7
Periodical cleaning
1 . Machine
2 . Motor
Remove dust from the motor filter every one or two months. (Continued operation with the filter
clogged with lint or dust may overheat the motor.)
3 . Control Box
Remove dust from the connector. (If the connector is covered with dust, the machine might
malfunction.)
8
Precaution for the built-in type
detector
1 . Since the optical type detecting element
is used in the detector, prevent dust or oil
from sticking to the detecting plate when
the sewing machine pulley is removed for
adjustment.
If they have stuck, wipe them off with
soft cloth carefully so that the surface is
not scratched, do not let oil permeate the
clearance on the detecting plate.
2 . In case of disconnection of the position
detector connector, running off the belt
or complete constraint and over load, the
motor is automatically turned off after
predetermined time to prevent burning of
the motor. (However, in case of half-constraint
and over load, the power may not be turned
off.) After the failure is eliminated, the normal
operation is resumed by turning off the power
once then turning on again.
The same operation occurs for the detector
malfunction or the line breakage.
9
Installation of the belt cover
1 . Install the belt cover on the machine side
for safety. Refer to the provided instruction
document contained in the same package.
2 . Install the belt cover on the motor side for
safety.
:
Precaution on operation
( 1 ) When the power is turned on or off, keep foot
away from the pedal.
( 2 ) It should be noted that the brake may not
work when the power is interrupted or
power failure occurs during sewing machine
operation.
( 3 ) Since dust in the control box might cause
malfunction or control troubles, be sure to
keep the control box cover close during
operation.
( 4 ) Do not apply a multimeter to the control
circuit for checking, otherwise voltage of
multimeter might damage semiconductor
components in the circuit.
USAGE PRECAUTION
Hook
Feed dog
Hook
Feed bar
Oil pump screen
● Remove the throat plate and
clean the feed dog. Reassembly
should be done by screwing in
the screw 2-3 rotations by hand
at first, then tightening them
evenly using a long-shafted
screwdriver.
● Lean the machine head and
clean the hook and remove
any dust and/or lint inside the
bobbin case.
● Lean the machine head and
remove any dust and/or lint on
the oil pump screen.
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