JUKI MEB-3810 User manual

i
ENGLISH
INStructIoN MaNuaL
MEB-3810

CONTENTS
1. SPECIFICATIONS...........................................1
2. NAME OF EACH COMPONENT ....................2
3. INSTALLATION ..............................................3
3-1. Table ...................................................................3
(1) Drawing of the table............................................... 4
(2) Drawing of the stand.............................................. 4
3-2. Installing the control box.................................. 5
3-3. Installing and connecting the power
switch .................................................................5
3-4. Taking out the sewing machine .......................7
3-5. Installing the sewing machine.......................... 8
3-6. Raising and returning the sewing machine .. 10
3-7. Installing the poly oiler ...................................13
3-8. Installing the operation panel......................... 13
3-9. Installing the regulator and the manifold ......14
3-10. Connecting the cords...................................... 16
3-11. Handling the cords .......................................... 17
3-12. Installing the foot pedal switch (optional)..... 18
3-13. Connecting the air supply ..............................19
(1) Connecting the regulator and the manifold ..... 19
(2) Connecting the air tubes ................................... 20
3-14. Installing the air hose...................................... 21
3-15.
Cautions for the compressed air supply
(source of supply air) facility ........................... 22
3-16. Installing the thread stand.............................. 23
3-17. Installing the thread guides............................ 24
3-18. Installing the eye protection cover and the
nger guard ....................................................25
3-19. Installing the cloth chip bag ...........................26
3-20. Installing/removing the presser unit.............. 27
4. PREPARATION BEFORE OPERATION.......28
4-1. Lubrication of the machine and how to lu-
bricate...............................................................28
(1) Lubricating the arm oil tank .............................. 28
(2) Lubricating the bed oil tank............................... 28
(3) Lubricating the looper and spreader compo-
nents .................................................................... 29
(4) Lubricating the looper bracket oil tank ............ 29
(5) Lubricating the needle bar and the gear sec-
tion ....................................................................... 30
4-2. Attaching the needle .......................................31
4-3. Threading the machine head.......................... 32
(1) Threading the upper thread (needle thread) .... 32
(2) Threading the lower thread (looper thread) ..... 33
(3) Threading the machine with gimp .................... 34
4-4. How to set the cloth on the sewing ma-
chine .................................................................34
5. STRUCTURE OF THE OPERATION
SWITCH ........................................................35
5-1. Structure of the operation panel ....................35
5-2. Temporary stop switch ...................................37
5-3. Hand switch .....................................................37
5-4. Foot switch (optional) ..................................... 37
6. HOW TO USE THE OPERATION PANEL ....38
6-1. Basic operation of the sewing machine ........ 38
6-2. Setting the thread tension .............................. 38
6-3. Temporarily stopping the sewing machine...39
6-4. Performing re-sewing...................................... 40
6-5. Performing threading ...................................... 41
6-6. How to use the counter................................... 41
6-7. When dropping of the knife is temporarily
not desired ......................................................42
6-8. Changing the operation mode........................ 42
6-9. Changing procedure of the sewing pattern .. 44
6-10. Conrming the pattern shape ........................44
7. SETTING PROCEDURE OF THE SEWING
DATA .............................................................45
7-1. Setting the knife No......................................... 46
7-2. Setting the cut length...................................... 46
7-3. Setting the cut-before/cut-after knives.......... 47
7-4. Setting the number of stitches of the paral-
lel section ........................................................ 47
7-5. Setting the number of stitches of the eye-
let ......................................................................47
7-6. Setting the cut space ......................................48
7-7. Setting the eyelet space.................................. 48
7-8. Knife position compensation ......................... 48
7-9. Number of stitches of sewing end compen-
sation................................................................49
7-10. Turning angle compensation..........................49
7-11. Turning angle compensation at the parallel
