HIGHLEAD GC20818-MD Manual de instrucciones

Customer

Service

Copy

Basting Machine

Instruction al

a t Cata

SHANGHAI HUIGONG

N0.3

SEWING MACHINE FACTORY

From the library of: Superior Sewing Machine & Supply LLC

•

CAUTIONS

USE

Cautions on operation

When the power

turned on and off, keep your foot away from the

pedal

Note that the needle goes up

the UP position when the power switch is turned

on.

Note that braking does not work

the power is turned off, or power failure takes place, during machine

operation.

Since dust or other foreign matter entering into the control box may cause malfunction or trouble, be

sure

keep control box cover closed during operation.

not use a multimeter to check the control circuit. Otherwise, semiconductors in the control circuit

might be damaged by voltage from the multimeter.

Precautions before

starting

operation:

I ) Never operate the machine before filling the machine's oil pan.

When a new sewing machine is first turned on, verify the rotational direction

the pulley with the

power 0

V'!ri

the voltage and phase (single

three) with those given on the machine nameplate.

autions for operating conditions:

A\Olcl

us'ng the machine

abnormally high temperatures (

'C or higher) or low temperatures (5

·c

or lower) .

Avoid

using the machine in dusty conditions.

Connection

contro box

The control box should be connected

shown

the right.

Note:

(I)

Be sure

turn the power switch

off

for safety before connecting or disconnecting the connectors.

(2) The combination

the machine heads with the motor control panels are specified below. Use special

care

for

the correct combination when replacing the machine head or motor control panel.

INMe

mark

pos1110n

Black mark

DOWN

posit

S.Adjustment

needle

bar

stop position

Adjust

of"UP"

position: When the pedal

kicked down by heel, the machine stops

"UP" position.

-1-

From the library of: Superior Sewing Machine & Supply LLC

the marks deviate larger than 3 nnn, adjust

follows.

(

Disconnect the plug (12 pins)

cable from the

machine head.

(

Run the machine and stop

"UP"

position.

(3)

While holding the pulley, insert the "adjusting ®

tool"

the hole "A", then remove the tool.

Adjust

"Down" position: When the pedal is

"Neutral" the machine stops at "Down" position.

the marks

deviate large than 5 nnn, adjust as follows.

) Disconnect the plug (

pins)

cable from the machi

head.

(

Run the machine and stop

"Down" position.

(

While holding the pulley, insert the "adjusting tool" in the hole "B", then remove the tool.

Confirm the stop operation, then set the plug (12 pings) coming from the machine head into the

receptacle.

•

CAUTIONS

ON USE:

1, Lubrication(!)(Fig.4)

Pour oil

position

"H"

the oil tank.

During operation, check the oil level periodically, and in

cases where the oil level

below position "L", replenish the oil

supply

position

"H"

Use

white spindle oil.

Lubrication (2)(Fig.5)

When a new sewing machine

used for the first time, or sewing machine left out

use·for a long time

used again, replenish a suitable amount

oil

the portions indicated

arrow in the fig.

Note: Lubricate the Hook Base everyday.

0 1-2

drops

- 4

drops

Adjustment

oiling to rotating

hook( Fig.6 )

-2-

From the library of: Superior Sewing Machine & Supply LLC

OPERATION

1, Attaching the needle(Fig.7)

1 ) For needle, use'

"Mt

X 190"

2 ) Determine the needle gauge for thickness Ifthread used.

3 ) Loosen the needle clamp screw.

4 ) Hold the needle with the prime groove turned

the front and

put it into the needle socket until it stops.

5 ) Tighten the needle clamp screw.

Winding the

bobbin

thread(Fig.8)

Threading the machine(Fig.9)

The needle should

threaded in the order numbered in the right figure.

Setting ofbobbin(Fig.lO)

1 ) Put the bobbin into the bobbin case in the direction that the bobbin

in the bobbin case rotates clockwise, viewed from the front, when the thread

pulled.

2 )

Pass

the thread through slit

bobbin case and pull. The

thread will be led out from aperture

®.

*The bobbin should rotate in the direction shown by arrow in the

tigure when the thread

pulled.

