SunStar KM-1070 SERIES User Manual Download

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USER S MANUAL

KM-1070 SERIES

1-Needle, Unison Feed
Lock Stitch M/C

KM-1072 SERIES

2-Needle, Unison Feed
Lock Stitch M/C

Summary of Contents for KM-1070 SERIES

Page 1: ...USER S MANUAL KM 1070 SERIES 1 Needle Unison Feed Lock Stitch M C KM 1072 SERIES 2 Needle Unison Feed Lock Stitch M C R ...

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Page 3: ...e 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 manufactured and...

Page 4: ... Body 13 4 6 Supplying oil 18 4 7 Trial run Pedal operation 19 4 8 Machine Stop Position Check 19 4 9 Back tack button thread trimming type 20 4 10 Functional description of function switches 20 4 11 Adjusting Parameter of Sub Thread Adjusting Device 21 4 12 How to Use Dual Tension 21 5 Preparations for sewing 23 5 1 Installing needle 23 5 2 Bobbin Insertion and Removal 23 5 3 Winding lower thread...

Page 5: ...djustment of Feed Dog Position 33 8 4 Height adjustment of feed dog 34 8 5 Adjustment of feed lift shaft cam and lower feed cam 34 8 6 Needle and Hook Timing 35 8 7 Clearance adjustment of hook and opener 36 8 8 Lubrication adjustment of hook 36 8 9 Adjustment of Presser Foot Height 36 8 10 Timing adjustment of the main auxiliary presser foot and needle 37 8 11 Trimmer 38 8 12 Safety Clutch 40 9 C...

Page 6: ...e the 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 atmospheres To ...

Page 7: ...es such 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...

Page 8: ...8 Caution 1 3 2 1 7 Contents of marks Warning Caution mark is attached on the machine for safety When you operate the machine follow the directions on the mark 1 6 Caution mark position ...

Page 9: ...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 LED Lamp Safety Devices Thread Take up Lever Cover Finger Guard Belt Cover Fig 2 1 ...

Page 10: ...ifications Basic specifications Basic specifications Basic specifications Basic specifications Basic specifications Basic specifications Basic specifications Basic specifications Basic specifications Basic specifications 3 500 P 1 7mm 2 000 P 8 12mm DP 35 12 23 134 35 Nm80 160 DP 35 22 25 134 35 Nm140 200 2 800 P 1 7mm 1 600 P 8 12mm 2 000 P 1 7mm 1 600 P 8 12mm Presser Foot life The speed is vari...

Page 11: ...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 the...

Page 12: ...4 4 Table 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 ...

Page 13: ... at the grooves on the table using nails 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 Find the oil fan in the accessory box and attach it aligned with the presser foot lift cylinder bracket using screws Fig 4 5 Fig 4 6 Fig 4 7 ...

Page 14: ... the bracket using 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 Fig 4 8 Fig 4 9 Fig 4 10 ...

Page 15: ...djust 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 nut 4 5 8 Sewing Machine Body 1 Place the two hinges on the rear bed of the sewing machine and tightly fasten them using the screw 2 Settle the hinge on the hinge rubber of the table and place the sewing machine body on the bed base rubber 3 Insert the m...

Page 16: ...ghr than 0 3Mpa 4 5 12 Description of label symbols Label Sign Cylinder 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 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...

Page 17: ...the thread spool stand assembly onto the table using washer and nut on the right side Fig 4 16 4 5 13 Pnematic wiring diagram by model KM 1070BLX KM 1072BLX KM 1072BLXH KM 1072BLX 7 Option Button switch cable KM 1070BLX 7 KM 1070BLXH 7 KM 1070BLXH ...

Page 18: ...machine at the speed of 2 000 spm per minute for the first four to five days of operation and use the machine at the normal speed afterwards Then it is able to keep the machine at the best conditions 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 ...

Page 19: ...not correct the position of the magnetic holders embedded in the N D punched marks of the pulley should be moved left or right for readjustment Fig 4 22 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 for...

Page 20: ... The switch selects the addition or deletion of the initial and 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 Supplem...

Page 21: ...l at even stitch length 2 Sub Thread Adjusting Device The sub thread 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 w...

Page 22: ...ing 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 su...

Page 23: ...n be inserted in 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 As in the figure insert needle straight to the end with the needle s long groove facing left and fasten the fixing screw firmly 5 2 Bobbin Insertion and Removal Fig 5 1 Always turn off the power when mounting a needle If the pedal i...

Page 24: ...chine 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 Fig 5 3 Make sure not to touch or press down parts that are operating or moving during thread winding Failure to follow the s...

Page 25: ...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 to...

Page 26: ...unter clockwise the tension weakens 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 to create stitches at r...

Page 27: ...Operation 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 tr...

Page 28: ...presser foot and the sub presser foot overlap according 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...

Page 29: ...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 ...

Page 30: ...water with soap when they are smeared with lubricant If lubricant is in the eye instantly wash it with running water and see a doctor Never drink lubricants since they can cause vomiting or diarrhea Go to see a doctor if you mistakenly drink lubricant Keep the oil out of the reach of children Keep the oil away from heat Use both hands when bending the machine backwards or returning it to the origi...

Page 31: ... that lubricant does not overflow Fig 7 2 7 1 3 Checking 1 When needle is deformed or the end of needle is damaged change the needle 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 entrance scr...

Page 32: ... clockwise Then the thread take up spring s operation timing gets faster Otherwise the operation timing gets slower The operation timing of the thread take up lever spring is standard when the stopper screw is at the center of the guide plate Fig 8 1 Fig 8 2 Fig 8 3 For machine maintenance and repair consult with qualified technicians For electrical maintenance and repair consult with qualified te...

Page 33: ...es 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 the stitch length is maximum the feed dog position in the needle plate hole should be identical from the...

Page 34: ...ht to be 0 5mm 5 When adjustment is completed tightly fasten the fixing screw 8 5 Adjustment of feed lift shaft cam and lower feed cam 1 Set the stitch count at maximum and pull down the needle bar at the lowest point 2 Make the second fixing screw of the feed lift shaft cam move vertically and tighten the fixing screw 3 Lift the needle bar to the highest point 4 Move the first fixing screw of the...

Page 35: ...htly fasten the fixing screw for the lower shaft collar 8 6 2 Clearance adjustment between needle and hook 1 Unfasten the fixing screw of the hook base and control the position of the hook base by turning the adjusting collar of the hook base to the left and right set the clearance between the hook tip and needle at around 0 1mm 2 After control the position tighten the fixing screw of the hook bas...

Page 36: ...e presser foot lift block are closely contacted 8 8 Lubrication adjustment of hook 8 8 1 Checking the oil supply level of hook After 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 Adjus...

Page 37: ... the clamp screw and 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 adjus...

Page 38: ...ng with the fixed blade as in Figure F 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 that the moving bl...

Page 39: ...fixing screws Fig 8 20 8 11 4 Adjustment of Trimmer Cam and Lever The location of the trimmer cam is determined by the movement of the moving blade Upon trimming the trimming lever roller contacts the lowest curved line of the trimmer cam However during sewing the trimmer lever roller and the trimmer cam do not contact each other To make it sure adjustment can be conducted as follows 1 Loosen thre...

Page 40: ...revent hook damage caused by thread winding around the hook or the setting disruption 1 Slightly loosen two piston stopper screw nuts 2 When the two piston stopper screws are turned clockwise it increases torque and vice versa After torque adjustment tightly fasten the nut Fig 8 22 ...

Page 41: ...ion 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 correctl...

Page 42: ...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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SunStar KM-1070 SERIES, User Manual

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