JUKI ACF-172-1790 Quick start guide

R
ENGINEER’S MANUAL
40018329
No.E360-00
1-Needle, Lockstitch
Automatic buttonholing Machine
ACF-172-1790

PREFACE
This Engineer’s Manual is written for the technical personnel who are responsible for the service and maintenance
of the machine.
The Instruction Manual for these machines intended for the maintenance personnel and operators at an apparel
factory contains operating instructions in detail. And this manual describes “Standard Adjustment”, “Adjustment
Procedures”, “Results of Improper Adjustment”, and other important information which are not covered by the
Instruction Manual.
It is advisable to use the relevant Instruction Manual and Parts List together with this Engineer’s Manual when
carrying out the maintenance of these machines. Further, refer to Engineer’s Manual, Instruction Manual and
Parts List for LBH-1790 series.
In addition, for the motor for the sewing machine with thread trimmer, refer to the separate Instruction Manual
or Engineer’s Manual for the motor. And for the control panel, refer to the Instruction Manual for the control
panel.
This manual gives the “Standard Adjustment” on the former page under which the most basic adjustment value
is described, and on the latter page “Results of Improper Adjustment” under which stitching errors and troubles
arising from mechanical failures are described together with the “Adjustment Procedures”.

CONTENTS
1. GENERAL...................................................................................................1
(1) Features................................................................................................................... 1
(2) Configuration of the main parts ............................................................................ 2
2. SPECIFICATIONS ......................................................................................3
3. ADJUSTMENT OF EACH MAIN COMPONENT........................................4
(1) Adjustment of the pneumatic components.......................................................... 4
1) Adjusting the air blower..................................................................................................................4
2) Adjusting the air blower for the needle bar.....................................................................................6
3) Vacuum adjusting metal fittings......................................................................................................6
4) Sensor to detect the number of garment bodies stacked...............................................................6
(2) Adjusting the carriage lamp .................................................................................. 8
1) Adjusting the position of the clamps...............................................................................................8
2) Adjusting the clamping force..........................................................................................................8
(3) Adjusting the stacking board of the stacker......................................................10
4. ERROR CODE LIST .................................................................................12
5. OPERATION FLOW CHART....................................................................16
6. STANDARD ADJUSTMENT....................................................................26
(1) Carriage components...........................................................................................26
1) Carriage drive components..........................................................................................................26
2) Carriage origin position components............................................................................................28
3) Carriage clamp table components...............................................................................................
4) Carriage clamp components (Including the blower).....................................................................32
.30
(2) Preset components .............................................................................................. 34
1) Configuration................................................................................................................................34
2) Preset slide components (including installing the preset table)....................................................36
3) Preset stopper components..........................................................................................................38
4) Preset drive components..............................................................................................................40
5) Set plate components...................................................................................................................42
6) Preset components and others.....................................................................................................42
(3) Stacker components ............................................................................................ 44
1) Configuration ................................................................................................................................ 44
2) Motion order ................................................................................................................................. 45
3) Swing bar components ................................................................................................................. 46
4) Cloth piling table components ...................................................................................................... 48
5) Pusher rocking components ......................................................................................................... 48
6) Cylinder tilt components ............................................................................................................... 50
7) Pusher drive components............................................................................................................. 50
8) Stacker components and others................................................................................................... 52
7. PANEL......................................................................................................54
(1) PANEL BASIC OPERATION.................................................................................54
(2) TABLE OF OPERATION BUTTON AND DISPLAY..............................................56
8. VARIOUS DATA LIST..............................................................................57
(1) Initial value data for each shape table................................................................57
(2) Sewing data list.....................................................................................................58
(3) Memory switch data list.......................................................................................64

