Instruction manual 524 Minerva Boskovice, a.s., Sokolská 60, CZ - 680 17 Boskovice Tel.: +420-516-453434, 453433, 494111 Fax: +420-516-452165 Edition : 01/2004 Printed: Czech Republic http://www.minerva-boskovice.
Contents - part A - Instruction manual: 1. Proper use of the machine .................................................................................................................................................. 1 2. Description of the machine ................................................................................................................................................. 1 3. Machine subclasses ..............................................................................................
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 is destined for sewing on under collars into neck openings of jackets, for sewing on top collars on falls of under collars, for sewing on lining collars into the top parts of trousers, for sewing on pocket facings on trouser bags, for overedging of edges and similar operations in making-up outerwear, for sewing materials of wool, cotton and materials with admixture of synthetic fibres and woven fabrics of 100 % polyamide fibres.
4.1.3 Optional equipment S791 S791 S791 S791 S794 S741 149001 151016 151017 947001 222012 610118 40 Attachment for serging operation Hinged foot with front thread slit - zig-zag stitch width 6 mm Hinged foot with front thread slit - zig-zag stitch width 10 mm Adjustment gauges Sewing lamp High mortality spare parts kit in a plastics box 4.2 -for the subclass - 105 4.2.
MAIN SWITCH 6. Operation of the machine Caution! Do not use this sewing machine without using the finger guard (C, Fig. 4) and without the take-up lever guard (P, Fig. 2). OFF ON 6.1 Upper thread threading (Fig. 1, 2) Caution! Before starting the threading operation, switch off the main switch and put off the feet from the pedals on the stand to avoid the starting of the machine by treading the pedal.
6.4 Adjustment of the upper thread tension (Fig. 1, 2, 5) Correct adjustment of the tension of both threads The tension of the upper and that of the bottom thread must be mutually adjusted in such a way, so that the stitch locking is being done in the middle of the sewn material (Fig. 5). The tension of the upper thread is to be adjusted by turning a bit the nut of the Incorrect adjustment tensioner (M, Fig. 2).
6.6 Adjustment of the stitch length, reverse stitching (Fig. 8, 9) The stitch length is changed in turning the knob (A), which is placed on the arm web, according to the numbers indicating the stitch length against the symbol (B) on the machine arm. In turning the knob in the direction of the arrows, the stitch length is increased (+) or reduced (-).
7. Machine maintenance Caution! Before cleaning and lubricating the machine switch off the main switch and put your your feet off the pedals on the stand to avoid starting the machine by treading the pedal. 7.1 Cleaning Maintain the machine clean and at least once a day (according to the processed material) remove dirt from the hook and feeder space by means of a brush, with the machines provided with a thread cutter, from the cutting space as well.
8. Electronic control of the machine (it is valid for sub-classes equipped with stop motor) 8.1 Control of sewing by means of control elements 8.1.1 Via treadle (treadle positions and function possibilities) (Fig. 14) The position of the treadle is read by the reader, which can recognise 16 levels. Its meaning is shown on the table and see Fig. 14.
8.2 Adjustment of automatic functions via control panel for stop motor 8.2.1 By using stop motor Efka with panel V 810 (Fig 16) Functioning pushbuttons engagement: Pushbutton P Pushbutton E Pushbutton + Pushbutton - Fig.
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. 8.2.1.2 Setting by means of parameters (Fig. 16) Drive memory contains the parameters which enables sewing system tuning. These parameters have exact meaning and they are divided into 3 levels.
ON/OFF thread trimmer: C D E F G H I No. of parameter Value range of parameter Description of parameters 013 ON/OFF Thread trimmer ON/OFF 8.2.2 By using stop motor Efka with panel V 820 J K LM N O PQ (Fig. 17) A B Fig.
8.2.2.1 Adjustment by means of buttons with fixed setting function (Fig. 17) Note: It is important to finish the seam in order to reach effective button pressing (press the treadle fully backwards down). Setting start bar: Drive enables sewing start bar automatically. It is necessary to choose the type (single, double, off) and number of stitches which will be sewn forwards and backwards. The arrow above its symbol shows the type of bar (chosen by gradually pressing pushbutton 1).
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 parameter’s number. No.
Operating instructions for eventual trouble shooting 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 Instructions for assembling, part B, par. 12.5.2. Trouble Cause Method of troubleshooting 1. Machine runs with difficulty. 1.1 Machine out of use for certain time, dried oil and dirt in bearings.
