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33

[Fig. 6-10]

6.6) Adjustment of Presser Foot Pressure

6.6.1) Presser Foot Pressure

1) Adjust the presser foot pressure to remain weak if

possible (to the extent that the sewing fabric is

slipped away)

2) Turn the pressure adjusting dial

①

to adjust the

presser foot pressure.

3) When the dial is turned clockwise, the pressure

gets stronger. Otherwise, the pressure gets

weaker.

Stitch Type

Cause

Solution

Balanced good stitch

Stitch skipped, inconsistent stitch length

Puckering

Increase pressure

Decrease pressure

①

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Содержание KM-1170BLX

Страница 1: ...TARTING USE 2 KEEP THIS MANUAL IN SAFE PLACE FOR REFERENCE WHEN THE MACHINE BREAKS DOWN M MM ME E 1 12 20 02 20 01 1 USER S MANUAL KM 1170 SERIES 1 Needle Unison Feed Lock Stitch M C KM 1172 SERIES 2 Needle Unison Feed Lock Stitch M C R S Su un nS St ta ar r C CO O L LT TD D ...

Страница 2: ......

Страница 3: ...h performance powerful operation enhanced durability and more sophisticated design to meet a number of user s needs 2 Please read this user s manual thoroughly before using the machine Make sure to properly use the machine to enjoy its full performance 3 The specifications of the machine are subject to change aimed to enhance product performance without prior notice 4 This product is designed manu...

Страница 4: ...l 21 4 7 Trial run Pedal operation 22 4 8 Machine Stop Position Check 22 4 9 Back tack button thread trimming type 23 4 10 Functional description of function switches 23 4 11 Adjusting Parameter of Sub Thread Adjusting Device 24 4 12 How to Use Dual Tension 24 4 13 Method for Adjustment of a Potentiometer 26 5 Preparations for sewing 27 5 1 Installing needle 27 5 2 Bobbin Insertion and Removal 27 ...

Страница 5: ...usting Device 38 8 3 Adjustment of Feed Dog Position 38 8 4 Height adjustment of feed dog 39 8 5 Adjustment of feed lift shaft cam and lower feed cam 39 8 6 Needle and Hook Timing 40 8 7 Clearance adjustment of hook and opener 41 8 8 Lubrication adjustment of hook 41 8 9 Adjustment of Presser Foot Height 41 8 10 Timing adjustment of the main auxiliary presser foot and needle 42 8 11 Trimmer 43 8 1...

Страница 6: ...he package and wrappings from the top Take special notice on the nails on the wooden boxes ⓑ Dust and moisture stains and rusts the machine Install an airconditioner and clean the machine regularly ⓒ Keep the machine out of the sun ⓓ Leave sufficient space of more than 50cm behind and on the right and left side of the machine for repairing ⓔ EXPLOSION HAZARDS Do not operate in explosive atmosphere...

Страница 7: ... as the control box ⓖ Stop the machine before threading the needle or checking after work ⓗ Do not step on the pedal when turning the power on ⓘ If possible install the machine away from source of strong electrical noise such as high frequency welding machines 1 4 Operating machine Warning Caution Warning Keep motor cover in place before operating turn off power before inspecting or adjusting 1 5 ...

Страница 8: ...se injury Be sure to wait at least 360 seconds before opening this cover after turn off main switch and unplug a power cord 고압 전류에 의해 감전될 수 있으므로 커버를 열 때는 전원을 내리고 전원 플러그를 뽑고 나 서 360초간 기다린 후 여십시오 CAUTION 주 의 Do not operate without finger guard and safety devices Before threading changing bobbin and needle cleaning etc switch off main switch 손가락 보호대와 안전장치 없이 작동하지 마 십시오 실 보빈 바늘교환시나 청소전에는 반드시 주전원의 스위치를...

Страница 9: ...verse Button Function Switches Oil Window Climb Dial Thread Winder Thread Stand Pulley Stitch Length Dial OP Unit and Panel LED Lamp SMPS Control Box Oil Fan Lap Switch Safety Devices Thread Take up Lever Cover Finger Guard Belt Cover Fig 2 1 ...

Страница 10: ...heavy materials For super heavy materials Automatic lubrication type 82 8 1 0 12 40 12 20 Horizontal large hook 2 5x 335 148 Clutch 600W Clutch 600W Servo 750W Servo 750W Servo 750W Servo 750W Basic specifications Basic specifications Basic specifications Basic specifications Basic specifications Basic specifications Basic specifications Basic specifications Basic specifications Basic specificatio...

