Highlead GC0388, GC0388-D User Manual
Purchasing
Copy
Dept
HIGH
GC0388-D/GC0388
HEAVY DUTY
LOCKSTITCHER
LEAD
TOP
WITH
TRIMMER
AND
AUTOMATIC THREAD
BOTTOM
,
FEED
Instruction
Manual
Parts Catalog
SHANGHAI HUIGONG
N0.3
SEWING MACHINE FACTORY
CONTENTS
!.Instruction Manual
1,
SAFETY PRECAUTIONS
2,
PRECAUTIONS BEFORE STARTING OPERATION
3,
PRECAUTIONS
4,
SPECIFICATIONS
5,
POWER
6,
CONNECTION OF CONTROL
7,
INSTALLING THE BELT
8,
ADJUSTMENT OF NEEDLE
9,
INSTALLING THE
10,
LUBRICATION
11,
CONDITION OF OIL LUBRICATION
12,
ADJUSTMENT OF
13,
ADJUSTMENT
14,
PERIODICAL CLEANING
15,
HANDLING INSTRUCTIONS (MOTOR AND CONTROL BOX)
16,
INSTALLATION OF BELT COVER.
17,
HOW TO WIND THE
18,
HOW TO ATTACH A
19,
HOW TO ROUTE
20,
ADJUSTMENT OF STITCH LENGTH AND REVERSE SEWING
21,
ADJUSTING THE
22,
UPPER THREAD TENSION
23,
LOWER THREAD TENSION
24,
ADJUSTMENT OF PRESSER PRESSURE
25,
FEED DOG HEIGHT
26,
ADJUSTMENT OF
27,
ADJUSTMENT OF STITCH LENGTH AND FORWARD/BACKWARD
28,
PRESSER BAR LIFTER.
29,
ADJUSTMENT OF WALKING FOOT AND PRESSER FOOT
30,
ADJUSTMENT OF
31,
ADJUSTMENT OF
CABlE
FOR
.........................................................................................................
CONNECTION
KNEE
............................................................................................................
OF
....................................
OPERATING CONDITIONS
.......................................................................................
BOX
....................................................................................
.................................................................................................
BAR
STOP POSITION
LIFTER
THE
HOOK
OIL PUMP
LOWER
NEEDLE
THE
UPPER THREAD
THREAD
....................................................................................................
FEED
DOG INCLINATION
...............................................................................................
FEED
TIMING
THREAD
......................................................................................
.................................................................................
LUBRICATION
.........................................................................................
..............................................................................................
....................................................................................
THREAD
.......................................................................................
TENSION
...........................................................................................
..........................................................................................
TRIMMER MECHANISM
............................................................................
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:
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3
3
3
.4
.4
5
6
6
7
7
7
8
8
8
9
9
1 0
10
11
11
11
12
12
12
13
13
13
14
14
16
16
2.Parts Catalog
A. ARM BED AND ITS ACCESSORIES
B.
SEWING MECHANISM
C.
SEWING MECHANISM & FEED ROCK LOWER SHAFT
D.
STITCH LENGTH MECHANISM
................................................................................................
E UPPER FEED ROCK SHAFT MECHANISM
F.
UPPER FEED LIFTING
G. PRESSER FOOT MECHANISM
H.
KNIFE ACTUATING MECHANISM
ROCK
.............................................................................
.......................................................
.....................................................................................
........................................................................
SHAFT MECHANISM
.......................................................................................
..................................................................................
...........................................................
-1-
r20
.23
26
29
32
34
37
39
I. TOUCH
J.
OIL
LUBRICATION
K.
ACCESSORIES
BACK
& DETECTOR MECHANISM
MECHANISM
...........................................................................................................
.................................................................................
.....................................................................
42
.44
46
-2-
1...
Safety precautions :
1 ) When turning the power on, keep your hands and fingers away from the area around/under the needle and
the area around the pulley.
2)
Power must be turned
3)
Power must
machine, or when replacing.