section..............................................................49
7-12. Compensation of eyelet in lateral direction .. 50
7-13. Compensation of eyelet in longitudinal di-
rection ..............................................................50
7-14. Compensation of eyelet, left in longitudinal
direction ...........................................................50
7-15. Compensation of left parallel section of a
buttonhole........................................................51
7-16. Compensation of cutting space, left.............. 51
7-17.
Setting the needle throwing width of the
right bottom of eyelet .................................51
7-18. Setting the needle throwing width of the
left bottom of eyelet ...................................52
7-19. Setting the needle throwing width ................52
7-20. Setting the type of bartack .............................52
7-21. Setting the length of taper bar ......................53
7-22. Setting the number of stitches of taper bar ..53
7-23. Setting the offset of taper bar ........................ 53
7-24. Setting the number of stitches of slant sec-
tion of taper bar ............................................... 54
7-25. Compensation of the number of stitches of
the right side taper bar ................................... 54
7-26. Setting the straight bar length ....................... 54
7-27. Setting the number of stitches of straight
bar.....................................................................55
7-28. Setting the overlapping amount of straight
bar.....................................................................55
7-29. Setting the needle throwing width of
straight bar.......................................................55
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7-30. Setting the number of stitches of round
bar.....................................................................56
7-31. Setting the number of overlapping stitches
of round bar 2 .................................................. 56
7-32. Setting the needle throwing width of the
round bar..........................................................56
7-33. Setting the needle throwing width at the
upper section of eyelet bar.............................57
7-34. Setting the reduced sewing speed for
straight/round bar ........................................... 57
7-35. Setting the sewing speed ...............................57
7-36. Setting the reduction speed of eyelet............ 57
7-37. Setting the soft start........................................ 58
7-38.
Setting the number of stitches at the beginning
of sewing of thread tension ..................................... 58
7-39. Setting the number of stitches at the end of
sewing of thread tension .................................. 58
8. ADJUSTMENT OF EACH PART ..................59
8-1. Adjusting the pressure of the cloth trim-
ming knife ........................................................ 59
8-2. Adjusting the stitch bite width ....................... 60
8-3. Adjusting the presser...................................... 61
8-4. Adjusting the presser opening amount......... 62
8-5. Adjusting the needle thread drawing
amount .............................................................63
8-6. Adjusting the thread take-up thread guide ... 63
8-7. Adjusting the remaining amount of the
gimp .................................................................64
8-8. Adjusting the gimp thread tension ................ 64
8-9. Needle thread clamp unit (optional) .............. 65
8-10. Adjusting the brightness of the hand lamp .. 66
9. HOW TO USE THE VARIOUS FUNCTIONS ..67
9-1. Operating procedure of thread tension
compensation of each section.......................67
9-2. Changing the setting position of cloth.......... 70
9-3. Changing over the mode of the start
switch ...............................................................70
9-4. Changing over the presser movement .......... 70
9-5. Changing over the counter (DOWN count-
ing)....................................................................70
9-6. Changing over to the mode of the stop be-
fore cloth cut....................................................70
9-7. Copying the pattern data ................................ 71
9-8. Deleting the pattern data ................................72
10. MAINTENANCE ............................................73
10-1. Looper thread trimming (overall thread
trimmer type) ................................................... 73
10-2. Timing between the needle and the looper... 73
10-3. Height of the needle bar.................................. 76
(1) Adjusting the needle bar height........................ 76
(2) Reference height of the needle bar................... 76
10-4. Adjustment to prevent triangular stitch
skipping in the case of a narrow needle
throwing width.................................................77
10-5. Clearance between the needle and the
looper ...............................................................78
10-6. Adjusting the needle guard ............................ 78
