UnionSpecial CS122 Engineer'S Manual Download

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From the library of: Superior Sewing Machine & Supply LLC

Summary of Contents for CS122

Page 1: ...t Quality 2 3 NEEDLE FLAT BED COVERSEAM MACHINE FS300 SERIES 2 3 NEEDLE CYLINDER BED COVERSEAM MACHINE CS100 SERIES ENGINEER S MANUAL EN9424 REV 03 19 99 From the library of Superior Sewing Machine Supply LLC ...

Page 2: ...on which are not covered by the Instruction Manual It is advisable to use the relevant Instruction Manual and Parts List together with this Engineer s Manual when carrying out the maintenance oi these machines This manual gives the Standard adjustment on the former page under which the most basic adjustment value and on the latter page the Results of improperadjustment under which errors and troub...

Page 3: ...SSER FOOT 24 14 POSinONOFTHETHREADGUIDE 24 2 CS100 28 1 NEEDLE FEED TIMING 28 2 ADJUSTING THE TIMINGOF THE NEEDLE BAR AND LOOPER SYNCHRONIZATION 28 2 SNYCHRONIZING LOOPER AND NEEDLE MOTIONS 30 3 RETURNING AMOUNT OF THE LOOPER 32 4 HBGHT OF THE NEEDLE BAR 34 5 POSmON OF THE NEEDLEGUARD 34 6 CLEARANCE BETWEEN THE LOOPER AND NEEDLE 36 7 ADJUSDNG AMOUNT OF THE LOOPER AVOID 36 8 POSmON OF THE FEED DOG ...

Page 4: ...sserfoot lift B Omm Lubricating oil UNION SPECIAL Designated oil Part No 28604R CS1 00 Series CS122 I CS122 I CS132 I CS132 Sewing speed With Puller 6000 R P M 6 500 S P M Max Undertrimmer 5500 R P M Stitch lenQth 1 6to3 2mm No of needle 2 3 2 3 Needle gauge 3 2 4 0 4 8 5 6 6 4 3 2 4 0 4 8 5 6 6 4 Top covering Without With Diff feed ratio Gathering stitch 1 1 5 Stretching stitch 1 0 6 Needle UY12t...

Page 5: ...ective diameter of the pulley of the machine head i 54mn CS100 Series 50 Hz 60Hz Motor pulley v belt inch Motor pulley V bell inch Sewing speed s p m Fully Semi Fully Semi outer dia mm submerged submerged outer dia mm subrre lJE f submerged type type type type 6 500 145 43 40 120 41 38 6 000 135 I 43 40 110 41 38 5 500 120 I 41 38 100 41 38 5 000 110 I 41 38 90 39 37 4 500 95 I 41 38 80 39 37 I 4 ...

Page 6: ... 6 mm TF Binding feed device CS Cylinder bed K Coverseam 60 6 0mm UT Thread trimmer FS Flat bed L lap seam 64 6 4 mm 1 9 Variety or devices U Universal 00 99 Variety ol sub class l I I I I FS332C01 3D56 TC4 I l Generation Feed type Stllch tongue 1 First 2 Dlflerential Represents the shape of the throat plate 2 Second 5 Differential puller stitc h tongue 3 Third A For short stitch length A c B For ...

Page 7: ...ing feed device CS Cylinder bed K Coverseam 60 6 0mm UT Thread trimmer FS Flat bed L Lap seam 64 6 4 mm 1 9 Variety of devices U Universal 00 99 Variety or sub class I I I I I I l I CS132H01 2C32 UT2 I Generation Feed type Stitch tongue 1 First 2 Differential Represents the shape of the throat plate 2 Second 5 Differential puller stitch tongue 3 Third A For short slilch length A 8 For medium stitc...

Page 8: ...e of knit fabric C 100 Series Code Soecification Description of Sub Class E11 For Elastic tape attaching Right hand fabric under trimmer Preclosed Elastic E12 For elastic tape attaching Fabric under trimmer and metering device Upper side H01 For Hemming Basic style with hem guide H11 For Hemming With cloth puller H21 For Hemming Lett hand fabric under trimmer K01 Covering With standard fixed seam ...

