English
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12. 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 2
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.
Table 2
Display lamp flashing
Cause
Solution
Flash
Internal temperature has risen
beyond the unit’s specified
temperature (Temperature
increase protection function)
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.
Flash
Excessive pressure applied to the
tool has resulted in an overload.
(Overload protection function)
Press the impact rate selector
switch to recover. Try to avoid
tasks that will apply excess
pressure to the unit.
Flash
1
Tool fails to startup or has
shut down due to the unit
being connected to a power
source whose voltage is either
too high or too low.
2
Tool has shut down due to
a voltage signal read error
that occurred from the unit’s
power cord being plugged in
and out at short intervals.
(Circuit protection function)
1
Connect the unit to a power
supply matching the input
voltage specified on the
nameplate. Press the impact
rate selector switch to
recover.
2
Allow for an interval of 3
seconds or more when
plugging the power cord in
and out. Press the impact rate
selector switch to recover.
Flash
Sensor signal read error. (Control
monitoring function)
Press the impact rate selector
switch to recover. Repair may be
required if this error continuously
occurs.
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.
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2017/04/17 14:25:47
2017/04/17 14:25:47