10-7. Clearance between the spreader and loop-
er and the opening timing of the spreader ...79
10-8. Height of the throat plate ................................81
(1) Height of the throat plate..................................... 81
(2) Adjusting the height of the throat plate ............. 81
10-9. Position of the presser foot............................ 82
10-10. Adjusting the knife dropping position........... 82
10-11. Installing position of the needle thread
trimming knife..................................................83
10-12. Cleaning ...........................................................84
10-13. Draining ............................................................ 84
10-14. Replacing consuamables ...............................85
(1) Worn-out of the hammer face............................ 85
(2) Replacing the cloth cutting knife and the
hammer................................................................ 86
(3) Replacing the looper thread trimming knife
(overall thread trimmer type)............................. 87
(4) Replacing the needle thread trimming knife.... 88
(5) Changing the thread trimmer retaining plate
(needle thread trimmer type) ............................. 88
(6) Standard of replacing time of the gas spring .. 88
(7) Replacing the gas spring................................... 89
11. EXCHANGING GAUGE PARTS AND OP-
TIONAL .........................................................90
11-1. Throat plate ...................................................... 90
11-2. Presser set ....................................................... 90
11-3. Presser holding plate ...................................... 91
11-4. Cloth cutting knife ........................................... 91
11-5. Hammer ............................................................ 92
11-6. Others ............................................................... 92
12. TROUBLES AND CORRECTIVE MEA-
SURES IN SEWING ......................................93
13. MEMORY SWITCH .......................................95
13-1. Operating procedure ....................................... 95
13-2. Memory switch list ..........................................96
14. ERROR LIST.................................................98
15. STANDARD PATTERN LIST ......................101
16. SEWING DATA ENTRY SHEET..................102
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– 1 –
1. SPECIFICATIONS
Specications J type C type
1 Application Jeans Cotton pants, working pants
2Operating temperature
range 5℃ - 35℃
3Operating humidity range 35 % to 85 % (with no condensation)
4Number of patterns that
can be stored in memory 99 (1 - 99) (standard patterns have been factory-numbered 90 to 99)
5 Input power Single-/3-phase 200 - 240 V 50/60 Hz
Supply voltage uctuation: Rating ± 10 %
6Sewing speed 400 to 2500 sti/min (in 100 sti/min steps)
7 Thread trimmer type Needle thread
trimmer type (00)
Overall thread
trimmer type (01)
Needle thread
trimmer type (00)
Overall thread
trimmer type (01)
8Sewing length 10 to 38 mm 10 to 34 mm 10 to 38 mm 10 to 34 mm
9 Buttonhole length 10 to 38 mm *110 to 28 mm 10 to 38 mm *1 10 to 28 mm
10 Needle throwing width 2.0 - 4.0 mm (factory-setting at the time of delivery: 2.5 mm)
[1.5 to 5.0 mm by compensation on the feed panel]
11 Length of buttonhole with
taper bar 3 to 15 mm *2
12 Lift of presser foot Standard 13 mm
13 Change of stitch shape Selection by program
14 Buttonhole cutting Cut-before knife + Cut-after knife, without knife
15Cloth cutting knife drive
method Driven by air cylinder
16 Feed method Intermittent feed by stepping motor
17 Needle used DO x 558 Nm90 - 120 (Needle count attached at the time of delivery: Nm110)
18 Safety device Pause switch & automatic stop function at the time of detection of a trouble
19 Lubricating oil JUKI MACHINE Oil No. 18
20 Air pressure Main regulator: 0.5 MPa
Hammer pressure regulator: Standard 0.35 MPa (max. 0.4 MPa)
21 Air consumption 49.5 ℓ /min (11.6 cycles/min)
22 Machine dimensions
Machine head: 382 mm (width) x 656 mm (length) x 584 mm (height)
Complete unit: 1050 mm (width) x 700 mm (length) x 1248 mm (height) *3
(excluding the thread stand)
23 Power consumption 250 VA
24 Mass Machine head: Approx. 110 kg; Operation panel: Approx. 0.3 kg
Control box: Approx. 4.5 kg
25 Noise
-Equivalent continuous emission sound pressure level (LpA) at the workstation :
A-weighted value of 82.0 dB; (Includes LpA = 2.5 dB); according to ISO 10821-
C.6.3 -ISO 11204 GR2 at 2,500 sti/min for the sewing cycle,3.8sec. (Pattern :
No.90).
-Sound power level (LWA) ; A-weighted value of 89.5 dB; (Includes KWA = 2.5 dB);
according to ISO 3744 GR2 at 2,500 sti/min for the sewing cycle,3.8sec. (Pattern
:No.90).
*1 : For the machine provided with the optional needle thread clamp unit, the buttonhole length is 10 to 28 mm.
*2 : Parallel section: Taper length can be set to such a value that does not exceed the total of the eyelet section and the
bartacking section.
*3 : The height of the completed unit differs with the height of the table stand.