Page 9: ...e FS322 FS332 CS122 C 132 MD2 Metering device upper side Electric two stage F 322 F 332 CS122 CS13 MD3 Metering device lower side Electric single stage FS322 FS332 C 122 CS132 MD4 Metering device lower side Electric two stage FS322 FS332 C 122 C 132 Automatic tape feeding device Code I Description For use on model TF1 Automatic tape feeding device upper side For MD1 MD2 TF2 Automatic tape feeding ...

Page 10: ...ronization Without gauges When the blade point of the looper moves to the left in the rear of the needle and to th_e right in front of the needle align the upper end of the eyelet of the left needle with the lower face of the looper so that the distance between A and B the side of the left needle to the blade point of the looper should be equal 4J A B A B Vca ca J Mov e to the left Move to the rig...

Page 11: ... in operating direction until bottom of looper is even with tap of needle eye Note dimension A Continue turning handwheel in operating direction until bottom of looper is even w h top of needle sye when looper is in front of needle Note dimension 8 If A is greater than 8 loosen C on sprocket D Turn sprocket D in operating direction Tighten screws C Repeat above two steps until A 8 If A less than B...

Page 12: ...der contacts gauge plate Reposition needle bar as required to set pointer of indicator gauge at 0 Rotate handwheel in reverse direction until pin in looper holder again makes contact with gauge plate A variation of 1 graduation on scale is permissible 12 From the library of Superior Sewing Machine Supply LLC ...

Page 13: ...on scale is permissible To adjust o Loosen screws 0 on looper drive sprocket t o If reading is above a tum sprocket towards operator o If reading is below 0 tum sprocket away from operator o snug screws 0 o Continue to check adjust in both operating reverse directions until pointer 0 of indicator gauge 4D comes within 1 graduation on scale when turning handwheel in either direction o Tighten screw...

Page 14: ... 4 0 1 mm Right needle V Looper c I 4 4 0 1 mm 4 Height of the needle bar When the looper moves to the left and the blade point of the looper comes out from the left side of the left needle by 0 7 to 1 0 mm the lower face of the looper aligns with the upper end of the eyelet of the left needle c I J 0 7to 1 0 mm I Looper of Align Lett needle 14 From the library of Superior Sewing Machine Supply LL...

Page 15: ... 0 mill 0 0 0 0 Results of Improper Adjustment o If the returning amount is large skipping stitch and tangling stitch may occur and the range of the thickness of the cloth to be sewn is reduced o If the returning amount is small skipping stitch and tangling stitch may occur o If the distance of C is large skip stitching and tangling stitch may occur o If the distance of C is small skip stitching a...

Page 16: ... of looper t113 7 Position of the needle guard D Rear needle guard o The height of the rear needle guard is in the position that the rear needle guard is 1 2 mm above the top of the needle when the looper moves to the left as shown in the figure o The longitudinal position and inclination of the rear needle guard are in the position that when the right side of the respective needles comes to the b...

Page 17: ...r needle guard in any case Results of Improper Adjustment o If the clearance is too large the loop of the needle thread is not scooped and the back of the looper hits strongly the top point of the needle which causes the damage of the needle point o If the clearance is too small skipping stitch will occur due to the damage otthe tip of the looper the needle breakage and the large clearance between...

Page 18: ...oat plate o At the maximum travel the clearance of the main feed dog and differential feed dog is equal to A A 8 8 o The height of the teed dog is 1 0 mm at the top of their stroke o The tilt of the feed dog is parallel to the throat plate when the needle bar is at the highest position 1 0mm 18 From the library of Superior Sewing Machine Supply LLC ...

Page 19: ...etvright positions of the feed dog are incorrect the left right sides and the throat plate will wear out o Heating and abnormal noise will be produced o The feed components wiH wear out early And the looseness bending and abnormal noise will be produced o If the inclination of the feed dog is raised toward you starting of the workpiece will be affected o If the inclination of the feed dog is tower...