Leading

out

the

bobbin

thread(Fig.

11)

I ) Put the bobbin and bobbin case together into the hook, as shown in

the right figure.

Pick

the end

needle thread

left hand and lightly press down

the pedal by toe

run the machine one turn. When the needle thread is

pulled

up,

the bobbin thread will

drawn out

shown in the right figure.

-3-

From the library of: Superior Sewing Machine & Supply LLC

6..

Thread

tension (Fig.12)

7" Bobbin

thread

tension

adjustment(

.Fig.13)

0 Balance tension Tight needle or

loose bobbin

tension

Needle thread tension

adjustl!'~dt

Loosen needle

tight bobbin

tension Loosen

'J)Tighten

Bobbin tension

adjusting screw

The needle thread tension can

adjusted

changing presstrre

the tension disk, and force and stroke

the thread take-up spring.

1) Tension disk presstrre adjustment (Fig.

l4)

(1) In most cases, thread tension can by properly adjusted only by changing tightness

the tension

regulator thmnb nut.

(2)

increase presstrre, ttrrn the nut clockwise.

(3)

decrease pressure, ttrrn the nut counter-clockwise.

Thread take-up spring force/stroke adjustment

(Fig

.15)

Apply a scre\vdriver to the thread take-up spring stud and ttrrn the stud. Spring

rce increases when the

screwdriver

ttrrned counter-clockwise, and decreases when ttrrned clockwise.

the stud is tight, remove the

face plate and loosen the screw

tension regulator slightly.

3) Thread take-up spring force/stroke adjustment ( Fig.

)

Loosen the stop screw, adjusting the stopper block, After the adjustmen

be sure

tighten the set screw.

The standard stroke

thread take-up spring

from 6mrn

8nm1

Adjustment

thread

tension regulator (Fig.

16)

-4-

From the library of: Superior Sewing Machine & Supply LLC

1) Adjustment

thread tension regulator setting position. The

standard gap

about 0.5mm when the tension release cam salience is in

contact with the tension release pin.

adjust, loosen screw A and change

position

the thread tensionregulator properly.

2 ) Tension release timing adjustment The tension release

cam

should

set so that the tension release disks come to close at the time the

needle plunges into the throat plate.

10,

Presser foot pressure

adjustment

(picture

17)

Loosen the pressure adjusting screw lock nut and turn the pressure

adjusting screw

®.

Turn the screw clockwise

increase the pressure.

Turn the screw counter-clockwise

decrease the pressure.

Note: Do not change setting

screw

the

screw is too tight,

clapping noise may

occur

during

operation.

, Adjustment

presser foot height

(picture

17)

l ) Height

presser foot

'i'.>'!

tandard

height

the presser foot at its lowest position is 1.0

mm 1

eas

between the presser foot bottom surface and the throat plate

top

surface (sec the detail

part "A").

adjust the height

the presser foot, loosen the set screw ® used

secure the presser

bar

guide bracket and vertically move the presser bar.

2 ) Stroke

presser foot

loosen screw

and adjust position

presser

bar

lifting bracket so

that the presser foot starts going up when the needle point reaches

0.5mm-l.Ommabove the presser foot bottom surface.(When this

adjustment

made, the height

the presser foot at stop

the machine is

about 26.5nnn over the throat plate.)

12,

Timing

hook

and

needle(Fig.18)

1 ) When the needle

at 2.2mm above its lowest position, the

hook and the needle should

located as described below.

•

The

upper

edge

needle eye is 1.3mm below

the

hook

tip.

•

The

clearance

between

the

hook

tip

and

the

needle side

surface is 0.05mm.

The relative positions

the hook and the needle can

adjusted

described below.

-5-

screw®

Loosen

.;-:.

Tighten

1010.---<ID

Throat

plate

0.0511111

Center

needle

From the library of: Superior Sewing Machine & Supply LLC

*The adjustment

easier when the presser foot and the throat plate are previously removed.

• Ad.iustment of hook tip position (Fig.19)

Lean outward the machine head. Loosen three hook shaft gear

screws.

Rotate the balance wheel by hand

position the needle to

2mm

above the needle DOWN position.

