Brother International LK3-B434E MKII Instruction Manual - English
Brother International LK3-B434E MKII Manual
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- Brother International LK3-B434E MKII | Instruction Manual - English - Page 1
LK3-B434E INSTRUCTION MANUAL Please read this manual before using the machine. Please keep this manual within easy reach for quick reference. ELECTRONIC LOCKSTITCH PATTERN TACKER - Brother International LK3-B434E MKII | Instruction Manual - English - Page 2
you very much for buying a BROTHER sewing machine. Before using your new machine, please read the safety instructions below and the explanations given in the instruction manual. With industrial sewing machines, it the symbol at left means "you must make the ground connection".) LK3-B434E Mark II i - Brother International LK3-B434E MKII | Instruction Manual - English - Page 3
the wall outlet. Lightning may cause problems with correct operation. Installation Machine installation should only be carried out by a qualified technician. Contact your Brother dealer or a qualified electrician for any diarrhoea. Keep the oil out of the reach of children. ii LK3-B434E Mark II - Brother International LK3-B434E MKII | Instruction Manual - English - Page 4
to the machine. Use only the proper replacement parts as specified by Brother. If any safety devices have been removed, be absolutely sure to re Any problems in machine operation which result from unauthorized modifications to the machine will not be covered by the warranty. LK3-B434E Mark II - Brother International LK3-B434E MKII | Instruction Manual - English - Page 5
connection is not secure, you run a high risk of receiving a serious electric shock, and problems with correct operation may also occur. 4 Direction of operation 4 Thread take-up cover Belt cover 2 Thread take-up solenoid cover Eye guard Finger guard Motor cover 3 1 iv LK3-B434E Mark II - Brother International LK3-B434E MKII | Instruction Manual - English - Page 6
36 10-4. Adjusting the needle clearance .......... 36 10-5. Adjusting the shuttle race thread guide 36 10-6. Adjusting the thread take-up amount .... 37 10-7. Adjusting the movable knife .GAUGE PARTS LIST ACCORDING TO SUBCLASSES 62 17.TROUBLESHOOTING 65 18.OPTIONAL PARTS 68 LK3-B434E Mark II - Brother International LK3-B434E MKII | Instruction Manual - English - Page 7
r Foot switch t Motor y Tension release lever u EMERGENCY STOP switch i Pulley o Spool stand !0 Thread take-up lever !1 Wiper solenoid cover !2 t !6 q w r [LK3-B434E Mark II/Pneumatic specifications] Safety devices; !2 Finger guard !3 Eye guard !4 Thread take-up cover !5 Belt cover !6 Motor cover - Brother International LK3-B434E MKII | Instruction Manual - English - Page 8
2. SPECIFICATIONS 2. SPECIFICATIONS 2-1. Specifications BROTHER INDUSTRIES, LTD. LK3-B434EX-3 MADE IN JAPAN 1 Medium materials 2 Heavy materials Stitch formation create your original pattern using the BAS-PC/300. Consult with your local Brother Sales Office for details. LK3-B434E Mark II 2 - Brother International LK3-B434E MKII | Instruction Manual - English - Page 9
2. SPECIFICATIONS 2-2. Examples of sewing patterns The following are examples of possible patterns with the LK3-B434E Mark II. Sewing patterns Uses Number of stitches Decorative tacking 42 Triangular chain tacking 98 Rectangular decorative tacking 28 Sewing patterns Uses Number of stitches - Brother International LK3-B434E MKII | Instruction Manual - English - Page 10
carried out by a qualified technician. Contact your Brother dealer or a qualified electrician for any electrical work not secure, you run the risk of receiving a serious electric shock, and problems with correct operation may also occur. Install the belt covers to the machine 5 LK3-B434E Mark II 4 - Brother International LK3-B434E MKII | Instruction Manual - English - Page 11
center of the V groove in the motor pulley q is aligned as closely as possible with the center of the belt hole in the power table. 5 LK3-B434E Mark II - Brother International LK3-B434E MKII | Instruction Manual - English - Page 12
q. 4. Install the power switch !0 with the two screws !1. 5. Secure the power switch cord with the three staples !.2 6. Pass the motor cord through the cord hole !.3 LK3-B434E Mark II 6 - Brother International LK3-B434E MKII | Instruction Manual - English - Page 13
in the work table so that the notches are aligned with the tabs in the oil pan, and secure them in place with the nails w. 7 LK3-B434E Mark II - Brother International LK3-B434E MKII | Instruction Manual - English - Page 14
