PREPARATION
FOR
OPERATION
7
Power
cable
connection
1.
Connector
Each
connector
(plug) should be completely set to
the
corresponding receptacle after checking
the
mating
direction.
2.
Lamp
leads
(1) For installation of a work lamp to the sewing
machine,
lamp
leads
are
provided
at
the
back
of
motor.
Remove
the
insulation
tape
and
insulator
from
the
lamp leads and
connect
them
to
the
wires of lamp.
After
the
connection,
be
sure
to
protect
the
con
nected
wires
with
insulation
tape.
(2)
For
work
lamp, use
that
of 6V 15—20W.
(3) When lamp is not used, properly insulate two lamp
leads.
3.
Power
cable
Lamp
leads
(The
power
cable
connection
is
same
as
standard
clutch
motor
cable
connection.)
(1)
When
a three-phase motor
is
used,
connect U
phase
to the red lead,V
phase
to the whitelead,and W
phase
to
the
black lead. The green lead should be grounded
to
the
"GND"
terminal
without
fail.
(2) The
power
fuse
shouldbethat
having
a
rating
of 1
OA
for
three-phase
powersource,and20Afor
single-phase
power
source.
(3) The fuse used in the control box should be that havinga rating of 8A.
4.
Direction
of
rotation
Direction of rotation of the motor can be reversed by inverting the phase reversing plug in
the
motor end
cover
(remove
the
plug,
turn it
180®
and
setto the
plug
socket
again).
For single-phasemotor, operate the switch after the motor has completelystopped (it will take
about
2 min).
Be sure to fully set the plug in
the
socket.
8
Adjustment
of
needle
bar
stop
position
When the pedal is kicked down by heel, the machine stops with the timing mark positioned in line with
the
first
timing
mark
(§)
on
the
balance
wheel.
All
sewing
machines
have
been
factory-adjusted.
However, if the timing marks deviate larger than 3mm from each to other, adjust light shielding disc position
as
follows:
(Preparation for adjustment)
1.
Disconnect
the
plug
(12
pins) of
cable
led
from
the
machine
head.
2. Remove
the
synchronizer
cover.
3.
Run
the
machine
and
stop
with
the
needle
at
UP
position. After
the
completion of
the
preparation,
start
the
following
adjustment:
(Adjustment)
1. While holding
the
light shielding disc by
one
hand,
loosen
set
screw
A
and
turn
the
balance
wheel
to
bring
the
timing
mark
(|)
in
line
with
timing
mark
© .
After
the
adjustment,
be
sure
to
tighten
the
set
screw.
2.
Repeat
pedaling
operation
(toe
down
and
heel
down)
several
times
to
make
sure
the
needle
can
stop
exactly
at
all
times.
3. Then set the plug (12 pins) coming from the machine
head
into
the
receptacle.
First
timing
mark
(white)
Light shielding
disc
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