Hitachi DH 18DBL Handling Instructions Manual page 44

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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. Cleaning of the battery installation compartment
After drilling concrete, if concrete dust has
accumulated on the terminals or the area where
the battery slides within the battery installation
compartment, clean off the accumulated
concrete dust with a dry cloth before using the
tool. (Fig. 29)
Also, after cleaning, ensure that the battery can
be installed and removed smoothly from the
tool.
CAUTION
Using the tool when the battery is covered with concrete dust may lead to
accidents such as the battery falling during use.
Furthermore, such use may cause a malfunction or contact failure between the
battery and the terminals.
6. 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.
Battery sliding
grooves
44
Terminals
Fig. 29