Maintenance And Inspection - Brother DH4-B981 Instruction Manual

This sewing machine should only be used by opera-
tors who have received the necessary training in safe
use beforehand.
The sewing machine should not be used for any
applications other than sewing.
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.
Turn off the power switch at the following times,
otherwise the machine may operate if the start switch
is pressed by mistake, which could result in injury.
• When threading the needle
• When replacing the needle
• When not using the machine and when leaving the
machine unattended
Turn off the power switch before carrying out cleaning,
otherwise the machine may operate if the start switch
is pressed by mistake, which could result in injury.
Maintenance and inspection of the sewing machine
should only be carried out by a qualified technician.
Ask your Brother dealer or a qualified electrician to
carry out any maintenance and inspection of the
electrical system.
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 start switch
is pressed by mistake, which could result in injury.
• When carrying out inspection, adjustment and main-
tenance
• When replacing consumable parts such as the
loopers and knife
Disconnect the air hoses from the air supply and wait
for the needle on the pressure gauge to drop to "0"
before carrying out inspection, adjustment and repair
of any parts which use the pneumatic equipment.
iii
CAUTION
Sewing
Cleaning

Maintenance and inspection

DH4-B981
If using a work table which has casters, the casters
should be secured in such a way so that they cannot
move.
Attach all safety devices before using the sewing
machine. If the machine is used without these devices
attached, 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 operation, or if abnormal
noises or smells are noticed, immediately turn off the
power switch. Then contact your nearest Brother dealer
or a qualified technician.
If the machine develops a problem, contact your
nearest Brother dealer or a qualified technician.
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 un-
der any circumstances, as they can cause vomiting
and diarrhoea.
Keep the oil out of the reach of children.
If the power switch and air need to be left on when
carrying out some adjustment, be extremely careful to
observe all safety precautions.
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.
Any problems in machine operation which result from
unauthorized modifications to the machine will not be
covered by the warranty.