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Hikoki DH40MEY2 Manual

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English
Using Continuous operation button
The Continuous operation button feature is only available
for “Hammering Mode ”. Pressing the Continuous
operation button with the switch trigger pulled back will
switch on a blue LED that indicates the activation of the
Continuous operation function which will keep the tool
running even after the trigger switch is released. (Fig. 8)
To cancel the function, press the Continuous operation
button again. (Fig. 9)
CAUTION
Never allow magnets (or similar magnetic devices) to be
adjacent tool body, because this product has a magnetic
sensor inside. Doing so will cause a failure or risk of
injury by malfunction.
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
fl ashing Cause Solution
Flash
Internal temperature
has risen beyond
the unit’s specifi ed
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
rotation speed selector
switch to recover.
Flash Excessive pressure
applied to the tool
has resulted in an
overload.
(Overload
protection function)
Press the rotation
speed selector switch
to recover. Try to avoid
tasks that will apply
excess pressure to
the unit.
Flash
Tool is
connected to a
power source
whose voltage
is either too high
or too low.
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)
Connect the unit
to a power supply
matching the input
voltage specifi ed
on the nameplate.
Press the rotation
speed selector
switch to recover.
Allow for an interval
of 3 seconds
or more when
plugging the power
cord in and out.
Press the rotation
speed selector
switch to recover.
Flash Sensor signal read
error.
(Control monitoring
function)
Press the rotation
speed selector switch
to recover. Repair may
be required if this error
continuously occurs.
REACTIVE FORCE CONTROL
This product is equipped with a Reactive Force Control
(RFC) feature that reduces jerking of the tool body.
If the tool bit is suddenly overburdened, any jerking of the
tool body is reduced by activation of the slip clutch or by
stopping of the motor by the sensor built into the tool body.
If the motor is stopped because of overburdening detection
by the controller, the Display lamp will blink while the switch
is pulled. In addition, the lamp will continue blinking for
approximately three seconds after the switch is released.
The motor will remain stopped while the lamp is blinking.
(Fig. 16)
Because the RFC feature may not activate or its performance
may be insuffi cient depending on the working environment
and conditions, be careful not to suddenly overburden the
tool bit and hold power tool fi rmly while operating.
● Possible causes of sudden overburdening
Tool bit biting into material
Impact against nails, metal or other hard objects
Tasks involving prying or any excess application of
pressure, etc.
Also, other causes include any combination of the
aforementioned.
● When the reactive force control (RFC) is triggered
When the RFC is triggered and the motor stops, turn
off the tool’s switch and remove the cause of the
overburdening before continuing operation.
Fig. 16
GREASE REPLACEMENT
This Rotary Hammer is of full air-tight construction to protect
against dust.
Therefore, this Rotary 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.
00BookDH40MEY2.indb900BookDH40MEY2.indb9 2023/06/1316:35:252023/06/1316:35:25
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