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Instructions for service

4220 - 6

Minerva Boskovice, a.s., Sokolská 60, CZ - 680 17

Boskovice

Tel.: +420-501-453434, 453433, 494111

Fax: +420-501-452165 http://www.minerva-boskovice.com

Edition: 08/2002 Printed in Czech Republic

S735 000519

Содержание 4220-6

Страница 1: ...s for service 4220 6 Minerva Boskovice a s Sokolsk 60 CZ 680 17 Boskovice Tel 420 501 453434 453433 494111 Fax 420 501 452165 http www minerva boskovice com Edition 08 2002 Printed in Czech Republic S...

Страница 2: ...ront guide 3 4 3 Setting the rear guide 3 4 4 Setting of the rear and side guides 3 4 5 Setting the guide of the needles stitch widths with needles side by side 3 5 Threadtensionersandlimiter 10 3 5 1...

Страница 3: ...brication 25 3 13 1 Description 3 13 2 Refilling oil 3 13 3 Multiple oil use 4 Threadtrimming 26 4 1 Description of the trimming mechanism 4 2 Setting the pickup roller 4 3 Setting the cam 4 4 Setting...

Страница 4: ...ate actions of the operator may lead to dangerous situations In industrial sewing machines attention should be paid to the following still remaining possible sources of injury 1 Moving sewing needle r...

Страница 5: ...it until the motor stops Loosen both screws 2 By turning the screws 3 and 4 set the required distance A After having set it tighten carefully the screws By axial shifting of the gear wheel 5 set the a...

Страница 6: ...the regulating screw set up the required clearance between the needle 2 and the protecting sheet 1 When turning to the right the clearance is being reduced and vice versa Check up the protecting effec...

Страница 7: ...wheel 1 relative to the gear wheel 2 should ensure the accessibility of the screw 5 at the moment when the hook point comes to lie opposite the needle 4 The wheel 2 is to be set with its gear rim symm...

Страница 8: ...he machine arm The connecting rod 10 of the needle bar 11 is mounted on the crank 3 in a ball bearing on the needle bar carreer it is mounted in a sliding way The greasing system of the mecha nism is...

Страница 9: ...osition of this holder is in such case when the needle bar is lined up with the presser foot bar The needle bar holder can be set as follows Caution Danger of injury Switch off the main switch Before...

Страница 10: ...3 3 3 Side setting of the throat plate post and setting of the needle bed shifting The throat plate post 1 and the needle holder 2 are to be mutually positioned in such a way so that with the given st...

Страница 11: ...d set the correct height of the guide 1 Tighten then the screw Loosen the screw 5 and set the guide 1 in the direction of sewing in front of the left needle at the moment when the needle starts pierci...

Страница 12: ...e sewing direction tighten the screw Check the influence of the setting on the stitch locking 3 4 5 Setting the guide of the needles stitch widths with needles side by side The side setting of the gui...

Страница 13: ...ated by means of the nut 1 The force of tensioning the thread is measured by the dynamometer 2 as it is shown on the illustration The size of this force differs according to the category of sewing and...

Страница 14: ...t the pieces 5 and 6 are at the distance C 3 mm set the angle A 45 and tighten the screw 11 Turn the washer with the nose 7 in such a way that the distance B 3 mm is attained Put the screwdriver into...

Страница 15: ...when setting the 90 angle on the handwheel 2 when the setting bar 3 is pushed into the eccentric 1 and leans from above against the feeding shaft 4 Caution Danger of injury Switch off the main switch...

Страница 16: ...ection and above and below the throat plate as well Caution Danger of injury Switch off the main switch Before starting the setting operation wait until the motor stops Using the handwheel set the nee...

Страница 17: ...th a thoroughly screwed in knob 9 and with turning the handwheel at 0 This setting can be done only after having set the top eccentric according to the paragraph 3 6 2 1 Caution Danger of injury Switc...

Страница 18: ...hen the screws 5 and turn the knob in the clockwise direction and inversely Tighten firmly the screws 5 Insert a screwdriver into the hole 8 of the scale 2 and adjust the scale in such a way that the...

Страница 19: ...the draw bar 3 from the feeding mechanism and by the carrier disk 5 which is firmly connected with the shaft 6 The draw bar 3 imparts the clutch its oscillating motion The clutch is being engaged by m...

Страница 20: ...moment when the star 3 does not move which means when it is in a dead centre of its oscillating motion This corresponds to the angler 90 on the handwheel Caution Danger of injury Switch off the main...

Страница 21: ...leys are in line The setting thereof is to be done as follows Caution Danger of injury Switch off the main switch Before starting the setting operation wait until the motor stops Loosen the screws 1 o...

Страница 22: ...the feeding shaft 22 from the arm in such a way that it is possible to remove the indented belt 23 from the arm of the machine Replace the belt with a new one and proceed to the assembly inverted pro...

Страница 23: ...chine can be supplied with two types of top roller namely with the diameter of 25 mm and with the diameter of 35 mm The suitability of the diameter used depends on the type of sewing and on the concre...

Страница 24: ...nd of the pressing force of the top roller Check the setting in the bottom dead centre of the bottom feeder the feeder is below the throat plate The top roller in thos position of the feeder must fit...

Страница 25: ...winding operation using the cutting device 5 3 9 2 Setting the bobbin winder stop The moment of interrupting the winding is determined by the mutual position of the pickup lever 1 and the cam 5 on a...

Страница 26: ...opposite case when the hook is blocked but the clutch does not disengage the disengaging moment of the clutch is to be reduced in turning the screws to the left Caution The clutch guarantees only one...

Страница 27: ...indented belt on the indented pulley 4 Tension the belt and mount the dismantled components in the inverse order 3 12 V belt motor head 3 12 1 Tensioning Caution Danger of injury Switch off the main s...

Страница 28: ...clutch The wicks 10 lubricates the gears of the hooks drive 3 13 2 Refilling oil For lubricating the machine oil Esso SP NK 10 is used or other oil with the same quality When putting the machine into...

Страница 29: ...the loosened screw 4 put the holder of the pickup roller 1 up to the stop against the bracket 5 and at the same time the shaft 2 up to the stop against the shaft 3 With the holder 1 held on the stop s...

Страница 30: ...e of the throat plate Caution Danger of injury Switch off the main switch Before starting the setting operation wait until the motor stops Loosen the screws 4 and 5 Turn the moving trimming knife 1 in...

Страница 31: ...k tension and differs then according to the respective sewing category The adjusting screw 2 should not be screwed in in such a way that the retaining spring gets over the perimeter of the moving trim...

Страница 32: ...st be set in such a way that it enables the maximum stitch length when sewing in forward and in rearward sense If this position is not correct the length of the stitch will be shortened in one or the...

Страница 33: ...nts of the machine head 8 Drive control panel position sensor The detailed information concerning the drive the control panel and the setting of the position sensor is given in the manual of the drive...

Страница 34: ...must be in accordance with the given machine setting which includes also the replacement of some components such as the needle the throat plate insert the spring of the main tensioner the top roller F...

Страница 35: ...the needle number it is necessary to correct the setting of the distance of the shuttle from the needle according to the paragraph 3 1 3 and at the same time the setting of the fixed trimming knife o...

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