Yamato VT2500 Manuel utilisateur
Thank you for purchasing this product. This instruction manual contains infor-
mation on how to handle this product and precautions in usage. Before using
the product, read this instruction manual carefully and familiarize yourself with
its content. Also, keep this manual in safe handy place so that others may use
it as future reference.
Instruction Manual
3-Needle Cylinder Bed
Interlock Stitch Machine
VT2500 Class
VT1500.2500_01
Safety Instructions i～iv
1. Name of each part 1
2. Installation 2
2.1 Tabletoptype..................................................................................................................................................... 2
2.1.1 Tablecuttingdiagram.................................................................................................................................................2
2.1.2 Installationontotable..................................................................................................................................................3
2.2 Semi-submergedtype.................................................................................................................................. 4
2.2.1Tablecuttingdiagram.................................................................................................................................................4
2.2.2Installationontotable..................................................................................................................................................5
2.3 Motor,pulleyandbelt................................................................................................................................... 6
2.4 Hangingbelt......................................................................................................................................................... 7
2.5 Beltcoverinstallation.................................................................................................................................... 8
2.6 Threadtensionunitinstallation............................................................................................................ 9
2.7 Eyeguardandfingerguardinstallation........................................................................................ 9
2.8 Presserlifterpedalinstallation.......................................................................................................... 10
2.9 Supplementarycoverinstallation.....................................................................................................11
3. Sewing speed and pulley rotating direction 12
4. Lubrication 13
4.1 Lubricatingoil................................................................................................................................................... 13
4.2 Lubricating.......................................................................................................................................................... 13
4.3 Changingoil....................................................................................................................................................... 14
4.4 Oilfiltercheckandreplacement....................................................................................................... 15
5. Proper operation 16
5.1 Detaching/reattachingcylinderfrontcover............................................................................ 16
5.2 Needlesystem................................................................................................................................................. 16
5.3 Needleinstallation........................................................................................................................................ 16
5.4 Threading..............................................................................................................................................................17
5.5 Threadtensionunitadjustment........................................................................................................ 18
5.6 Presserfootpressureadjustment................................................................................................. 18
5.7 Differentialfeedadjustment............................................................................................................... 18
5.8 Stitchlengthadjustment........................................................................................................................ 19
5.9 SPdevice..............................................................................................................................................................20
Contents
Note
This product is subject to change without notice. Due to such event, the contents of this manual may not match the
product in some regards. Every effort has gone into making this manual, nevertheless should you discover any mistakes
or missing information, please note that it may not always be possible for Yamato to correct those errors immediately.
Remarks
◇Thismanualhasbeenpreparedprimarily
forengineers,butinformationmarked
with shouldbereadbyoperatorsas
well to ensure the machine is properly
used.
◇Illustrationsinthismanualbearanumber
underthelowerleft-handcorner.These
numbersalsoappearinthebodyofthis
manual,therefore,asnecessary,referto
theindicatedillustration.
5.10 UsingPresserFootReleaseLever...................................................................................................20
5.11 Fabricedgeguidesadjustment......................................................................................................... 21
5.12 Cleaning.................................................................................................................................................................22
6. Machine adjustment 23
6.1 Needlethreadtensionadjustment.................................................................................................23
6.2 Topcoverthreadtensionadjustment..........................................................................................24
6.3 Looperthreadtensionadjustment.................................................................................................24
6.4 Needleandspreaderadjustment....................................................................................................25
6.4.1Spreaderadjustment................................................................................................................................................25
6.4.2Topcoverthreadguideadjustment........................................................................................................26
6.4.3Topcoverthreadeyeletadjustment.......................................................................................................26
6.5 Needleandlooperadjustment...........................................................................................................27
6.5.1Looperandneedledistance.............................................................................................................................27
6.5.2Looperangleandheight.......................................................................................................................................27
6.5.3Looperfront-rearposition..................................................................................................................................27
6.6 Needleheight....................................................................................................................................................28
6.7 Needleguard(rear)adjustment.......................................................................................................29
6.8 Needleguard(front)adjustment.....................................................................................................29
6.9 Feeddogheightadjustment................................................................................................................30
6.10 Presserfootpositionadjustment....................................................................................................30
6.11 Presserfootstoppercollaradjustment..................................................................................... 31
6.12 Detaching/reattachingpresserfoot.............................................................................................. 31
7. Toubleshooting 32
8. Specifications 33
Contents
i
1. To ensure safe use
Always observe the following instructions to
ensure the safe use of the industrial sewing
machines and devices.
