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Threading the loopers and
needles

General information on threading

Threading takes place in the following order:

1. STEP 1 upper looper

red

2. STEP 2 lower looper

yellow

3. STEP 3 right needle

green

4. STEP 4 left needle

blue

Correct threading is essential to ensure that
stitching is even and to prevent the thread from
tearing.

There is a practical guide to threading behind the
front ﬂ ap (12).

In addition, the thread guides are marked in
different colours.

There is a pair of tweezers in the accessory box (16)
to help with threading.

If it is necessary to retrospectively
thread one of the looper threads again
(e.g. when the thread tears), ﬁ rst
remove the thread from the needle
to prevent the thread becoming
entangled.

Threading the loopers and needles

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Содержание MD 19077

Страница 1: ...User Manual OVERLOCKER ...

Страница 2: ... yarn and needles 39 Changing the thread 40 Handle 40 Setting the stitch length 41 Setting the cutting width 41 Disengaging the upper knife 44 Converting to two thread operation 45 Tight and loose chaining with three threads 47 Stitch ﬁnger control 49 Differential feed 51 Setting the presser foot pressure 54 Replacing needles 55 Replacing the knife 56 Troubleshooting 58 Storage 59 Cleaning and lub...

Страница 3: ...3 Overview A 6 2 3 1 7 17 18 19 20 16 21 5 4 13 14 9 10 12 11 8 22 15 ...

Страница 4: ...4 B 23 25 24 26 28 27 Overview ...

Страница 5: ...5 C 32 29 30 31 37 35 33 34 36 Overview ...

Страница 6: ...ch 8 Thread guide for the right needle thread 27 Handwheel 9 Thread guide for both needle threads 28 Differential feed control 10 Thread guide for needle threads 29 Upper knife 11 Holder for the two thread converter behind the front ﬂap 30 Knife ﬁtting 12 Front ﬂap 31 Front thread guide 13 Presser foot 32 Upper looper 14 Needles 33 Thread guides for looper threads 15 Catch for opening the free arm...

Страница 7: ...re 15 Cleaning and storage 15 Package contents 16 Before use 17 Accessories 17 Setting the telescopic thread guide 18 Spool holder 18 Spool caps 18 Spool net 19 Connecting the foot control 20 Controlling the sewing speed 20 Safety switch 21 Operation 21 Handwheel 21 Raising and lowering the presser foot 21 Front ﬂap 22 Thread cutter 23 Work table and accessory compartment 23 Threading the loopers ...

Страница 8: ... cutting width 41 The ideal cutting width 42 The cutting width is too narrow 43 The cutting width is too wide 43 Disengaging the upper knife 44 Converting to two thread operation 45 Tight and loose chaining with three threads 47 Stitch ﬁnger control 49 Differential feed 51 Functionality 51 Positive differential feed 52 Negative differential feed 52 Setting the differential feed 53 Setting the pres...

Страница 9: ...Disposal 61 Technical speciﬁcations 62 Service information 63 Legal notice 64 Privacy statement 65 Contents 9 ...

Страница 10: ...warning symbols listed below the hazard described in that text must be avoided to prevent the potential consequences described there from occurring DANGER This keyword denotes a high risk hazard situation which will result in death or serious injury if it is not avoided WARNING This keyword denotes a medium risk hazard situation which can result in death or a serious injury if it is not avoided CA...

Страница 11: ...r use Proper use Your appliance can be used in a range of ways The overlock sewing machine can be used to sew together and neatening the seams on light to medium weight material The material can be made of textile ﬁbres composite materials or lightweight leather The appliance is only intended for private use and not for industrial commercial use Please note that we shall not be liable in cases of ...

Страница 12: ...dion AG hereby declares that the product conforms to the following European requirements EMC Directive 2014 30 EU Low Voltage Directive 2014 35 EU Ecodesign Directive 2009 125 EC RoHS Directive 2011 65 EU About this user manual 12 ...

Страница 13: ... and properly supervised Do not allow children younger than 8 years old near the appliance and its power cable DANGER Risk of choking and suffocation Packaging ﬁlm can be swallowed or used improperly creating a risk of choking and suffocation Keep packaging material such as plastic ﬁlm or plastic bags away from children Mains cable and power supply Only connect the appliance to an easily accessibl...

Страница 14: ...y not be used This is to avoid hazards WARNING Risk of electric shock There is a risk of electric shock if repairs are not carried out by qualiﬁed personnel Never attempt to open or repair the appliance yourself In the event of a fault or damage to the power cable contact our Service Centre or another suitable professional repair workshop to prevent hazards General information The sewing machine m...

