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Foreword

This instruction manual is intended to help the user to become

familiar with the machine and take advantage of its application

possibilities in accordance with the recommendations.

The instruction manual contains important information on how to

operate the machine securely, properly and economically.

Observation of the instructions eliminates danger, reduces costs

for repair and down-times, and increases the reliability and life of

the machine.

The instruction manual is intended to complement existing

national accident prevention and environment protection

regulations.

The instruction manual must always be available at the

machine/sewing unit.

The instruction manual must be read and applied by any person

that is authorized to work on the machine/sewing unit. This

means:

Operation, including equipping, troubleshooting during the

work cycle, removing of fabric waste, 

Service (maintenance, inspection, repair and/or

Transport.

The user also has to assure that only authorized personnel work

on the machine.

The user is obliged to check the machine at least once per shift

for apparent damages and to immediatly report any changes

(including the performance in service), which impair the safety.

The user company must ensure that the machine is only operated

in perfect working order.

Never remove or disable any safety devices.

If safety devices need to be removed for equipping, repairing or

maintaining, the safety devices must be

remounted directly after completion of the maintenance and

repair work.

Unauthorized modification of the machine rules out liability of the

manufacturer for damage resulting from this.

Observe all safety and danger recommendations on the

machine/unit! The yellow-and-black striped surfaces designate

permanend danger areas, eg danger of squashing, cutting,

shearing or collision.

Besides the recommendations in this instruction manual also

observe the general safety and accident prevention regulations!

Summary of Contents for 275

Page 1: ...ion manual Postfach 17 03 51 D 33703 Bielefeld Potsdamer Straße 190 D 33719 Bielefeld Telefon 49 0 521 9 25 00 Telefax 49 0 521 9 25 24 35 www duerkopp adler com GB D Ausgabe Edition Änderungsindex Teile Nr Part No 02 2002 Rev index 00 0 Printed in Germany 0791 275740 ...

Page 2: ...eser Inhalte ist ohne vorheriges schriftliches Einverständnis der Dürkopp Adler AG verboten All rights reserved Property of Dürkopp Adler AG and copyrighted Reproduction or publication of the content in any manner even in extracts without prior written permission of Dürkopp Adler AG is prohibited Copyright Dürkopp Adler AG 2002 ...

Page 3: ... fabric waste Service maintenance inspection repair and or Transport The user also has to assure that only authorized personnel work on the machine The user is obliged to check the machine at least once per shift for apparent damages and to immediatly report any changes including the performance in service which impair the safety The user company must ensure that the machine is only operated in pe...

Page 4: ...ion and special maintenance work must only be carried out by technicians or persons with appropriate training 7 For service or repair work on pneumatic systems disconnect the machine from the compressed air supply system max 7 10 bar Before disconnecting reduce the pressure of the maintenance unit Exceptions to this are only adjustments and functions checks made by appropriately trained technician...

Page 5: ...ure 17 6 11 Setting the stitch length 18 6 12 Raising the sewing foot 19 6 13 Locking the sewing foot in the up position 19 6 14 Setting the value of the overfeed fullness 20 6 15 Limit on overfeed length 20 6 16 Edge cutter Cl 275 740642 21 6 16 1 Automatically switching on the edge cutter with the first stitch 21 6 16 2 Switching on the edge cutter with an automatic delay 22 6 16 3 Switching on ...

Page 6: ...ing between smooth sewing and fullness 27 6 18 4 4 Sewing with 8 programmed fullness sequences 27 6 18 4 5 Alternately sewing right and left hand pieces with a programmed fullness 28 6 18 5 Sequence advance by severing the thread 28 6 18 6 Switching the edge cutter on and off only Cl 275 742642 28 6 18 7 Displaying the current program switching programs 28 6 19 Keypad on the machine arm 29 7 Sewin...

Page 7: ...riate safety measures to be taken Generally only dry material may be sewn with this machine The material may be no thicker than 6 mm when compressed by the lowered sewing feet The material may not contain any hard objects since if it does the machine may not be operated without an eye protection device No such device is currently available The seam is generally produced with textile fibre sewing t...

Page 8: ... via a step motor plus smooth sewing that can be selected with keys or the knee switch Fitted as standard with keys for bar tacking within the seam for needle up down for activating and suppressing bar tacks and fullness on off Cl 275 740642 Like the basic type but with automatic electromagnetic bar tacking and automatic foot elevation an electropneumatically connectable edge cutter driven by an e...

Page 9: ...l with 6 mm seam width containing N005 005302 edger and N005 005301 attachment with Z100 001041 pneumatic switch unit X X X 0271 002121 K conversion kit 170 hook X X X X X 0271 590014 Oil free hook conversion kit X X X X X 0271 000661 Knee lever add on kit X X X X 0271 590024 Infrared reflex light barrier X X X X X 0271 590034 Photoelectric residual thread monitor for the looper thread X X X X X 9...