1.1 Application and purpose
The sewing machine is designed to improve
productivity in the sewing industry and
must not be used for other applications and
purposes. Do not use this sewing machine until
it can be conrmed that safety measures for
the drive units have been taken.
1.2 Before use
Read all instruction manuals thoroughly before
starting the use of this machine and follow
them.
Also, read the instruction manual for the
installed drive unit.
1.3 Working environment
DO NOT WORK IN THE FOLLOWING ENVIRONMENTS:
◇ Place where atmosphere temperature
and humidity give a bad influence the
performance of sewing machines.
◇ Outdoors and place where the sewing
machines are exposed to sunlight directly.
◇ Atmosphere containing dust, corrosive gases
or ammable gases.
◇ Place where voltage uctuation exceeds ｱ10%
of the rated voltage.
◇ Place where power capacity necessary for
the used motor specifications cannot be
secured.
◇ Place where strong electric or magnetic
fields are generated such as near large-
output high frequency transmitters or high
frequency welding machines.
1.4 Unpacking and transportation
（1） Unpack from the top.
（2） Never hold the parts near the needle or
threading parts when removing the sewing
machine head from the buffer of box.
（3） When carrying the sewing machine head,
have an assistant.
（4） Pay attention not to get excessive impact
or shock when moving the sewing machine
head with a pushcart.
2. Installation and preparation
Always observe the following instructions to
ensure the safe use of the industrial sewing
machines and devices.
2.1 Instruction and training
Operators and workers, who supervise, repair
or maintain the machine head and machine unit,
are required to have the adequate knowledge
and operation skills to do the job safely. In
order to establish such necessary conditions,
it needs for the employer to plan and enforce
the safety education and training to those
workers.
2.2 Sewing table and motor
（1） Prepare a machine table that has enough
strength to withstand the weight of
the sewing head and any reaction while
operating.
（2） Maintain a comfortable working environment
with considering the lighting and the
arrangement of sewing machine so that the
operators can work smoothly.
（3） When installing the control box and the
related parts on the sewing machine, take
care about the posture of the worker.
（4） Install the drive unit correctly according
to the instruction manual.
Safety Instructions
ii
2.3 Wiring
（1）Never connect the plug for power supply
until assembly is nished.
（2）Fix the connectors securely to the
sewing machine head, motor, and electric
apparatus.
（3）Do not apply excessive force to the
connection cords.
（4）Connect the cords away from the driving
parts.
（5）Place the ground wire securely to the
designated position on the machine head.
2.4 Before operation
（1） Take care not to attach lubricant,
silicone oil, and grease on the eyes or
skin. Keep them away from children.
（2） Be sure to fill or drop lubrication oil
before operating the sewing machine.
Use the Yamato SF oil as specied.
（3） Never put your hand under the needle or
near the moving parts of the machine when
turning on power supply switch.
（4） When operating a new sewing machine, make
sure the rotating direction of pulley
agrees with the rotating-direction mark.
2.5 During operation
（1） Be sure to operate the sewing machine with
the safeguards such as belt cover, nger
guard, and eye guard.
（2） Never place the finger, hair or objects
under the needle or close to the moving
parts while operating the sewing machine.
（3） Be sure to turn off the power supply
switch when threading or replacing the
needles.
（4） Never place your hands close to the knives
when operating the sewing machine with the
trimming devices.
（5） Be sure to turn off the power supply
switch when terminating the sewing work or
leaving the sewing machine.
（6） If the sewing machine malfunctions,
abnormal sound or smell something unusual
while operating, be sure to turn off the
power supply switch.
2.6 Removal
（1） Turn off the power supply switch if
removed or replaced any parts or during
adjustment of sewing machine.
（2） Do not pull the cord when removing the
plug. Be sure to hold the plug itself.
（3） A high voltage is applied inside the
control box. Turn off the power supply
switch and wait more than 5 minutes before
opening the cover.
3. Maintenance, inspection, and repair
（1） Follow the instruction manuals for
maintenance, inspection, and repair.