4)
Avoid placing fingers, hairs, bars etc., near the pulley, "V" belt, bobbin winder pulley, or motor when
the machine is in operation.
5)
Do
not insert fingers into the thread take-up cover, under/around the needle, or pulley when the machine
in operation.
6)
If
a belt cover, finger guard, eye guard are installed,
devices.
2
...
Precautions before
I)
Never operate the machine before filling the machine's oil pan.
2)
When a new sewing machine
on.
3)
Verity the voltage and phase (single or three) with those given on the machine nameplate.
be
turned
off
when the machine is not in use, or when the operator leaves the seat.
off
when tilting the machine head, installing or removing the
do
not operate the machine without these safety
starting
is
operation:
first turned
on,
verity the rotational direction
"V"
of
the pulley with the power
belt, adjusting the
is
3....
Precautions for operating conditions:
I ) Avoid using the machine at abnormally high temperatures ( 3 5
lower) .
2)
Avoid using the machine in dusty conditions.
OC
or higher) or low temperatures ( 5
OC
or
-3-
4,
Specifications:
s
Material weight Heavy
Max. sewing speed 2,000 rpm
Stitch length
Needle
Thread take-up
Alternating movement
Walking foot alternate
operating system
Feed dog height I.Omm
Needle
foot stroke
Lubrication system
Thread trimmer
Touch back
bar
stroke
Pn~sser
Hook
kver
stroke
By hand
By knee 16.0 mm
GC0388-D GC0388
0-8.0mm
38.0mm
73.0mm
2.0-5.0 mm
Dial
DPX17
6.0mm
Fully rotating Fully rotating
automatic lubrication automatic
Large Large
0
22#
lubrication, (for thread trimmer),
Automatic
X
0
5,
Power cable connection:
1)
Connection to power supply:
Each connector(plug) should be completely set in the corresponding receptacle
checking the connector shape and mating direction.
(
1)
When a three-phase motor is used, connect
phase to the black lead. Motor rotation direction depends
Bare
wire
Lamp leads
Fig.l
''U"
phase to the red lead,
on
the intemal switch setting in the control box.
Insulating tape
(wrap 2 - 3 turns)
Lamp
leads
Fig.2.
of
the control box after
"V"
phase to the white lead,
more
"W"
-4-
Note:
The
green
wire
must
be
connected
motor.
(
2)
The appropriate power fuse capacity is as follows:
Three-phase power source:
Single-phase power source: 100-120V: 15A
2)
Lamp leads
(
1)
When installing a work lamp
control box, strip the wire and connect them appropriately insulating the connections using insulating tape.
Note:
The
power
(
2)
When a work lamp is not used, the lamp lead ends must
that the two leads do not shortcircuit.
Note:
The
work
3 ) Direction
To
change motor rotation direction, remove the rubber cap (see Fig. 3) at the bottom left
cover and push the internal direction selector switch.
Rotation direction has been set to counterclockwise as seen from the motor pulley before shipment.
of
switch
lamp
rotation
200~240V
(6V,
must
be
turned
If
this is not done, the transformer in the control box will
must
not
be
: 1
connected in
to
the
ground
OA
15-20W), remove the insulation from the leads at the back
off
before
connecting
parallel
terminal
be
insulated as shown
to
any
the
lamp.
heater,
in
order
such
to
properly
in
Fig.(l) or Fig.(2) so
be
a!l"-3
foot
warmer.
of
ground
burned.
the motor front
of
the
the
Routing
Round
tlole
the
in
table
maching
cords
Fig.3
...
Connection of control box (Fig.3):
6
The control box should be connected
Note:
( 1 ) Be
(
special
sure
to
2)
The combination
care
to
ensure
turn
the
the
power
switch off
of
the
machine
correct
combination
Machine head model Control box model
GC0388-D
as
shown Fig.3.
before
heads
when replacing
connecting
with
the
or
disconnecting
motor
control
the
machine
XC-AM-Al020
XC-AM-B2020
the
panels
head
Fig.4
connectors.
are
specified below. Use
or
motor
control panel.