6.3 Needle too thin for thick material. 6.4 Needle incorrectly mounted. 6.5 Throat plate loosened. 6.6 Upper thread tension too high. 7. Difficult and uneven machine feeding. 7.1 Feeder too low. 7.2 Feeder used. 7.3 Feeder teeth fouled or blunt. 7.4 Insufficient presser foot pressure. Replace needle according to par. 6.3, part A. Mount correctly needle according to par. 6.3, part A. Mount throat plate according to par. 5, part C. Set tension according to par. 6.4, part A.
14. Low quality of stitch start on rear side. 14.1 Upper thread end too long. Increase tension of auxiliary tensioner according to par. 6.1, part A. Adjust time setting of cam according to 23, part C. 15. No upper or lower thread trimming. 15.1 Incorrect cam time setting. Set correctly cam according to par. 23, part C. Set up. 15.2 Skipped stitches with slow machine revolutions. 15.3 Incorrect thread division with trimming knife. 15.4 Low lifting of trimming knife. 16.
Contents - part B - The instructions for assembling: 1. Safety instructions ............................................................................................................................................................ 1 2. Method of delivering the machine ................................................................................................................................. 2.1 Complete head with accessories ............................................................................
Part B - Instructions for assembling 1. Safety instructions Caution! The assembly of the machine is to be done only by a trained mechanician. All operations connected with the electric installation of this sewing machine are to be done only by an authorized electromechanician. It is absolutely necessary to get acquainted with the instructions concerning the drive supplied by the manufacturer thereof. 2.
Motors are to be chosen according to the following table: Machine subclass Ordered number 101 S359 600030 88 S359 600030 75 S359 600030 58 105 ø of pulley mm Name FIR 1148 3 x 400/230 V, 50/60 Hz Machine rev. Approx. specification max.
3 7 2 13 6 8 70 200 Fig. 3 3 1 B 5 4 5 16 A Fig. 2 Fig.
3 x THREADED INLAY M8 SCREWED INTO HOLES ø 14; DEPTH 30 Fig.
5. Assembly and screwing on of the stand table top 5.1 Assembly of stand table top (Fig. 2, 3, 4, 5) Put the rubber inserts for placing the machine head into the stand table top into the recess (2 and 3, Fig. 5). For better fastening, we recomment to stick on the inserts. When mounting the tray (1, Fig. 2) be sure in maintaining the distance “X” on the whole perimeter of the tray between the interior of the tray and the perimeter of the stand table top recesss (2).
6. Mounting of a position reader and of a control panel of the stop motor (Fig. 7, 8) Put the position reader (2) on the pin of the hand wheel in such a way, so that the arresting groove of the reader is placed on the arresting stop (4) (in this way, the movement of the position reader body is avoided). Fasten the reader in tightening two screws with an inner hexagon. With the EFKA stop motor, mount the control panel V 810 (1) onto the upper guard using two screws (3) which are situated on the guard.
8. Mounting of the equipment for backward stitching (Fig. 11, 12) Remove the backward stitching lever and the knob for setting the stitch length. Mount the knob (1) and the shaft (2). Put on the lever (3) with the magnet (4) on the shaft (2) and fasten the magnet with screws (5) to the machine arm. Using the screw (6), fasten the lever (3) on the shaft (2). Connect the magnet conductor through the cutout in the table top into the outlet on the motor and head interconnecting cable. - see par. 12.4.
10. Composition and assembly of the thread stand (Fig. 15, 16) Assemble the thread stand and mount it into the hole in the plate so that its arms would be parallel to the longer edge of a table top. Each thread may be fed only through one hole in the thread stand arm. Fig. 15 Fig. 16 11. Preparation of the machine for sewing Inspect carefully the machine, clean and try it, if it turns easily and if it is correctly adjusted.
12. Instructions for putting the electronically controlled drive into operation When putting these drives into operation, observe the hints mentioned in the accompanying documentation of the manufacturer of this drive. The inobservance of these hints may cause damage of the drive or of the sewing machine head. Caution! The voltage in the mains must comply with the voltage given on the drive plate. Caution! The lighting transformer is not switched off by the main switch (EN 60204-3-1).
12.2 Power supply 3 x 400 V - five wire power distribution, power supply 3 x 230 V - four wire or five wire power distribution Circuit layout - Evropa Transformer for sewing area bulb Machine stand Machine head Circuit layout - Amerika Transformer for sewing area bulb Machine stand Machine head 12.
12.
Stop motor S359 600052 XX - EFKA VD 552/6F82FA Circuit layout 12
12.5 Stop motor setting S359 600045 XXX - EFKA DC 1600/DA82GA 12.5.
12.6.2 Changes in parameters of stop motor setting considering original producer setting Parameter No Parameter value 111 190 202 210 213 239 100 120 200 5 16 Max.