9. ELECTRICAL COMPONENTS.................................................................68
(1) Initialization of the data........................................................................................ 68
(2) Adaptation to the high voltage............................................................................ 68
(3) DIP switches.......................................................................................................... 68
(4) Fuse list ................................................................................................................. 69
10. MAINTENANCE AND INSPECTION......................................................70
(1) Air layout diagram ................................................................................................ 70
(2) Sensor layout diagram......................................................................................... 72
11. TROUBLES AND CORRECTIVE MEASURES......................................73
(1) TROUBLES AND CORRECTIVE MEASURES ..................................................... 82
12. AIR PRESSURE PIPING DIAGRAM......................................................85
13. CIRCUIT DIAGRAM ...............................................................................86
(1) Block diagram A (3-phase 200 to 240V).............................................................. 86
(2) Block diagram B (Single phase 200 to 240V) ..................................................... 88
(3) Power circuit diagram (3-phase 200 to 240V) .................................................... 90
(4) Power circuit diagram (single phase 200 to 240V) ............................................ 91
(5) Connection circuit diagram between MAIN p.c.b. and I/O p.c.b....................... 92
(6) Device sensor circuit diagram............................................................................. 93
(7) Servo motor circuit diagram................................................................................ 94
(8) Solenoid valve circuit diagram............................................................................ 95
(9) Carriage motor circuit diagram ........................................................................... 96
14. GAUGE COMPONENTS ........................................................................97
15. 120 WORK CLAMP (5 X 120 ) ...................................................98
(1) Setting when 120 mm work clamp (presser) is used ........................................ 99
mm mm

−1 −
1. GENERAL
Mainly consisting of a sewing machine, preset board, carriage, stacker, the ACF-172-1790 indexer is designed
to automatically carry out a series of operations starting sewing button on the front top-center strips of men’s
shirts, etc. and ending with stacking of workpieces.
(1) Features
1. The material feed mechanism allows the material to be fed quickly at
accuratintervals.
2. The number of buttonholes or the feed to the sewing amount can be easily set or changed with the keys
on the control panel. Twenty different patterns can be stored in memory, which enables the operator to
quickly respond to the frequent setup changes.
3. The material is automatically fed to sewing position after it has been placed on the setting position. The
machine automatically performs a series of operations, including sewing, thread trimming and staking.
4. The operator can set the next material to be sewn while the machine is still sewing, allowing the
operator to have enough to attend on several machines.
5. Thanks to the presetting mechanism, it is possible for the operator to attend on four machines without
causing one of them to stand idle or for the operator himself/herself to become idle when two pieces of
garment body are set on.
6. The clamping mechanism clamps the material securely without allowing any slippage during the sewing
operation from inserting to stacking.
7. Buttonholes can be sewn also from the front to center strips of ladies’ garment body as well as gentlemen’s.
8. Sewing speed can be freely set by means of the panel variable resistor.
9. The machine is equipped with various error modes and performs self-diagnosis.
10.It is also equipped with a workpiece detector mechanism which eliminates a sewing start error.
11.The amount of finished products stacked on the stacker can be detected.

−2 −
(2) Configuration of the main parts
!3 Cloth palate
!4 Handle of the cloth plate
!5 Tool box
!6 Thread stand
!7 Filter box
!8 Machine head pause switch
92
451
!0
!2 !5
!1 6
7
!4 !3
!7
8
!6
1 Sewing machine head
2 Preset board
3 Carriage
4 Stacker
5 Control panel
6 Power switch
7 Knee switch
8 Pause switch
9 Hand switch
!0 Workpiece detector switch
!1 Air gun
!2 Preset adjusting knob (supplied with
the machine in the accessory box)
3
!8

