Manuale d’uso / di manutenzione del prodotto LK3-B448E del fabbricante Brother
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Please read this manual before using the machine. Please keep this manual within easy reach for quick reference. ELECTRONIC LOCKSTITCH BUTTON SEWER WITH BUTTON FEEDER LK3-B448E / BA-16 INSTRUCTION MAN.
i LK3-B448E MARK II /BA-16 ............. This symbol ( ) indicates something that you should be careful of. The picture inside the triangle indicates the nature of the caution that must be taken. (For example, the symbol at left means “beware of injury”.
ii LK3-B448E MARK II /BA-16 Use the sewing machine in an area which is free from sources of strong electrical noise such as high- frequency welders. Sources of strong electrical noise may cause problems with correct operation. Any fluctuations in the power supply voltage should be within ± 10% of the rated voltage for the machine.
iii LK3-B448E MARK II /BA-16 This sewing machine should only be used by opera- tors who have received the necessary training in safe use beforehand. The sewing machine should not be used for any applications other than sewing. Be sure to wear protective goggles when using the machine.
iv LK3-B448E MARK II /BA-16 c Warning labels ★ The following warning labels appear on the sewing machine. Please follow the instructions on the labels at all times when using the machine. If the labels have been removed or are difficult to read, please contact your nearest Brother dealer.
CONTENTS 1. Name of each part ................................................................................................................. 1 2. Specifications .......................................................................................
8. Sewing ............................................................................................................................... .......... 33 9. Maintenance and inspection .....................................................................
1 1.Name of each part LK3-B448E MARK II /BA-16 1. Name of each part q Power switch w Control box e Operation panel r Foot switch t Motor y T ension release lever u Pulley i Spool stand o Thread take-u.
2 2. Specifications LK3-B448E MARK II /BA-16 2. Specifications 2-1. Specifications Maximum sewing speed Maximum pattern size Needle Dimensions of buttons that can be sewn Number of stitches Maximum st.
3 2. Specifications LK3-B448E MARK II /BA-16 2-2. Program list Sewing patterns are limited as shown in the table below . (Any program is available as long as the needle drops down in the hole of the button.) *3 1 2 3 4 5 6 7 23 8 9 24 25 26 10 11 12 13 27 14 28 15 29 No.
4 2. Specifications LK3-B448E MARK II /BA-16 22 *2*3 35 *2*3 16 17 30 18 19 31 45 20 32 33 21 34 46 47 48 49 No. of button holes 4 Sewing pattern No. of threads 6-5 8-7 10-9 6-6 8-8 10-10 12-12 6-6 8-8 10-10 6-6 10-10 6-6 10-10 6-6 8-8 10-10 12-12 No.
5 2. Specifications LK3-B448E MARK II /BA-16 *2 Do not use the button lifter spring. 36 37 38 39 40 41 42 43 44 No. of button holes 4 Sewing pattern No. of threads 6-6 8-8 10-10 12-12 6-6 8-8 10-10 6-6 10-10 No. of crossover stitches 0 0 0 0 0 0 0 0 0 No.
6 2. Specifications LK3-B448E MARK II /BA-16 This helps to prevent thread breakages caused by friction when using synthetic threads. Fill the tank with silicone oil (100 mm 2 /s). ■ T wo-pedal foot switch The switch has an independent presser switch (left side) and start switch (right side).
7 3. Installation LK3-B448E MARK II /BA-16 3. Installation • Use the power table which has been specially designed for the B448E. * If using a commercially-available table, process it as shown in the illus- tration below .
8 3. Installation LK3-B448E MARK II /BA-16 3-2. Installing the motor Install the motor u to the work table with the four accessory bolts q , cushions w , cushion collars e , flat washers r , spring washers t and nuts y . A t t h at t i m e , fix by setting bolts q a little to the right of oval hole on motor .
9 3. Installation LK3-B448E MARK II /BA-16 3-4. Installing the control box 1. Remove the 12 screws q , and then open the covers (panel mounting assembly w and main P .C. board mounting plate e ). NOTE: When opening the cover , hold it securely so that it does not fall down.
10 3. Installation LK3-B448E MARK II /BA-16 1. Place the washers q and cushions w into the two holes in the work table. * Adjust the height of the machine head to the button feeder by the number of the washers q . 2. After the height is decided, secure them with the nails e .
LK3-B448E MARK II /BA-16 11 3. Installation 3-7. Installing the machine head 1. Insert the two hinge assemblies q into the machine head so that they are parallel, and then secure them with the two set screw w . 2. Place the machine head gently on the table.