Страница 15: ...perating the moving parts of the machine particularly the needle and knife There is also risk of injury when the machine is not connected to the power supply Do not use bent or blunt needles When sewing do not hold the fabric tight and do not pull on the fabric This could cause the needle to break Always place the needle in the highest position at the end of sewing work When leaving the machine an...

Страница 16: ...rchase Overlock sewing machine Foot control type HKT72C User manual Accessories overview of contents on next page DANGER Risk of choking and suffocation Packaging ﬁlm can be swallowed or used improperly creating a risk of choking and suffocation Keep packaging material such as plastic ﬁlm or plastic bags away from children Package contents 16 ...

Страница 17: ... compartment on page 23 38 39 40 41 42 43 44 45 46 47 38 Needle set 43 Tweezers 39 Replacement for upper knife 44 Oil can without contents 40 Replacement for lower knife 45 Spool caps 4x 41 Screwdrivers small medium and large 46 Two thread converter 42 Lint brush 47 Spool net 4x Accessories not shown Thread spool 4x pre mounted Cover Before use 17 ...

Страница 18: ...al and domestic spools can be used with this machine When using industrial spools with a large diameter place the spool holder with the wide end upwards When using spools with smaller diameters place the spool holder on the spool pin with the narrow end upwards Spool caps When using non industrial spools remove the spool holder Place the domestic spool onto the spool pin and place the supplied spo...

Страница 19: ... to ensure the thread feeds uniformly When the yarn has not yet been threaded pull the net from above over the spool Pull the net over the spool up to the end and turn up the excess part If the yarn has already been threaded the thread spool can be removed from the yarn needle and the net pulled up over the spool from below Before use 19 ...

Страница 20: ... the sewing light Use only the supplied foot control After ﬁnishing work or before maintenance work always switch off the machine and pull the mains plug from the socket Foot pedal Power switch Plug housing Coupling plug Controlling the sewing speed The sewing speed is controlled using the foot control This means that the sewing speed can be changed by exerting more or less pressure on the foot co...

Страница 21: ...nt ﬂap before beginning to sew Operation Handwheel Always turn the handwheel 27 towards you Raising and lowering the presser foot Raising or lowering the presser foot lever 20 moves the presser foot 13 up or down accordingly In order to sew thick fabric the presser foot 13 can be raised a little to allow extra clearance Operation 21 ...

Страница 22: ...12 push the notch as far as possible to the right and then pull the front ﬂap towards you 1 2 To close the front ﬂap fold it upwards and hold in place until it slides into its closed position due to a pre tensioned spring Operation 22 ...

Страница 23: ... cm of thread hanging out the back of the needle eye Work table and accessory compartment It is advisable to use the free arm to make sewing sleeves or trouser leg holes easier Lightly press the catch 15 underneath the work table Pull the work table 16 to the left of the machine to allow you to use the free arm Operation 23 ...

Страница 24: ...hing is even and to prevent the thread from tearing There is a practical guide to threading behind the front ﬂap 12 In addition the thread guides are marked in different colours There is a pair of tweezers in the accessory box 16 to help with threading If it is necessary to retrospectively thread one of the looper threads again e g when the thread tears ﬁrst remove the thread from the needle to pr...

Страница 25: ...4 5 Place the thread between the two discs on the thread tensioner 6 The thread must be correctly positioned between the two discs on the thread tensioner 6 Place the thread in the front thread guide 31 7 From this point follow the thread guide diagram in the machine 8 To thread the yarn into the looper eye turn the handwheel 27 towards yourself until the looper is in a favourable position 9 Threa...

Страница 26: ...andle and press it down behind the machine until the thread sits in the rear thread guide 6 Place the thread between the two discs on the thread tensioner 7 The thread must be correctly positioned between the two discs on the thread tensioner 7 Place the thread in the front thread guide 8 From this point follow the thread guide diagram in the machine 9 To thread the yarn through the rear eye A of ...

Страница 27: ...he eye on the telescopic thread guide 3 Take care to ensure that the yarn is thread from back to front 3 Lift the handle and guide the thread under the handle 4 Hold the thread ﬁrmly in front of the handle and press it down on the back of the machine until the thread is located in the rear thread guide 24 5 Place the thread between the two discs on the thread tensioner 5 The thread must be correct...

Страница 28: ...ace the thread to the back Threading the left needle 1 Turn the handwheel towards you until the needles are at the highest position 2 Guide the thread through the eye on the telescopic thread guide Take care to ensure that the yarn is thread from back to front 3 Lift the handle and guide the thread under the handle 4 Hold the thread ﬁrmly in front of the handle and press it down behind the machine...