Page 10: ...08 WE8 maintenance unit X X X X X 0797 003031 Pneumatic system connection pack X X X X X MG53 400015 MG53 3 1060x500 X X X X X MG53 400016 MG53 3 1060x600 X X X X X MG53 400017 MG53 3 1250x900 700 X X X X X MG53 400018 MG53 3 1060x600 table plate opening rotated by 10 X 8 275 140332 275 142042 275 140342 275 740642 275 742642 ...

Page 11: ...tory set speed min 1 4800 Sewing foot stroke when lifted mm 7 Operating pressure bar n a n a 6 n a 6 Air consumption NL n a n a 0 02 n a 0 02 Length width height mm 500 x 175 x 380 Weight kg 36 36 37 38 39 Design voltage range V Hz 1 x 190 240 V 50 60 Hz Factory set design voltage V Hz 1 x 230 V 50 60 Hz Design power kVA 0 5 Noise workplace related emission value conforms to DIN 45635 48 A 1 KL2 L...

Page 12: ...a Correct thread interlacing in the centre of the material Fig b Needle thread tension too low or hook thread tension too high Fig c Needle thread tension too high or hook thread tension too low 10 1 2 3 4 ...

Page 13: ...the length of the end of the cut needle thread and hence the thread length needed for the next secure seam start Basic setting Turn knurled nut 2 until its front is flush with the bolt 3 To shorten the starting thread Turn knurled nut 2 clockwise To lengthen the starting thread Turn knurled nut 2 anti clockwise Important After major changes to the needle thread pre tensioner it may be necessary to...

Page 14: ...winder shaft 1 Thread the bobbin thread as shown in the illustration Wind the bobbin thread clockwise onto the bobbin core Pull the thread end through the cutter clamp 2 and cut Swivel the bobbin winder flap 3 against the bobbin Turn on the main switch Commence sewing The bobbin winder automatically switches off when the pre set quantity of thread has been wound on see Servicing instructions 12 1 ...

Page 15: ... bobbin Remove the empty bobbin from the bobbin housing top 2 Fitting the full bobbin Place the full bobbin 3 in the bobbin housing top 2 Pull the hook thread through slit 4 under tension spring 6 and into hole 5 Pull about 5 cm of hook thread out of bobbin housing top 2 When the thread is pulled out the bobbin must rotate in the direction of the arrow Replace the bobbin housing top 2 in the shutt...

Page 16: ...s the bobbin from running on when the thread is cut The two tension values are adjusted as follows Unscrew the regulating screw 3 until the leaf spring 4 is no longer under tension Set the braking spring 1 by screwing in the regulating screw 2 until half the recommended shuttle tension value is exerted by the braking spring Place the bobbin in the bobbin housing top and thread the looper thread se...

Page 17: ... throat 2 must point in the direction of the shuttle tip 3 see sketch Tighten screw 1 CAUTION After changing to a needle of a different thickness the distance between the shuttle and the needle must be adjusted see Service instructions Failure to carry out this adjustment may lead to the following errors Changing to a thinner needle faulty stitches damage to thread Changing to a thicker needle dam...

Page 18: ...rn off the main switch The thread regulator may only be adjusted with the machine turned off Loosen screw 5 Adjust thread regulator 2 The vertical wire 3 acts as an adjustment aid in combination with scale 4 standard value 2 5 Tighten screw 5 Note on adjustment When the thread regulator 2 is correctly adjusted the following must apply When thread loop 6 passes the thickest part of the shuttle the ...

Page 19: ...e overfeed foot must only be checked with the overfeed foot in contact with the feeder 6 10 Setting the overfeed foot contact pressure The required pressure for the overfeed foot grip feed is set with adjustment wheel 1 To increase the overfeed foot pressure Turn adjustment wheel 1 clockwise To reduce the overfeed foot pressure Turn adjustment wheel 1 anti clockwise CAUTION The sewing foot pressur...

Page 20: ...6 11 Setting the stitch length Adjustment wheels The stitch length is set with adjustment wheel 1 for sewing forwards with adjustment wheel 2 for sewing backwards 18 1 2 ...

Page 21: ... as long as the pedal is held in position At the seam end push the pedal fully back to activate the thread cutter and raise the sewing foot 6 13 Locking the sewing foot in the up position Once the sewing foot has been raised mechanically or electromagnetically pressing button 1 locks it in the up position e g to spool the looper thread With the machine at a standstill push the pedal half way back ...

