Instructions for service
1280 - 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: 06/2001 Printed in Czech Republic
735 342 000 477
Page 1: ...for service 1280 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 06 2001 Printed in Czech Republic 735...
Page 2: ...h widths with needles side by side 3 5 Threadtensionersandlimiter 9 3 5 1 Description 3 5 2 Setting the tension of main and auxiliary tensioners 3 5 3 Setting the tensioning mechanism of the main tens...
Page 3: ...filling oil 3 13 3 Multiple oil use 4 Threadtrimming 25 4 1 Description of the trimming mechanism 4 2 Setting the pickup roller 4 3 Setting the cam 4 4 Setting the fork 4 5 Setting the moving knife 4...
Page 4: ...actions of the operator may lead to dangerous situations In industrial sewing machines Minerva attention should be paid to the following still remaining possible sources of injury 1 Moving sewing need...
Page 5: ...slide plate 1 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 axial cleara...
Page 6: ...t the screwdriver into the hole of the screw 3 and using the regulating screw set up the required clearance between the needle 2 and the protecting sheet 1 When turning to the right the protecting she...
Page 7: ...e 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 symmetrically to the centre of the gear wheel 1 The clear...
Page 8: ...entric pivot 3 The needle rod holder 4 is mounted through the pivot 5 in a rotating way in the arm 6 In its top part the holder is guided by the guide pin 7 The movement for the needle feed is given t...
Page 9: ...d pin 2 Set the pin into the corresponding position and tighten anew the screw The correct position is given by the flat on the pin 2 on which the screw 1 is tightened 3 2 5 Side setting of the needle...
Page 10: ...starting the setting operation wait until the motor stops According to the table 11 3 limit the maximum stitch length for the respective stich width and the sewing cate gory see 3 5 2 4 Set the maxim...
Page 11: ...is set 1 2 mm above the bottom edge of the feeding wheel namely according to the hardness of the sewn material Caution Danger of injury Switch off the main switch Before starting the setting operatio...
Page 12: ...by the dynamometer 2 as it is shown on the illustration The size of this force differs according to the category of sewing and is indicated in the par 11 2 The tension of the auxiliary tensioner is r...
Page 13: ...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 the slit in the bushing 8 and turn it in c...
Page 14: ...dwheel 2 and lock it with the screw 5 which is included in the accessory of the machine tighten it carefully Insert the setting stick 3 into the hole in the eccentric 1 and prop it against the feeding...
Page 15: ...e first sewing category where the stitch length of the indicator is 3 mm Caution Danger of injury Switch off the main switch Before starting the setting operation wait until the motor stops Screw in t...
Page 16: ...e friction connection with the cover of the clutch 1 is disconnected Within a short instant when engaging and disengaging with the carrier plate 5 there are in a friction engagement both the cover 1 a...
Page 17: ...the shifting of the clutches is done at the moment when the clutch disks 3 do not move which means when they are at the dead center of their oscillating movement This corresponds to the angle 90 on th...
Page 18: ...f the machine feeder pitch of the teeth Caution Danger of injury Switch off the main switch Before starting the setting operation wait until the motor stops Unscrew the screws 1 and remove the throat...
Page 19: ...he articulated shaft 9 contains two joints 15 and a telescopic part 16 Both these elements secure the lifting and the tilting of the top roller 3 7 2 Side setting of the indented lower pulley The pull...
Page 20: ...setting operation wait until the motor stops Loosen the screw 1 of the tensioning roller 2 and loosen it Loosen the screws 3 of the pulley 4 and shift it to the left in such a way that the screws 5 a...
Page 21: ...between the front faces of the screw 2 and the nut 1 3 7 7 Replacement of friction wheels of the drive conversion unit The worn friction wheels 1 and 2 of the drive conversion unit are to be replaced...
Page 22: ...ng the holder 2 with the top roller 3 in the groove of the holder 4 set the required value X and tighten the screw 1 Loosen the screw 5 By shifting the holder 2 in the holder 6 set the bottom edge of...
Page 23: ...resser foot when lifting the foot with knee lever or with electromagnet is to be A 12 5mm 0 7mm Caution Danger of injury Switch off the main switch Before starting the setting operation wait until the...
Page 24: ...bin the pressing function of the cam on the winders shaft is interrupted and it moves in the sense of the arrow A fine setting is to be done on an incorporated condition in the machine Using the screw...
Page 25: ...n 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 mutual position o...
Page 26: ...y 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 switch Before starting the setting o...
Page 27: ...ubricates the shifting wedge of the feed clutch 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 operation ea...
Page 28: ...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 shift the shaft 2 in such a way that there appears the gap A 0 2 to 0 4 mm...
Page 29: ...ry 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 the sense of the arrow and set it in height...
Page 30: ...tive sewing category 4 8 Setting the switching of electromagnets The electromagnets of the trimming device and loosening of the tensioner must work in accordance with the diagram This is ensured by se...
Page 31: ...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 other feed direction...
Page 32: ...el 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 and of the control panel 9 Lighting 9 1 Mo...
Page 33: ...ht sewing 2 medium sewing 3 medium heavy duty sewing 4 heavy duty sewing In the factory where this machine has been manufactured the machine has been set with respect to the standard parameters of the...
Page 34: ...sion of the retaining spring of the trimming device according to the paragraph 4 7 7 When changing markedly the sewing category together with a marked change of the needle number it is necessary to co...