-5-
7
..
Installing the belt (Fig.4):
1)
Use a V-belt for sewing machine use, type
2)
To
adjust the belt tension, change the motor height by turning the tension adjust nuts so that the belt
15mm
sinks about
If the tension is too low, the speed may not be consistent in the low or medium range, or the needle
not stop in the proper position.
8
..
Adjustment
when depressed by hand at the center
lf
the tension is too high, the motor bearings will deteriorate more rapidly.
of
needle
bar
stop position(Fig5, Fig6, Fig7):
M.
of
the belt span.
may
1 ) Adjustment
When the pedal is kicked down
marks deviate more than 3mm, adjust
( 1 ) Disconnect the plug (12 pins) from the control panel;
2)
Run
(
(3)
While holding the pulley, insert the adjusting tool into the two holes marked '"A", then rotate the pulley.
2)
Adjustment
When the pedal is returned to the neutral position, the machine stops
marks deviate more than 3mm, adjust
1)
Disconnect the plug (12 pins) from the control panel:
(
2)
Run the machine and stop
(
3)
While holding the pulley, insert the adjusting tool into the two holes marked
(
3)
Confirm the stop operation then the plug (12 pins) coming from the machine head into the receptacle.
of
"UP"
position
by
heel to cut the thread, the machine stops in the
as
follows:
the machine and stop in the '·UP" position;
of
"DOWN"
position
as
in
the
follows:
"DOWN"
position;
"UP"
in
the "DOWN" position.
"B",
then rotate the pulley.
3rd mark
position.
If
If
the
the
I
.:
•.
:;~
I
' 1
i
3rd
marl< ,
L
_____
___l__
w.,;;_f
Black
;;;~:'
··oown··
poSition
-----
Fig.5
/Mork
(WHITE)
Fig.7
Mark (BLACK)
-6-
Fig.6
9
._
Installing the knee lifter (Fig.8) :
1)
Pull out the knee lifter shafts (on the right and left)
2)
Install the drive arm on each shaft.
3 ) Set a link between the right and left drive arms to cmmect them.
4)
Install the knee lifter lever on the left drive arm.
Collar ---··--
as
far as possible, and properly set them.
Knee lifter lever
····
Fig.8
10..
Lubrication (Fig.9):
Pour oil up to position
During operation, check the oil level periodically, and in cases where
replenish the oil supply up to position
Usc white spmdle oil.
"A"
of
the oil tank.
"A".
Shoulder screw
Link
t};e
Oil check
oil level is below position "B".
window
(~)
®
removing
screw
Oil
Fig.9
1L
Condition of oil lubrication (Fig.lO):
While operating the machine, check the condition
of
oil lubrication through the oil check window.
-7-
Fig.l
12-.
Adjustment
of
the hook lubrication (Fig.11):
Adjustment can be done
C I ) When the screw has been fully tightened . . . . . . Maximmn
3)
When the screw has been fully loosened
C
Note: After adjustment of this screw, the machine should be operated for
oil
check the
mist from the hook.
by
turning screw "A".
Decrease Increase
......
MaximUll1
Adjusting plate
Fig.11
13-.
Adjustment
of
oil pump
(00
12):
at
By·pass hole
Fig.12
least 30 seconds, then
The standard aqjustment is as follows:
The adjusting plate keeps the bypass hole fully closed.
appropriately.
14-.
Periodical
Clean the feed dog, hook and oil pmnp periodically.
Maintenance
Control box: Remove dust from the connector.
Feed
deaning
of
motor: Remoye dust from the motor filter every one or two months.
dog
(Fig.13, Fig.14, Fig.15):
"-
Hook
Hook
Feed
To
decrease splashing, open the bypass hole
dog
base
Fig.13 Fig.14
-8-
Fig.15
15-.