12 3. Installation LK3-B448E MARK II /BA-16 3-9. Installing the liquid cooling tank, optional 1. Install the vibration bowl q with bolts w , spring wash- ers e , and washers r . 2. Pass the wires from the vibration bowl q through the hole in the table.
LK3-B448E MARK II /BA-16 13 3. Installation 3-13. Installing the shooter 3-12. Installing the button feeder 1. Move button feeder base q to the front and rear and left and right as necessary to install it by using hole bolts w , spring washers e and washers r .
14 3. Installation LK3-B448E MARK II /BA-16 3-14. Connecting the cords 1. Gently tilt back the machine head. NOTE: After tilting back the machine head, do not push the face side or the pulley side from above. 2. Pass the cords q through the hole w in the work table.
LK3-B448E MARK II /BA-16 15 3. Installation ■ Button feeder connection Pull on the connector to make sure it will not come disconnected after connecting the pins. ■ Control box (for vibrating bowl) connection Connect the ground wire from the vibrating bowl to the motor .
LK3-B448E MARK II /BA-16 3. Installation 16 ■ Power switch connection 3-15. Installing the button feeder cover Attach the button feeder cover q to the button feeder w with screws e , spring washers r , and washers t . * Be sure to pass the wires through the hole in the cover when attaching the button feeder cover q .
LK3-B448E MARK II /BA-16 17 3. Installation 3-16. Installing the operation panel The operation panel can be installed to either the top or bottom of the work table.
LK3-B448E MARK II /BA-16 3. Installation 18 3-18. Installing the V -belt 1. Gently tilt back the machine head, and then place the V -belt q into the V grooves on the machine head pul- ley w and the motor pulley e . NOTE: After tilting back the machine head, do not p u s h the face plate side or the pulley side from above.
LK3-B448E MARK II /BA-16 19 3. Installation 3-19. Installing the belt cover 1. Insert the connector of the foot switch e into the connector w of the control box q .
LK3-B448E MARK II /BA-16 3. Installation 20 Attach all safety devices before using the sewing machine. If the machine is used without these devices attached, injury may result. CAUTION q e w q 3-21 . Installing the motor cover 1. Install the motor cover q to the motor back cover w with the screws e and the flat washers r .
LK3-B448E MARK II /BA-16 21 3. Installation 3-24. Adjustment by the accessory spring w e q t r If you would like the button to be raised up more after it is sewn, install the accessory spring. 1. Install the spring support q with the bolt w . 2. Install the spring e with the washer r and the screw t .
22 4. Lubrication LK3-B448E MARK 2 /BA-16 T urn of f the power switch before starting lubricating, otherwise the machine may operate if the foot switch is depressed by mistake, which could result in injury .
LK3-B448E MARK 2 /BA-16 23 4. Lubrication 4-2. Applying grease Do not apply too much grease in the place indicated by the arrow . If too much grease is applied here, the button clamp may not move up and down smoothly and error [E-6 ] may appear on the display .
LK3-B448E MARK II /BA-16 24 5. Operation 5 . Operation 5-1 . Name and function of each operation panel item SELECT PROGRAM NO. RESET COUNTER X - SCALE Y - SCALE SPEED P TEST BOBBIN.WIND P4 P3 P1 P2 POWER q w r e t y u i o !0 !1 !4 q POWER indicator ..
25 LK3-B448E MARK II /BA-16 5. Operation SELECT PROGRAM NO. RESET COUNTER X - SCALE Y - SCALE SPEED P TEST BOBBIN.WIND P4 P3 P1 P2 POWER y i o !0 !1 !4 !2 !3 i X-SCALE indicator ................. Illuminates when the SELECT switch y is pressed to shown the X-scale setting.
LK3-B448E MARK II /BA-16 26 5. Operation 5-2 . Operating procedure Program No. X-scale (%) Y-scale (%) Speed (rpm) Factory default 00 * 100 100 2000 Variable range 01 - 49 20 - 200 20 - 200 1,000 - 2,500 SELECT PROGRAM NO. COUNTER X - SCALE Y - SCALE SPEED P SELECT PROGRAM NO.
27 LK3-B448E MARK II /BA-16 5. Operation AUTO 1 AUTO 2 OFF BA-1 6 q w 5-3. Operating the button feeder 1. Button feeder switch q AUTO1 ... Buttons are supplied automatically after sewing is complete. A U T O 2 . . . When sewing is complete and the button clamp releases its button, the next button is supplied.
28 LK3-B448E MARK 2 /BA-16 6. Checking the sewing pattern 7. Depress the foot switch to the second step. Only the feed mechanism will move. The feed mechanism moves forward by one stitch each time the foot switch is depressed.
