Maintenance And Inspection; Troubleshooting - Hitachi DS 18DBL2 Handling Instructions Manual

Safeguard Function
Overburden Protection
Reactive Force Control
Over-discharge Protection
Temperature Protection

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.
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.

TROUBLESHOOTING

Use the inspections in the table below if the tool does not operate normally. If this does not remedy the problem, consult your
dealer or the Hitachi Authorized Service Center.
Symptom
Tool doesn't run
Tool suddenly stopped
Tool bits
-can't be attached
-fall off
Switch can't be pulled
LED Light Display
On 0.1 second/off 0.5 second
On 0.5 second/off 0.5 second
On 0.3 second/off 0.3 second
Possible cause
No remaining battery power
Battery isn't securely attached.
Tool was overburdened
Reactive force control was activated
Battery or tool overheated
The shape of the attachment portion doesn't
match
The lock of the keyless chuck is worn
Forward/reverse selector button is
positioned halfway
Table 3
If the operating with the shift knob set on
HIGH, adjust to LOW and continue operation.
Remove the cause of the overburdening.
Remove the cause of the overburdening.
When operating the tool, fi rmly hold the tool to
make sure it doesn't jerk.
Charge the battery as soon as possible.
Allow the tool and battery to thoroughly cool.
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.
Charge the battery.
Push in the battery until a click is heard.
Remove the cause of the overburdening.
See "Reactive force control".
Allow the tool and battery to thoroughly cool.
The chucking diameter of the keyless chuck
is 1.5 mm to 13 mm. Use a bit that falls
within the stated range.
Contact a Hitachi Authorized Service Center
and arrange to have the old keyless chuck
replaced with a new one.
Press the button fi rmly into position for the
desired direction of rotation.
8
Corrective Action
Remedy