Страница 11: ... Max Sewing speed RPM Intersection of presser foot 3 500 3 000 3 200 3 000 2 900 2 600 2 400 2 200 1 800 3 000 2 800 2 600 2 400 2 200 2 000 1 800 2 800 2 600 2 400 2 200 2 000 1 800 1 600 2 000 1 900 1 800 1 750 1 700 1 650 1 600 3 5 under 3 5 4 0 4 0 4 5 4 5 5 0 5 0 5 5 5 5 6 0 6 0 above 1 Max RPM priority is limited to low RPM 2 Figures in parenthesis refer to the normal RPM 3 No speed control ...

Страница 12: ...e to press the lower part of the board leg of the machine or the whole body of machine falls backwards leading to physical injuries Fig 4 1 Fig 4 2 Fig 4 3 Only trained technicians should install and wire up the machine The machine weighs over 50 kg More than two persons should install the machine Do not plug in the machine until installation is completed If the operator mistakenly steps down on t...

Страница 13: ...le drawing Please use the table provided by Sunstar When using self made table the thick of table should be more than 40mm Please use table strong enough to sustain the weight of the machine Fig 4 4 Non trimming ...

Страница 14: ...14 Fig 4 5 Thread trimming ...

Страница 15: ...re hinge rubber spacer and bed support rubber spacer It is recommended for the bed to be positioned 2 3mm over the table 4 5 2 Presser Foot Lift Cylinder Bracket Fix the presser foot lift cylinder bracket under the table as in the figure using the M8 hexagonal bolt 4 5 3 Oil Fan Fix the oil pan inside the accessory box with M4 hexagon socket headless bolt under the table like the figure Attach the...

Страница 16: ...g a bolt and then fix it to the upper part of the rear arm using a bolt Optional Fix the OP bracket to the table face using a tapping screw 4 5 6 Control Box and LED Lamp SMPS Attach the control box and the LED lamp SMPS beneath the right side of the table using screws and fix them at the places as in the figure Option Specification Fig 4 9 Fig 4 10 Fig 4 11 21 5mm 90mm ...

Страница 17: ...bed of the sewing machine and tightly fasten them using the screw 2 As shown in figure 4 14 put the hinge into the hinge rubber on the table laying the and put down the sewing machine on the bed support rubber 3 Insert the machine body sustaining pole into table completely If the pole is not inserted completely that may cause accidents because the pole cannot sustain the weight of machine body fir...

Страница 18: ... hole Fig 4 15 2 V Belt Drive Motor Specifications Install the motor and sufficiently loosen the fixing nuts Then due to the weight of the motor tension is generated at the belt Fix the fixing nut in this position and then tightly fasten the fixing nut Adjust the tension of the belt to make the belt pressed 10mm when the center is pressed by a finger as in the figure and tightly fasten the fixing ...

Страница 19: ...iption of label symbols Label Sign Classification Function S1 S2 S3 S4 S5 S6 S7 S8 Backtack Trimming Hem height difference Stitch length conversion Thread release Main Thread release Sub Presser foot Seam Center Guide Add the initial and last backtack sewing function and perform reverse sewing Perform trimming When the cylinder is in motion sewing is performed using the higher value of the two cli...

Страница 20: ...ing diagram by model Fig 4 20 KM 1170BLXH KM 1172BLXH KM 1170BLX 7 KM 1172BLX 7 KM 1172BLX 7 Option Ⓐ S5 Terminal S5 S5 Terminal S5 Ⓑ Ⓐ Ⓑ S1 S2 S3 S4 S5 S6 S7 S1 S2 S3 S4 S6 S7 S9 S1 S2 S3 S4 S6 S7up S7down S9 S1 S2 S3 S4 S5 S6 S7 S6 S9 S8 S1 S2 S3 S4 S6 S7 S1 S2 S3 S4 S6 S7up S7down Ⓐ S5 Terminal S5 Ⓑ S1 S3 S4 S5 S6 S7 S1 S3 S4 S6 S7 S1 S3 S4 S6 S7up S7down ...

Страница 21: ...the machine at the rate of 2 000spm during four or five days after starting to use it then machine performance will continue to be in best shape 4 6 Supplying oil Operate the machine only after supplying oil when the machine is used for the first time or has been left unused for a long time Only use genuine lubricant of this company Lubricant is in the accessory box Caution Plug in only after oil ...

Страница 22: ...n the position is wrong adjust the mounted magnetic holder of the N D imprinted poly from side to side Fig 4 27 4 7 Trial run Pedal operation 1 Press pedal lightly to the position of B to check if the machine is operating low speed sewing 2 Press pedal to the position of C to check if the machine is operating high speed sewing 3 Press pedal backward and forward And then put the pedal at neutral po...