hole. 3-10. Installing the liquid cooling tank, optional w q 1. Remove the rubber plug, and then push the liquid cooling tank q. 2. Tighten it with the set screw w. LK3-B434E Mark II 8 - Brother International LK3-B434E MKII | Instruction Manual - English - Page 15
not secure, you run the risk of receiving a serious electric shock, and problems with correct operation may also occur. Red White Black Yellow/Green Connect to the power switch. However, the black wire is insulated to the inside of the box and is not used. Connect to ground 9 LK3-B434E Mark II - Brother International LK3-B434E MKII | Instruction Manual - English - Page 16
arrow, and secure it by tightening the screws t. NOTE: Check that the cords do not get pulled when the machine head is tilted back gently. LK3-B434E Mark II 10 - Brother International LK3-B434E MKII | Instruction Manual - English - Page 17
data, use the BAS-PC/300 electronic pattern sewer/reader (sold separately). 12. Tighten the cover (main P.C. board mounting plate r) with the six screws e. 11 LK3-B434E Mark II - Brother International LK3-B434E MKII | Instruction Manual - English - Page 18
the fastening band. * Light work clamp mode can be used by changing over the air tube connections. (Refer to "14. Setting the work clamp mode".) LK3-B434E Mark II 12 - Brother International LK3-B434E MKII | Instruction Manual - English - Page 19
becomes slower than that of the reverse work clamp. Next, adjust the control knobs so that the reverse work clamp operates more quickly. (Valve 3) 13 LK3-B434E Mark II - Brother International LK3-B434E MKII | Instruction Manual - English - Page 20
assembly. NOTE: Use brother specified V-belt (belt, problems; • Noise & vibration become large. • Needle up stop position becomes unstable. • Error message [E-50] is displayed. Check that the motor is positioned so that the Vbelt is straight. (Fig.1) V-belt Sewing machine Motor Fig.1 LK3-B434E - Brother International LK3-B434E MKII | Instruction Manual - English - Page 21
and rubber plug !.5 * Note that the spring !6 will come out when the screw !4 is removed. 2. Turn foot switch support plate B !3 back to front, and then install it with the bolt !,7 spring washer !8 and flat washer !9 as shown to "Setting the work clamp mode" on page 57. 15 LK3-B434E Mark II - Brother International LK3-B434E MKII | Instruction Manual - English - Page 22
between the motor pulley t and the motor cover q is uniform. u t y 3-19. Installing the spool stand q Assemble the spool stand q while referring to the spool stand instruction manual, and then install the spool stand q at the right side of the work table. LK3-B434E Mark II 16 - Brother International LK3-B434E MKII | Instruction Manual - English - Page 23
the height of the needle sub plate e so that it is at the same height as the needle plate y. !0 i o u o 5. Provisionally secure the two auxiliary plate supports u with the washers i and the screws o and !,0 and then firmly tighten the screws o and !0 in that order. i !0 17 LK3-B434E Mark II - Brother International LK3-B434E MKII | Instruction Manual - English - Page 24
3-21. Installing the eye guard CAUTION Attach all safety devices before using the sewing machine. If the machine is used without these devices attached, injury may result. 3. INSTALLATION Install the eye guard assy w to the face plate q with the two screws e. q w e LK3-B434E Mark II 18 - Brother International LK3-B434E MKII | Instruction Manual - English - Page 25
more oil on the felt of the shuttle race base, problems with sewing may result, so add oil to the felt until it is slightly soaked. NOTE 4: Use only specified Brother oil (Nisseki Sewing Libe 10) for the machine oil liquid cooling tank w, fill it with silicon oil (100 mm2/s). 19 LK3-B434E Mark II - Brother International LK3-B434E MKII | Instruction Manual - English - Page 26
. indicator u →X-SCALE indicator i →Y-SCALE indicator o →SPEED indicator !0 →COUNTER indicator !1 u PROGRAM NO. indicator ..... Illuminates when the SELECT switch y is pressed to shown the program number setting. LK3-B434E Mark II 20 - Brother International LK3-B434E MKII | Instruction Manual - English - Page 27
to set and select user programs. !4 Display window This display window will indicate the current statu for the selected menu, error or memory switch. 21 LK3-B434E Mark II - Brother International LK3-B434E MKII | Instruction Manual - English - Page 28
work clamp. * The needle racking width for backtack stitches (with stitch widths of 1 mm or less) is not enlarged or reduced. If this results in problems, set memo-0d to "ON". !2 LK3-B434E Mark II 22 - Brother International LK3-B434E MKII | Instruction Manual - English - Page 29
