Mitsubishi LU2-410 Handbuch

MITSUBISHI

INDUSTRIAL

SEWING

MACHINE

TECHNICAL

INFORMATION

Model

LU2-410.

-430

Single,

Double-Needle

Lockstitch,

Compound

feed.

Automatic

Thread,

Variable

Speed

ET-0I9A

MITSUBISI

ELECTRIC

MITSUBISHI

CONTENTS

MACHINE

HEAD

CONSTRUCTION

SPECIFICATIONS

THREAD

TRIMMER

DIAGRAM

PREPARATIONS

FOR

OPERATION

4~5

1. POWER

CABLE

WIRING

CONNECTION

WITH

CONTROL

BOX 5

ADJUSTMENT

NEEDLE

BAR

STOP

POSITION

NOTE

USE 6 ~ 7

OILING

(1) 6

OILING

(2) 6

LUBLICATION

CONDITION

ADJUSTMENT

LUBLICATION

ROTATING

HOOK

HANDLING

INSTRUCTIONS

HOW

USE

THE

SEWING

MACHINE

8~17

INSTALLATION

NEEDLES

WINDING

BOBBIN

THREAD

SELECTION

THREAD

THREADING

NEEDLE

THREADS

ADJUSTMENT

STITCH

LENGTH

AND

REVERSE

SEWING (TOUCH BACK)

SETTING

BOBBIN

WINDING

BOBBIN

THREADS

TENSION

ADJUSTMENT

BOBBIN

THREADS

BALANCE

THREAD

TENSION

10.

TENSION

NEEDLE

THREAD

11.

ADJUSTMENT

PRESSER

FOOT

PRESSURE

12.

TIMING

ADJUSTMENT

FOR

ROTATING

HOOK

AND

NEEDLE

13.

ADJUSTMENT

FEED

DOG

HEIGHT

14.

RELATION

BETWEEN

ROTATING

HOOK

AND

TAKE-UP

LEVER

15.

RELATION

BETWEEN

ROTATING

HOOK

AND

OPENER

MOTIONS

16.

RELATION

BETWEEN

NEEDLE

AND

FEED

DOG

MOTIONS

17.

SAFETY

CLUTCH

(SAFETY

DEVICE)

18.

ADJUSTMENT

UPPER

FEED

(NEEDLE

SIDE)

STROKE

19.

ADJUSTMENT

OUTER

AND

INNER

PRESSER

FOOT

From the library of Superior Sewing Machine & Supply LLC - www.supsew.com

ADJUSTMENT

THREAD

TRIMMER

18~24

INSTALLATION

MOVABLE

KNIFE

POSITIONING

THREAD

TRIMMER

CAM

ADJUSTMENT

THREAD

TRIMMER

CAM

ADJUSTMENT

THREAD

TRIMMER

ADJUSTMENT

MOVABLE

AND

FIXED

KNIFE

MESHING

PRESSURE

SHARPENING

THE

FIXED

KNIFE

.21

ADJUSTMENT

NEEDLE

GAUGE

DISTANCE

INSTALLATION

SOLENOID

CRANK

REMOVAL

HOOK

BRACKET

10.

FEED

DOG,

THROAT

PLATE,

HOOK,

BOBBIN CASE, BOBBIN,

AND

BED

SLIDE

11.

ADJUSTMENT

NEEDLE

STOP

POSITION

ADJUSTMENT

AND

APPLICATIONS

FOR

CONTROL

SYSTEM

25-27

SELECTION

POSITIONS

AND

PEDAL

OPERATION

ADJUSTMENT

PEDAL

OPERATION

PRESSURE

ADJUSTMENT

RUNNING

SPEED

OPTIONAL

FUNCTIONS

26-27

THREAD

TRIMMER

TROUBLESHOOTING

LIST

28-29

From the library of Superior Sewing Machine & Supply LLC - www.supsew.com

Take-up

lever

Crank

Needle

thread

tension

regulator

Eccentric

ring

Crank

rod

Oil

tank

Pressure

adjusting

screw

Needle

bar

rock

shaft

Thread

retainer

10.

Arm

shaft

11.

Timing

belt

pulley

(upper)

12.

Timing

belt

13.

Balance

wheel

14.

Synchronizer

15.

Arm

16.

Needle

bar

rock

link

17.

