Seiko DCN Instruction Manual

INSTRUCTION MANUAL

SEIKO SEWING

MACHINE

CO.,LTD.

@

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2.

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4. Jnift 3

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15

CONTENTS

1.

SPECinCATIONS-

2.

INSTALLATION

3.

INSTALLAING

4.

LUBURICATIpN-

5.

INSTALUNGTHgNEEDLE 3

6.

THEREADING-^

7.

ADJUSTING

8.

ADJUSTING

9.

ADJUSTING

10.

ADJUSTING

11.

ADJUSTING

12.

ADJUSTING

13.

ADJUSTING

14.

ADJUSTING

15.

ADJUSTING

16.

ADJUSTING

17.

ADJUSTING

18.

ADJUSTING

THE

THE|tHREAD

THfPRESSERrobTlRES^RE- 7

OTE

- - 1

THE BELT GUARD; 2

.a'..'•••iii-

STITCH

"x*'/."'

LENGTH

"•

— 5

TENSION

HIGHTrOF,FEED

THE

POSITION

THE

POSITION

THE

LOOPER

THE

HIGHT

THE

POSITION

fMe

spreader----

THE

THREAD

THE

TIMING

POSITION--

OF

GUIDE

BELT

pOGr-

OF

FEED

OF

NEEDLE

NEEDLE

- 8

DOG

BAR

BAR

OF LOpP.DEFLECTOR 13

— H

2

3

4

6

9
9

10

12

15
15

1.

^ #

M:k^m

nmm^

1.SPECIRCAT10NS

Model

Applications

For

ieans,

DVX57

sewing

working

DCN^?y?^o°p

4,000

#11~#25

heavy

wear.UDholstery.tents.etc.

6.4inin

31.75mm

8mm

DON

Series

weight

s.p.m.

lfN^t#22

materials

such

as

Sewing
Stitch

Needle

Presser

Needle

speed

length

bar

foot

(max.)

(max.)

stroke

lift

DVX57

4.000

#11

s.o.m.

6.4mm

31.75mm

8mm

-'#25

Standard

#22

2.

SS/INSTALLATION

3.Jll^TiiJ6^Eg^i$±4't-ili^il:^-

3.R®5^65j$^/lnstalling

1.Assemble
machinebase

2.

Place

woodscrews

3. Attach four machine cushions 'neoprene' @ .

4. Connect

oiler

^

the

belt

guard

machin

oil

© to

oil

oil

drain

®.

base

@.

drain

drain

jar

extention 'male'® to

on

table

with

the

three

jar

extention 'femare'® and

jar

extention

'male'

® .

1.

mT±^wMm^®o

2.

3.

i^^±2i®±®T±$fe®o

4.

5.

7.

WLmm2^m&m^®m^^w®m^.

1.

Remove

2. Loosentwo screws

3.

Remove

4. Put belt guard body® in shaft and then attach

machine

point (V groove) in

5.

Place

6. Rx belt

7. Put belt cover® on belt

two screws

screw®

from

®.

the machine

pulley

v-belttomachine

guard

body

pulley®from

to shaft bytwo screws ® at

shaft

® bythree screws

®.

machine

pulley.

guard

pulley.

body

shaft

©.

and

®.

fix

locking

it by

4.

Dn

?ft/Lubrication

1.

4.

T%S«lJO

1.The

'

first,

2. Add 1-2 drops oil in

3.

Lubricationstoarm

pulley and point of

4.

Lubrication

point

sewing

and

jftasffc.

fi!tfff4*ffiKl"B"&ffiift20-i

machine

also

after

to bed shaft:

should

long periodsofnon-use.

the

shaft:

the

always

indicated by arrows..

Supply

arm.

Supply

be lubricated and

20-30

also

20—30

supply

dropsin"A''after

drops

to "B after

Ai

replenished before it is used for the

setting

the

placing

hallmark

"T"ofthe

the needleat the lowest

S-lfe^fteS^/Installing

the

needle

1.