set to a variety of different patterns. (Refer to "14. SETTING THE WORK CLAMP MODE". When the start switch (right side) is depressed, sewing starts. 23 LK3-B434E Mark II - Brother International LK3-B434E MKII | Instruction Manual - English - Page 30
work clamp to stop. 5. Once the work clamp has returned to the desired position, depress the foot switch. The sewing machine will then resume sewing. LK3-B434E Mark II 24 - Brother International LK3-B434E MKII | Instruction Manual - English - Page 31
8 to ON. When DIP switch 7 is ON ... The sewing pattern cannot be enlarged. When DIP switch 8 is ON ... The program number cannot be changed. 25 LK3-B434E Mark II - Brother International LK3-B434E MKII | Instruction Manual - English - Page 32
through. [Two holes] Spun rayon yarn [One hole] 9 q 11 10 Synthetic thread 9 10 11 w [When using the liquid cooling tank] 9 11 10 Approx. 40 mm LK3-B434E Mark II 26 - Brother International LK3-B434E MKII | Instruction Manual - English - Page 33
winder thead tension stud w counterclockwise. 8. To wind more thread onto the bobbin, loosen the set screw t and pull the bobbin presser q outward. t q w Case A q Case B 27 LK3-B434E Mark II - Brother International LK3-B434E MKII | Instruction Manual - English - Page 34
equivalent 1.2 - 1.6 Large hook ← ← 1.4 - 1.8 0.2 - 0.3 ← 6 - 8 ← 0.4 - 0.6 ← 0.3 - 0.5 ← DP × 17NY #19 ← The sewing conditions given in the above table may need to be changed depending on the article being sewn. LK3-B434E Mark II 28 - Brother International LK3-B434E MKII | Instruction Manual - English - Page 35
7. CORRECT USE 7-6-1. Guide to maximum sewing speed Use 8 layers of denim 12 layers of denim Max. sewing speed (rpm) 2,500 2,300 NOTE: The the remaining length of upper thread to 35 - 40 mm, when the thread take-up lever is not used. Stronger Weaker q 29 LK3-B434E Mark II - Brother International LK3-B434E MKII | Instruction Manual - English - Page 36
adjust the thread take-up spring height. 7-6-6. Adjusting arm thread guide R Become greater Become less q w The standard position of arm thread guide Rq is the position where the screw w is in the center * To increase the thread take-up amount, move the stopper w downward. LK3-B434E Mark II 30 - Brother International LK3-B434E MKII | Instruction Manual - English - Page 37
sewing is completed and the thread has been trimmed, feed will move automatically to the next starting point and the work clamp e will rise. 31 LK3-B434E Mark II - Brother International LK3-B434E MKII | Instruction Manual - English - Page 38
shuttle race body w and the shuttle hook e. e w q 3. Clean all the dust and thread ends from around the driver r, the top of the rotary hook thread guide and the shuttle race. r LK3-B434E Mark II 32 - Brother International LK3-B434E MKII | Instruction Manual - English - Page 39
oil on the felt of the shuttle race base, problems with sewing may result, so add oil to the felt until it is slightly soaked. Use only specified Brother oil (Nisseki Sewing Libe 10) for the machine oil using the liquid cooling tank w, fill it with silicon oil (100 mm2/s). w 33 LK3-B434E Mark II - Brother International LK3-B434E MKII | Instruction Manual - English - Page 40
guard. 9-6. Checking the needle Always check that the tip of the needle is not broken and also the needle is not bent before starting sewing. LK3-B434E Mark II 34 - Brother International LK3-B434E MKII | Instruction Manual - English - Page 41
technician. Ask your Brother dealer or a qualified support e, place it as shown in the illustration so as not to clamp the felt t, and then gently press the felt t and the wick y until they are at the same height as the rotary hook race. * Return the support w to its original position. 35 LK3-B434E - Brother International LK3-B434E MKII | Instruction Manual - English - Page 42
race thread guide q by pushing it in the direction of the arrow so that the needle groove is aligned with the center of the needle plate hole. NOTE: If the shuttle race thread guide is in the wrong position, thread breakages, soiled thread or catching of the thread may occur. LK3-B434E Mark II - Brother International LK3-B434E MKII | Instruction Manual - English - Page 43
sewing machine is in the stopped position and the movable knife q is pushed to the machine pulley side so that there is no play. 37 LK3-B434E Mark II - Brother International LK3-B434E MKII | Instruction Manual - English - Page 44
0.5 mm from the needle hole plate !.2 6. Place the thread trimming connecting rod y onto the connecting rod lever pin u, and then install to the needle plate t. LK3-B434E Mark II 38 - Brother International LK3-B434E MKII | Instruction Manual - English - Page 45