Page 22: ...nter 2 The function for the electropneumatically connectable fullness facility optional extra is incorporated in the sewing drive control 6 15 Limit on overfeed length 275 140332 275 140342 275 740642 When using some equipment the maximum possible overfeed length applies see parts list sewing equipment The overfeed length limiter 5 is supplied together with the relevant equipment The limiter is fi...

Page 23: ... of the edge cutter is switched on with the three position switch 3 Position 0 edge cutter off LED 2 is off Position I low cutting speed for small to medium stitch lengths Position II high cutting speed for medium to large stitch lengths When the switch 3 is in positions I and II LED 2 flashes The green LED 4 lights up when the machine is switched on When the seam is commenced the edge cutter auto...

Page 24: ...iately the stitch count is terminated and LED X is permanently on All other functions are as described in section 6 16 1 6 16 3 Switching on the edge cutter manually If the edge cutter is always to be switched on manually never automatically the number of stitches in parameter 258 must be set to 0 The edge cutter can then be switched on and off with the Y key at any time even with the machine at a...

Page 25: ...edge cutter is switched on with the three position switch 3 Position 0 edge cutter off LED X is off Position I low cutting speed for small to medium stitch lengths Position II high cutting speed for medium to large stitch lengths When the switch 3 is in positions I and II LED X flashes Release of the edge cutter by the fullness control The edge cutter must always also be released by the fullness c...

Page 26: ... of stitches has been sewn since the start of the seam Pressing the Y key during the stitch count switches the edge cutter on immediately the stitch count is terminated All other functions are as described in section 6 17 1 6 17 3 Switching on the edge cutter manually If the edge cutter is always to be switched on manually never automatically the number of stitches in parameter 258 must be set to ...

Page 27: ...ut 6 18 2 Operating terminal description of the operating components Smooth sewing key When this key is operated the green LED above the key lights up and the material is smooth sewn i e with no gathering The length of the overfeed must be set with the keys so that the material is sewn with no gathering Keys 1 to 8 sequence With the keys 1 to 8 the required sequence within a program can be directl...

Page 28: ...ing functions to any sequence and to smooth sewing The green LED above the F key lights up to indicate that it has been activated 7 Display segment The display normally shows the length of the overfeed The values may lie between 1 0 and 8 0 Error messages are issued in the event of an error and special functions displayed when the basic setting has been changed see Set up instructions 6 18 3 Switc...

Page 29: ... the knee switch is operated or when the thread is cut see also section 6 18 5 Pressing the smooth sewing key switches this work mode off again 6 18 4 4 Sewing with 8 programmed fullness sequences When the machine is switched on the last fullness program to be used is briefly displayed and activated The green LED above the current fullness sequence lights up If this does not happen the required se...

Page 30: ...g the edge cutter on and off only Cl 275 742642 In each seam sequence in a programmed seam cycle the edge cutter can be automatically switched on and off by pressing the F key in the relevant seam sequence the LED above the key lights up Pressing the key again switches the edge cutter off see section 6 17 6 18 7 Displaying the current program switching programs When the machine is switched on the ...

Page 31: ... is determined with the F 140 parameter DA 220C 1 needle up 2 needle up down 3 single stitch The factory setting is 1 needle up Manually sewing backwards The machine sews backwards for as long as the key is held down Switching the edge cutter on and off Switching fullness on and off yellow LED display if the LED lights up the selected function is activated green LED display sewing drive switched o...

Page 32: ...uence Sewing operation operation explanation Before starting sewing Initial position Position the material at the seam start Pedal in neutral position Machine at a halt Needle up sewing feet down Push pedal back The sewing feet rise Position material Release pedal The sewing feet descend onto the material At the seam start Starting the seam Starting the seam without a starting bar tack Push pedal ...

Page 33: ...ness See section 6 18 4 Push pedal forwards The machine sews at the speed set by the pedal The starting bar tack is not sewn Press key 2 and hold the pedal down The machine sews backwards for as long as key 2 is held down The speed is determined by the pedal At the seam end Ending the seam Ending the seam with no ending bar tack Push pedal fully back and hold it there The ending bar tack is sewn T...

Page 34: ...ay need to be shorter when processing heavy shedding materials 8 1 Cleaning and testing A clean machine is a trouble free machine Maintenance work Explanation Operating to be carried out hours Upper part of the machine Remove lint pieces of thread and other debris Places in special need of cleaning underside of needle plate feeders area around shuttle bobbin housing thread cutter needle area 8 cle...

Page 35: ...g oil or an equivalent oil of the following specification Viscosity at 40 C 10 mm2 s Flashpoint 150 C DA 10 is available from DÜRKOPP ADLER AG retail outlets under the following part numbers 2 litre container 9047 000013 5 litre container 9047 000014 Lubricating the upper part of the machine Check the reservoir 1 weekly The oil level must not fall below the MIN mark If necessary top up with oil to...

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