Maintenance And Inspection - Hitachi WH 18DBDL2 Handling Instructions Manual

By using the Tightening mode selector switch on the side
of the tool body, the tightening torque can be adjusted
according to the type of work.
The Tightening mode switches between 4 diff erent modes
each time the Tightening mode selector switch is pressed.
Normal mode allows screws to be tightened smoothly and
gently.
Under normal circumstances, use Normal mode.
Power mode is suitable for heavy-load work that requires
more force, such as tightening long screws.
Use it when you feel that Normal mode lacks suffi cient
power.
Self-drilling screw mode is used for tightening self-
drilling Teks screws. This mode reduces the chances of
overtightening that could result in severing of the screw
head, breakage of the screw, or slippage.
NOTE
○ The appropriate mode diff ers depending on the screw
and the material being screwed. Drive in a few test
screws and adjust the mode setting accordingly.
○ The tightening mode selector switch can only be set after
the battery has been installed in the driver and the trigger
switch has been pulled once.

MAINTENANCE AND INSPECTION

1. Inspecting the driver bit
Using a broken bit or one with a worn out tip is dangerous
because the bit can slip. Replace it.
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. Cleaning on the outside
When the power tool is stained, wipe with a soft dry cloth
or a cloth moistened with soapy water. Do not use chloric
solvents, gasoline or paint thinner, for they melt plastics.
5. Storage
Store the power tool in a place in which the temperature
is less than 40°C and out of reach of children.
NOTE
Storing lithium-ion batteries.
Make sure the lithium-ion batteries have been fully
charged before storing them.
Prolonged storage (3 months or more) of batteries with
a low charge may result in performance deterioration,
signifi cantly reducing battery usage time or rendering
the batteries incapable of holding a charge.
However, signifi cantly reduced battery usage time may
be recovered by repeatedly charging and using the
batteries two to fi ve times.
If the battery usage time is extremely short despite
repeated charging and use, consider the batteries dead
and purchase new batteries.
CAUTION
In the operation and maintenance of power tools, the
safety regulations and standards prescribed in each
country must be observed.
Important notice on the batteries for the Hitachi
cordless power tools
Please always use one of our designated genuine
batteries. We cannot guarantee the safety and
performance of our cordless power tool when used with
batteries other than these designated by us, or when
the battery is disassembled and modifi ed (such as
disassembly and replacement of cells or other internal
parts).
NOTE
Due to HITACHI's continuing program of research and
development, the specifi cations herein are subject to
change without prior notice.
8