DURKOPP ADLER LP 2971 Instruction Manual Download

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LP 2971
LP 2974

Industrial sewing machine

Instruction manual

Postfach 17 03 51, D-33703 Bielefeld • Potsdamer Straße 190, D-33719 Bielefeld
T49 (0) 521 / 9 25-00

•

T49 (0) 521 / 9 25 24 35 •

www.duerkopp-adler.com

Ausgabe / Edition:

Änderungsindex

Teile-Nr./Part.-No.:

06/2012

Rev. index:

00.0

Printed in Czech Republic

0791 888761

Summary of Contents for LP 2971

Page 1: ...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 CZ Ausgabe Edition Änderungsindex Teile Nr Part No 06 2012 Rev index 00 0 Printed in Czech Republic 0791 888761 ...

Page 2: ...d 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 2012 ...

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: ...ersons 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 technicians 8 Work on the electrical equipment must be carried out only by electricians...

Page 5: ...djusting the thread regulator 14 6 7 Changing the needle with single needle machines with the hook on the right 15 6 8 Changing the needle with double needle machines 16 6 9 Lifting and folding the roller presser 17 6 10 Sewing foot pressure through the setting wheel 18 6 11 Sewing backward feeding backward backtacking 19 6 12 Setting the stitch length 19 6 13 Switching on the safety clutch at the...

Page 6: ...Notes ...

Page 7: ...ne arm The part of the oil with which the hook is lubricated is devaluated The other part of the lubrication oil is returned to the central tank by a pump Integrated bobbin winder 2 Designated use The class LP 2971 LP 2974 is designated for sewing shoe leather and upholstery sewing In general the material sewn is leather natural or artificial It is possible to use it for shoe fabrics too The equip...

Page 8: ...and large hook electro magnetic thread cutter electro magnetic seam bartacking and sewing foot lifting LP 2974 Double needle double lockstitch post bed sewing machine with feed wheel blocked needle feed with driven roller foot and large hook electro magnetic thread cutter electro magnetic seam bartacking and sewing foot lifting 6 ...

Page 9: ... N800 080030 Rectractable material guide x x N800 080040 Retractable roller material guide x x 9081 300001 Tool kits M type x x Stand MG 55 400334 Stand set MG 55 3 x x x x x x x x x x x for toothed belt drive with pedal Table top size 1060 x 500 mm x Optional equipment o Standard equipment Additional optional equipments can be requested E Mail sales minerva boskovice com marketing duerkopp adler ...

Page 10: ...of needles 1 2 Needle system 134 Needle size 160 depending on E No Nm Max thread thickness Nm 10 3 Stitch length mm Forwards 7 5 for E55 2 0 and E56 2 4 Backwards 7 5 for E55 2 0 and E56 2 4 Max Speed min 1 3000 Number of stitches with factory setting min 1 2500 Max sewing foot stroke mm 12 Dimensions H x W x D mm 550 220 600 ...

Page 11: ...according to fig B The thread 1 designed for the left needle is to be threaded in the left tensioners and in the upper hole in the thread lever 3 The thread 2 designed for the right needle is to be threaded in the right tensioners and in the upper hole in the thread lever 3 Thread the needles arranged side by side according to fig B Thread the diagonally arranged needles according to fig C right n...

Page 12: ...diately and press the lever 3 6 3 Inserting the bobbin and threading the hook thread Caution Risk of injury Switch the main switch off and wait till the motor stops Tilt the shutter 1 up Insert the bobbin 2 with the thread end 3 oriented according to the picture Thread the thread through the slit 4 and space 5 hook upon the shutter 1 and fasten it under the spring 6 Trim the thread ends according ...

Page 13: ...ed in the factory in dependence on the selected sewing equipment according to the table below and it is suitable for the usual sewing operations For sewing thin soft materials it is necessary to reduce the tension If the seam is to be tightened strongly it is necessary to increase the tension and reduce the sewing speed at the same time Thread tension of the hook located to the left of the needle ...

