INSTRUCTION MANUAL
LK3-B448E / BA-16
Please read this manual before using the machine.
Please keep this manual within easy reach for quick reference.
ELECTRONIC LOCKSTITCH BUTTON SEWER WITH BUTTON
FEEDER
DANGER
Wait at least 5 minutes after turning off the power switch and disconnecting the power cord from the wall outlet before
opening the face plate of the control box. Touching areas where high voltages are present can result in severe injury.
CAUTION
Environmental requirements
The ambient temperature should be within the range
of 5°C to 35°C during use.
Temperatures which are lower or higher than this
Use the sewing machine in an area which is free from
sources of strong electrical noise such as high-
frequency welders.
Sources of strong electrical noise may cause
problems with correct operation.
may cause problems with correct operation.
The relative humidity should be within the range of 45% to
85% during use, and no dew formation should occur in any
devices.
Excessively dry or humid environments and dew for-
mation may cause problems with correct operation.
Any fluctuations in the power supply voltage should
be within ±10% of the rated voltage for the machine.
Voltage fluctuations which are greater than this
may cause problems with correct operation.
Avoid exposure to direct sunlight during use.
Exposure to direct sunlight may cause problems
with correct operation.
The power supply capacity should be greater than the
requirements for the sewing machine’s electrical
consumption.
Insufficient power supply capacity may cause
problems with correct operation.
In the event of an electrical storm, turn off the power
and disconnect the power cord from the wall outlet.
Lightning may cause problems with correct operation.
Installation
Machine installation should only be carried out by a
qualified technician.
All cords should be secured at least 25 mm away from
any moving parts. Furthermore, do not excessively
bend the cords or secure them too firmly with staples,
otherwise there is the danger that fire or electric shocks
could occur.
Contact your Brother dealer or a qualified electrician
for any electrical work that may need to be done.
The sewing machine weighs more than 47 kg. The
installation should be carried out by two or more people.
Install the belt covers to the machine head and motor.
Do not connect the power cord until installation is
complete, otherwise the machine may operate if the
foot switch is pressed by mistake, which could result
in injury.
If using a work table which has casters, the casters
should be secured in such a way so that they cannot
move.
Hold the machine head with both hands when tilting it
back or returning it to its original position.
Furthmore, after tilring back the machine head, do not
push the face plate side or the pulley side from above,
as this could cause the machine head to topple over,
which may result in personal injury or damage to the
machine.
Be sure to wear protective goggles and gloves when
handling the lubricating oil and grease, so that they do
not get into your eyes or onto your skin, otherwise in-
flammation can result.
Furthermore, do not drink the oil or eat the grease
under any circumstances, as they can cause vom-
iting and diarrhoea.
Be sure to connect the ground. If the ground connec-
tion is not secure, you run a high risk of receiving a
serious electric shock, and problems with correct
operation may also occur.
Keep the oil out of the reach of children.
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CAUTION
Sewing
This sewing machine should only be used by opera-
tors who have received the necessary training in safe
use beforehand.
If using a work table which has casters, the casters
should be secured in such a way so that they cannot
move.
The sewing machine should not be used for any
applications other than sewing.
Attach all safety devices before using the sewing
machine. If the machine is used without these devices
attached, injury may result.
Be sure to wear protective goggles when using the
machine.
If goggles are not worn, there is the danger that if a
needle breaks, parts of the broken needle may enter
your eyes and injury may result.
Do not touch any of the moving parts or press any
objects against the machine while sewing, as this may
result in personal injury or damage to the machine.
If an error occurs in machine, or if abnormal noises or
smells are noticed, immediately turn off the power
switch. Then contact your nearest Brother dealer or a
qualified technician.
Set the needle to the needle up stop position before
turning on the power.
If this is not done, the wiper may strike the needle,
which might cause the needle to break.
If the machine develops a problem, contact your
nearest Brother dealer or a qualified technician.
Turn off the power switch at the following times,
otherwise the machine may operate if the foot switch
is pressed by mistake, which could result in injury.
• When threading the needle
• When replacing the needle and bobbin
• When not using the machine and when leaving
the machine unattended
Cleaning
Be sure to wear protective goggles and gloves when
handling the lubricating oil and grease, so that they do
not get into your eyes or onto your skin, otherwise in-
flammation can result.
Set the needle to the needle up stop position before
turning on the power.
If this is not done, the wiper may strike the needle,
which might cause the needle to break.
Furthermore, do not drink the oil or eat the grease
under any circumstances, as they can cause vom-
iting and diarrhoea.
Turn off the power switch before carrying out cleaning,
otherwise the machine may operate if the foot switch
is pressed by mistake, which could result in injury.
Keep the oil out of the reach of children.
Maintenance and inspection
Maintenance and inspection of the sewing machine
should only be carried out by a qualified technician.
Hold the machine head with both hands when tilting it
back or returning it to its original position.
Furthermore, after tilting back the machine head, do
not push the face plate side or the pulley side from
above, as this could cause the machine head to topple
over, which may result in personal injury or damage to
the machine.
Ask your Brother dealer or a qualified electrician to
carry out any maintenance and inspection of the
electrical system.
Set the needle to the needle up stop position before
turning on the power.
If this is not done, the wiper may strike the needle,
which might cause the needle to break.
Use only the proper replacement parts as specified by
Brother.
If any safety devices have been removed, be abso-
lutely sure to re-install them to their original positions
and check that they operate correctly before using the
machine.
Turn off the power switch and disconnect the power
cord from the wall outlet at the following times,
otherwise the machine may operate if the foot switch
is pressed by mistake, which could result in injury.
Any problems in machine operation which result from
unauthorized modifications to the machine will not be
covered by the warranty.
• When carrying out inspection, adjustment and
maintenance
• When replacing consumable parts such as the
rotary hook
If the power switch needs to be left on when carrying
out some adjustment, be extremely careful to observe
all safety precautions.
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