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The description covered in this instruction manual is subject to change for improvement of the

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13 · 09 Printed in Japan

SEWING MACHINERY BUSINESS UNIT

2-11-1, TSURUMAKI, TAMA-SHI,

TOKYO, 206-8551, JAPAN

PHONE : (81)42-357-2371

FAX : (81)42-357-2274

http://www.juki.com

No.02

40092228

INSTRUCTION MANUAL

DSC-245,-4,-7

DSC-245V,-4,-7

NOTE :

Read safety instructions carefully and understand them before using.

Retain this Instruction Manual for future reference.

Summary of Contents for DSC-245

Page 1: ...No 02 40092228 INSTRUCTION MANUAL DSC 245 4 7 DSC 245V 4 7 NOTE Read safety instructions carefully and understand them before using Retain this Instruction Manual for future reference ...

Page 2: ...日本語 ...

Page 3: ...on is given where there is an immediate danger of death or serous injury if the person in charge or any third party mishandles the machine or does not avoid the dangerous situation when operating or maintaining the machine WARNING This indication is given where there is a potentiality for death or serious injury if the person in charge or any third party mishandles the machine or does not avoid th...

Page 4: ...s out The thread path needle point hook point or bobbin case positioning finger has scratches Remove the scratches on the hook point using a fine sand paper Buff the bobbin case positioning finger The needle thread tension is too high Properly adjust the needle thread tension The needle hits the hook point See 17 NEEDLE TO HOOK RELATIONSHIP Lubrication to hook is inadequate Properly adjust the lub...

Page 5: ...onnector section III Grounding 1 Be sure to have an electrical expert install an appropriate power plug in order to prevent accident caused by earth leakage or dielectric strength voltage fault In addition be sure to connect the power plug to the grounded outlet without exceptions 2 Be sure to ground the earth cable in order to prevent accident caused by earth leakage IV Motor 1 Be sure to use the...

Page 6: ...ore than rated voltage 10 in order to prevent accident caused by malfunction of the machine 3 Be sure to verify that the air driven device such as an air cylinder operates at the specified air pressure before using it in order to prevent accident caused by malfunction of the machine 4 To use the machine with safety be sure to use it under the environment which satisfies the following conditions Am...

Page 7: ...le accidents due to abrupt start of the machine be sure to turn OFF the power to the machine 8 Be careful of handling this product so as not to pour water or oil shock by dropping and the like since this product is a precision instrument 9 When tilting or returning the sewing machine to the home position hold the upper side of the machine head with both hands and perform the work quietly so that f...

Page 8: ...tape MAQ09509000 Feed 1 For attaching a broad tape 23 MAQ09202000 Bed top cover 1 MAQ09402000 Bed top cover 1 24 MAQ09204000 Binder setscrew 2 11 64 threads 40 25 MAQ09205000 Binder lock nut 2 11 64 threads 40 26 MAQ09206000 Tape guide 1 27 SS7110510SP Tape guide setscrew 1 11 64 threads 40 L 5 28 MAQ09203000 Bed top cover spring 1 29 MAQ09201000 Throat plate 1 MAQ09401000 Throat plate 1 30 SS2110...

Page 9: ...e technical documentation and 3 To be prepared with the above technical documentation compiled in accordance with part B of Annex VII and 4 Also to conform to the RoHS Directive 2011 65 EU 5 Relevant information on which should be transmitted in response to a reasoned request by the national authorities by the electronic method or other according to the request Applied harmonized standards in part...

Page 10: ...D TO ELLIPTICAL FEED 16 28 MOTOR PULLEY AND SEWING SPEED DSC 245 DSC 245V 18 29 TROUBLES AND CORRECTIVE MEASURES 19 13 24 ADJUSTING THE OPERATING STROKE OF THE PICKER DSC 245 4 7 DSC 245V 4 7 25 HOW TO REPLACE THE KNIVES DSC 245 4 7 DSC 245V 4 7 1 Turning the handwheel align the red marker dot in the machine arm with the white marker dot in the handwheel 2 Loosen setscrew in the picker driving pla...

