Instruction manual 4280i - 6 Minerva Boskovice, a.s., Sokolská 60, CZ - 680 17 Boskovice Tel.: +420-516-453434, 453433, 494111 Fax: +420-516-452165 Edition/Vydáno/Herausgegeben/Edition/Editado: 05/2009 http://www.minerva-boskovice.
Contents - part A - Instruction manual: 1. Proper use of the machine ................................................................................................................................................ 1 2. Description of the machine ............................................................................................................................................... 1 3. Machine sub-classes and sewing categories ...........................................................................
Foreword This instruction manual is intended to help the user to become familiar with the machine and take advantage of its application possibilities in accordance with the recommendations. The instruction manual contains important information on how to operate the machine securely, properly and economically. Observation of the instructions eliminates danger, reduces costs for repair and down-times, and increases the reliability and life of the machine.
General safety instructions The non-observance of the following safety instructions can cause bodily injuries or damages to the machine. 1. The machine must only be commissioned of the instruction book and operated by persons with appropriate training. 2. Before putting into service also read the safety rules and instructions of the motor supplier. 3. The machine must be used only for the purpose intended. Use of the machine without the safety devices is not permitted.
Part A - Instruction manual 1. Proper use of the machine The machine can be used in the shoemaking industry for sewing of light medium and heavy shoe uppers. It is suitable for sewing natural and man made leathers, shoemaking textiles and even plastic parts of sports shoes. The machine is also used in the fancy goods industry for sewing bags, handbags, rucksacks and cases from the usual fancy goods materials. The machine sews with a double needle stitch.
3. Machine sub-classes and sewing categories 3.1 Sub-class Table 1 Type of the machine Top roller lift Class-subclass -sewing category Via knee lever 4280i-611-XXX 4280i-621-XXX* 4280i-647-XXX 4280i-657-XXX* • Treadle Reverse stitching Via electro- Via electromag. + mag. + knee lever treadle • • Via hand lever • • • Thread trimmer Via electromag. + hand lever • • • • * only for Czech republic 3.
4.1.3 Top roller holders M 156 - holder for the top roller ø 25 mm M 157 - holder for the top roller ø 35 mm M 295 - holder for the top roller ø 45 mm 4.1.4 Top rollers M M M M M M M M 172 - top roller ø 25 mm 173 - top roller ø 35 mm 174 - rubberized top roller ø 25 mm 175 - rubberized top roller ø 35 mm 310 - smooth top roller ø 25 mm 311 - smooth top roller ø 35 mm 296 - top roller ø 45 mm - width 2.0 mm 297 - top roller ø 45 mm - width 3.8 mm 4.1.
5.
6. Operation of the machine 6.1 Threading a thread Caution! Risk of injury! Before threading a thread, turn the main switch off and wait until the machine stops! Thread the threads as it is shown in picture. Caution! Not following the correct method of threading a thread may cause serious damage to the function of the machine. 6.2 Inserting the bobbin and threading the lower thread Caution! Risk of injury! Turn the main switch off and wait until the motor stops! 3 2 2 - Tilt the shutter (1) up.
6.3 Regulating the thread tension Fitting seam Stitch knitting The thread tension must conform to the thickness of the sewn threads, thickness and hardness of sewn material (thin and soft material will fold with high tension) and the kind of seam. An ordinary fitting seam should be formed with stitches knitted in the middle of the sewn material.
6.4 Bobbin thread winding - Insert the bobbin (1). - Spool counter-clockwise manually onto the bobbin, minimum six threads of the lower thread (3). - Insert the thread ends into the equipment (4) and cut off the ends. - Press the lever (2) until it reaches its limit. - Switch on the machine. - The winder will automatically switch off after winding. - Take off the hook bobbin and cut off the end in the equipment (4). - The nut (5) is instrumental to thread tension control for winding.
6.7 Lifting the top roller up Mechanical lifting of the top roller is enabled by means of the hand lever (1), which contemporarily, after it has been lifted in the arrow direction, is locking the top roller in its top position and turning (adjustment) of the machine is possible. The top roller can be lifted via knee lever or left treadle - depending on the machine sub-class. Automatical lifting by means of electromagnet is described in the paragraph No. 7.