29 LK3-B448E MARK II /BA-16 7. Correct use 7. Correct use 7-1 . Selecting the needle and thread TQ × 1 #11 TQ × 1 #12 TQ × 1 #14 Thread #60 #50 Button hole diameter 1.
30 LK3-B448E MARK II /BA-16 7. Correct use Do not touch or place anything against any of the moving parts while winding the lower thread, otherwise personal injury or damage to the machine may result. 8. To wind more thread onto the bobbin, loosen the set screw t and pull the bob- bin presser q outward.
31 LK3-B448E MARK II /BA-16 7. Correct use T urn of f the power switch before removing and replacing the bobbin case, otherwise the machine may operate if the foot switch is depressed by mistake and serious injury could result.
32 LK3-B448E MARK II /BA-16 7. Correct use Become greater Become less q w w q e q Weaker Stronger 7-6-4. Thread take-up spring tension Loosen the set screw q and turn the tensioner body to adjust the thread take-up spring height. Turn the tension stud q with a screwdriver.
LK3-B448E MARK II /BA-16 8. Sewing 33 8. Sewing Before starting sewing... • Check that the needle bar is at its highest position. T urn the machine pulley so that the index mark q on the pulley is between the marks w on the belt cover .
34 9. Maintenance and inspection LK3-B448E MARK 2 /BA-16 9. Maintenance and inspection CAUTION Turn off the power switch before starting any cleaning work, otherwise the machine may operate if the foot switch is depressed by mistake, which could result in injury.
35 9. Maintenance and inspection LK3-B448E MARK 2 /BA-16 9-3. Cleaning the eye guard Wipe the eye guard clean with a soft cloth. NOTE: Do not use solvents such as kerosene or thinner to clean the eye guard. 9-4. Checking the needle Always check that the tip of the needle is not broken and also the needle is not bent before starting sewing.
36 10. Adjustments LK3-B448E MARK II /BA-16 Maintenance and inspection of the sewing machine should only be carried out by a quali- fied technician. Ask your Brother dealer or a qualified electrician to carry out any maintenance and inspection of the electrical system.
LK3-B448E MARK II /BA-16 37 10. Adjustments Adjust the needle bar lift amount as described below so that the tip of the rotary hook is aligned with the center of the needle when the machine pulley is .
38 10. Adjustments LK3-B448E MARK II /BA-16 0.01 - 0.08mm Tip Needle center line 10-3 . Adjusting the driver needle guard T urn the machine pulley to align the tip of the rotary hook with the needle center line. Then loosen the set screw w and turn the eccentric shaft e to adjust so that the driver needle guard q contacts the needle.
LK3-B448E MARK II /BA-16 39 10. Adjustments q q e w r q B A 10-6. Adjusting the thread take-up amount 10-7 . Adjusting the movable knife e w Thread take-up amount (stroke) Become less Become greater At the time of shipment from the factory , the thread take-up amount (stroke) of the thread take-up lever q is set to the standard setting of 5 mm.
40 10. Adjustments LK3-B448E MARK II /BA-16 4. Remove the movable knife i and replace it with a new one. At this time, check that the movable knife i and the fixed knife o cut the thread cleanly . If necessary , adjust by using the appropriate movable knife washer !0 (supplied as accessories).
LK3-B448E MARK II /BA-16 41 10. Adjustments A. After the movable knife and fixed knife are properly engaged, tighten the screw as shown in Fig.1. B. Turn the movable knife (in the direction of the arrow) while the screw is still tightened. C. Loosen the screw.
LK3-B448E MARK II /BA-16 10. Adjustment 42 10-9. Adjusting the holding pressure Loosen screw q and turn adjustment screw w so that clamp pressure is as light as possible but high enough so that the material will not slip when pulled lightly . * If the clamp pressure is too high, the buttons may not be fed properly .
43 10. Adjustment LK3-B448E MARK II /BA-16 10-1 1. Adjusting the button clamp height Adjustment 1. After turning on the power switch, turn AUTO 1 or AUTO 2 the feeder switch. 2. The button carrier will move slowly if the foot switch is turned on with the manual switch depressed.
LK3-B448E MARK II /BA-16 10. Adjustment 44 2 ± 0.5mm q w e (Approx. 30mm) Approx. 20mm r t 10-12. Adjusting the needle up stop position The needle up stop position is adjusted so that the index mark w on the machine pulley q is inside the mark r on the belt cover e .
45 10. Adjustment LK3-B448E MARK II /BA-16 10-14. Adjusting the vibrating bowl ● The vibrating bowl arranges all of the buttons face up and feeds the buttons to the shooter . ● Be sure to readjust the vibrating bowl whenever the buttons are changed.