Page 20: ...1 mm o The height is 11 5 0 2 mm 4 0 3 2 gauge 10 8 0 2 mm for4 8 mm 5 6 mm and 6 4 mm gauges o When the spreader is in the extreme left position the distance between the center of the left needle and the top blade of the spreader is 5 5 0 1 mm o When the spreader returns to the right the clearance between the spreaderand the left needle is 0 3 to 0 5 mm o When the spreader is in he extreme right ...

Page 21: ...edle is likely to break as the resistance when the covering thread is pulled from the spreader becpmes large o If the movement amount of the spreader is not set right it will cause skip stitching of the top covering thread o If the height of the spreader is no set right it will cause skip stitching of the top covering thread o If the clearance between the spreader and needle is small it will cause...

Page 22: ...er cam to the upper part of the looper thread guide plate o The rear side ofthe looperthread cam pawl touches the wire and its front side is 9 6 mm above the upper face of the wire at the highest place of the inside o The looper thread cam pawl and wire are to be positioned in the center of the looper thread cam plate o The position of the thrE ad guide is to be set at the position that the looper...

Page 23: ...et i up and down Results of Improper Adjustment o If the timing of the looper thread cam is too advanced the skip stitching on the back of the looper will occur If it is too retarded the tightening of the thread will be inferior o If the clearance between the looper thread cam pawl and the wire is large the looper thread suddenly slackens and _skip stitching on the back side will occur o If the lo...

Page 24: ... foot on condition that the presser toot is set correct to the presser bar CV Adjust the height of the presser foot so that when the needle bar is in its highest point the needle point does not come out from the lower face of the presser toot Lower bushing Spreader Needles lf fMax 8 0 mm Throat plate Note On elastic machines height is 7 0 nm 14 Position ofthe thread guide D Middle thread guide and...

Page 25: ...toot descends and rests tightly on the throat plate l ll IIL i ll J li 0 5 mm o Loosen the screw and fix the thread guide attaching base i to the extreme right Loosen the screw and adjust the respective heights 2 referring to the left table Make the fine adjustment watching the actual stitching Results of Improper Adjustment o If the position of the presser toot is not correct it will cause defect...

Page 26: ...t point of needle bar _ _ _ Right needle thread release o If the needle thread is a spun thread lower the needle thread release so that the needle thread does not touch it Lowest point of needle bar Needle bar balance Needle thread release Spreader balance thread guide h should be positioned that the top covering thread does not slacken and the spreader does not pull out the thread when the spread...

Page 27: ...op of the needle thread becomes smalfei o If the loop is not formed the loop is too small and skip stitching occurs raise the needle thread release o If the loop is excessively formed the loop is too large and the skip stit fhing occ rs lower the needle thread release o lf it is raised the thread slackens o If it is lowered the thread tightens o Use of the nipper depenling on the threads to be use...

Page 28: ...Gauges 28 When the blade point of the looper moves to the left in the rear of the needle and to the right in the front of the needle and the top end of the hole of the left needle aligns with the lower part of the looper the distance between the left side of the left needle and the blade point of the looper should be equal to the distance A and B A B A Move to the left Move to the right Looper Lef...

Page 29: ...operating direction until bottom of looper is even wrth top of needle eye Note dimension A Continue turning handwheel in operating direction until bottom of looper is even with top of needle sye when looper is in front of needle Note dimension B If A is greater than B Loosen C in connector D Move connector D away from connector E Tighten C Repeat above two steps until A B If A less than B Loosen s...

Page 30: ...in that direction Synchronization is correct when looper moves 400 10 mm back and forth clockwise and counterclockwise and dial indicator on needle bar moves to zero in each direction Note Synchronization can only be obtained after needle feed timing has been set and only by moving looper drive lever rocker shaft until synchronization has been obtained Looper at extreme right 400 tend position l _...