7. Electronic control of the machine (it is valid for sub-classes equipped with stop motor) 7.1 Control of sewing by means of control elements 7.1.1 Via treadle (treadle positions and function possibilities) The position of the treadle is read by the reader, which can recognise 16 levels. Its meaning is shown on the table.
7.2 Adjustment of automatic functions via control panel for stop motor 7.2.
Note: The last section of end bar must have at least 3 stitches. Foot position adjustment by stopping at the seam (by neutral position of treadle) and after finishing seam (by neutral position of treadle): Setting is by means of pushbutton 3, arrow indication above the corresponding symbol. Needle position adjustment by stopping at the seam: Setting is by means of pushbutton 4. 7.2.1.2 Setting by means of parameters Drive memory contains the parameters which enables sewing system tuning.
ON/OFF thread trimmer: No. of parameter 013 C D E F G H I Value range of parameter Description of parameters ON/OFF Thread trimmer ON/OFF 7.2.
C D E F G H I Symbol P Symbol Q J K LM N O PQ Automatic revolutions ON Left needle disconnected The arrows on the display indicate switching the functions which are displayed by symbols above the pushbuttons on. 7.2.2.1 Adjustment by means of buttons with fixed setting function Note: It is important to finish the seam in order to reach effective button pressing (press the treadle fully backwards down). A Setting start bar: Drive enables sewing start bar automatically.
C D E F G H I J K LM N O PQ Note: 1. For permanent memory storing of changed parameter, it is necessary to press treadle forwards down after changing of parameters. 2. Mode of changing parameters is possible only after finishing of the seam. Number of stitches in bars: Number of stitches is stored in parameters number. No.
Operating instructions for eventual trouble shooting Meaning of abbreviations: NP - Instruction manual SK - Instructions for service Note: When the machine is driven by a stop motor, it is indispensable to check up, before starting its repair, the setting of its parameters according to NP, part B, par. 5. Trouble 1. Upper thread breaking. 2. Lower thread breaking. 3. Skipped stitches at the seam beginning after previous thread trimming. 1.1 Incorrect threading of the upper thread.
3.4 Upper thread incorrectly caught by movable trimming knife. Lumps of thread remaining in hook space. Set correctly hook opening according to SK, par. 3.1.6 and adjust setting of trimming cam according to SK, par. 4.3. 3.5 Needle too thick with regard to thickness of thread and sewn material. Use thinner needle. 4.1 Needle incorrectly inserted. Insert needle according to NP, par. 6.5. 4.2 Too big distance between needle and hook point. Set according to SK, par. 3.1.3 and 3.1.5. 4.
8. Sewn material wavy in seam. 8.1 Thread tension to high for sewn material. Reduce tension of both threads. 9. Machine does not feed or is feeding slowly or in reverse sense. 9.1 Overrun safety clutch against hook overload. Engage correctly clutch according to NP, par. 6.10. 10. Difficult and iregular machine feed. 10.1 Wheel feeder too low (especially when sewing soft and thick materials). Raise feeder more from throat plate according to SK, par. 3.6.3.2.1. 10.
Contents - part B - The instructions for assembling for assembling standard drives 1. Safety instructions ............................................................................................................................................................. 1 2. The way of machine supply ............................................................................................................................................... 2.1 Complete head with accessories ......................................
Part B - The instructions for assembling with standard drives 1. Safety instructions Caution ! Assembly of the machine must only be carried out by appropriately trained technician. Any operations to be performed on the electric installation of the sewing machine are to be done only by a competent electrician. 2. The way of machine supply The contents of supply will be determined in agreement between the supplier and buyer. There are following possibilities: 2.
Motors are chosen according to the following table: Machine subclass Ordered number X11 X21 S359 600030 63 S359 600030 50 S359 600030 42 FIR 1148 3 x 400/230 V, 2800 RPM, 50 Hz 63 50 42 Machine rev. Approx. specification max.