LK3-B448E MARK II /BA-16 10. Adjustment 46 10-15. Adjustment for excess buttons in the button shooter 1. T urn the button carrier q by hand in the direction of the arrow , and remove any buttons from the button carrier pin w . 2. With the button carrier q in this position, pull lever e to remove any excess buttons from the shooter at point A.
47 10. Adjustment LK3-B448E MARK II /BA-16 10-16. Button replacement 10-16-1. Adjustment when the button diameter is changed ■ Slide base adjustment 1. Adjust the width of the slide base assembly w to the button width with slide base screw e so that the bottons q pass smoothly .
LK3-B448E MARK II /BA-16 10. Adjustment 48 10-16-2. Adjustment when the button thickness changes 1. Check to be sure that buttons q are being smoothly sent to the shooter w . If the buttons are not fed smoothly , replace the shooter . 2 . Install accessory spacers (0.
49 10. Adjustment LK3-B448E MARK II /BA-16 1. Turn on the power switch. 2. Check whether or not the feeder switch q is AUTO 1. 3. Press and hold manual switch w and turn the foot switch on. The machine will begin to operate. * At this time, the machine head will be prevented from operating, and error code "E-C3" will be displayed.
LK3-B448E MARK II /BA-16 10. Adjustment 50 10-16-6. Adjusting the needle location Adjustment is required whenever the button carrier is replaced. Make sure the needle is not bent. ■ Horizontal feed position 1. Set the X scale so that the holes A and B in the button are aligned with the point of the needle.
51 10. Adjustment LK3-B448E MARK II /BA-16 4. Gently tilt back the machine head, and then place the V-belt u remove the V grooves on the machine head pulley i and the motor pulley o . NOTE: After tilting back the machine head, do not push the face plate side or the pulley side from above.
LK3-B448E MARK II /BA-16 10. Adjustment 52 Fig.1 Motor V-belt Sewing machine NOTE: Use brother specified V -belt (belt, VM). The V -belt may stretch slightly when it is first used, so adjust the belt tension after about 3,000 cycles of use.
53 10. Adjustment LK3-B448E MARK II /BA-16 SELECT PROGRAM NO. RESET COUNTER X - SCALE Y - SCALE SPEED P TEST BOBBIN.WIND P4 P3 P1 P2 POWER 1. When the X-SCALE indicator q is illuminated and the RESET switch e is pressed while the TEST switch w is being pressed, the state of the X home position signal will appear on the display window r .
LK3-B448E MARK II /BA-16 10. Adjustment 54 SELECT PROGRAM NO. RESET COUNTER X - SCALE Y - SCALE SPEED P TEST BOBBIN.WIND P4 P3 P1 P2 POWER r et 200V 220V 230V 100V 380V 400V 415V Display [090 - 110] [100 - 120] [105 - 125] [100 - 120] Notes “ 100 ” is displayed when the input voltage is 200 V.
55 10. Adjustment LK3-B448E MARK II /BA-16 SELECT BOBBIN.WIND r e q y t o w u i 10-20. Moving stitch patterns • Programs which have already been programmed can be moved up, down and to the left and right. (However, such patterns will be reset if the power supply is turned off or the program number is changed.
LK3-B448E MARK II /BA-16 1 1. Using the counters 56 11. Using the counters 11-1 . Using the bobbin thread counter r ey t q r ey q u w t w 1. Press the SELECT switch q until the COUNTER in- dicator w illuminates. 2. While pressing the TEST switch e , press the RESET switch r .
57 12. Using user programs LK3-B448E MARK II /BA-16 SELECT PROGRAM NO. RESET COUNTER X - SCALE Y - SCALE SPEED P TEST BOBBIN.WIND P4 P3 P1 P2 POWER 12.Using user programs Recording a user program 12. Press the TEST switch w . This completes the recording.
LK3-B448E MARK II /BA-16 12. Using user programs 58 Clearing the user programs 2. Depress the foot switch to the second step. 3. Check the sewing pattern (see P.20), and then sew the pattern selected. 1. Switch the machine to recording mode by the procedure in steps 2.
59 13. Using the cycle sewing function LK3-B448E MARK II /BA-16 SELECT PROGRAM NO. RESET COUNTER X - SCALE Y - SCALE SPEED P TEST BOBBIN.WIND P4 P3 P1 P2 POWER B430E Series t !0 !1 e w !2 r y u i q 13.