Handling instructions (Motor and control
1 ) Keep your feet away from the pedal when turning
the power on or off.
2)
Always turn the power off when leaving your seat.
3 )
The
brakes may fail
or power failure occurs during operation
machine.
4)
The control box cover must be kept closed during
machine operation to prevent misfunction caused by
the entry
multimeter to protect the semiconductor parts from voltage.
the machine head or touching the needle.
ground wire (GREEN). The single-phase motor must
not be wired to a starburst com1ection.
(Fig.l6).
since a high voltage is applied inside the box. (This
plate when the machine pulley has been removed for adjustment.
scratching the plate. Also, care should
of
dirt.
5 ) The control circuitry must not
6)
The power switch must be turned off before tilting
7)
The three-phase motor must be grounded using
8 ) When manipulating the switch in the control box, first turn
If
you have to open the bottom cover, wait for
9)
Usc the motor away from high noise sources such as high-frequency welders.
10)
A suitable capacity is 15A for a single-phase, and lOA for three-phase motor respectively.
11) The detector uses an optical detecting element. Do not allow dirt, dust, oil etc., to attach to the detecting
if
the power is switched off
of
the sewing
be
checked with a
be
taken to avoid oil soaking into the crevices in the plate.
10
is
vital to discharge the built-in capacitors).
box)
(Fig.16):
Rubber plug
Fig.16
off
the power switch, then open the front cover
minutes after the power switch has been turned off,
If
dirty, gently wipe
it
off while avoiding
16...
Installation of belt cover:
Be sure
to
install the belt cover for safety.
-9-
17...
How to wind the lower
thread
(Fig.17):
Strength
Uneven winding:
bobbin.
Winding amount:
wmmd insufficiently, tighten the adjusting screw.
of
winding: Particularly in the case
If
the bobbin is wound unevenly, slide the thread guide toward the le.;s wound portion
When
the bobbin is wound excessively, loosen the adjusting screw. When the bobbin
Winding tension
adjusting screw
Winding amount
adjusting screw
"-
of
nylon or polyester thread, wind the bobbin loosely.
Thread guid
0
Even winding with
an amount 4/5
fully capacity
I
Fig.17
of
is
of
18
...
How
Note: Before attach the needle, be sure to
Note:
to
attach
If
thread snapping occurs during reverse sewing with polyester, it may be avoided by fitting
a needle (Fig.18):.
turn
the power switch off.
the needle with the long groove shifted to the front side. Normally, avoid fitting the needle with the groove
facing backward.
Insert
the
tighten
groove in
needle
the
the
Long groove
facrng to
left ·
_j_
until
screw
needle facing to the left.
the
__
it bottoms. and
keeping
,
the
long
lnsuffrcient insertion
Wrong
direction
X
Fig.l
-
10-
19.,
How to route the
Raise the thread take-up lever to its highest possible position, and route the upper thread in the order
illustrated below.
upper
thread
(Fig.19):
Thread
Thread guide
Thread
take-up
spring
Fig.19
20.,
Adjustment
l )
To
change the stitch length, rotate the stitch length adjusting dial while pressing the
2 ) Pressing the stitch length adjusting lever for reverse stitching.
of
Stitch
length
adjusting
stitch length
dtal
-
and
reverse sewing (Fig.20):
Upper
thread
Push button
guide
"push"
lever.
Fig.20
21.,
Adjusting the
/~
~Well
thread
0
balanced
stitch
tension (Fig.21
£/;J#!
1
):
~
X
ca~
The
upper
lower
thread
thread
X
2:2~.
he upper thread
or lower threarl
IS
is
too tioht
too loose
Fig.21
-
11-
is too
is
too
loosP.
tight
or
22
...
Upper
1 ) The upper thread can be adjusted based on the lower thread tension.
2 ) Adjustment can be done
For special fabric sewing with special thread, the desired tension can
and operating range
thread tension (Fig.22):
by
rotating the thread tension nut.
of
thread take-up spring.
be
obtained by adjusting the strength
Thread tens1on
loose
nut
Fig.22
23-.