Sewing speed of machines: standard Mains voltage frequency: 60 Hz 1) Ordered number/motor pulley diameter 2) Model 4280-2XX-100 -200 4280-6XX-100 -200 -300 -400 Sewing speed (SPM) 2500 2500 2500 2000 1200 800 EFKA DC 1600/ DA82GA 3312 4000 RPM EFKA VD 552/ 6F82FA 3360 RPM FIR 1148/552/3 3360 RPM EFKA VD 554/ 6F82FA 1680 RPM FIR 1147F/554/3 1680 RPM S359 600045 810/ø 58 S359 600052 50/ø 50 S359 600030 50/ø 50 S359 600045 820/ø 58 S359 600052 50/ø 50 S359 600030 50/ø 50 S359 600045 810/ø 58 S359 600
4.2 Assembly of components on the bottom of table top - Put down antiskid (rubber) bands on the stand frame. - Turn the table top up side down and put it down on prepared bands. - By means of screws scerw the drawer (1)down. - Nail down the rubber stop (2). - By means of screws fasten transformer for lighting (3) if available. - By means of screws fastened transformer for trimming (4) if available. - By means of screws fasten switch – circuit breaker (5). - Screw the motor holder down (6) (possibly motor).
4.2.2 Power supply 3 x 400 V - five wire power distribution, power supply 3 x 230 V - four wire or five wire power distribution 1 3 5 13 16 5 170 5 55 A 60 4 7 B 2 6 Circuit layout - Europe Circuit layout - America 5 5 Power for sewn work cutter Machine stand Power for sewn work cutter Machine stand Machine head Machine head 4 Transformer for sewing area bulb Transformer for sewing area bulb 3 4 3 4.2.
A 1 4.3 Assembly of a table top on a stand frame, assembly of oil tank D B = ~82 A 3 3 2 - Turn the table top around and screw it down to the frame by means of screw ø 8 x 35 mm. When applying a frame different from that recommended by the producer, be sure to adapt its position so as to ensure the stability of the machine head in its tilted state.
4.5 Assembly of motor pulley, belt, belt covers, hand wheel 1 3 6 7 - Disassemble hand wheel (1). - Assemble motor pulley (2). - Insert V-belt (3) and tighten it by leaning out of the motor. Vbelt is tightened correctly when the opposite sides of belt are approaching to each other in distance of about 20 mm with power 10 having an effect in the middle of both sides. Stop motor should be leveled so that the bottom surface of its control panel would be horizontal.
- Loosen the screws (9) by clutch lever motor and turn the motor with lever in such a way that the lever (10) would be in direction of the rod axis (1). - Adjust angular turning of treadle (11). The position of treadle is correctly adjusted if there is a square angle at the shinbone of the operator to the treadle. 9 9 9 1 10 2 11 13 - Fasten knee lever (12) onto the shaft (13) and adjust it in a position that it is shown in the picture (slightly leant out). 12 18 m m 4.
Circuit layout 3 2 680 3 2 4.7.2 The actual electrical connection - Stick the clip (1) on wedge (defat the contact surface!). - Install the power supply cable (2) so that connector (3) is in the direction of a head. The other connector (connectors) is (are) connected into terminal box rack of the stop motor according to the pictographs that are situated on it. - Install the cable of control panel (4) and connect it to the terminal box of stop the motor according to the pictographs.
1 3 60mm 4.7.3 Fastening upper cover belt, position reader, control panel of stopmotor and thread stand - Screw the stop to the belt guard. - Assemble upper cover belt and hand wheel according to par.4.5. - Set the position reader (3) on the handwheel pin so as to match the stop groove of the position reader with the stop (thus immobilizing the position reader). - Fix the position reader by retightening the two hexagonal screws.
5. Basic setting of stopmotor and position reader 5.1 Generally The procedure of setting parameters of the stopmotor S359 600045 XXX - EFKA DC 1600/DA82GA on the level of the operator is described in the first part of the Instruction manual - par. 7.2.1.2 (V810); par. 7.2.2.2 (V820). A correct function of the sewing machine with drive is attained when changing some parameters of the drive, which are inaccessible for the attendance of the machine.
5.2.2 Changes of setting parameters of stopmotor setting considering original producer setting Parameter Parameter No value 111 116 170 171 192 202 225 180 30 340 120 3 Max. revolutions (according to a type of machine) Trimming revolutions Reference position First position of needle Delay angle of tensioner switch on Delay of start run after switch off the signal foot Type of the machine 5.3 Setting stopmotor S359 600052 XX-EFKA VD 552/6F82FA and S359 600056 XX-EFKA VD 554/6F82FA 5.3.
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