Rotate the hook by hand to align the hook tip with the center

the needle.

Adjust the lateral position

the hook saddle so that the

clearance between the hook tip and the needle side surface is 0.05mm.

adjust, loosen screws

CD,

® and

®.

Note:

Use

care not to loosen set screw ® excessively, and not to disengage the hook shaft gear (small)

from the gear (large).

Tighten the loosened screws

the following order:

3) Lightly press the gear (large) against the side wall

hook saddle and tighten set screw ® first.

4) Check the clearance between the needle and the hook and then tighten screw

Finally tighten screw

®.

13, Timing between hook motion

and

take-up lever motion(Fig.20)

When the toothed belt

removed for replacement, the timing

between the hook motion and the take-up lever motion should be

adjusted

follow:

1 ) Turn the balance wheel

land to locate the take-up lever to its

highest position.

2 ) Lean outward the machine head

make sure the arrow mark

(timing mark) on the toothed belt pulley meets the black line put on the

bearing bracket.

Toothed

/ - ..GASr-11tT belt

Arrow

mark

3 )

the arrow mark

not in line with the black line, remove the toothed belt and install again so that the

two marks are

line, as shown in the right figure.

14, Timing between hook motion

and

opener motion(Fig.21)

l ) Rotate the balance wheel by hand to locate the opener holder to

the

farthest position away from the throat plate.

2 ) Make sure the clearance between the portion

bobbin case

and the opener is about 0.2mm as shown in the right figure.

3 )Ifthe clearance is too large or small, loosen opener screw ® and

adjust position

the opener.

-6-

From the library of: Superior Sewing Machine & Supply LLC

• ADJUSTMENT

THREAD TRIMMER

1, Installation

movable knife (Fig.22)

Initial position

movable knife

Rotate the balance wheel

lower the

needle

the DOWN position

b , While keeping the DOWN position,

press the cam follower crank to enter the roller

into the trimmer camgroove.

c , Rotate the balance wheel until the black

mark point on the arm meets the white mark

Rocker

crank-

point on the balance wheel. In so doing, care should

taken not to allow the

cam

roller to leave the cam groove

(use) a screwdriver,

any other suitable tool).

d , Loosen bolt

the rocker arm

e , Adjust the movable knife so that its tip protrudes by 3-3.5mm from the fixed knife blade edge, as shown

btl

Alter the adjustment, tighten bolt

CD.

2) Ck anmcc between the movable trinnuer knife and the hook (Fig.23)

a , Rotate the balance wheel to lower the needle

the DOWN position

b , While keeping the DOWN position, press the cam follower and

tum

the

balance wheel by hand in the farthest position.

c , Rotate the hook by hand in the directions shown

arrows in the right

and adjust the clearance between the movable knife and the hook to about

0.2nnn(loosen screws

and ®

adjust).

Adjustment

trimmer cam (Fig.24)

I) Rotate the balance wheel

lower the needle

the DOWN position

2) While keeping the DOWN position,

press the cam follower crank to enter the roller

into the trinnner cam groove.

3) Adjust the trimmer

cam

so that the

movable knife starts moving when the balance

wheel

turned

hand and the green mark

point on the balance wheel meets the black point

on the

ann

adjust loosen two trimmer cam screws

Cam groove

-7-

0.2mm

From the library of: Superior Sewing Machine & Supply LLC

Adjustment

scissoring pressure

thread

trimmer

(Fig.25)

( 1) Loosen bolt A used to secure the fixed knife base.

(

Turn fixed knife vertical position adjusting screw 8 to adjust the scissoring pressure. After the

adjustment, tighten bolt

Note:

The

pressure

should

adjusted

minimum

possible. Excessive

pressure

causes

over-torque to

the

trimmer

mechanism,

and

trimming

failure.

(3) Move the movable trirruner knife to make sure threads are cut successfully.

Fixed knife

base

Sharpening the fixed knife(Fig.26)

Ifthe fixed knife becomes dull, sharpen it as shown

the figure below.

Since it

impossible to sharpen the movable "knife, replacement with a new one is required when the

movable knife becomes dull.

-8-

From the library of: Superior Sewing Machine & Supply LLC

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