Page 31: ...direction until allen wrench contacts throat plate Note Reading of indicator If distance is less than a Loosen screw 0 Fig 7 Move drive lever crank 4D away from looper rocker lever 8 Retighten screw 0 Recheck indicator readings in both rotating directions until they are the same 1 1 mark Torque screws 0 If distance is more than o Loosen screw G Fig 7 Move drive lever crank 4D towards looper rocker...

Page 32: ...he looper When the looper is at the extreme right position the distance between the blade point of the looper and the center of the right needle is 4 8 0 1 mm 32 Right needle V Looper I 4 8 0 1 mm From the library of Superior Sewing Machine Supply LLC ...

Page 33: ...der If the returning amount is large binder screw e skipping stitch and tangling stitch will occur And the thickness of the material to be sewn will be reduced It the returning amount is small skipping stitch and tangling stitch will occur 4 8 0 mm 16 e 33 From the library of Superior Sewing Machine Supply LLC ...

Page 34: ... of the contact surface of the rear needle guard when the blade point of the looper aligns with the right side of the right needle The pushing amount is 0 to 0 1 mm to all needles The blade point of the looper should not contact the respective grooves of the all needles Align I J o _ Contact surface of rear needle guard Pushing amount Oto0 1mm The height of the front needle guard is 2 0 0 1 mm fro...

Page 35: ...exagonal wrench for the screw Check that there is no looseness on the left right sides of the rear needle guard when tightening the screw 41 Results of Improper Adjustment If the measurement of C is large skip stitching and thread tangling occur If the measurement of C is small skip stitching and thread tangling occur o If the clearance between the rear needle guard and the needle is large it caus...

Page 36: ... left and right needles should be equal longitudinal moving 1 amount of looper Ref 1 54 mm Left needle Right needle Locus ofloope L o When the looper moves to the right the tip of the left needle contacts the back of the looper at the position of 213 from the upper side of the looper Left needle I Loope Needletipr Adjust when the needle is replaced with an excessively different sized needle Check ...

Page 37: ...occurs And the damage of the needle point will occur due to the strong hit on the back of the looper o If the clearance is small the damage of the blade point of the looper and the needle breS kage will occur And the skipping stitch will occur as the clearance between the back of the looper and the needle becomes large Left needle Right needle st Position of D C o Looper path between the engraved ...

Page 38: ...dB B o Height of the teed dog is 1 0 mm at the top of their stroke o Tilt of the feed dog is parallel to the throat plate when the needle bar is in its highest position o Adjust so that the throat plate and the main feed dog do not contact each other even if the main feed dog is in its maximum stroke end o Adjust so that the throat plate and the differential feed dog do not contact each other even...

Page 39: ...erential feed dog loosen screw til and enter the stopper pin to the end when the differential feed dog has reached its maximum stroke and while the differential feed dog does not contact the throat plate and the front end of the main feed dog Results of Improper Adjustment o If the lateral position of the feed dog is not correct the left right sides of the feed dog and the throat plate will wear o...

Page 40: ... 6 mm and 6 4 mm gauges a When the spreader is in the extreme lett position the distance between the center of the left needle and the top blade of the spreader is 5 5 0 1 mm o When the spreader returns to the right the clearance between the spreader and the left needle is 0 3 to 0 5 mm o When the spreader is in the extreme right position the lop blade of the spreader should be between left side a...

Page 41: ...too retarded the right needle is likelyto be broken as the resistance of the covering thread becomes strong when it passes the covering thread looper o If the movement amount of the spreader is not set right skipping stitch of the top covering thread occurs o If the height of the spreader is not set right skipping stitch of the top covering thread occurs o If the clearance between the spreader and...

Page 42: ...n 1hread 42 When the needle bar descends and the tip of the left needle aligns with the lower part of the looper the looper thread can be cast off from the highest point of the looper cam The looper thread cam thread guide is to be set in the center of the slot In case of wooly nylon thread at the upper end of the slot From the library of Superior Sewing Machine Supply LLC ...

