Crown CT18221 Original Instructions Manual page 17

Notice the supply power voltage: in power con-
nection, be sure to note whether the power supply
voltage is the same as that labeled on the tool name-
plate� When the power supple voltage is higher than
the voltage applicable to the tool, an accident will
happens to the user and meanwhile the tool itself will
be destroyed� Therefore, in case of the failure to con-
firm the power supply voltage, never plug in arbitrar-
ily� On the contrary, when the power supply voltage
is lower than that needed for the tool, the motor will
be damaged�
Safety guidelines during power tool
operation
All instructions have to be read� In case of
using the machine not in accordance with
the following provisions, electric shock, fire
or serious injury may occur�
• Check that the chisel has been clamped in proper
position or not prior to operation�
• Power tool working will generate vibration and you
should carefully confirm that screws in different places
still are tightened or not prior to operation�
• Wear blinder in operation to protect eyes�
• Maintain the keenness of the chisel so as to achieve
the optimum and safest efficiency.
• When replace or assemble the accessories, the op-
eration must follow the instructions of the accessory
strictly�
• If the productor has any problems, you must not try
to repair personally, please take it to the local assigned
maintenance center for inspection�
• Fix the workpiece as far as possible� The workpiece
shall be fixed with fixing device or pincer pliers, which
shall be fastness than holding the piece in hand�
• Before powered on, the switch must be confirmed in
"off" position; before you put down the power tool, it must
be turned off and the power plug must be pulled out�
• When the accessory is totally static, then the power
tool can be put down�
• Never let the power wire touch the chisel or sur-
rounding parts in operation, or the power wire may be
damaged� The power tool with broken wires must not
be used� If the power wire is damaged in the work-
ing, then the damaged wire must not be touched, and
the plug must be pulled out immediately� The dam-
aged wire shall increase the danger of user's electric
shock�
• Chiseling walls, floors or on similar occasions, pay
attention to keep away from gas, tap water pipeline
and electric wire and operating tools in those places
shall keep away from touching metal parts� The appro-
priate detector shall be used so as to find out the loca-
tion of the concealed power wire� Or you can require
the relevant data from the local power supply entity�
The wires that are damaged shall result in the fire and
electric shock� The damaged gas pipe will resulted in
the explosion� If the water pipe is damaged, the prop-
erty loss will be caused�
• If the accessory installed on the power tool gets
clamped, the power tool must be turned off immedi-
ately and stay calm� At the time, the power tool will
generate ultra-high reaction torque, and result in the
return stroke� The accessory installed on the power
tool is easy to be clamped, like: the power tool is in
hypercharge, or the accessory installed on the power
tool inclines in the workpiece�
• The concealed electric wire or the power wire of the
power tool may be cut off in operation, and then the in-
sulated handle must be held to operate the power tool�
If the power tool contacts the charged circuit, then the
metal parts on the power tool shall conduct electricity,
and the operator may have electric shock�
• Two handles of the productor must be held with both
hands tightly in operation, and the base must be sta-
ble� Both hands can hold the power tool stably; one
hand operation must be avoided�
• Only when you wear gloves then you can touch the
chisel, it will be hot in operation, and it is easy to get
burn� Never immediately touch the chisel or parts around
it upon the end of work, for those parts will be scalding
and scald your skin� Wear gloves and middle rest can re-
duce the vibration and the injury to the hands and arms�
• Hands and body must not be placed between the
power tool and the wall or column so as to prevent the
power tool from flying off when the chisel gets blocked.
• In case using extended power wire, please use dou-
ble insulation power wire with the same specification
as the power tool�
• Avoid stopping an power tool motor when loaded�
• Never remove any chips or fragments with your
power tool's motor running�
• Never change the chisel design or use attachments
and appliances, which are not recommended for your
power tool�
• When working, never press the power tool too hard,
as this might lead to the chisel seizing and motor over-
loading�
• Avoid the chisel seizing in the material worked in�
If this happens, do not try to release them with your
power tool motor� It may damage the motor�
• Never force out the chisels stuck in the material you
are working on with a hammer or other objects the
chipped off metal particles may harm both the operator
and the persons who are nearby�
• Avoid overheating your power tool, when using it for
a long time�
• During operation, especially on slippery or uneven
surfaces as well as when working near cliffs, slopes,
or at elevated conditions, it is necessary to exclude the
possibility of falling of both the operator and the power
tool (fencing structures or preventers must be used)�
• In the course of the operations related to the destruc-
tion of building structures, it is necessary to perform the
correct assessment of the impact of such operations
and to take necessary safety measures� For example,
choose the correct place for work and consider escape
routes depending on the debris falling direction�
Warning: the chemical substances con-
tained in dust generated in sanding, cut-
ting, sawing, grinding, drilling and other
construction industry activities may
result in cancer, congenital deficiency or be harm-
ful to the fertility. The ion of some chemical substanc-
es shall be:
• before any repair and replacement work to
the machine, the power plug must be pulled out
firstly;
• the transparent two silicon oxide and other ma-
sonry products in the wall bricks and cement; the
chromium arsenic (CCA) in wood with chemical
treatment� The harm degree of these substances
shall depend on the frequent degree of you carrying
English
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