the arrow) while the screw is still loosened. Repeat above steps A, B, C and D four or five times to maintain the cutting performance of the knife. 39 LK3-B434E Mark II - Brother International LK3-B434E MKII | Instruction Manual - English - Page 46
grease to the sliding part of the work clamp q (grease is already applied at the time of shipment), and check that the movement becomes easier. LK3-B434E Mark II 40 - Brother International LK3-B434E MKII | Instruction Manual - English - Page 47
w B The BAS-311E work clamp can also be used with the B434E Mark ll. Replace the feed bar guide cover q with the feed bar guide cover assembly, LL w (optional). Then, change the installation position for mark w to the correct position and then start the sewing machine. 41 LK3-B434E Mark II - Brother International LK3-B434E MKII | Instruction Manual - English - Page 48
sewing machine stops. 2. Loosen the screw r and move the thread guide connecting plate t up or down so that the thread wiper is we r Approx. 30 mm 1. Loosen the set screw w and move the wiper arm support e up or down to adjust so that the clearance between the top of the thread LK3-B434E Mark II 42 - Brother International LK3-B434E MKII | Instruction Manual - English - Page 49
normally always turn off the power when changing DIP switch settings. 3. Press the TEST switch w again to return the display to the normal condition. 43 LK3-B434E Mark II - Brother International LK3-B434E MKII | Instruction Manual - English - Page 50
all of the memory setting. NOTE: This operation causes memory switches to be returned to their initial settings, and user program setting to be cleared. LK3-B434E Mark II 44 - Brother International LK3-B434E MKII | Instruction Manual - English - Page 51
to a desired position, carry out steps 2. to 6. above while the display window y is flashing. The stitch pattern will not be moved at this time. 45 LK3-B434E Mark II - Brother International LK3-B434E MKII | Instruction Manual - English - Page 52
pull out the ad- justing bolt r so that the presser crank w can be horizontal when the reversal cylinder plunger q is moved to the left extreme. e w r LK3-B434E Mark II 46 - Brother International LK3-B434E MKII | Instruction Manual - English - Page 53
machine will start sewing. 4. If you press the TEST switch e or the SELECT switch q, the display will return to showing the bobbin thread counter. 47 LK3-B434E Mark II - Brother International LK3-B434E MKII | Instruction Manual - English - Page 54
, be sure to carry out the auto-clear operation by referring to page 44.) Enlargement of pattern size is not available. Program number is fixed. LK3-B434E Mark II 48 - Brother International LK3-B434E MKII | Instruction Manual - English - Page 55
a result, the thread take-up will rise slightly at the sewing start, and this may result in the thread pulling out under certain coditions. 49 LK3-B434E Mark II - Brother International LK3-B434E MKII | Instruction Manual - English - Page 56
the recording. * The menu indicators (e to i) will all illuminate and "p1" will appear in the display to indicate that user program No.1 is currently selected. LK3-B434E Mark II 50 - Brother International LK3-B434E MKII | Instruction Manual - English - Page 57
data in user program P2, the contents of P3 will be transferred to P2, and the contents of P4 will be transferred to P3. 51 LK3-B434E Mark II - Brother International LK3-B434E MKII | Instruction Manual - English - Page 58
). -- -- *1 ON for solenoid/heavy material specifications, and "--" for solenoid/medium material specifications *2 ON when the inner clamping device is being used, and "--" at other times LK3-B434E Mark II 52 - Brother International LK3-B434E MKII | Instruction Manual - English - Page 59
values changed using the operation panel are ignored. The lower thread sensor operates. (The lower thread sensor is a specialorder option.) - Initial value Solenoid Pneumatic -- -- -- -- -- -- -- -- -- -- -- -- 53 LK3-B434E Mark II - Brother International LK3-B434E MKII | Instruction Manual - English - Page 60
start position. 0: Across inside of work clamp 1: Top-left 2: Bottom-left - 3: Bottom-right 1 Specification with inner clamping device (Does not pass across inside of clamp) - -- LK3-B434E Mark II 54 - Brother International LK3-B434E MKII | Instruction Manual - English - Page 61
indicators (r to i) will all illuminate and "c1-1" will appear in the display window !0 to indicate that the cycle sewing program No.1 is currently selected. 55 LK3-B434E Mark II - Brother International LK3-B434E MKII | Instruction Manual - English - Page 62
