Maintenance And Inspection - Hitachi db 3dl2 Handling Instructions Manual

CAUTION
Always set the lock switch to the "▼ LOCK" position
when carrying or storing the tool eliminate unintentional
starting.
(2) Main switch
The main switch functions as a motor switch and
rotational direction selector switch. When the main
switch is pushed to "R" indicated on the main switch,
the bit rotates clockwise. When the main switch is
pushed to "L" indicated on the main switch, the bit
rotates counterclockwise. When the main switch is
released, the tool stops. (Fig. 10)
9. Using the light
The light lights when the light switch is pushed. When
the light switch is pushed again, the light is turned off .
(Fig. 11)
CAUTION
Do not look directly into the light. Such actions could
result in eye injury.
Work
Steel
Drilling
Aluminum
Machine screw
Driving
Wood screw
12. How to select tightening torque and rotational speed
Use
Machine screw
Driving
Wood screw
Drilling Metal
CAUTION
○ The selection examples shown in Table 3 should be
considered as general standard. As diff erent types
of tightening screws and diff erent materials to be
tightened are used in actual works proper adjustments
are naturally necessary.
○ When using the driver drill with a machine screw at
HIGH (high speed), a screw may damage or a bit may
loosen due to the tightening torque too strong. Use the
driver drill at LOW (low speed) when using a machine
screw.
NOTE
The use of the battery EBM315 in a cold condition
(below 0 degree Centigrade) can sometimes result in
the weakened tightening torque and reduced amount
of work. This, however, is a temporary phenomenon,
and returns to normal when the battery warms up.
10. Using in the straight or pistol confi guration
CAUTION
11. The scope and suggestions for uses
Table 2
Use for drilling purpose.
Use the bit or socket matching the screw diameter.
Use after drilling a pilot hole.
Table 3
Rotating speed selection (Position of the shift knob)
Cap Position
LOW (Low speed)
For 5 mm or smaller diameter
1 – 21
screws
For 3.5 mm or smaller nominal
1 –
diameter screws
For drilling with a metal
working drill bit

MAINTENANCE AND INSPECTION

1. Inspecting the tool
2. Inspecting the mounting screws
3. Maintenance of the motor
4. Cleaning on the outside
Use the tool in the straight confi guration when using in
confi ned spaces. Use it in the pistol confi guration when
using in other locations. Select the confi guration that
best matches the tool application. When changing the
confi guration, the tool will make a clicking sound when
it snaps into position. Bend (or extend) the tool until the
clicking sound is heard.
When using the tool in the pistol confi guration, do
not hold onto the bending portion of the tool when
returning to the straight confi guration. Your fi nger or
other part of the hand may be pinched by the bending
portion resulting in possible injury (Fig. 12).
The usable scope for various types of work based
on the mechanical structure of this unit is shown in
Table 2.
Suggestions
For 3 mm or smaller diameter
screws
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.
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.
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.
When the driver drill 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.
English
HIGH (High speed)
35