Страница 23: ...last backtack sewing function 3 Presser bar overlapping change switch When pressing the switch the lamp is on Then the presser bar overlapping volume is changed to the value set at the top cover dial B When pressing it again the lamp is off Then the value set at the top cover dial A becomes the presser bar overlapping volume 4 Supplementary thread tension switch When the switch is not pressed the ...

Страница 24: ... adjusting device enables users to easily increase the tension of the upper thread according to the sewing material height difference and conditions For two needle model if a dual tension individual operating type optional is used the left and right tension of the upper thread can be independently adjusted while sewing materials with height difference on the left and right sides The sub thread adj...

Страница 25: ...g 4 2 Optional Specifications When sewing the materials with different height on left and right sides the independently operating optional dual tension can be used to get the best sewing quality As in Figure 4 26 when sewing the materials with different height on left and right sides upper thread tension should be given differently to the left and right sides to get the best sewing quality As such...

Страница 26: ...play area remains fixed Details Screen display How to operate Turn on the power Press button then press button while holding down button to change screen No 1 2 3 4 5 11 Set the the adjustment dial for mutual overlapping portion of presser foot to 4 mm and press the key then the screen is automatically changed with the buzzer sound Set the the adjustment dial for mutual overlapping portion of pres...

Страница 27: ...the reverse order of the bobbin removal Fig 5 2 1 Turn the pulley of machine to raise needle bar to its highest position 2 Unfasten the fixing screw 3 Place the long groove of the needle to the opposite direction of fixation screw and push it into the end of inside as shown in the figure then tighten the screw 5 2 Bobbin Insertion and Removal Fig 5 1 Always turn off the power when mounting a needl...

Страница 28: ...e starts to operate and thread winds on bobbin 7 When thread winding is done bobbin operating plate returns automatically 8 Remove bobbin and cut thread with bobbin winder knife To adjust the amount of bobbin winding loosen screw and adjust bobbin winder adjusting plate 90 Fig 5 3 Make sure not to touch or press down parts that are operating or moving during thread winding Failure to follow the sa...

Страница 29: ...l start automatically and can cause severe injuries When inserting upper thread When replacing bobbin or needle When the machine not in use or the operator leaving the work place Caution 6 2 Adjusting thread tension Sewing Type Cause Troubleshooting Good sewing in balance Upper thread tension is too weak Lower thread tension is too strong Upper thread tension is too strong Lower thread tension is ...

Страница 30: ...sion and turn it counter clockwise to decrease the tension Fig 6 3 6 2 3 Main thread adjusting device 1 The tension of the main thread adjusting devices should be set at the minimum as possible 2 Loops should be created at the center of the sewing material Make sure that thread break does not occur on the ultra light material due to strong thread tension 3 Adjust the main thread adjusting devices ...

Страница 31: ...ation of thread adjusting device The main and supplementary thread adjusting devices are automatically in operation When trimming or auto presser bar lift is activated the tension of the main and supplementary thread adjusting devices is released The supplementary thread adjusting devices can be turned on off with the functional switch Fig 6 6 Fig 6 7 6 3 Adjusting upper thread length after trimmi...

Страница 32: ...ing to the set value In addition during the sewing process when the hem height difference is high the lap switch can be used When the lap switch is pressed the set value at the dial becomes the overlap value of the presser feet When the lap switch is pressed once again the overlap value is converted back into the value of the dial Fig 6 8 Fig 6 9 The set value of the stitch length dial should be a...

Страница 33: ...extent that the sewing fabric is slipped away 2 Turn the pressure adjusting dial to adjust the presser foot pressure 3 When the dial is turned clockwise the pressure gets stronger Otherwise the pressure gets weaker Stitch Type Cause Solution Balanced good stitch Stitch skipped inconsistent stitch length Puckering Increase pressure Decrease pressure ...

Страница 34: ...achine is not in use for a long time clean according to the following way before using the sewing machine Caution 7 1 Regular Check Points 1 Cleaning lubrication and grease supply for particular areas should take place on a regular basis to keep the machine at the best conditions 2 Check the tension of each driving belt 3 When the regular checks are not properly performed the following problems mi...

Страница 35: ...uency and Method NO Required Parts for Cleaning Around Hook Thread take up lever thread tension adjusting device Treatment of Waste Oil Around of moving blade and fixed blade Please remove dust on the moving and fixed blade under the needle plate with air Daily Once a week Once a month Three times a week 1 2 4 3 Cleaning Frequency 1 Make sure to turn off the power of the machine before cleaning 2 ...