（2） Entrust the maintenance, inspection, and
repair to specially trained personnel.
（3） Be sure to turn off the power supply
switch and make sure that the sewing
machine and motor completely stop before
the maintenance, inspection, and repair.
(If using a clutch motor, take care
that the motor keeps turning for a while
even after turning off the power supply
switch.)
（4） Do not modify the sewing machine by the
customer’s judgment.
（5） Be sure to use original replacement parts
for repairs or maintenance.
Safety Instructions
iii
4. Caution signs and alert pictorial markings
This instruction manual contains the following
caution signs and alert pictorial markings
to prevent you from injuring yourself or the
sewing machine from being damaged.
Please follow the instructions.
4.1 Meanings of caution signs
WARNING
indicates potentially hazardous
situations which, if not heeded, could
result in death or serious injury to you
and others.
CAUTION
indicates hazardous situations which,
if not heeded, may result in minor or
moderate injury to you and others, or
may result in machine damage.
4.2 Alert pictorial markings
This mark indicates the warning which,
if not heeded, could result in death
or serious injury.
This mark indicates the caution for
high temperature.
This mark indicates the warning which,
if not heeded, could result in death
or Serious injury. And also this mark
is used to emphasize the important
information.
High-voltage applies in the control
box. This label indicates that
electric shock may be caused.
This mark indicates the caution
which, if not grounded, the machine
or device could malfunction and could
result in personal injury.
5. Warning labels on sewing machines
1
2
This label indicates that
removal of the safeguards
and works except for
sewing performance while
the power supply switch
is on are prohibited.
(For details, see the
next page.)
High-voltage applies in
the control box. This
label indicates that
electric shock may be
caused.
This label is affixed
on the safeguards.
Considering the
operation, it is not
afxed on the nger guard
and eye guard. Be sure
to operate with the nger
guard and eye guard in
position.
Stepping motor and
solenoid may overheat if
used continuously. To
prevent a burn, take care
not to touch.
If not connected earth
line, static electricity
may be generated and
inict injury on person.
In addition, the
malfunction of electric
system may cause injury
to person.
Check the rotating
direction of machine
pulley agrees with
‘ROTATING-DIRECTION
SYMBOL’.
Safety Instructions
iv
VT1500.2500_01
6. Location of Safety Labels
Safety labels are placed adjacent to potential hazards.
Keep these labels clean and easily readable at all times; should a label become damaged or lost,
a replacement should be ordered.
1
2
Safety Instructions
1
VT2500
VT1500.2500_01
1.Name of each part
●Presser spring regulator●Lifter lever
●Differential lever
● Thread
tension
unit
●Oil sight window
●Presser foot
●Pushbutton
●Chain cutter
●Eye guard
●Oil gauge
●Oil reservoir
●Pulley
●Cylinder front cover
001
002
●Finger guard
003
●Presser foot release lever
2VT2500
2.Installation
004
2.1 Table top type
2.1.1 Table cutting diagram
4‑R20
Y
Y
XX
4‑φ6.5
185
30
140 160
φ16
33
Machine pulley center
R10
160 75.5
110
750（Internal dimension between table legs）
343.5
359
Operator
25 80
R25
R25
R10
154230
C
D
41
222
(257)
Belt center
Presser lifter
shaft support
Table external dimensions: 1200×595×40(mm)
60゜
10
Section Y‑Y
Section X‑X
3‑φ9.5
(Motor installation hole)
3‑φ26
7
50
B A
E F
15
224.5
Pedal position
Right 260 270
200 410
Left
E F
* For dimensions A, B, C and D, see the Instruction Manual of the motor.
Presser lifter shaft support
installation location
3
VT2500
2. Installation
The sewing machine weighs 42 kg or more. Work in
twos or more when unpacking, carrying and installing
the machine.
CAUTION
2.1.2 Installation onto table
Install the sewing machine correctly as shown in
Fig. 004, 005 and 006.
（1） Attach the bolts and nuts to the machine
table.
（2） Cover the bolts with the rubber cushions.
（3） S et the sewing machine over the rubber
cushions.
Rubber cushion
Nut
Bolt
Machine table
Machine table
Sewing
machine
Rubber
cushion
005
006
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