HIKOKI DH36DMA Instrucciones De Manejo página 13

*1 When drilling fragile materials, or when conducting
chipping operations or alignment operations, change
the tool's rotation speed in accordance with the task by
using the rotation speed selector switch.
NOTE
○ Rotation speed cannot be adjusted until a battery is
installed to the power tool and the switch has been
triggered once.
○ While the tool's motor is operating, rotation speed
cannot be adjusted by pressing the rotation speed
selector switch.
To adjust rotation speed, switch off the tool. Once the
motor has stopped, press the rotation speed selector
switch to adjust the speed.
*2 For detailed information regarding each tool, contact a
HiKOKI authorized service center.
Operate this Rotary Hammer by utilizing its own weight. The
performance will not be better even if it is pressed or thrust
forcibly against the work surface.
Hold this Rotary Hammer with a force just suffi cient to
counteract the reaction.
CAUTION
After long time of use, the cylinder case becomes hot.
Therefore, be careful not to burn your hands.
Warming up (Fig. 16)
The grease lubrication system in this unit may require
warming up in cold regions.
Position the end of the bit so makes contact with the
concrete, turn on the switch and perform the warming
up operation. Make sure that a hitting sound is produced
and then use the unit.
CAUTION
When the warming up operation is performed, hold the
side handle and the main body securely with both hands
to maintain a secure grip and be careful not to twist your
body by the jammed drill bit.
ABOUT THE PROTECTION
FUNCTIONS
This product features functions that are designed to protect
the tool itself as well as the battery. While the switch is
pulled, if any of the safeguard functions are triggered
during operation, the display lamp will blink as described in
Table 3. When any of the safeguard functions are triggered,
immediately remove your fi nger from the switch and follow
the instructions described under corrective action.
Table 3
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)
Flash Sensor signal read
error.
(Control monitoring
function)
Solution
Turn off the unit and
allow it to cool down
for about 15 minutes.
When the temperature
goes down, the unit is
ready for use.
Remove the cause of
the overburdening.
Repair may be
required.
13
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 RFC indicator 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. 21)
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 while operating.
● Possible causes of sudden overburdening
1 Tool bit biting into material
2 Impact against nails, metal or other hard objects
3 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.
GREASE REPLACEMENT
This Rotary Hammer is of full air-tight construction to protect
against dust and to prevent lubricant leakage.
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.
MAINTENANCE AND INSPECTION
CAUTION
Be sure to turned off the switch and remove the battery
before maintenance and inspection.
1. Inspecting the tool
Since use of as dull tool will degrade effi ciency and
cause possible motor malfunction, sharpen or replace
the tool as soon as abrasion is noted.
English
Fig. 21