How To Use; Maintenance And Inspection - Hitachi Koki D 10VG Handling Instructions Manual

In the case of operation in a high place, it is
dangerous to drop the tool accidentally. If the hook
is deformed or hung from the wrong position, there
is danger that the hook will slip off and the tool
will fall.
Be careful to avoid danger.
In making a through hole, the power tool sometimes
shakes violently when the workpiece is pierced,
from example. Be careful you are not hurt by the
hook even if such situation happens.

HOW TO USE

1. Switch operation
When the trigger is depressed, the tool rotates.
When the trigger is released, the tool stops.
The rotational speed of the drill can be controlled
by varying the amount that the trigger switch is
pulled. Speed is low when the trigger switch is
pulled slightly and increases as the trigger switch
is pulled more.
Pulling the trigger and pushing the stopper, it keeps
the switched-on condition which is convenient for
continuous running. When switching off, the stopper
can be disconnected by pulling the trigger again.
2. Drilling
When drilling, start the drill slowly, and gradually
increasing speed as you 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 deflect
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 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 drill. This can damage the drill.
The larger the drill bit diameter, the larger the
reactive force on your arm.
Be careful not to lose control of the drill because
of this reactive force.
To maintain firm control, establish a good foothold,
use side handle, hold the drill tightly with both
hands, and ensure that the drill is vertical to the
material being drilled.

MAINTENANCE AND INSPECTION

1. Inspecting the drill bits
Since use of an abraded drill bits will cause motor
malfunctioning and degraded efficiency, replace the
drill bits with a new one or resharpening without
delay when 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. Inspecting the carbon brushes
For your continued safety and electrical shock
protection, carbon brush inspection and replacement
on this tool should ONLY be performed by a Hitachi
Authorized Service Center.
5. Service parts list
A: Item No.
B: Code No.
C: No. Used
D: Remarks
CAUTION
Repair, modification and inspection of Hitachi Power
Tools must be carried out by a Hitachi Authorized
Service Center.
This Parts List will be helpful if presented with the
tool to the Hitachi Authorized Service Center when
requesting repair or other maintenance.
In the operation and maintenance of power tools,
the safety regulations and standards prescribed in
each country must be observed.
MODIFICATION
Hitachi Power Tools are constantly being improved
and modified to incorporate the latest technological
advancements.
Accordingly, some parts (i.e. code numbers and/or
design) may be changed without prior notice.
GUARANTEE
We guarantee Hitachi Power Tools in accordance with
statutory/country specific 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 Hitachi Authorized Service Center.
NOTE
Due to HITACHI's continuing program of research and
development, the specifications herein are subject to
change without prior notice.
Information concerning airborne noise and vibration
The measured values were determined according to
EN60745 and declared in accordance with ISO 4871.
[D13VG]
Measured A-weighted sound pressure level: 84 dB (A)
Uncertainty KpA: 3 dB (A).
Wear ear protection.
The typical weighted root mean square acceleration
value: 2.5 m/s 2 .
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