Page 43: ... and down Caution Use a 3132 hexagonal wrench for the screws EEl and a Results of Improper Adjustment o If the timing of the looper thread cam is too advanced skip stitching on the back of the looper occurs If the timing of the looper is too retarded thread tightening is not well o If the looper thread cam is_ not set in the center the cam is scratched o If the clearance between the middle latch a...

Page 44: ...c and when the presser foot is raised at its highest point the thread tension disc opens and there is no tension on the thread 3mm Throat plate 14 Position and height of the presser foot 44 G Adjust the position of the presser foot so that the needles are positioned to enter the centers of the holes of the needle entry of the presser foot on condition that the presser foot is set right to the pres...

Page 45: ...he screw so that the clearance between the top end of the screw and the lever becomes 0 5 mm on condition that the presser foot descends and seats tightly on the throat plate Results of Improper Adjustment o If the clearance between the presser bar bracket and the presser bar bushing is too small the bottom face of the presser foot is not closely fitted on the throa1 plate If the clearance is too ...

Page 46: ...nt of the slot o When the loop of the ne_edle thread is not easily formed raise the needle thread release as shown in the left figure at the time of the lowest point of the needle bar o If the needle thread is a cotton thread raise the right needle thrE ad release so that the right needle thread only touches at the time of the lowest point of the needle bar o It the needle thread is a spun thread ...

Page 47: ...dle can be simply slackened if the thread guide attaching base is moved to the left o If it is raised the loop of the needle thread becomes large o Ifit is towered the loop of the needle thread becomes smalL o If the loop is not formed the loop is too small and the skip stitching occurs raise the needle thread release o If the loop is excessively formed the loop is too large and the skip stitching...

Page 48: ...ed by flaw burr rust etc In stitch longue In throat plate looper looper thread cam thread guide thread tension disc Excessive tension applied due to the Incorrect position of looper thread cam liming thread guide Too strong tension olloopar thread Corrective measures Refer to threading diagram Remove the flaw burr etc and polish the thread guide finish However replace such important parts as loope...

Page 49: ...edle entry is not correctly f positioned lor the plate or fool Too hnle clearance belween spreader and Refer to standard adjustment needle Needle hils looper resulting In needle Make adjustment so that looper does not hit the looper For breakage the correction of the contact at looper s back adjust the moving amount front and rear Too strong contact against needle guard r 1 Refer to standard adjus...

Page 50: ...s before thread Same described in page Thread breakage by Ibreakage produced bv needle heat needle hear 1 looper adjustment Incorrect clearance adjustment Iincorrect returning amount adjustment Reier to standard adjustment I t Needle guard front end rear IIncorrect contact amount lncor rect r height Reier to standard adjustment I looper does not scoop the looper IIncorrect shape of pointed end ol ...

Page 51: ...rrect needle Replace the needle wlth new one Correcl the Imounling dlrecllon wrong needle J mounting direction Use UY121GJS CS100 UY12B GBS FSJOO H Nipper Being used Do not use nipper I k H Intermediate thread guide Height Is too low Correcl height position lo appropriate height I k k H Needle height Heigh Is loo low Refor to slandard adjustmonl I LoH Right LoH Right H ThreadlniJ Incorrect threadi...

Page 52: ...ad tension 1 Looper thread cam liming Cause 2 Correcllve measures shape is incorrect Replace II with the genuine part I Needle bent Replace the needle with the new one I Needle bar position is too high Refer to standard adjustment I Incorrect threading Reier to threaa ing diagram I Incorrect claarancil adjustment ltncorrect returning amount Rater to standard adjustment I Tension is too weak Increa...

Page 53: ...w 4 Incorrect threading Refer to standard adjustment Reier to standard adjustment 1 Refer to threading diagram H Needle holder I I thread guide spreader Incorrect height position front and I rear Refer to standard adjustment H Spreader thread tension Spreader thread tension Is too weak Spreader take up thread drawing in amount Incorrect drawing in amount of thread Skipping In top covering stitch b...

