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2 Notes on safety
● Wait at least 10 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.
● 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.
● 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.
● 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.
● The ambient temperature should be within the
range of 5°C to 35°C during use.
Temperatures which are lower or higher than
this may cause problems with correct operation.
● Machine installation should only be carried out
by a qualified technician.
● Contact your Brother dealer or a qualified electri-
cian for any electrical work that may need to be done.
● The sewing machine weighs more than 36 kg.
The installation should be carried out by two or
more people.
● Do not connect the power cord until installation
is complete, otherwise the machine may oper-
ate if the treadle is depressed by mistake, which
could result in injury.
● Be sure to connect the ground. If the ground
connection is not secure, you run a high risk of
receiving a serious electric shock, and problems
with correct operation may also occur.
● When securing the cords, do not bend the cords
excessively or fasten them too hard with staples,
otherwise there is the danger that fire or elec-
tric shocks could occur.
DANGER
CAUTION
Environmental requirements
Installation
DB2-DD7100A(English)
● 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
formation may cause problems with correct opera-
tion.
● Avoid exposure to direct sunlight during use.
Exposure to direct sunlight 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 out-
let.
Lightning may cause problems with correct opera-
tion.
● If using a work table which has casters, the cast-
ers should be secured in such a way so that they
cannot move.
● Use both hands to hold the machine head when
tilting it back or returning it to its original posi-
tion. If only one hand is used, the weight of the
machine head may cause your hand to slip, and
your hand may get caught.
● Be sure to wear protective goggles and gloves
when handling the lubricating oil, so that no oil
gets into your eyes or onto your skin, otherwise
inflammation can result.
Furthermore, do not drink the oil under any cir-
cumstances, as they can cause vomiting and di-
arrhoea.
Keep the oil out of the reach of children.
● Use a lamp which is rated at 6 V AC and 20 W or
less. If a lamp with a higher rating than this is
used, it could cause the lamp wires and the
transformer to overheat and burn out, which
could result in fire.
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