2.

3-

1. Turn machine pulleytoward operator until

, needle bar is at its highest point

2. Loosen

3. Insert needle into needle bar or clamp with leftward
needle groove as far as it

4.

Set

screw

needle by screw (1).

(1)

will

the

go.

6.

^^Kl^AlJ^ft/THREADING

1.

®^6^^A;^^Ahreading

the

needle

thread

=U

2.

jlS^6^^A^^/Threading

the

looper

thread

a Q & o

(S>

M

Q> Q>

4

7.ftE66i]ilSS/Adjusting the stitch length

Ji$fe^iB/Pulley

H'£&(mm)/Sutich

1.

Depress

operator

(locking position)

2.

Depress

3.

Hold

direction0to

4.

When

outward.

feed

until

button©locatedInthe center of

down,

andturii

desired

Caution:Never

recovers.

I

mark

length

regulating

plunger

decrease

plunger®.Continuetohold

enters

machine

notchInarm

pulley©toward

lengthofstitch.

lengthIsobtained,

operate

machine

Otherwise

other

A

6.4

release the

with

plunger®In

mechansim

8

4.9

plunger

shafteccentric.

machine

button

willbebroken.

bed

direction

and

depressed

C

3.4

down

Then

turn

until

button

Bto Increase

turn

plunger®toward

position

F
1

pulley©toward

and

D

2

turn

E

1.2

machine

plungers90degreestodirection

enters

length

notchInbed

shaft eccentric.

of stitch, or toward

directionAuntilitsprings

and

wait

until

the depressedbutton

A.

Adjusting

Thread tension should be adjustedateach opeartion, as it may be changed depending on sewing cpndition

suchasthread,

material,

the

thread tension

etc.

1.To change needlethread tension,turn nut ® and®,as

may

be required.

2.Turn nut ® and ® toward direction Ato obtain more tension or toward direction B to

obtain

less

tension.

/Perfect

stitch

/Needle

thread

/ \ ^^^^VUnstable

t • •' J • •

1?

/Looper

thread

stitch

9.ff

Mffi^fitfiJil^/Adjusting the presser foot pressure

U

C

B

r

1.

1.

Presser

2.Turn adjust screw ® toward direction Ato

increase

decrease

foot

pressureisadjusted

pressure

pressure.

and

toward

by thumb screw.

direction B

to

±.

y

tf^EE;tl6tlW^/A(Jiustingthe

OU

roller pressure

1.

1.

2.Turn adjust screw ® toward direction A to

Presser

increase pressure and toward direction B to

decrease

foot

pressure.

pressure

is adjusted by thumb screw.

10.iM^3^iii®ilSS/Adjustingthe hight of the feed dog

When

the

of

throat

needle

plate,

barisat

and

the

its

lowest

topofthe

position, full

teeth

shouldbeparallel with

depthofteeth

1.

2.

•

3ll?l3^6^7R¥Tii!i

N 1.

should

throat

project

plate.

1.0 mm

above

upper

surface

6^7jc^'feSo

3.

•

Setting

1. To

tilt

2.

Loosen

height by screw

In

top

3.

When

the

heightoffeed

adjust

the

machine

nut ® and

height,

backonits

remove

Sfcrew

hinges.

®.

lowering

surfaceofthe

feed

dog

teeth

position,

downward.

correct heightis obtained, tighten screw ^

and nut (D securely.

•

Setting

the

horizontaloffeed

1.To obtain horizontal of feed

and

makeanadjustment

2. When

the

feed

pinch

screw© securely.

dog

position is

dog

throat

plate

and

@ and adjustfeed dog

depress

dog

dog,

set

the

loosen screw ©

correctly,

8

11 .M^iT3^H!r®'feBtei^S/Adjusting the position offeed dog

Turn

the

between

machine pulley, place

throat

plate

and

the

feed

dog should be

feed dogatthe

setat1 mm.

nearest

position to operator and

1.