Страница 29: ...e bar and then thread it through the needle eye of the left needle from front to back 9 Pull the end of the thread approx 10 cm through the looper eyes and place the thread to the back 10 Raise the presser foot 13 and push all threads underneath then lower the presser foot again by pressing down the lever 20 on the back of the appliance 11 After threading close the front ﬂap Threading the loopers ...

Страница 30: ...d check whether the threads pull 3 Then carefully sew a few stitches without feeding the fabric to check for tangled threads 4 Place the fabric for the test run under the presser foot 13 lower the presser foot and begin to sew slowly The fabric is fed through automatically only move the fabric further carefully Cutting threads 1 When work is ﬁnished continue sewing to form an approx 5 6 cm long th...

Страница 31: ...he thread tension accordingly Thread tension 2 Turn the thread tension selector 4 7 to a lower number upward there is less tension 3 Turn the thread tension selector to a higher number downward there is more tension Correct thread tension Rear side Lower hook thread Upper hook thread Left needle thread 6 mm Right needle thread Front side Adjusting the thread tension 31 ...

Страница 32: ...side Front side Adjusting the thread tension for looper threads Rear side Front side Rear side Front side Lower looper thread is too tight and or upper looper thread is too loose Reduce lower looper thread tension and or increase upper looper thread tension Upper looper thread is too tight and or lower looper thread is too loose Reduce upper looper thread tension and or increase lower looper threa...

Страница 33: ... thread tension This table details ideal sample settings that are not the same for all materials and yarns Always test the settings on a sample ﬁ rst Programme Needle position Thread tension Stitch length Cutting width Stitch ﬁ nger position 2 thread converter Blue Green Red Yel low 4 thread overlock stitch N 2 2 1 3 3 5 S No 3 thread overlock stitch wide N 2 1 3 3 5 S No This column contains a di...

Страница 34: ... Cutting width Stitch ﬁ nger position 2 thread converter Blue Green Red Yel low 3 thread overlock stitch narrow N 2 1 3 3 5 S No 3 thread overedge seam wide N 5 3 5 3 3 5 S No 3 thread overedge stitch narrow N 5 4 3 3 5 S No Overview of machine settings 34 ...

Страница 35: ...h Cutting width Stitch ﬁ nger position 2 thread converter Blue Green Red Yel low 3 thread ﬂ atlock stitch wide 4 5 N 2 3 3 5 S No 3 thread ﬂ atlock stitch narrow 4 5 N 2 3 3 5 S No 3 thread rolled hem stitch 1 2 1 F R R No Overview of machine settings 35 ...

Страница 36: ... Cutting width Stitch ﬁ nger position 2 thread converter Blue Green Red Yel low 3 thread rolled hem stitch folded 2 N 3 F R R No 2 thread ﬂ atlock stitch wide 4 2 5 3 3 5 S Yes 2 thread ﬂ atlock stitch narrow 4 2 3 3 5 S Yes Overview of machine settings 36 ...

Страница 37: ...ngth Cutting width Stitch ﬁ nger position 2 thread converter Blue Green Red Yel low 2 thread overedge seam wide N 3 5 3 3 5 S Yes 2 thread overedge stitch narrow N 3 5 3 3 5 S Yes 2 thread rolled hem stitch 4 1 F R R Yes Overview of machine settings 37 ...

Страница 38: ... tension Stitch length Cutting width Stitch ﬁ nger position 2 thread converter Blue Green Red Yel low 2 thread rolled hem stitch folded 1 2 F R R Yes 2 needle 3 thread over edge stitch 1 2 4 3 3 5 S Yes Overview of machine settings 38 ...

Страница 39: ...no 90 14 2 5 4 0 mm Standard 3 0 mm Heavyweight cotton and linen Oxford denim tweed cord serge Cotton no 40 60 Silk no 40 60 Synthetic ﬁ bre no 60 80 Polyester no 50 80 Type 2022 no 90 14 2 5 4 0 mm Standard 3 0 mm Tricot fabric Synthetic ﬁ bre no 80 90 Polyester no 60 80 Type 2022 no 80 12 2 0 4 0 mm Standard 2 5 mm Jersey Cotton no 60 80 Synthetic ﬁ bre no 60 80 Polyester no 50 60 Type 2022 no 8...

