15 20 1 THE ROTATIONAL DIRECTION OF THE MACHINE IS...

Страница 12: ...INSTALLING THE BOBBIN WINDER ATTACH THE BOBBIN WINDER ON THE TABLE WITH TWO SCREWS 4 INSTALLING SPOOL STAND ASSEMBLY ATTACH THE THREAD SPOOL STAND ASSEMBLY AT THE RIGHT REAR CORNER OF THE TABLE WITH T...

Страница 13: ...plenish the oil supply up to the position While operating the machine it is necessary to check the condition of oiling through the oil check window Adjustment of the hook oil lubrication is made by tu...

Страница 14: ...downward Wind the thread around the bobbin a few times in the direction of the arrow and then operate the machine If the thread cannot be wound evenly loosen the thread guide screw and move the thread...

Страница 15: ...ad as shown in FIG Pull out the end of the thread about 50 through the needle eye 4 HOW TO ROUTE THE LOWER THREAD 1 2 3 Pass the end of the thread through the bobbin case slot IN FIG 1 Pass the thread...

Страница 16: ...the counterclockwise by the other hand Holding the lower thread from the underneath of the presser foot and place the lower thread in the back side of needle plate Stop the machine and push the revers...

Страница 17: ...on the reverse lever adjust the eccentric pin to the desired direction Clockwise Increase the stitch length in forward decrease the stitch length in back sewing Counterclockwise Decrease the stitch le...

Страница 18: ...the upper thread to obtain a good even stitch 9 HOW TO ADJUST THE THREAD TAKE UP SPRING 7 10 20 40 The standard operating range of the thread take up spring is 7 10 The operating range of the thread t...

Страница 19: ...by turning the lower thread tension adjusting screw Clockwise The tension is strengthen Counterclockwise The tension is weaken 11 HOW TO ADJUST THE PRESSER FOOT PRESSURE The presser foot pressure can...

Страница 20: ...of the thread through a groove of inside the rotary hook 5 Pass the thread under the tension spring 6 Pass the thread through the clearance between the rotary hook and the bobbin case opener 7 Pull o...

Страница 21: ...made by removing the presser foot throat plate and feed before adjustment S S S 1 2mm Positioning the hook point With the needle at lowermost position mesh the right hand driving gear small with the...

Страница 22: ...eoretically equivalent at the point where the reference line for feed rock shaft crank is aligned with the center of special bolt After adjustment tighten the special bolt 1 6mm 2mm 1 Operating Height...

Страница 23: ...esser bar lifter Loosen the screw in the upper feed lifting rock shaft crank Moving the crank to the left in creases the vertical stroke of presser foot and decreases that of working foot Reversely mo...

Страница 24: ...orms to the direction line 4 Raise the sewing machine and put in the needle 2 ADJUSTING THE CLEARANCE BETWEEN THE NEEDLE AND ROTARY HOOK 0 05 0 2 Loosen the screws and and move the rotary hook saddle...

Страница 25: ...1 1 6mm Rotary hook timing In case of 7 1 Set the stitch length adjusting dial to the position 5 2 Loosen the screws 3EA and turn the rotary hook so that its tip meets the center of the needle when th...

Страница 26: ...in case opener have fully retracted in the direction on the arrow by loosening the screw and moving the bobbin case opener to the right or left 6 ADJUSTING THE FEED DOG HEIGHT l 0 Rotate the pulley un...

Страница 27: ...e needle to its lowest position 6 Allow 13 5mm gap between the pressure bar and the pressure bar Then finger tighten the feed shaft crank screws and 7 Check to see if the right feed shaft crank is con...

Страница 28: ...p is about 0 0 1 between the driving knife and the needle fix the screws A little loosen the bolt screw and the driving knife stopping position 4 If thread is not trim clearly loosen the screw w ith w...

Страница 29: ...driving knife lever absolutely sticks to the two stopper pin fixed at the rotary hook fix the connecting board moved along the arrow as the two screw 3 Fix the stud screw at the ball joint bearing 4...

Страница 30: ...ry hook knife tip FIG2 Put the roller in the cam after pushing and turn the thread trimmer cam to the counterclockwise Fix the screw when the bearing stop at the cam point the tim the driving knife mo...

Страница 31: ...n raise the needle move the screw to the counterclockwise When take down the needle move the screw to the clockwise Adjusting the needle down When raise the needle move the screw to the counterclockwi...

Страница 32: ...31 p28 p27 p27 p30 p29 p29 p14 p14 p14 1 p18 p17 p17...

Страница 33: ...ding parts p29 p14 After trimming needle thread is too long Pretension is insufficient Needle thread tension releasing timing is too advanced Increase spring pressure p14 After trimming needle thread...

Страница 34: ...33...

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