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Brother International LK3-B434E MKII Instruction Manual - English - Page 32

CORRECT USE, 7-1. Selecting the needle and thread, 7-2. Installing the needle

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7. CORRECT USE 7. CORRECT USE 7-1. Selecting the needle and thread Different needles and threads are used for different sewing applications. Refer to the table at right for details on which needle and thread to select. NOTE: For inner clamping device, use only the DP × 17 needle. Needle DP × 5 #14 DP × 17NY #19 Thread #80 - #50 #50 - #20 Main application Medium materials Heavy materials 7-2. Installing the needle CAUTION q q Turn off the power switch before installing the needle, otherwise the machine may operate of the foot switch is depressed by mistake and serious injury could result. w w Loosen the set screw q, insert the needle w as far as it will go so that the groove is facing toward you, and then tighten the set screw q. 7-3. Threading the upper thread CAUTION Turn off the power switch before threading the thread, otherwise the machine may operate if the foot switch is depressed by mistake and serious injury could result. Thread the upper thread correctly as shown in the illustration below. * If the tension release lever q is raised in the direction of the arrow, it will be easier to open the tension disc w and pull the thread 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

Section	Page
Go to Instruction Manual Top Page	1
SAFETY INSTRUCTIONS	2
CONTENTS	6
1. NAME OF EACH PART	7
2. SPECIFICATIONS	8
2-1. Specifications	8
2-2. Examples of sewing patterns	9
3. INSTALLATION	10
3-1. Power table	10
3-2. Installing the motor	11
3-3. Installing the motor pulley	11
3-4. Installing the control box	12
3-5. Installing the rubber cushions	13
3-6. Installing the oil pan	13
3-7. Installing the cushions	13
3-8. Installing the machine head	14
3-9. Installing the head rest	14
3-10. Installing the liquid cooling tank, optional	14
3-11. Installing the operation panel	15
3-12. Connecting the ground wire	15
3-13. Connecting the cords	16
3-14. Piping (for pneumatic)	18
3-14-1. Installing the air unit	19
3-14-2. Adjusting the speed controller	19
3-15. Installing the V-belt	20
3-16. Installing the belt cover	21
3-17. Installing the foot switch	21
3-18. Installing the motor cover	22
3-19. Installing the spool stand	22
3-20. Installing the needle sub plate	23
3-21. Installing the eye guard	24
4. LUBRICATION	25
4-1. Lubrication points	25
5. OPERATION	26
5-1. Name and function of each operation panel item	26
5-2. Operating procedure	28
5-2-1. Setting the program number	28
5-2-2. Setting the X-scale and Y-scale	28
5-2-3. Setting the sewing speed	28
5-3. Operating the foot switch	29
5-4. Operating the emergency stop switch	30
6. CHECKING THE SEWING PATTERN	31
7. CORRECT USE	32
7-1. Selecting the needle and thread	32
7-2. Installing the needle	32
7-3. Threading the upper thread	32
7-4. Winding the lower thread	33
7-5. Replacing the bobbin case and threading the thread	34
7-6. Sewing conditions and thread tension	34
7-6-1. Guide to maximum sewing speed	35
7-6-2. Lower thread tension	35
7-6-3. Upper thread tension	35
7-6-4. Thread take-up spring height	36
7-6-5. Thread take-up spring tension	36
7-6-6. Adjusting arm thread guide R	36
7-6-7. Thread take-up amount	36
8. SEWING	37
9. MAINTENANCE AND INSPECTION	38
9-1. Cleaning the rotary hook	38
9-2. Lubrication	39
9-3. Draining the oil	40
9-4. Cleaning the control box air inlet port	40
9-5. Cleaning the eye guard	40
9-6. Checking the needle	40
10. STANDARD ADJUSTMENTS	41
10-1. Adjusting the needle bar height	41
10-2. Adjusting the needle bar lift amount	41
10-3. Adjusting the driver needle guard	42
10-4. Adjusting the needle clearance	42
10-5. Adjusting the shuttle race thread guide	42
10-6. Adjusting the thread take-up amount	43
10-7. Adjusting the movable knife	43
10-7-1. Replacing the movable knife and fixed knife	44
10-7-2. Adjusting the engagement of the movable knife and fixed knife	45
10-8. Adjusting the work clamp lift amount	46
10-9. Work clamp interchangeability	47
10-10. Adjusting the needle up stop position	47
10-11. Adjusting the thread wiper	48
10-12. Checking the input sensor and DIP switch input	49
10-13. Checking the input voltage	50
10-14. Clearing all memory settings	50
10-15. Moving stitch patterns	51
10-16. Adjustment of air pressure (for pneumatic)	52
10-17. Adjustment of inner clamping device	52
11. USING THE COUNTERS	53
11-1. Using the bobbin thread counter	53
11-2. Using the production counter	53
12. CHANGING FUNCTIONS USING THE DIP SWITCHES	54
12-1. Operation panel DIP switches	54
12-2. DIP switches inside the control box	55
12-3. Using user programs	56
13. CHANGING SPECIAL FUNCTIONS USING THE MEMORY SWITCHES	58
13-1. Using the cycle sewing function	61
14. SETTING THE WORK CLAMP MODE	63
14-1. Setting solenoid work clamp mode	63
14-2. Setting pneumatic work clamp mode	63
14-3. Light work clamp	64
14-4. Setting reverse work clamp mode	65
15. TABLE OF ERROR CODES	66
16. GAUGE PARTS LIST ACCORDING TO SUBCLASSES	68
17. TROUBLESHOOTING	71
18. OPTIONAL PARTS	74