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ABOUT THE PROTECTION
FUNCTION
This tool has a built-in protection circuit for preventing
damage to the unit in the event of an abnormality. Depending
on the nature of the abnormality, the display lamp will fl ash
as shown in Table 1 and the unit will cease to operate. In
such cases, verify the problem indicated by the fl ashing and
take whatever steps are necessary to correct the problem.
NOTE
Repair may be required if the display lamp continues to
fl ash after taking all necessary steps to correct the problem.
If the problem persists, please arrange for repairs.
Table 1
Display
lamp
Cause
fl ashing
Internal temperature
has risen beyond
Flash
the unit's specifi ed
temperature.
(Temperature
increase protection
function)
Excessive pressure
Flash
applied to the tool
has resulted in an
overload.
(Overload
protection function)
Tool is connected
to a power source
Flash
whose voltage is
either too high or
too low.
(Circuit protection
function)
Sensor signal read
Flash
error.
(Control monitoring
function)
GREASE REPLACEMENT
This Demolition Hammer is of full air-tight construction to
protect against dust and to prevent lubricant leakage.
Therefore, this Demolition Hammer can be used without
lubrication for long periods. Replace the grease as described
below.
Grease Replacement Period
After purchase, replace grease after every 6 months of
usage. Ask for grease replacement at the nearest authorized
Service Center.
Solution
Turn off the unit
and allow it to cool
down for about 15 to
30 minutes.
When the temperature
goes down, press the
impact rate selector
switch to recover.
Press the impact rate
selector switch to
recover. Try to avoid
tasks that will apply
excess pressure to
the unit.
Connect the unit to a
power supply matching
the input voltage
specifi ed on the
nameplate. Press the
impact rate selector
switch to recover.
Press the impact rate
selector switch to
recover. Repair may
be required if this error
continuously occurs.
11
MAINTENANCE AND INSPECTION
CAUTION
Be sure to switch OFF and disconnect the attachment
plug from the receptacle to avoid a serious accident.
1. Inspecting accessories
Since use of a dull accessory, such as a bull point, a
cutter, etc. will degrade effi ciency and cause possible
motor malfunction, sharpen or replace with a new one as
soon as abrasion is noted.
2. Inspecting the mounting screws
Regularly inspect all mounting screws and ensure that
they are properly tightened. Should any of the screws be
loose, retighten them immediately. Failure to do so could
result in serious hazard.
3. Maintenance of the motor
The motor unit winding is the very "heart" of the power
tool. Exercise due care to ensure the winding does not
become damaged and/or wet with oil or water.
4. Replacing supply cord
If the replacement of the supply cord is necessary, it
has to be done by HiKOKI Authorized Service Center to
avoid a safety hazard.
CAUTION
In the operation and maintenance of power tools, the
safety regulations and standards prescribed in each
country must be observed.
GUARANTEE
We guarantee HiKOKI Power Tools in accordance with
statutory/country specifi c regulation. This guarantee does
not cover defects or damage due to misuse, abuse, or
normal wear and tear. In case of complaint, please send
the Power Tool, undismantled, with the GUARANTEE
CERTIFICATE found at the end of this Handling instruction,
to a HiKOKI Authorized Service Center.
IMPORTANT
Correct connection of the plug
The wires of the main lead are coloured in accordance with
the following code:
Blue:
— Neutral
Brown: — Live
As the colours of the wires in the main lead of this tool may
not correspond with the coloured markings identifying the
terminals in your plug proceed as follows:
The wire coloured blue must be connected to the terminal
marked with the letter N or coloured black. The wire
coloured brown must be connected to the terminal marked
with the letter L or coloured red. Neither core must be
connected to the each terminal.
NOTE
This requirement is provided according to BRITISH
STANDARD 2769: 1984.
Therefore, the letter code and colour code may not be
applicable to other markets except The United Kingdom.
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