Page 54: ...rect threading Refer to threading diagram I Spreader thread tension Spreader thread tension Is too weak I Increase tension I l Spreader pull oH Incorrect drawing in amount of thread r 1 Refer to standard adjustment I Stationary spreader thread I lnconect height and position Refer to sll mderd adjustment I guide Skipping In top covering alllch by middle needle Middle needle doea not scoop top cover...

Page 55: ...justment I Stationary spreader thread I Incorrect height and posl1ion guide Refer to standard adjustment I j Needle height Needle bar posilion is too low Refer to standard adjustment I j Threading lnCOHBCI threading Reier to threading diaglam j Spreader thread tension Spreader tension is too weak Increase tension Spreader pul olf drawing in amount ol thread IIncorrect drawing in amount ol thread 1...

Page 56: ...arge and ridgellna is nolstJaght lor which needle thread is likely to slip rom looper t i looper adfustmenl Too lUIIe conlact amount between lrooper s back and needle Refer to standard adjustment I W Thread tension Thread tension Is too weak Increase tension I 11_Adjustat e thread g1 1ide I Ilow position of thr8illd guard results I Lift thread guide position J position In too large needle thread l...

Page 57: ...101 stitch by right needle 101 stitch by middle needle l 101 stitch by left needle f Right needle thread miss ___ r Middle needle thread miss n 57 From the library of Superior Sewing Machine Supply LLC ...

Page 58: ...d guide I 1 position 1 Nipper l JC R Length ol stitch tongue Worn out needle point needle bent I wrong needle Replace needle with naw one Use UY121GJS 1 CS100 UY12BGBS FSJOO I I Fiaw in looper s body section r 1 Replaca tho looper when modified or its shape Is I incorrect polishing I d too m I Needle bar position Is too low Reier to standard adjustment I tnoorrectthreading Reier to threading diagr...

Page 59: ...ch Incorrect polishing Too long stllch longue Worn out needle point needl bent wrong needle H Looper t 1 Worn out looper s polnled end _ I Incorrect polishing H Needle helghl 1 Threading H Needle thread tension j Adjustalje thread guide I I position j looper thread tension looper thread cam thread I guide position Needle bar position Is too low lncorrecl threading Tension Is too weak Thread guide ...

Page 60: ...ing f 1 Incorrect lhreading 1 1 Refer to threading diagram r Top covering thread tension f t 1 looper thread cam thread J I I guide position y Stitch tongue or presser fool Throat plata 1 Threading j Needle thread tension j looper thread tension looper thread cam thread I guide position 1st thread tension is too weak Drawing in amount of looper thread Is I too much Thread threading is not smooth d...

Page 61: ... when its shape is modified or changed too l to Incorrect shape of stitch tongue J Imuch Needle Worn out needle point needle bent wrong needle I Replace needle with new one Use UYI2tGJS I ICS100 UY128GBS FS300 Feed dog Flaw on surface In feed dog Modify or replace I 1 Stitch skip stitch missing at rl Double cutting Remaining thread Is too shorl by_ Refer to standard adjustment start of sewing alte...

Page 62: ... Refer to standard adjustment knife and looper movable knife against looper s backposition Engaging pressure Movable Engaging pressure is too weak Refer to standard adjustment and stationary knife Intermediate thread guide l position Thread guide position is too tow lilt the position H Stationary knife Worn out edge nicked edge disables I Sharpen or replace edge sharp cutt ng f 1 Initial position ...

Page 63: ...NOTES From the library of Superior Sewing Machine Supply LLC ...

Page 64: ...pecial GmbH Raiffeisenstrasse 3 D 71696 M6glingen Ger many Tel 49 07141 247 0 Fax 49 07141 247 100 Union Special unterh61t Verkaufs und Kundendienst Niederlassungen in der gonzen Welt Diese helfen Ihnen in derAuswohl der richtegen Moschine fUr lhren speziellen Bedorf Union Special Vertreter und Kundeniensttechniker sind in unseren Werken ousgebildetworden um Sie schnell und fochmOnnisch zu bediene...

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UnionSpecial CS122, Engineer'S Manual

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