Страница 40: ...as shown in the illustration 4 Put the needles in the highest position by turning the handwheel 27 towards you 5 Carefully pull the free end of the yarn until the joining knot has passed all thread guides and reaches the eye of the needle 6 Then cut the knot and thread the new yarn through the eye of the needle 7 You can pull the looper threads until the thread has passed the looper eyes Handle Th...

Страница 41: ...gular stitches 2 0 4 0 mm Default setting 3 0 mm Narrow stitches 1 0 2 0 mm Hemstitches 1 0 2 0 mm Top stitching 2 0 3 0 mm Setting the cutting width Depending on the material it may be necessary to vary the cutting width Check each time which stitch width is suitable using a sample stitch You can freely adjust the cutting width from 3 to 4 5 mm To do so proceed as follows 1 Fold down the front ﬂa...

Страница 42: ...ng and the respective cutting width marking on the throat plate line up 5 Position the upper knife back in its original position and close the front ﬂap The ideal cutting width Front side Cutting width When the ideal cutting width is set the loops of looper thread lie gently against the edge of the fabric Setting the cutting width 42 ...

Страница 43: ... is too wide The loops of the looper threads lie too close to the edge of the material and the material curls up 1 Turning the cutting width setting control clockwise moves the lower knife to the left and decreases the cutting width Front side Thread is sewn across fabric edge SEWING TIP The fact that the edge of the fabric curls up as the result of a cutting width that is too wide can be used for...

Страница 44: ...trol 36 is set to R 4 Use one hand to hold the free arm in place and turn the dial for the knife ﬁtting 30 to the right 5 Then turn the knife ﬁtting clockwise forwards until the knife has been rotated through 270 6 Ensure that the pin in the knife ﬁtting catches in the dial groove to ensure the safe hold 7 Close the front ﬂap and continue your sewing work 8 Proceed in the reverse order to re engag...

Страница 45: ...s on page 17 Please refer to the table in section Overview of machine settings on page 33 for the various applications of the two thread converter 1 Switch off the machine and pull out the mains plug 2 Open the front ﬂap 12 3 Depending on the desired seam see table in section 10 remove the needle that is no longer required and the threads for this needle and for the upper looper see also Replacing...

Страница 46: ...d converter locks into place in the looper eye If necessary use the tweezers to help 7 Follow the speciﬁed steps in the reverse order to remove the two thread converter 8 Place the two thread converter that is not required in the holder 11 provided behind the front ﬂap Converting to two thread operation 46 ...

Страница 47: ...r the left or right needle depending on the required seam and the corresponding thread see also Replacing needles on page 55 The machine is now ready for chaining with three threads In case of exclusive use of the right needle the stitch width is 4 mm Rear side 4 mm Front side Tight and loose chaining with three threads 47 ...

Страница 48: ...In case of exclusive use of the left needle the stitch width is 6 mm Rear side 6 mm Front side Tight and loose chaining with three threads 48 ...

Страница 49: ...to R 1 Switch off the machine 2 Open the front ﬂap 12 3 Disengage the upper knife 29 as described in section Disengaging the upper knife on page 44 4 Slide the stitch ﬁnger control 36 to R 5 Set the cutting width to R 6 Set the upper knife back to the original position 7 Close the front ﬂap Stitch ﬁnger control 49 ...

Страница 50: ...s 1 Switch off the machine 2 Open the front ﬂap 3 Disengage the upper knife 26 as described in section Disengaging the upper knife on page 44 4 Slide the stitch ﬁnger control to S 5 Set the upper knife back to the original position 6 Close the front ﬂap Stitch ﬁnger control 50 ...

Страница 51: ... It also prevents lightweight fabrics from puckering Functionality The machine has two sets of feed dogs one front set A and one rear set B Both of these sets move independently Due to the feed both sets of feed dogs can move at different speeds The feed can be set from 0 7 negative feed to 2 0 positive feed A B Differential feed 51 ...

Страница 52: ...B This amasses fabric under the presser foot preventing the fabric from becoming wavy Negative differential feed With negative differential feed the front feed dogs A do not move as much as the rear feed dogs B This stretches fabric under the presser foot offsetting unwanted puckering of the fabric Differential feed 52 ...

Страница 53: ...ontrol 28 The feed can also be set while sewing Use the following table to select a setting Application Feed type Setting Non wavy seams de sired puckering Positive differential feed 1 2 No differential feed Neutral feed 1 Pucker free seams Negative differential feed 0 7 1 Differential feed 53 ...

Страница 54: ...setting screw for the presser foot pressure 22 on top of the machine 1 Hold the handle up and guide a small screwdriver into the setting screw opening 2 Turn the screw clockwise to increase the pressure or anti clockwise to decrease the pressure To restore the default setting turn the screw clockwise until it strikes the upper cover Then turn the screw anti clockwise for 6 rotations The default se...