be cleared. NOTE: If you clear a user program after any cycle sewing programs have been recorded, all recorded cycle sewing programs will also be cleared. LK3-B434E Mark II 56 - Brother International LK3-B434E MKII | Instruction Manual - English - Page 63
. • When DIP switch A-1 is at ON, the pressers are not raised automatically at the sewing end. • DIP switch A-2 is ignored except when memo-42 = 8. 57 LK3-B434E Mark II - Brother International LK3-B434E MKII | Instruction Manual - English - Page 64
light work clamp mode Branch: 2A Plug: 1A 2B 2A 1B 2A Both pressers lower, but only right presser lowers in light work clamp mode LK3-B434E Mark II 58 - Brother International LK3-B434E MKII | Instruction Manual - English - Page 65
the sewing end position (release the air and move the work clamp by hand) to check that the work clamps do not touch the needle. LK3-B434E Mark II - Brother International LK3-B434E MKII | Instruction Manual - English - Page 66
the remedy procedure to eliminate the cause of the problem. Code Cause E-10 Emergency stop switch was Troubleshooting". Turn off the power and check the connection of presser sensor connector P1. Turn off the power, and then check if the cooling fan is blocked with scraps of thread. LK3-B434E - Brother International LK3-B434E MKII | Instruction Manual - English - Page 67
operating (malfunction of power supply circuit board). Turn off the power and contact a qualified service technician. Bad connection in cable between power Turn off the power and check if connectors LED alphabet Panel display Text display A b c d E F 6 H L o 61 LK3-B434E Mark II - Brother International LK3-B434E MKII | Instruction Manual - English - Page 68
each specification. (In the following table, parts marked with 5 are common with the LK3-B430E; parts with ✩ are common with the BAS-311E.) Specification Part name Medium materials 5 104525-001 S06548-001 C Spring 5 145519-001 5 144588-001 B 5 145519-001 5 144588-001 B LK3-B434E Mark II 62 - Brother International LK3-B434E MKII | Instruction Manual - English - Page 69
16. GAUGE PARTS LIST ACCORDING TO SUBCLASSES Specification Part name Thread guide, needle bar Medium materials 5 S41222-101 B A B Needle assy 5 107415-414 Heavy materials With inner clamping device 5 5 8 37 S27838-001 (895) 13 51 8 37 4 18 156087-001 (M) 34 20 63 LK3-B434E Mark II - Brother International LK3-B434E MKII | Instruction Manual - English - Page 70
φ2.6 φ4 φ10 φ2.6 φ3.4 3 3 3 3 2.8 3 For heavy materials φ2.6 F S10213-001 FD S30926-001 FM S49980-001 H S30450-001 L S25127-001 M S34348-001 φ2.2 3 3 S40217-001 φ10 φ2.2 φ2.2 3 3 For medium materials φ2.6 φ4.7 φ6.5 φ3.3 φ4 4.8 2.8 2.8 φ6 φ3 2.8 LK3-B434E Mark II 64 - Brother International LK3-B434E MKII | Instruction Manual - English - Page 71
TROUBLESHOOTING 17. TROUBLESHOOTING Problem Cause Check Remedy Page Work clamp does not rise. Work clamp operation is sluggish. Work clamp lift amount is too great. Too much friction between presser plate and presser arm lever support the thread take-up lever stroke. 37 65 LK3-B434E Mark II - Brother International LK3-B434E MKII | Instruction Manual - English - Page 72
Problem Cause Check 17. TROUBLESHOOTING Remedy Page Upper thread breaks. Upper thread tension is too strong. Upper thread tension Needle is installed incorrectly. 36 Adjust the needle bar lift amount. 35 Replace the needle. Use the correct needle for the material. LK3-B434E Mark II 66 - Brother International LK3-B434E MKII | Instruction Manual - English - Page 73
17. TROUBLESHOOTING Problem Cause Check Remedy Page Upper thread Sharpen or replace the fixed knife. Adjust the position of the shuttle race 36 thread guide. Adjust the needle bar lift amount. 35 Refer to "Skipped stitches occur". Adjust 46 clamping device operates. 67 LK3-B434E Mark II - Brother International LK3-B434E MKII | Instruction Manual - English - Page 74
foot switch The switch has an independent left work clamp switch (left (For pneumatic) side), right work clamp switch (center) and start switch (right side). LK3-B434E Mark II 68 - Brother International LK3-B434E MKII | Instruction Manual - English - Page 75
INSTRUCTION MANUAL BROTHER INDUSTRIES, LTD. 15-1, Naeshiro-cho, Mizuho-ku, Nagoya 467-8561, Japan. Phone: 81-52-824-2177 Printed in Japan 118-V34 S91V34-002 2000.06. B (1)
INSTRUCTION MANUAL
Please read this manual before using the machine.
Please keep this manual within easy reach for quick reference.
ELECTRONIC LOCKSTITCH PATTERN TACKER
LK3-B434E