Page 14: ...tched off at the foot lifting Adjusting tensioners 2 and 3 with electro magnetic control Regulate the thread tension with the tensioner 3 till a good thread loop is achieved see below Regulate the thread tension with a tensioner 2 till a good thread loop is achieved see below Regulate the tension by both tensioners 2 and 3 at the same time so that their nuts are screwed approximately in the same h...

Page 15: ...c lifting If the automatic foot lifting at the machine stop is pre selected the tensioners are switched off but temporarily only so that the switching off electric magnet does not overheat Tensioners 2 and 3 are also switched off temporarily during the trimming cycle Tensioners 2 and 3 are not switched off at the foot lifting with the hand lever 13 GB 2 3 1 ...

Page 16: ...e thread regulator 2 controls the quantity of needle thread required for stitch formation The thread regulator must be precisely adjusted for an optimum result Loosen the screw 1 shift the thread regulator 2 and tighten the screw 1 14 2 1 ...

Page 17: ...screw 2 Remove the needle and insert a new one with the needle scarf 3 to the right see section 4 or 5 The needle may not be oriented as shown at section 6 Tighten screw 2 Caution Danger of breakage A false orientation of the needle may damage the hook point When changing to another needle size the distance between hook and needle as well as the position of the throat plate towards its post must b...

Page 18: ... with the needle scarf 2 oriented as shown above see section 3 or 4 The needles may not be oriented as shown at section 5 Tighten the screws 1 Caution Danger of breakage A false orientation of the needle may damage the hook point When changing to another needle size the distance between hook and needle as well as the position of the throat plate towards its post must be readjusted see service inst...

Page 19: ...e roller presser or the needle guides of the double needle machines Roller presser lifting with a pedal automatically The roller presser lifting in the machines equipped with a positioning motor drive can be controlled by the pedal 4 treading in the position 1 see chap 6 14 1 The roller presser is lifted to the upper dead point by means of an integrated electric magnet After the pedal is released ...

Page 20: ...ing foot roller pressure is set with the setting wheel 1 To increase the roller pressure turn the setting wheel 1 clockwise To decrease the roller pressure turn the setting wheel 1 anti clockwise The roller pressure is to be as small as possible but strong enough so that the roller presser is not lifted by the needle friction in the material during the upward movement and that the feeding is relia...

Page 21: ...selected backstitches number both at the beginning and at the seam end At the seam beginning after the preceding thread trimming after the pedal treading forwards the machine sews the pre selected bartack entirely automatically The same at the seam end after the pedal treading in the position 2 the machine sews the pre selected end bartack and then trims the threads see chapter 8 6 12 Setting the ...

Page 22: ...h the safety clutch on with the sewing machine switched off Turn the hand wheel until you hear a switching click snapping of the safety clutch Turn the hand wheel in the opposite direction until the hook gets released If the safety clutch remains switched off accidentally insert a screwdriver 1 in the hole 2 and turn the hand wheel until the safety clutch gets switched Free up the blocked hook by ...

Page 23: ... See notes 1 Slightly forwards Command for foot lowering 2 Further forwards Sewing at minimum speed 1 speed gear 3 Further forwards Sewing 2 speed gear 13 Fully forwards Sewing at maximum speed 12 speed gear Note In addition to the neutral position it is possible to pre select the needle position down up and the foot position down up at the stopping in the seam by the pedal positioning in the neut...

Page 24: ... The machine sews backward stitches as long as the key is being pushed 2 Needle positioning to the upper or lower position By parameter F 242 DA321 the following key functions can be defined 1 needle up down 2 needle up 3 one stitch factory setting is 1 22 1 2 ...

Page 25: ...hout the control panel it is not possible only to program the sewing It is possible to connect the control panel V810 and V820 which are available as an attachment It is possible to program the sewing by the control panel V820 A detailed description of the control is included in the operating manual of the motor manufacturer of Efka DC1500 DA321G drive see also www efka net 23 GB ...

