Juki LH-3500A Manual de Usario

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INSTRUCTION MANUAL
LH-3500A Series
i
CONTENTS
1. SPECIFICATIONS 1
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2. NAME OF EACH COMPONENT 3
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3. INSTALLATION 4
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3-1. Caution at the time of set-up 4
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3-2. Installation of the sewing machine 5
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3-3. Adjusting the height of the knee lifter 6
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3-4. Installation of thread stand 6
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4. PREPARATION OF THE SEWING MACHINE 7
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4-1. Method of lubrication 7
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4-2. Lubrication to the oil tank 8
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4-3. Draining of oil from the oil tank 9
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4-4. Adjusting the amount of oil in the hook 9
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4-5. Oil in the feed box 10
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4-6. Applying grease ...................................................................................................................................................
11
4-7. Setting up the SC-920 16
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4-8. Installing the belt cover (For LH-3528A, 3568A, 3578A and 3588A) 20
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4-9. Attaching the needles 20
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4-10. How to take out the bobbin case 21
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4-11. Inserting a bobbin in a bobbin case 21
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4-12. Threading the machine head 22
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4-13. Thread tension 25
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4-14. Winding the bobbin thread 26
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4-15. Thread take-up spring 27
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4-16. Adjusting the stitch length 29
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4-17. Needle-to-hook relation 29
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4-18. Pedal pressure and pedal stroke...................................................................................................................... 31
4-19. Adjustment of the pedal 31
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5. OPERATION OF THE SEWING MACHINE 32
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5-1. Pedal Operation 32
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5-2. Hand lifter 32
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5-3. Adjusting the pressure of the presser foot 33
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5-4. Micro-lifter 33
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5-5. Thread tension release changeover when using the knee lifter 34
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5-6. One-touch manual reverse feed (One-touch reverse feed type) 34
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6. MAINTENANCE 35
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6-1. Procedure of changing over between bottom feed and needle feed and the adjustment (for LH-3528A
only) 35
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6-2. Changing the feed timing 37
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6-3. Adjusting the thread trimming cam 38
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6-4. Adjusting the hook needle guard 39
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6-5. Adjusting the inner hook guide 39
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6-6. Adjusting the height and the inclination of the feed dog 40
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6-7. Replacing the gauge 41
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6-8. Adjusting the thread presser spring 41
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6-9. Adjusting the position of the moving knife 42
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6-10. Adjusting the counter knife position and the knife pressure 43
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6-11. Position of the wiper 44
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6-12. Caution when installing the attachments 44
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6-13. Replacing the bobbin thread slack preventer spring (For LH-3568A, 3568A-7, 3588A and 3588A-7) 45
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6-14. Stop of the needle bars and angle of corners for corners stitching (For LH-3568A, 3568A-7, 3588A and
3588A-7) 45
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7. STITCH-TO-ANGLE TABLE BY GAUGE (PITCH AND mm CONVERSION TABLE) 46
..
8. GAUGE SETS 47
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9. TROUBLES AND CORRECTIVE MEASURES 56
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10. MOTOR PULLEY AND BELT 58
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– 1 –
1. SPECIFICATIONS
Model name LH-3528A LH-3528A-7
(with automatic thread trimmer)
Application For light -, medium - and heavy - weight materials
S type : standard, F type : foundation, A type : light-weight materials, G type : jeans
Hook Standard hook Standard hook
Thread trimmer Not provided Provided
Separately
driven needle bar
mechanism
Not provided Not provided
Max. sewing speed
3,000 sti/min
Needle * 1 GROZ-BECKERT 134 Nm9 to Nm16 (For S, F and A types), 134 Nm16 to Nm23 (G type)
ORGAN needle DP x 5 #9 to #16 (For S, F and A types), DP x 5 #16 to #23 (G type)
Gauge size 3/32" to 1-1/2" 1/8" to 1-1/4"
2.4 to 38.1 mm 3.2 to 31.8 mm
Lift of presser foot 13 mm by knee lifter, 7 mm by hand lifter lever
Lubrication JUKI NEW DEFRIX OIL No. 1 or JUKI MACHINE OIL #7
Noise
Declaration
- Equivalent continuous emission sound
pressure level (LpA) at the workstation :
A-weighted value of 87.5 dB ; (Includes
KpA = 2.5 dB) ; according to ISO 10821-
C.6.2 -ISO 11204 GR2 at 3,000 sti/min.
- Sound power level (LWA) :
A-weighted value of 91.5 dB ; (Includes
KpA = 2.5 dB) ; according to ISO 10821-
C.6.2 -ISO 3744 GR2 at 3,000 sti/min.
Declaration
- Equivalent continuous emission sound
pressure level (LpA) at the workstation :
A-weighted value of 85.5 dB ; (Includes
KpA = 2.5 dB) ; according to ISO 10821-
C.6.2 -ISO 11204 GR2 at 3,000 sti/min.
- Sound power level (LWA) :
A-weighted value of 90.5 dB ; (Includes
KpA = 2.5 dB) ; according to ISO 10821-
C.6.2 -ISO 3744 GR2 at 3,000 sti/min.
Model name LH-3568A
(with incorporating corner stitching)
LH-3568A-7
(with automatic thread trimmer incorporating
corner stitching)
Application For light -, medium - and heavy - weight materials
S type : standard, G type : jeans
Hook Standard hook Standard hook
Thread trimmer Not provided Provided
Separately
driven needle bar
mechanism
Provided Provided
Max. sewing speed
3,000 sti/min
Needle * 1 GROZ-BECKERT 134 Nm9 to Nm16 (S type), 134 Nm16 to Nm23 (G type)
ORGAN needle DP x 5 #9 to #16 (S type), DP x 5 #16 to #23 (G type)
Gauge size 1/8" to 3/4"
3.2 to 19.1 mm
Lift of presser foot 13 mm by knee lifter, 7 mm by hand lifter lever
Lubrication JUKI NEW DEFRIX OIL No. 1 or JUKI MACHINE OIL #7
Noise
Declaration
- Equivalent continuous emission sound
pressure level (LpA) at the workstation :
A-weighted value of 83.5 dB ; (Includes
KPA = 2.5 dBA) ; according to ISO 10821-
C.6.2 -ISO 11204 GR2 at 3,000 sti/min.
- Sound power level (LWA) :
A-weighted value of 87.5 dB ; (Includes
KpA = 2.5 dBA) ; according to ISO 10821-
C.6.2 -ISO 3744 GR2 at 3,000 sti/min.
Declaration
- Equivalent continuous emission sound
pressure level (LpA) at the workstation :
A-weighted value of 84 dBA ; (Includes
KPA = 2.5 dB) ; according to ISO 10821-
C.6.2 -ISO 11204 GR2 at 3,000 sti/min.
- Sound power level (LWA) :
A-weighted value of 88.5 dBA ; (Includes
KpA = 2.5 dB) ; according to ISO 10821-
C.6.2 -ISO 3744 GR2 at 3,000 sti/min.
* 1 : Needle used depends on the destination.

Especificaciones del producto

Marca: Juki
Categoría: máquina de coser
Modelo: LH-3500A

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