Reverse-stitch

lever

18.

Stitch

length

adjusting

dial

19.

Reverse-stitch

solenoid

20.

Feed

shaft

crank

(right)

21.

Timing

belt

pulley

(lower)

22.

Lubricator

23.

Feed

shaft

crank

(intermedi

ate)

24.

Feed

lifting

rod

25.

Filter

26.

Feed

rock

cam

27.

Hook

shaft

28.

Feed

rock

shaft

29.

Thread

timmer

solenoid

30.

Thread

trimmer

cam

31.

Touch-back

switch

(pushbutton)

32.

Feed

bar

33.

Movable

knife

34.

Fixed

knife

35.

Hook

36.

Hook

bracket

37.

Fixed

knife

bracket

38.

Opener

39.

Bed

40.

Pressure

bar

41.

Rock

pressure

bar

42.

Needle

bar

43.

Face

plate

44.

Needle

bar

clamp

45.

Needle

bar

support

From the library of Superior Sewing Machine & Supply LLC - www.supsew.com

SPECIFICATIONS

Specifications

LU2-410-B1T

and

LU2-430-B1T

Model

Specifications

LU2-410-B1T

LU2-430-B1T

Application

Heavy

materials

Max.

stitching

speed

2000

SPM

Stitch

length

Needle

bar

stroke

36.0

Pressure

foot

stroke

Knee

lifter

—

mm,

hand

lever —8

Needle

#20

#23

Rotating

hook

(for

thread

trimming)

Fully

rotating,

automatically

lubricated

horizontal

type

hook

equipped

with

bobbin

slys

running

prevention

spring

Fully

rotating,

automatically

lubricated

horizontal

type

hook

equipped

with

idle

running

prevention

spring

Alternate

up/down

stroke

Bobbin

Aluminum

bobbin

for

thread

trimming

Thread

trimming

method

Horizontal

combination

fixed

and

movable

knives

Lubrication

Automatic

Lubrication

Automatic

back-tack

Touch

back

leven

system

Bed

size

512

178

Note: Use feed dog,

throat

plate,

rotating

hook,

bobbin

case,

bobbin,

and

bed slide which

are

specifically

utilized

for

thread

trimming.

Use

high-quality

bobbin

which

not

deformed.

From the library of Superior Sewing Machine & Supply LLC - www.supsew.com

THREAD

TRIMMER

DIAGRAM

Af(gl.A-rnAiLr.i

Part

Names

Machine

head

Thread

trimmer

solenoid

11.

Synchronizer

cord

plug

Touch

switch

Motor

12.

Pedal

Reverse-stitch

control

Drive

pulley

13.

Operation

box

solenoid

Control

box

14.

Power

pushbutton

switch

Balance

wheel

10.

Machine

control

cord

15.

Phase reversing

plug

Synchronizer

plug

From the library of Superior Sewing Machine & Supply LLC - www.supsew.com

PREPARATIONS

FOR

OPERATION

Machine

Configuration

Face plate

Touch-back

switch'

Phase

reversing

plug

Ztype

LIMI-STOP

Control

txDx

POWER

CABLE

WIRING

Balance

wheel

Synchronizer

Receptacles

for

machine

cables

Rubber

cushion

IPower

pushbutton

switch

Solenoid

box

(option)

With

this

opetional

solenoid

box,

additional

functions,

such

automatic

back

tack,

can

used.

1.1

Connectors

Before

connecting

connectors

with

the

control

box,

sure

check

the

shapes

matching

connectors

and

their

inserting

directions.

1.2

Lamp

Leads

(1)

Lamp

leads

are

provided

the

back

motor

for

fitting

work

lamp

the

machine.

fit

the

lamp,

remove

the

insulation

tape

and

insulator

properly

from

the

lamp

leads.

Then,

connect

them

lamp

wires.

After

connection,

sure

protect

connected

wires

with

insulation

tape.

w•

{2}

Use

15-20

lamp.

nilfc

(3)

When

lamp

not

used,

properly

JK'.j-

s-,

insulate

lamp

leads.

1.3

Power

Cable

Connection

Cable

connection

for

power

supply

the

same

that

for

the

standard

clutch

motor.