−3 −
2. SPECIFICATIONS
D
B
C
L
P
A
Specifications
Computer-controlled high-speed buttonholing indexer
ACF-172-1790
3LBH-1790S (ACH exclusive head)
4Max. 4,200 rpm, Standard ; 3,600 rpm, When dry-hook is used : max. 3,300 rpm
6.4 to 19.1 mm (1/4 to 3/4")
Max. 14 mm
Standard : Width 4 mm X length 25 mm, (Max. width 6 mm X length 120 mm by replacing parts)
DP X 5 #11J to #14J
T/C broadcloth, wool (with top-center plait, 2-fold, 3-fold, 2-piece superimposed
feed)
Hook lubrication : JUKI New Defrix Oil No. 1 (equivalent to ISO VG7) Not
necessary when using dry-hook
0.2 to 2.5 mm
Width A : 220 to 420 mm (8.7 to 16.5")
Length B : 400 to 880 mm (15.7 to 34.6")
C : 0 to max. 140 mm (0 to max. 5.5") (140 mm (5.5") or more is possible by
means of jump feed function)
D : 7 to 21 mm (0.3 to 0.8")
P : 0 to 610 mm (0 to 24") Unequal length possible (possible to set in 0.1 mm unit)
L : 610 mm (24") (Possible to set in 0.1 mm unit)
1 to 20 pcs. (1 pc. independent sewing)
Rack and pinion drive by stepping motor
Right-hand direction (for men’s), Left-hand direction (for ladies’)
20 patterns
0.5MPa (5kg/cm )
240NL/min or less
Width 1,910 mm (75.2") X depth 850 mm (33.5") X table height 920 mm (36.2")
300Kg
MC-545
200, 220, 230V, 240V, 3-phase (domestic/export) / single phase (general export)
50/60Hz
1000VA
Constant-current system, 5-phase, material feed by 0.1 mm/pulse
Provided
Provided
Possible
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Item
Model name
Model
Machine used
Sewing speed
Knife size
Lift of work clamp check
Sewing dimension
Needle
Applicable garment
that can be sewn
Lubricating oil
Pitch
Applicable garment
size that can be sewn
Distance from the top
end of the garment body
to the 1st buttonhole
Distance from the side
end of the garment
body to the buttonhole
Feed interval
Overall feed amount
Number of buttonholes
which can be sewn
Material feed system
Feeding direction
Number of patterns that
can be stored in memory
Operating air pressure
Air consumption
Machine size
Weight
Control box type
Power supply
Power source frequency
Power consumption
Stepping motor control
Presetting unit
Garment body stacker
Pair stacking
2

−4 −
Standard Adjustment
3. ADJUSTMENT OF EACH MAIN COMPONENT
(1) Adjustment of the pneumatic components
15
4
62
7
3
1) Adjusting the air blower
A
B
C
D
8
9

−5 −
Adjustment Procedures Results of Improper Adjustment
1. The air blower is provided with four blow pipes as illustrated in
the figure on the left. The arrows of full line show the air blowing
direction of the respective pipes. The name and function of
each components are as follows :
Blower for the carriage 1
Blower for lifting the workpiece 2
Blower sucking the workpiece 3
Blower peeling off the workpiece 4
Machine head 5
Presetting table 6
Stacking board 7
2. The speed controllers are used to adjust the air blow of air blow
pipes 1to 4as illustrated in the figure on the left
Speed controller of the blower for the carriage A
Speed controller of the blower for lifting the workpiece B
Speed controller of the blower for sucking the workpiece C
Speed controller of the blower for peeling off the workpiece D
3. Table of relationship between the adjustment values of the speed
controllers at the time of delivery and the thickness of the material.
4. Turn knob 8of the speed controller in the direction of the arrow
to increase the amount of air to be blown. After the adjustment,
fix the knob at the adjusted position using locknut 9.
(Caution) Adjusting the amount of air to be blown while the
machine is in operation is very dangerous. Be sure
to turn OFF the power to the machine.
5. Adjusting the air blower for blowing down the workpiece
If sewing a heavy-weight material or a large-size material, fully open
speed controller Afirst. If the workpiece cannot be easily blown
down, gradually loosen speed controller Bto increase the amount
of air to be blown properly.
Ifsewing a light-weightmaterialor floppy material,setspeed controller
Bto the value adjusted at the time of delivery and tighten speed
controller Ato decrease the amount of air to be blown.
6. Adjusting the air blower for stacking the workpiece
If sewing a heavy-weight material or a large-size material,
loosen speed controllers Cand Dto increase the amount of
air to be blown properly.
If sewing a light-weight material, set speed controller Cto the
value at the time of delivery and tighten speed controller Dto
decrease the amount of air to be blown.
To be used for bellowing
down the workpiece
To be used for stacking the
workpiece
H
Light weight small ⇔Heavy .Large
Decrease Increase
No. H(mm)
Amount of air to be blown
A
B
C
D
14 ~ 15
13 ~ 14
14 ~ 15
13 ~ 14

−6 −
Standard Adjustment
2) Adjusting the air blower for the needle bar
3) Vacuum adjusting metal fittings
4) Sensor to detect the number of garment bodies stacked
9.5 ±0.5mm
14
3
2
1
3
4
2A
1
3
2