Instructions for service
4180 - 1
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
735 342 000 405
Page 1: ...for service 4180 1 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: ...iliary tensioners 3 4 3 Setting the tensioning mechanism of the main tensioner 3 4 4 Setting the adapting spring 3 4 5 Setting the thread limiter 3 5 Feeding mechanism of the needle feed and of the lo...
Page 3: ...rimming 24 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 6 Setting the height of the fixed knife and o...
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: ...ntil the motor stops Remove the guard 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 wh...
Page 6: ...een the protective sheet and the hook body 3 we shall reduce the play by levering in applying the pressure on the protective sheet in the sense of the arrow 4 we shall increase the play Check up the p...
Page 7: ...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 clearance between the gear wheels is...
Page 8: ...ed for a big or a small hook The needle bar holder 4 is mounted through the pin 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 fee...
Page 9: ...in shaft Set the connecting rod pin as follows Caution Danger of injury Switch off the main switch Before starting the setting operation wait until the motor stops Remove the front guard Loosen the sc...
Page 10: ...the edge of the piercing hole must be the same both at the beginning and at the end of the needle feeding Caution Danger of injury Switch off the main switch Before starting the setting operation wait...
Page 11: ...d 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...
Page 12: ...es 3 4 5 Setting the thread limiter The thread limiter is to be set in such a way that when sewing and passing the thread through the most distant point of the hook the spring 2 shifts by about 1 4 to...
Page 13: ...e handwheel 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 fe...
Page 14: ...st 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 the sc...
Page 15: ...t profiled spring 2 against the cover of the clutch 1 In the position when the wedge is disengaged the star 4 is pushed against the plate 5 lining and at the same time the friction connection with the...
Page 16: ...e 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 the...
Page 17: ...tained but only to the measure of not deteriorating the beginning of sewing after the carried out thread trimming With every correction of the teeth height the tension of the chain 2 is to be correcte...
Page 18: ...ew 4 Setting the force of the top roller 1 In screwing in the screw 2 the force of the top roller is increased and inversely 3 6 Feeding mechanism of the top roller 3 6 1 Description The starting move...
Page 19: ...etting 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 of the pulley 2 Set the...
Page 20: ...y 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 procedure of dismantling Proceed to the setting op...
Page 21: ...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 concrete technological operation There are in general valid the...
Page 22: ...ment of the top roller When replacing the top roller proceed as follows Caution Danger of injury Switch off the main switch Before starting the setting operation wait until the motor stops Unscrew the...
Page 23: ...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 24: ...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 of...
Page 25: ...h off the main switch Before starting the setting operation wait until the motor stops The belt is correctly tensioned when the opposite sides of the belt approach one to another by up to 20 mm in app...
Page 26: ...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 each mechanism of the machine is to be lubricated w...
Page 27: ...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 28: ...the screw 4 4 6 Setting the height of the fixed knife and of the retaining spring of the lower thread The fixed knife 1 and the retaining spring 2 are fixed on the holder 3 This holder is fixed with t...
Page 29: ...ch a way that the retaining spring gets over the perimeter of the moving trimming knife 4 9 Setting the switching of electromagnets The electromagnets of the trimming device and loosening of the tensi...
Page 30: ...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 31: ...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 32: ...ewing 3 medium 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 required sewing category which is desig...
Page 33: ...modify the tension of the retaining spring of the trimming device according to the paragraph 4 7 6 When changing markedly the sewing category together with a marked change of the needle number it is n...