(1) In

the

case

3-phase

motor,

connect

phase

red

lead,

phase

white

lead,

and

phase

black

lead.

sure

ground

green

lead

connecting

JUBf

(2)

Power

fuse

capacity

for

3-phase

motor

mniii

is 10 A;

that

for

single-phase

motor

(3)

Control

box

fuse

capacity

is 8 A.

1.4

Motor

Rotating

Direction

reverse

the direction of motor rotation, disconnect the phase reversing plug from the

motor end cover, turn It 180°, and then plug it into the end cover. In the case of a

single-

phase motor, turn on the switch after the motor is brought

acomplete stop (approx

imately 2minutes). Also, be sure

fully insert

the

plug.

From the library of Superior Sewing Machine & Supply LLC - www.supsew.com

CONNECTION

WITH

CONTROL

BOX

Round

hole

table

Wire

the

control

box

shown

right.

Solenoid

box

Note: (1)

For

the

sake

safety,

before

connecting

disconnecting

connectors,

sure

turn

off

the

power

switch.

(2)The

combination

machine

head

and

motor

control

box

specified

below.

Keep

mind

correct

combination

when

replacing

the

machine

head

control

box.

Machine

head

Control

box

LU2-410Binn

LE.MD-120

LU2-430BinD

LE-MD-120

ADJUSTMENT

NEEDLE

BAR

STOP

POSITION

Clutch

Brake

External

volume

Position

1/2

select

switch

When

the

pedal is kicked down by heel and thread trimming is completed, the machine stops

with

the

timing mark

"B"

matching with

the

white timing mark "C". The needle bar stop

position of all sewing machines are factory-adjusted. However, if

the

timing marks are

out

alignment more than 3 mm, adjust the setting position of light shielding disc in the following

procedure:

[Preparation]

Disconnect

the

plug

(12

pins)

cable,

which

comes

out

the

machine

head,

from

the

control

box.

2) Remove

the

synchronizer

cover.

3) Run

the

machine

and

stop

with

the

needle

position.

After

the

com

pletion

preparation,

start

the

ing

adjustment:

[Adjustment]

1) While holding

the

light shielding disc by

hand,

turn

the

balance

wheel

until

the

timing

marks

"B"

and

"C"

are

aligned.

Repeat

pedal

operation

(toe

down

and

heel

down)

several

times

make

sure

the

needle

always

stops

exactly

the

specified

position.

Then,

set

the

plug

(12

pins), which

comes

from

the

machine

head,

into

the

receptacle.

Whitetiming

mark

Light shielding disc

From the library of Superior Sewing Machine & Supply LLC - www.supsew.com

NOTE

USE

OILING

(1)

Fill

the

oil

reservoir

with

oil

the

"H"

mark.

Oil level

should

periodically

checked.

When

oil

level

lower

than

the

"L"

level,

replenish

the

reservoir

with

oil

the

"H"

level. Use

white

spindle

oil

speci

fied

Mitsubishi.

Oil

level

OILING

(2)

When a

new

sewing

machine

is used

for

the

first

time

sewing

machine

shelved

for

long

time

used

again,

apply

required

amount

oil

portions

indicated

arrows

the

figure

below.

From the library of Superior Sewing Machine & Supply LLC - www.supsew.com

LUBRICATING

CONDITION

Check

lubricating

condition

during

machi

running

viewing

oil

drips

through

the

oil

sight

port.

(Motor

maintenance)

Remove

dust

from

the

motor

filter

every

two

three

months.

(Continued

operation

with

lint-

dust-clogged

filter

will

cause

the

motor

overheat,

thereby

reducing

motor

service life.)

HANDLING

INSTRUCTIONS

ADJUSTMENT

LUBRICATION

ROTATING

HOOK

[ncrease

Decrease

Adjust

screw

Dustproof

filter

(1) When

the

power

turned

off,

keep

foot

away

from

the

pedal.

(2)

Note

that

the

machine

may

not

braked

when

the

power

turned

off

when

power

failure

occurs

during

operation.

(3) Be

sure

the

control

box

cover

during

sewing

operation.

Otherwise,

dust

will

enter

the

control

box,

resulting in

malfunction

and

trouble.

(4) Do

not

apply

multimeter

the

control

circuits.

Voltage

from

the

multimeter

may

damage

semiconductor

parts.

From the library of Superior Sewing Machine & Supply LLC - www.supsew.com

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