2.

1. To

adjust,

clearance

move

between

two screws ® and screw (D.

2. After the clearacne is
and screw ® securely.

feed

throat

dog

fixed,

the

clearance

until it

plate

makes

and

feed

correct

dog

tighten two screws ®

by

1 Adjusting

The

standard

clearance

between

the

sideofneedle

the

positionofneedle

and

1 mm when turned machine pulley toward operator and

of

feed

dog.

n-

0

—

—

—

—

—

o

o

.

bar

'

the

frontofneedle

the

needle point reached above upper surface

1.

1. Place together the letter

holeoffeed

"k"

dog

on machine pulley

and arm point (the longest stitch length)

2.

Loosen

or

3. Afterthe needle bar is

securely.

screw ® and move needle bar forward

backward

until

correct

position.

fixed,

tighten screw ®

should

be

1

S.^^fi^USS/Adjusting

the

looper position

0.05-0.2%

iSSSO.05—0.2mm^&S®.

1.fe

JF«

iise.Jtmsss®-

2.

S#i-4(f^>lk®DSaW,

1.

♦aff2-f^#fH««M@.ifflSlSI^.

2.

5mm

i@SWit.--

1.

2.

Clearance

The standard clearance between groove of needle and looper point should be 0.05-0.2mm.

1.To

acQust

between

looper

looper

position,

and

needle

loosen screw ® and

move

looper

holder to get correct clearance.

2,Tighten the looperholderscrew ® securely

Clearance

The standard clearance between rightside of loopers and

front

1.To

2.After

Looper

When

needle during forward and backward movements of looper.

position.

acOust

loopers

position

pulley

between

looper

and

loop

deflector

loop

deflector shouldbe

clearance, loosen two screwsd)and moveloopers untilcorrect position.

are

fixed,

tighten two screws(D securely.

for

back

and

forward

is turned towardthe operator, looperpoint

movements

should

pass the same position in

1.5mm

when

groove

loopersare in

of

1.To

make

this adjustment, loosen screw (D

and,

then

change

the

position

of loopercan by adjusting the

tightness of two screws @ .

2. Tighten screw

(3)

and screws @ securely.

10

WAUltON

1.

2.

Looper

2.5"^

Needle

J:$&f^f^^{S'Jlt^.

2.

• Lengthwise

When

armpoint 0 on

looper

of

the

1.Toadjust

the

looper

is

directlyonthe

settingoflooper

timingmark "T'^® on machine pulley and the

the

arm is placed together the

point

shouldbedirectly

needle.

the

position,loosen screw ® and move

forwardorbackward

oppositeofneedle

2. Tighten screw© securely

•

Settingofneedle

When

needle

needles

looper

their

turned

slightlyatthe

point

forward

toward operator.

And needles should

without

touching.

guard

guards

reaches

strokes

are

positionof2.5 mm

the

when

pass

55lilf4''Ci^2.5mm

opposite

until

position

properly

set.

centerofthe

machine

pulley

loopers closely,

the

looper
center.

they

needle

but

center

point

touch

before

on

is

Needle

guard

1.Toadjust

2.

11

and

obtained.

Tighten

turn

loosen

needle

set

needle

guards

screws @s ® securely.

guard

until

set

coirect

screws ®

positions

are

1iMS/Adjusting

the height of needle bar

1.

1IS#|-fF«iii5g.

2.

Needle

iiS©,fi=Ka5t!li^®.

#f

ff

#S4

Looper

2~y%i

1

After looper position is

bar

against

side needle

1.Toadjust

screws 0 and move needle bar to correct position.

looper

eye

open

comes

fixed,

the height of the needle

shouldbepositionedsothat

2-3

mm above looper

face

plate

and

loosen

two

2.Tightentwo screws ® securely

upper

point

12

15.iM^5F®J®SiStljM&/Adjusting the

loop

deflector

ftJnd^lBjltiifiSO.Smm'^l.Oinin.