Page 26: ...itch number forwards Decorative bartack stitch number forwards Standard bartack stitch number backwards Decorative bartack stitch number backwards End bartack Single Double Standard bartack stitch number backwards Decorative bartack stitch number backwards Standard bartack stitch number forwards Decorative bartack stitch number forwards Thread trimming ON OFF Automatic foot lifting Foot lowered at...

Page 27: ... bartacks Double initial bartack Double end bartack Thread trimming on Foot lowered at stopping in seam Foot lifted at seam finishing Operation Sewing procedure Machine stopped Needle in upper position Foot lifted Insert the material Pedal treading to position 1 Foot lowering Pedal release to position 0 Foot lifting Material position correction Pedal treading to position 1 Foot lowering Pedal trea...

Page 28: ...e g with an air blow gun Places in special need of cleaning Area under the throat plate feeding roller 2 top roller and its surrounding Area around the hook 1 Bobbin housing 6 Thread trimmer Area around the needle CAUTION Be sure to hold the blow air gun so that no sewing dust is blown into the oil sump 8 Remove lint pieces of thread e g with an air blow gun Remove the throat plate Remove the thre...

Page 29: ...be carried out hours Clean the oil sump Clean the oil sump 1 of dirt and contaminated oil you may use a special vacuum cleaner 20 Clean fan grille Remove lint and pieces of thread from air intake openings 2 e g with an air blow gun 20 27 GB 1 2 ...

Page 30: ... 40 C 10 mm s Flashpoint 150 C DA 10 is available from DÜRKOPP ADLER AG retail outlets under the following part numbers 250 ml container 9047 000011 1 litre container 9047 000012 2 litre container 9047 000013 5 litre container 9047 000014 All points of the sewing machine head lubricated with oil are supplied from the central tank 1 If the oil volume drops to the level 3 supply the oil through the ...

Page 31: ...hine head 11 5 Electrical connection 5 1 Electrical connection to low voltage network 12 5 1 1 Sewing light transformer connection to network voltage 13 5 2 Grounding 14 5 3 Connection of head to Efka DC1550 DA321G drive 15 6 Adjustment of Efka positioning motor drive 6 1 Setting of positioning motor drive parameters 16 6 1 1 Setting of parameters by the autoselect function 16 6 1 2 Setting of Efk...

Page 32: ...Notes ...

Page 33: ...al sewing machine of which all individual components can completely be delivered by Dürkopp Adler AG Machine with the direct drive on the machine head Obligatory components Machine head 1 Accessories includes oil tank 2 yarn stand 3 tools and other items Set of parts with motor includes direct drive 5 belt guard 4 and other parts Optional components Stand 6 Control panel 8 3 GB 1 3 7 4 8 6 5 2 ...

Page 34: ...aps and wooden battens on the machine head and stand Safety blocks and straps on the sewing drive 3 Assembling the stand 3 1 Assembling the stand components Mount the frame according to the picture Mount the pedal 1 provisionally Its position will be adjusted after the whole machine is complete Adjust the screw 2 so that the stand is stable 4 1 2 3 ...

Page 35: ...there is any Mount electric cables according to the instructions in chapter 5 Pre bore the holes 10 Attach the table plate to the stand with woodscrews B8 x 35 Then turn the stand to normal position Insert the yarn stand 11 in the hole in the table plate and secure it with the nuts and washers Fit and align the yarn reel and unwinding holders Insert the machine head support pin 12 Place the hinge ...

Page 36: ...d make sure that it is identical on both sides To do that use the scale on the stand feet Set the stand height so that it corresponds with the operator s body proportions Tighten both screws 1 Caution Risk of injury Failure to adjust the stand height to the operator s body proportions can cause damage to the operator s locomotion system 6 1 ...

Page 37: ...ead Tilt the machine head 1 and insert it in the table top recess After the head insertion screw the locking plate 2 immediately to secure the machine head against falling out at its tilting The locking plate is part of the machine head accessories 7 GB 2 1 ...