Page 11: ...a plunger pump Motor to be used 400W Electro stop motor 4P AC servo motor 400W Electro stop motor 4P AC servo motor Oil to be used New Defrix Oil No 1 Noise Equivalent continuous emission sound pressure level LpA at the workstation A weighted value of 83 0 dB Includes KpA 2 5 dB according to ISO 10821 C 6 2 ISO 11204 GR2 at 2 200 sti min Sound power level LWA A weighted value of 89 5 dB Includes K...

Page 12: ...e setscrews 2 The knife pressure should be increased for a thick er thread However it is advisable to minimize by turning the adjust screw in direction B the knife pressure as long as the knife trims threads How to operate 1 The moment you press switch the sewing ma chine performs reverse feed stitching 2 The machine continues reverse feed stitching as long as the switch is held pressed 3 When you...

Page 13: ...n fix the bobbin winder using the wooden screws 5 Install cover of the belt cover 6 Tilt the machine head and check that the belt cover does not come in contact with the belt groove in the table Caution Tilt the machine head after removing the hook for the knee lifter Before starting the sewing machine Prior to operation be sure to properly lubricate the points marked with the arrow Caution About ...

Page 14: ... should be changed 3 For instance when sewing slippery material or sewing many overlapping sections a better result may be ob tained by adjusting the vertical stroke of the walking foot larger than that of the presser foot 1 Remove the walking foot cover front and turn the handwheel by hand until the thread take up reaches its lowest point 2 Lower hand lifter 3 Loosen screw 4 As you move top feed ...

Page 15: ...d route it under tension spring 2 Hold the latch of the bobbin case and set the bobbin case into the hook Caution When setting the bobbin in the bobbin case pay atten tion to the winding direction of the bobbin thread When the bobbin is correctly set in the bobbin the bobbin turns in the direction of arrow B by pulling the thread in the direction of arrow A Insert take up thread guide rod attachin...

Page 16: ...power before starting the work so as to prevent accidents caused by abrupt start of the sewing machine WARNING Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start of the sewing machine 10 ADJUSTING THE STITCH LENGTH 7 12 THREAD TENSION 13 THREAD TAKE UP SPRING 14 PRESSURES OF THE PRESSER FOOT AND WALKING FOOT Adjusting the needle thread tension Turning ten...

Page 17: ...Standard stroke of thread take up spring is 8 to 10 mm To adjust the stroke loosen setscrew and turn whole thread controller 2 The standard spring tension is 40 to 50 g 3 To adjust the tension turn the thread tension post us ing a screwdriver The pressure of walking foot height of adjustment screw A Standard 26 mm or the presser foot height of the adjustment screw B Standard 10 mm can be adjusted ...

Page 18: ... caused by abrupt start of the sewing machine 5 7 THREADING THE BOBBIN CASE 8 INSTALLING THE TAKE UP THREAD GUIDE ROD Removing the bobbin case Raise the bobbin case latch to remove the bobbin case Threading the bobbin case 1 Pass the thread through threading slit in the bob bin case and route it under tension spring 2 Hold the latch of the bobbin case and set the bobbin case into the hook Caution ...

Page 19: ...king foot sole is in contact with the throat plate surface 6 After adjustment securely tighten screw 7 Reinstall the walking foot cover front Height of the walking foot and the presser foot When sewing elastic material or overlapping sections a better result may be obtained by changing the height of the presser foot and walking foot 1 Loosen nut 2 When you move the cam rod boss toward A within the...

Page 20: ...n direction B Tension decreases and the needle thread lengthens 3 Decrease the tension when using a thin thread or if cloth slippage often occurs 4 Increase the tension when using a thick thread or if upper cloth tends to slip forward Positioning the needle bar Positioning the hook WARNING Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start of the sewing m...

Page 21: ...the switch the machine re sumes normal stitching Position of the switch 1 Set the switch in an easy to operate position 2 Loosen screws and move the switch up or down to adjust its position Position of the reverse feed solenoid 1 Set the stitch length dial at the maximum 2 Loosen two setscrews of the solenoid mounting base 3 Push feed lever down until it bottoms and move solenoid mounting base up ...