LK3-B448E MARK II /BA-16 13. Using the cycle sewing function 60 1. When “c1-1” is flashing in the display window !0 , press the foot switch to the second step. 2. Start sewing. 3. “c1-1”, “c1-2”, “c1-3” are sewn in order for each article, and when the last-recorded pattern has been sewn, the display returns to “c1-1”.
61 14. Changing functions using the DIP switches LK3-B448E MARK II /BA-16 q DIPA-1 DIPA-2 DIPA-3 DIPA-4 DIPA-5 DIPA-6 DIPA-7 DIPA-8 Motion when set to ON See “12-2. Setting the presser mode” Presser does not automatically lift after sewing is completed.
LK3-B448E MARK II /BA-16 14. Changing functions using the DIP switches 62 W ait at least 5 minutes after turning of f the power switch and disconnecting the power cord from the wall outlet before opening the face plate of the control box. T ouching areas where high voltages are present can result in severe injury .
63 15. Changing special functions using the memory switches LK3-B448E MARK II /BA-16 memo-00 memo-01 memo-02 memo-03 memo-04 memo-05 memo-06 memo-07 memo-08 memo-09 memo-0A memo-0b memo-0c memo-0d memo-0E memo-0F Motion when set to ON At the end of sewing, the feed plate will be returned to the sewing start point via mechanical home position.
LK3-B448E MARK II /BA-16 15. Changing special functions using the memory switches 64 memo-11 - memo-13 memo-19 memo-1A memo-1b memo-14 memo-15 memo-16 memo-17 memo-18 memo-1F Motion when set to ON — Presser position errors are not detected. Needle up stop position errors are not detected.
65 16. T able of error codes LK3-B448E MARK II /BA-16 W ait at least 5 minutes after turning off the power switch and disconnecting the power cord from the wall outlet before opening the face plate of the control box. T ouching areas where high voltages are present can result in severe injury .
LK3-B448E MARK II /BA-16 16. T able of error codes 66 E-10 E-11 E-12 E-14 Cause Emergency stop switch was pressed. Emergency stop switch was pressed during sewing. Emergency stop switch is being continually pressed, or emergency switch connection error.
LK3-B448E MARK II /BA-16 67 17. Adjustment guide refer to this guide when different button are used When button diameter (D) changes Adjust button selector Adjust button guide Vibrating Bowl Shoot Coi.
LK3-B448E MARK II /BA-16 18. T roubleshooting 68 18. T roubleshooting Check Remedy Problem Cause Page Presser is contacting thread wiper. Thread wiper standby position Distance between button clamp and top of needle plate Button clamp lifter amount is too great.
69 18. T roubleshooting LK3-B448E MARK II /BA-16 Check Remedy Problem Cause Page Corners of needle hole plate or bobbin case are damaged. Damage Lower thread tension Lower thread tension is too strong. File smooth or replace the affected part. Adjust the lower thread tension.
LK3-B448E MARK II /BA-16 18. T roubleshooting 70 Shuttle race thread guide position Fixed knife blade Shuttle race thread guide position Needle bar lift amount Skipped stitches at sewing end Needle bar lift amount Thread takeup spring tension and height Check Remedy Problem Cause Movable knife does not pick up the thread.
INSTRUCTION MANUAL Printed in Japan 151-916 S93V48-002 2000.06. H (1) BROTHER INDUSTRIES, LTD. 15-1, Naeshiro-cho, Mizuho-ku, Nagoya 467-8561, Japan. Phone: 81-52-824-2177.
Un punto importante, dopo l’acquisto del dispositivo (o anche prima di acquisto) è quello di leggere il manuale. Dobbiamo farlo per diversi motivi semplici:
Se non hai ancora comprato il Brother LK3-B448E è un buon momento per familiarizzare con i dati di base del prodotto. Prime consultare le pagine iniziali del manuale d’uso, che si trova al di sopra. Dovresti trovare lì i dati tecnici più importanti del Brother LK3-B448E - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso Brother LK3-B448E imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul Brother LK3-B448E ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il Brother LK3-B448E, ma non hai ancora letto il manuale d’uso, dovresti farlo per le ragioni sopra descritte. Saprai quindi se hai correttamente usato le funzioni disponibili, e se hai commesso errori che possono ridurre la durata di vita del Brother LK3-B448E.
Tuttavia, uno dei ruoli più importanti per l’utente svolti dal manuale d’uso è quello di aiutare a risolvere i problemi con il Brother LK3-B448E. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo Brother LK3-B448E insieme con le istruzioni su come risolverli. Anche se non si riesci a risolvere il problema, il manuale d’uso ti mostrerà il percorso di ulteriori procedimenti – il contatto con il centro servizio clienti o il servizio più vicino.