Страница 36: ...Low Fig 7 2 7 3 3 Checking 1 If the needle is deformed or the edge is damaged replace the needle with new one See 5 1 Needle Installation 2 Check if upper thread is inserted correctly Refer to 5 4 Inserting upper thread 3 Run trial sewing Fig 7 3 1 Make sure that lubricant does not move above the HIGH line If not lubricant might leak When oil supply is completed tightly fasten the oil tank entranc...

Страница 37: ...Thread Take up Spring B Loosen the fixation screw and turn the adjusting collar in a clockwise direction to decrease the tension of spring and turn it counter clockwise to increase the tension Fig 8 1 For machine maintenance and repair consult with qualified technicians For electrical maintenance and repair consult with qualified technicians or agencies When safety devices are disassembled make su...

Страница 38: ...he switch connection rod moves when the upper shaft pulley is turned 3 When the switch connection rod moves loosen the switch connection crank fixing screw and adjust the angle of the switch by using the angle adjusting hole of the switch 4 When the upper shaft pulley is turned and the switch connection rod does not move completely fix all fixing screws 8 3 2 Feed Dog Position on Needle Plate When...

Страница 39: ...d tightly fasten the fixing screw 8 5 Adjustment of feed lift shaft cam and lower feed cam 1 After setting up the stitches at the minimum put the needle bar at the lowest position 2 Adjust the direction of the second screw on the feed lifting cam to the vertical upward and tighten it firmly 3 Lift the needle bar to the highest point 4 Adjust the direction of the first screw on the lower feed cam t...

Страница 40: ...t the center of the needle and tightly fasten the fixing screw for the lower shaft collar 8 6 2 Clearance adjustment between needle and hook 1 Loosen two hook base screws and lower shaft collar screw and adjust the space between the needle and the hook blade to 0 1mm by adjusting the position of the hook base 2 Adjust the position and tighten firmly each fixed screw 8 6 3 Adjustment of Hook Needle...

Страница 41: ...er racing the sewing machine for three minutes secure the oil flow checking paper on the right side of the hook and run the machine at a maximum speed for ten seconds You may use any type of paper As shown in the figure check the oil tape marked on the paper 8 8 2 Adjustment of the oil supply level Make the adjustment when the quantity of oil supply is not adequate a Take off the sliding plate lef...

Страница 42: ...turn the machine until the needle tip and the upper part of the feed dog come to meet on the surface of the needle plate 4 As in 2 above make the main and subordinate presser feet contact the needle plate at the same time and after that tightly fasten the tightening screw to finish the adjustment 5 After adjustment place back the rubber cap on the upper lid 8 10 3 Timing adjustment of the main aux...

Страница 43: ...ure B and conducts a rotary movement toward the opener after passing above the bobbin 2 As in Figure C the trimmer cam conducts the rotary movement and the trimmer roller lever contacts the cam At this moment the moving blade holds the lower and upper threads as in Figure D and performs rotary movement toward the fixed blade 3 When the trimmer roller lever and the trimmer cam s hole are in a line ...

Страница 44: ... too weak then tighten the screw firmly Fig 8 19 24mm 8 11 2 Adjustment of Moving Blade The moving blade moves the upper and lower threads to the point of the fixed blade At this time the moving blade rotates while it does not touch the bobbin case and trimming occurs through its contact with the fixed blade Blades can be adjusted as follows 1 Loosen the moving blade fixing screw to the extent tha...

Страница 45: ...m do not contact each other To make it sure adjustment can be conducted as follows 1 Loosen three trimmer cam fixing screws and the trimmer lever tightening screw 2 At the top of the thread take up lever adjust the cam to make the opener shaft center the setting hole of the thread trimming cam and the thread trimming lever roller center located on the same line as shown in the figure A At this mom...

Страница 46: ...ition Bent needle or broken needle tip Thread passing at wrong position Wrong timing of needle and hook Wrong timing of needle and hook Wrong timing of needle and hook Remaining length of upper thread is short Due to bobbin racing during trimming lower thread dropping from bobbin case becomes too short to go up Unable to lift lower thread due to weak take up lever spring Reinsert the needle correc...

Страница 47: ...roove of movable and fixed blades Wrong needle insertion Insufficient crossing quantity of movable and fixed blade Too strong upper thread tension Too thick a needle for thread Take up lever pulls out the upper thread because the needle up and down position is too high Reduce tension of upper thread Increase tension of lower thread Increase upper thread tension Decrease tension of lower thread Adj...

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