Lower
Lower thread tension can be adjusted by rotating scre\v "A".
24
...
Adjustment of presser pressure (Fig.24):
1 ) Pressure should be adjusted according to the material to be sewn.
2)
Pressure on both the walking foot and the presser foot can be adjusted.
3)
Sewing pressure should be adjusted to the minimum required strength.
thread
tension (Fig.23):
Fig.23
2Qmm
Fig.24
-
12-
25-.
Feed dog height (Fig.25):
l)
Feed dog should
2)
To
adjust the
( 1 ) Loosen the screw
(
2)
When aqjustment is completed, tighten the screw "A".
be
l.Omm higher than the throat plate.
dog
height as follows:
"A",
move the feed
bar
upward and do""nward.
Throat plate
"~"'T
Feed dog
26" Adjustment
If
necessary, adjust the inclination according to the material to be sewn as follows:
.
Qmm
1
Feed
lifting
prong
\
Fig.25
of
feed dog inclination (Fig.26):
Position of mark on the
eccentric
~-
€D'
ED•
shaft
Horizontal
'Up
Down
Eccentric shaft
I
I
~
I
~
I
~
I
Feed dog
Front
Fig.26
Standard
Front up
(MAX.)
down
(MAX.)
1 ) Loosen the screw "A".
2 ) Rotate the eccentric shaft clockwise or counterclockwise with screw driver.
3)
Tighten the scre\v "A".
27" Adjustment of stitch length and forward/backward sewing (Fig.27):
1 ) Loosen the set screws located
2 ) Rotate the stitch length adjusting pin until the desired length
reached
decreases the stitch length in backward sewing.
and increases the stitch length in backward sewing.
as
follows:
(
l)
Clockwise: Increases the stitch length
(
2)
Counterclockwise: Decreases the stitch length in forward sewing,
in
the bracket.
in
forward sewing, and
is
Bracket
Fig.27
-
13-
'
St1tch
Lengt~l
adjusting pin
28.,
Presser
bar
lifter (Fig.28):
Rotate the presser
This raises the presser foot.
29.,
Adjustment
l)
Adjustment
( 1 ) The alternating movement on the walking foot and presser foot can
located on the top cover.
(
2)
Face the desired number printed on the dial
printed on the dial represents the possible protrusion
when the alternating movements on these arc evenly set.
(
3)
The alternating movements can
2)
To
change the balance
bar
lifter in the direction
of
walking foot and presser foot:
of
alternating movement (Fig29):
be
readjusted
of
the alternating movements between the walking foot and presser foot (Fig.30):
of
the arrow.
to
the matching mark located on the top cover. The number
of
the walking foot and presser foot from the throat plate
up
to
2.
0-5.
Omm.
Presser bar lifter
Fig.28
be
adjusted by using adjusting dial
Match1ng
mark movement
,c-,~~~'"""
~~~~~;;;b
I
.---1-
II'
I .
i ! i
~---------
1.
t I
Presser foot
~,,,,,
I •
\
'.
\\
~-~-~--~--~-
( 1 )
To
increase the rise
CD
Remove the rubber plug
® Rotate the pulley until the presser foot
® Loosen screw
0)
The built-in spring pulls down the presser foot until it makes contact
the screw "A".
@ After this adjustment, the protrusion
the vertical motion
2
0-5
Fig.29
of
the walking foot and decrease the
"A"
(on the right side)
of
--~----
]L
' \
Qmm
\\
\:·
of
top cover.
the walking foot has been increased by the same distance.
Alternating
7?_
is
of
Rubber plug
Upper feed
shah crank
liftmg
rock
Fig.J,,
ri
;e
ofthe
presser foot:
slightly raised from the throat plate.
vvith
the throat plate. Tighten
the presser foot has been decreased by a set distance. And
-
14-
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