– 2 –
2. NAME OF EACH COMPONENT
1Temporary stop switch
2Presser switch
3Start switch
4Operation panel
5Control box
6Power switch
7Hand pulley
8Machine head
9Thread stand
!0Feed base
1
!0
7
4
5
6
7
8
9
2
3
• Hand pulley 7
The needle bar can be lifted or lowered by
hand with the hand pulley.

– 3 –
3. INSTALLATION
DANGER :
1. The sewing machine should be installed by a trained technician.
2. Contact the distributor or a professional electrician to ask him/her to carry out electric wiring.
3. The sewing machine has a mass of approximately 110 kg. Four or more workers are required
to carry out the installation of the sewing machine and adjustment of the table height.
4. Never connect the power plug until the installation of the sewing machine is completed in or-
der to protect against an accident due to an abrupt startup of the sewing machine.
5. Be sure to ground the earthing wire in order to protect against an accident due to electrical
leakage.
6. Be sure to raise/return the sewing machine from/to its home position by holding it with both
hands.
7. Do not apply an unreasonable force to the sewing machine when it is in the raised position. If
such a force is applied, the sewing machine can lose its balance to fall alone or fall together
with the table, resulting in personal injury or sewing-machine breakage.
3-1. Table
• Use the table and stand which are able to withstand the sewing machine mass (110 kg) and vibration.
The table thickness of which is 40 - 60 mm should be used.
• Use the table stand which has an appropriate height for the sake of the operator's ease of use.
• The xing bolt for xing the table and the stand should be of the length which matches the thickness of
the table.
1. In the case the table thickness exceeds 60 mm, the length of the bolts supplied with the unit
as accessories is adequate.
2. In the case the xing bolt for xing the table and the stand is too long for the table thickness,
unexpected injury to hands or head can occur.

– 4 –
(1) Drawing of the table
For the thread
stand
For the manifold mounting plate
For the
regulator
bracket
For the
operation
panel cord
For the poly oiler
For the bottom cover
For the
control box
(2) Drawing of the stand
For stand
For cords
For power switch
For the manifold mounting plate
for needle thread clamp
For the sub
table (right)
For the sub
table (left)
For operation
panel

– 5 –
1
2
3-2. Installing the control box
Install control box 1to the location illustrated in the
gure using four bolts 2, four plain washers 3and
four spring washers 4and four hexagonal nuts 5
supplied with the unit.
Install control box 130 mm or more away
from the stand. If control box 1is located
too close to the stand, the former can get
hot or the sewing machine can malfunc-
tion.
Bolt 2is a cup head square neck bolt (M8;
Length: 70 mm) and nut 5is a hexagonal
nut (M8).
3-3. Installing and connecting the power switch
1) Installing the power switch
Fix power switch 1on the underside of the table
with two wood screws 2.
Wood screw 2has the nominal diameter
of 5.1 mm and a length of 20 mm.
1
3
4
5
30 mm or more

– 6 –
Brown
Brown
Light blue
Light blue
Light blue
Green/Yellow
– GND
Green/
Yellow
Plug
Power source cord
Power switch
• Connecting single phase 200V to 240V
White
AC200 to AC240 V
• Connecting three phase 200V to 240V
Red White
Black
Table
Control box
Black
Red
Green/
Yellow
Brown
Green/Yellow
– GND
Red
Green
PlugControl box
Green/
Yellow
Black
White
Power switch
Table
Never use the machine unless the voltage specications described on the power indicator label
are satised.
2) Connecting the power cable
Power source cord
Power switch side
Plug side
Power switch side
Plug side
Rating plate
Voltage specications are shown on the power indication tag attached on the power cable and on the rating
plate adhered on the power box. Connect the cable which matches the specications.
Power indication tag
(For example:
In the case of
200V)
AC200 to AC240 V

– 7 –
DANGER :
1. The sewing machine should be taken out by a trained technician(s).
2. The sewing machine has a mass of approximately 110 kg. Four or more workers are required
to take out the sewing machine.
3. Do not apply an unreasonable force to the sewing machine until the installation of the sewing ma-
chine is completed. If such a force is applied, the sewing machine can lose its balance and can
fall alone or together with the table, resulting in personal injury or sewing-machine breakage.
4. Never connect the power plug until the installation of the sewing machine is completed in or-
der to protect against an accident due to an abrupt startup of the sewing machine.
3-4. Taking out the sewing machine
1) Remove accessory boxes 1and 2in the direc-
tion of the arrow.
2) Remove upper foam polystyrene 3in the direc-
tion of the arrow.
3) Remove the right and left intermediate foam poly-
styrene 4and 5in the direction of the arrow.
Place a cardboard sheet or packing material be-
tween the oor and the sewing machine in order
to avoid damaging the floor and to prevent the
cords from being pinched between the INT cover
and the oor.
4) Take out the sewing machine from the package, by four workers, holding the portions illustrated in the g-
ure. Place it on the oor.
3
45
1
2
Cord
INT cover