Page 38: ...ear mount the proximity switch 3 It is included in the kit for motor In all machines with the motor on the machine head mount the guard 2 it is included in of the motor part set Mount the hand wheel 1 Doing this observe the correct angle position if the needle is in the upper dead point there should be the 0 value on the hand wheel scale 8 1 2 3 ...

Page 39: ...dal 1 so that its center lies on the needle axis Adjust the draw rod 2 so that the foot axis is perpendicular to the pedal surface Caution Risk of injury Failure to keep the determined pedal position can cause damage to the operator s locomotion system 9 GB 2 1 2 90 3 ...

Page 40: ...4 4 Fitting the oil pump pipe Tilt the machine head 1 Attach the pipe 2 with the clips 3 and install the suction basket 4 TIlt the machine head 10 3 4 2 1 ...

Page 41: ... together with it to enable the installation of the lighting body in two positions Position 5 is the basic one Position 7 should be used if a guide for sewing material is mounted on the machine Dismantle the upper cover and back cover of the machine head Install the connecting cable with the connector 1 according to the picture Install the control panel 2 with the bracket 3 and install the cable 4...

Page 42: ... voltage in the local network The low voltage circuit includes the following items Supply plug Main switch with the drive on the machine head the main switch is incorporated in the drive Drive Sewing lamp transformer option Cables Part of these items is included in the drive package The other part is included in the package of the motor part set obligatorily supplied with the machine head The divi...

Page 43: ...screws on the front panel of the control box Dismantle the front panel Pull the transformer cable through the channel 1 in the control box Remove the black rubber bushing 2 Pierce the bushing with a screwdriver Pull the sewing lamp transformer cable through the arisen hole Insert the rubber bushing back again Press the clip openers 3 and 4 with a small screwdriver slightly until the clips 5 and 6 ...

Page 44: ...g conductor to the relevant grounding point of the drive indicated Attach the conductor with a clip on the bottom side of the table top Caution Make sure that the grounding conductor does not touch the driving V belt if there is any Note If the machine has the direct drive with the motor drive on the machine head it is not necessary to ground the head In that case the head is grounded with the mot...

Page 45: ...nly for the 1 1 gear reduction motor machine Connect the machine head connecting cable to the connector 1 Connect the control panel to the connector 2 Connect connector 3 of the motor synchronizer 6 to connector 4 Connect the connector 5 of the motor 6 to the connector 7 Connect the pedal position sensor 8 to the connector 9 Connect hand wheel position in connector B18 15 GB 7 4 1 2 9 3 5 6 8 B 7 ...

Page 46: ...ich is able to identify what sort of the sewing machine was connected to the drive with a connection cable At the drive switching on the value of the resistance of the resistor located inside the sewing machine head for this purpose is measured automatically As a result of this the required parameter values are set automatically If the control system is not able to identify the valid resistance th...

Page 47: ... scale Position 2 The needle is up after trimming The angle 35 is on the hand wheel scale 6 2 2 Setting the machine positioning for DC1550 DA321G drive For the needle and other elements positioning the incremental sensor located on the hand wheel is applied which gives 512 impulses increments value in is displayed on the display and one additional impulse per rotation In general the particular pos...

Page 48: ...ion 2 Tread the pedal forwards shortly at first and then entirely backwards with the heel until the machine stops The machine stops in the position 2 see chapter 6 2 1 Check the angle on the hand wheel scale 35 5 6 3 Master reset By means of the so called master reset all changed values are set back to the preset ones again How to proceed with the master reset is described in the instructions of t...

Page 49: ...rn on the main switch Lock the sewing foot in the lifted position see operating instructions Fill the bobbin at low speed Turn off the main switch Thread in needle thread and bobbin thread see operating instructions Select the material to be sewn Carry out the sewing test first at low speed and then gradually increase the speed Check whether the seams are of the desired quality If the quality requ...

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