0~1.0mm2E^o

0.5mni—1.0mm

Loop

deflector

0-1%

2.

iaiEe.yfS0S«M®.

•

Sidewise

When loop

should

left

sideofloop

feed

dog,

at

their

strokes.

•

Lengthwise

The

topofloop

upper

the

lowest

positioning

deflectorispositioned

beaclearance

and

right

extreme

positioning

deflector

sideofthe

position.

of

deflector,

sideofneedle,

forward

needle

correctly,

0.5-1.0

locatedonunderside

positionsontheir

shouldbe0 - 1.0 mm above

when

mm

when

needleisat

there

between

loopers

forward

its

1. Loosen two loop deflector screws (1) and move

deflectors

2. Tighten

until

correct

the

two screws (1) securely

positioning is

obtained.

the

of

are

13

1

e.S^^pPKliJiS/Adjusting

0.2-0.5%,

the

spreader

aw.JSW-®jnse^/R5fea5;isiKirflPtiS

[e-mail]

2.

i@SEe,itlg0SS«®.

se^/nsi^sssiMw.fi^/R

.^^#f-^«®fti)lWPi®iiS:^0.2~0.5mm.

a^/Kilji^W-WlSIPtiHS^&0.5-t2mm.

0.5—2'%,

1.

2.

ifflSe.ifSOfeSM®.

•

Lengthwise

When

the

reaches
between

be

1.5

mm.

positioning

pointofneedle

upper

surfaceoflooper,

sideofneedle

1.To adjust loosen

spreader

2. Tighten

•

Turn

spreader

when

forwardorbackwardtoget

set

screw ® securely.

Sidewise

machine

positioning

pulley

point and

spreader

point

on

its

downward

the

clearance

and

spreader

set

screw ® and move

and

make

clearance

left

side of looper 0.2 - 0.5 mm

reaches

its

left

point

correct

side

stroke

should

position.

between

end.

•

Height

The

looperatthe

setting

spreader

point should

clearanceof0.5 - 2 mm

1.To adjust loosen two screws ® and move

spreader

2.

Tighten

14

upward or downward to

two screws (Dsecurely.

pass

above

get

upper

correct

side of

position.

17.^^:§^KjiJiS/Adjustingthe thread

guide

n^atBfi5^s^^w.

ffi5^ffa)±?t-.

latiE.

mm

®ife,

• Adjusting

To

increase

the

needle

the

amountofthread

thread

guide

drawnatthe

top

of the needle bar stroke, raise take-up ® or loosen
guide screw and lower the guide

To

decrease

lowering

•

Adjusting

the

the

amount

take-up

the

looper

or

reverse

raising

thread

©.

the

the

guide

adjustment

guide.

i

by

1

8.l3i^J£^0^$S/Adjusting

the

timingbert

To

increase

thread

guide

the

amountofthread,

screw

and

looper

loosen

thread

looper

take-up

rod

screw. Andmove thread guide® and take-up rod

® to

the

ieft To decrease

adjustment

to

the

1.

3.

1. Turn machine pulley toward

barisat

2. Turn

allow markonsafety

opposite

3. Assemble timing

right

safety

by moving

its

highest

clutch pulley toward arm

the

rim on

belttoarm and

the

thread

point

cluth

the

machine bed.

amount reverse

guide

and

take-up

operator

until

shaft

pulley is

directly

safety

cluth

the

needle

until

pulley.

rod

15

© SEIKO SEWING MACHINE CO.,

11-3.

Imado

TEU-i-S

FAX:+8l-3-3873-6596

E-Maii:[e-mail]

www.tctv.ne.]p/seik0001/

1<hoine,Taito-ku,

1-3-3872-6173,4(0verseas group)

Tokyo

111-8534,

LTD.

Japan

Part No.IM60710 (012001)