Page 22: ...lockstitch machine Cylinder bed 1 needle unison feed lockstitch machine with an automatic thread trimmer Cylinder bed 1 needle unison feed lockstitch machine horizontal drop feed Cylinder bed 1 needle unison feed lockstitch machine with an automatic thread trimmer horizontal drop feed Usage Suited for sewing medium weight materials Sewing speed Max 2 200 sti min Stitch length 0 to 6 mm Lift of pre...

Page 23: ...he operating stroke decreases and when it is small the operating stroke increases 1 Remove the throat plate and the feed dog 2 Rotary knife can be removed by removing con necting screw in driving plate and fixed knife can be done by removing setscrew of the fixed knife 3 After replacement adjust the knife pressure Method for adjusting the knife pressure see 19 ADJUSTUING THE PRESSURE OF THE FIXED ...

Page 24: ...9 B1640245000 Feed bar hinge stud cap 1 10 B1638245000 Spring support shaft 1 11 D1606245E00 Feed bar 1 12 B1613245000 Feed 1 D1613245E0A Feed 13 B1645245000 Feed bar block hinge stud 1 14 B1652245000 Feed bar setscrew 2 1 8 threads 44 L 3 7 15 RE0300000K0 E ring 1 16 B1644245000 Feed bar block B 1 17 D1643245000 Feed bar block A 1 18 B1603245000 Feed bar rocker arm 1 19 B163224500C Upper lower fe...

Page 25: ...broad tape 32 MAQ09207000 Walking foot 1 For attaching a narrow tape MAQ09307000 Walking foot 1 For attaching a broad tape List of parts to be replaced 2 Installation process 1 Install feed bar block on feed bar rocker arm 2 Install feed bar block hinge stud on feed bar 3 Temporarily install feed on feed bar 4 Install feed bar on which feed bar block hinge stud and feed have been mount ed 5 Instal...

Page 26: ...N Note that safety devices such as eye guard finger guard etc may be omitted from the illustrations in this Instruction Manual for easy explanation When operating the machine be sure not to remove these safety devices 1 For the safety never operate the sewing machine with the ground wire for the power supply removed 2 Be sure to turn OFF the power switch in prior when connecting disconnecting the ...

Page 27: ...terisk are the exclusive parts for the DSC 245V 4 or 7 2 The feed driving pin has engraved marker lines Use the pin which has many marker lines to raise the feed dog or use the pin with less marker lines to lower it Note No Part No Part Name Q ty Remarks 22 B15242450A0 Presser foot asm 1 23 B1470245000 Walking foot 1 24 SS2110915SP Screw in throat plate 2 11 64 40 thread ridges L 8 5 25 B110524500...

Page 28: ...tarburst connection in order to prevent electrical shock earth leakage or fire accident 3 Be sure to securely connect the connectors in order to prevent electrical shock earth leakage or fire accident In addition be sure to remove the connector while holding its connector section III Grounding 1 Be sure to have an electrical expert install an appropriate power plug in order to prevent accident cau...

Page 29: ...he sewing speed 2 000 sti min A coated cloth or nylon yarn is used Use a ball point needle 4 A few stitches are skipped The bobbin thread is too short Replace the bobbin by a standard one aluminum The bobbin thread breaks Decrease the bobbin thread tension and the thread trim ming speed A nylon thread is used when sewing lightweight material Use the soft start function 5 The thread slips off The t...

Page 30: ...on is given where there is an immediate danger of death or serous injury if the person in charge or any third party mishandles the machine or does not avoid the dangerous situation when operating or maintaining the machine WARNING This indication is given where there is a potentiality for death or serious injury if the person in charge or any third party mishandles the machine or does not avoid th...

Page 31: ...日本語日本語 ...

Page 32: ...truction manual is subject to change for improvement of the commodity without notice 13 09 Printed in Japan SEWING MACHINERY BUSINESS UNIT 2 11 1 TSURUMAKI TAMA SHI TOKYO 206 8551 JAPAN PHONE 81 42 357 2371 FAX 81 42 357 2274 http www juki com No 02 40092228 INSTRUCTION MANUAL DSC 245 4 7 DSC 245V 4 7 NOTE Read safety instructions carefully and understand them before using Retain this Instruction ...

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