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CONTENTS
Ⅰ. EXPLANATION OF LK-1900AN, COMPUTER-CONTROLLED HIGH-SPEED
BARTACKING MACHINE 1 ..............................................................................................
[1] SPECIFICATIONS 1 .....................................................................................................................................
[2] CONFIGURATION 2 .....................................................................................................................................
1. Names of main unit 2 ................................................................................................................................................
2. Names and explanation of switches on the operation panel 3 ............................................................................
[3] INSTALLATION 4 .........................................................................................................................................
1. Installing the electrical box...................................................................................................................................4
2. Attaching the connecting rod 4 ...............................................................................................................................
3. Installing the head support rod 4 ............................................................................................................................
4. Installing and connecting the power switch 5 .......................................................................................................
5. How to carry the sewing machine 6 ........................................................................................................................
6. Installation of the sewing machine head 6 .............................................................................................................
7. Installing the drain receiver and the head support rubber 7 ................................................................................
8. Safety switch 7 ..........................................................................................................................................................
9. Tilting the sewing machine head 8 .........................................................................................................................
10. Installing the operation panel 8 ...............................................................................................................................
11. Connecting the cord 9 ..............................................................................................................................................
12. Managing the cord 10 ...............................................................................................................................................
13. Installing the eye protection cover .................................................................................................................... 11
14. Installing the thread stand .................................................................................................................................. 11
[4] OPERATION OF THE SEWING MACHINE 12 ............................................................................................
1. Lubrication ...........................................................................................................................................................12
2. Attaching the needle 12 ...........................................................................................................................................
3. Threading the machine head 13 ..............................................................................................................................
4. Installing and removing the bobbin case 13 ..........................................................................................................
5. Installing the bobbin 14 ............................................................................................................................................
6. Adjusting the thread tension 14 ..............................................................................................................................
7. Adjusting the thread take-up spring 15 ..................................................................................................................
8. Example of the thread tension 15 ...........................................................................................................................
[5] OPERATION OF THE SEWING MACHINE (BASIC) 16 ..............................................................................
1. Item data setting 16 ..................................................................................................................................................
2. Checking the contour of a sewing pattern 18 ........................................................................................................
3. Sewing ..................................................................................................................................................................19
4. Change to the other sewing pattern 19 ..................................................................................................................
5. Winding a bobbin 20 .................................................................................................................................................
6. Thread clamp device 21 ...........................................................................................................................................
[6] OPERATION OF THE SEWING MACHINE (ADVANCED) 23 .....................................................................
1. Performing sewing using the pattern keys ( , , , and ) 23 ........................................
2. Performing sewing using the combination function 26 ........................................................................................
3. Performing sewing using the “bobbin thread counter” 28 ...................................................................................
4. How to use the temporary stop 28 ..........................................................................................................................
5. Setting the pattern thread tension 29 .....................................................................................................................
6. Cautions in operation 30 ..........................................................................................................................................
[7] MAINTENANCE 30 ......................................................................................................................................
1. Adjusting the height of the needle bar 30 ..............................................................................................................
2. Adjusting the needle-to-shuttle relation 31 ............................................................................................................
3. Adjusting the lift of the work clamp foot 32 ...........................................................................................................
4. The moving knife and counter knife 32 ..................................................................................................................
5. Needle thread clamp device 33 ...............................................................................................................................
6. Adjustment of the wiper 33 ......................................................................................................................................
7. Draining waste oil 34 ................................................................................................................................................
8. Amount of oil supplied to the hook 34 ...................................................................................................................
9. Replacing the fuse 34 ...............................................................................................................................................