Страница 55: ...he supplied small screwdriver from the accessory compartment and remove the needle upper screw B for the left needle and lower screw A for the right needle 3 Push the new needles into the needle holder with the ﬂat side facing to the back When doing so ensure that they are pushed in as far as possible 4 Tighten the needle clamp screw again Once the needles have been inserted correctly the left nee...

Страница 56: ... screw and remove the screw and lower knife 3 Insert a new lower knife and tighten the screw Replacing the upper knife 1 Position the upper knife upwards as described above in section Disengaging the upper knife on page 44 2 Use the large screwdriver from the accessory box to loosen the screw and remove the screw and upper knife CAUTION Risk of crushing The spring of the knife ﬁtting dial is under...

Страница 57: ...oceed carefully and do not exert any pressure towards the dial with the screwdriver 3 Insert a new upper knife so that the upper edge of the knife lines up with the knife ﬁtting 4 Tighten the screw Replacing the knife 57 ...

Страница 58: ...the yarn correctly 24 Thread tension is too high Adjust the thread tension 31 Needles are inserted incorrectly Insert the needle cor rectly in the needle bar 55 Stitches are missed Needles are bent blunt or the tip is damaged Insert a new needle 55 Needles are inserted incorrectly Insert the needles cor rectly in the needle bar 55 Yarn has not been threaded correctly Thread the yarn again 24 Incor...

Страница 59: ...Upper knife is blunt or insert ed incorrectly Replace the knife or insert it correctly 56 The edge of the fabric puckers Fabric feed has not been adjusted Set the feed to 0 7 1 41 Too much fabric in one stitch Adjust the cut width Lighting does not work LED is defective Contact our Service Centre Storage Store the sewing machine in a dry location to prevent rust from forming on the metallic mechan...

Страница 60: ...xterior housing Do not use chemical solvents or cleaning products because these may damage the appliance s surface and or labelling This machine requires only a little oil because the main components are made of a special material 1 Disconnect the machine from the power supply before opening the machine 2 Open the front ﬂap 12 Remove the accumulated dust and lint using the lint brush from the acce...

Страница 61: ...lustrated may not be disposed of in ordinary household waste In accordance with Directive 2012 19 EU these appliances must be disposed of correctly at the end of their service life This involves separating the materials in the appliances for the purpose of recycling and minimising the environmental impact Take old appliances to a collection point for electrical scrap or a recycling centre Contact ...

Страница 62: ...40V 50 Hz Protection class II Number of threads 4 or 3 Number of needles 2 or 1 Sewing speed Up to 1200 stitches per minute Stitch width 6 mm with 4 threads 6 mm or 4 mm with 2 or 3 threads Stitch length F 1 0 mm to 4 mm Presser foot height 4 5 mm Needle 2022 no 80 11 80 12 and 90 14 Dimensions approx 334 mm x 289 mm x 262 mm WxHxD Weight approx 6 1 kg 62 ...

Страница 63: ...lso contact our Service team via our hotline or by post Opening times Hotline number UK Mon Fri 08 00 20 00 Sat Sun 10 00 16 00 0333 3213106 Hotline number Ireland 1 800 992508 Service address MEDION Electronics Ltd 120 Faraday Park Faraday Road Dorcan Swindon SN3 5JF Wiltshire United Kingdom You can download this and many other sets of operating instructions from our service portal at www medion ...

Страница 64: ...ical electronic and any other forms of reproduction are prohibited without the written permission of the manufacturer Copyright is owned by the company MEDION AG Am Zehnthof 77 45307 Essen Germany Please note that you cannot use the above address for returns Please always contact our Customer Service team ﬁrst 64 ...

Страница 65: ...of three years in order to fulﬁl your legal warranty rights You have the right to be informed of the personal data concerned as well as the right to rectiﬁcation erasure restriction of processing the right to object to processing and the right to data portability In the case of the right to be informed and the right to erasure restrictions apply according to paragraphs 34 and 35 of the BDSG Federa...

Страница 66: ...66 ...

Страница 67: ... once it has been brought to our attention In the unlikely event of such an occurrence or if you require any information about the product please contact us via our helpline support services details of which are to be found both in this manual and on the product itself GB IE AFTER SALES SUPPORT www medion co uk 0333 3213106 1 800 992508 MODEL MD 19077 709395 02 2021 3 YEAR WARRANTY GB IE Standard ...

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