Hitachi Koki DV 20VD WU Instrucciones De Manejo página 3

IMPACT DRILL SAFETY WARNINGS
1. Wear ear protectors when impact drilling.
Exposure to noise can cause hearing loss.
2. Use auxiliary handle(s), if supplied with the tool.
Loss of control can cause personal injury.
3. Hold power tool by insulated gripping surfaces,
when performing an operation where the cutting
accessory may contact hidden wiring or its own
cord.
Cutting accessory contacting a "live" wire may make
exposed metal parts of the power tool "live" and could
give the operator an electric shock.
ADDITIONAL SAFETY WARNINGS
1. Ensure that the power source to be utilized conforms
to the power requirements specifi ed on the product
nameplate.
2. Ensure that the power switch is in the OFF position.
If the plug is connected to a receptacle while the power
switch is in the ON position, the power tool will start
operating immediately, which could cause a serious
accident.
3. When the work area is removed from the power source,
use an extension cord of suffi cient thickness and rated
capacity. The extension cord should be kept as short as
practicable.
4. Drilling
○ When drilling, start the impact drill slowly, and gradually
increasing speed as you impact drill.
○ Always apply pressure in a straight line with the bit. Use
enough pressure to keep drilling, but do not push hard
enough to stall the motor or defl ect the bit.
○ To minimize stalling or breaking through the material,
reduce pressure on drill and ease the bit through the last
part of the hole.
○ If the impact drill stalls, release the trigger immediately,
remove the bit from the work and start again. Do not
click the trigger on and off in an attempt to start a stalled
impact drill. This can damage the impact drill.
○ The larger the drill bit diameter, the larger the reactive
force on your arm.
Be careful not to lose control of the impact drill because
of this reactive force.
To maintain fi rm control, establish a good foothold, use
side handle, hold the impact drill tightly with both hands,
and ensure that the impact drill is vertical to the material
being drilled.
○ Precautions on boring
The drill bit may become overheated during operation;
however, it is suffi ciently operable. Do not cool the drill
bit in water or oil.
○ Caution concerning immediately after use
Immediately after use, while it is still revolving, if the
impact drill is placed on a location where considerable
ground chips and dust have accumulated, dust may
occasionally be absorbed into the drill mechanism.
Always pay attention to this undesirable possibility.
5. Check the rotational direction
○ Actuate the rotational change lever only when the
machine is at a standstill.
The rotational change lever is used to reverse the
rotational direction of the machine.
However, this is not possible with the On/Off switch
actuated.
○ Operating the tool with the rotational change lever in
mid-position may result in damage.
When switching, make sure that you shift the rotational
change lever to the correct position.
○ Always use the impact drill with clockwise rotation, when
using it as an impact drill.
6. IMPACT to ROTATION changeover
○ Do not use the impact drill in the IMPACT mode if the
material can be bored by rotation only. Such action will
not only reduce drill effi ciency, but may also damage the
drill tip.
○ Operating the impact drill with the change lever in
mid-position may result in damage. When switching,
make sure that you shift the change lever to the correct
position.
7. RCD
The use of a residual current device with a rated residual
current of 30 mA or less at all times is recommended.
SYMBOLS
WARNING
The following show symbols used for the machine.
Be sure that you understand their meaning before
use.
DV20VD: Impact Drill
Read all safety warnings and all instructions.
Only for EU countries
Do not dispose of electric tools together with
household waste material!
In observance of European Directive 2002/96/
EC on waste electrical and electronic equipment
and its implementation in accordance with
national law, electric tools that have reached
the end of their life must be collected separately
and returned to an environmentally compatible
recycling facility.
V
Rated voltage
P
Power Input
n
No-load speed
0
Rotation only function
Rotation and impact function
Concrete
Switching ON
Switching OFF
On / Off switch lock-on
Change rotation speed - High speed
Change rotation speed - Low speed
Clockwise rotation
Counterclockwise rotation
Disconnect mains plug from electrical outlet
Class II tool
3
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