Hitachi DV 10DVA - Manual (Page 8)

6
English
NOTE
The charging time may very depending on the
ambient temperature and input power supply
voltage conditions.
The example of the relationship between the input
power supply voltage and the charging time is shown
in Fig 9.
The charging time decreasaes if the ambient
temperature and input power supply voltage are
high and increases when they are low.
CAUTION
If the battery is heated due to direct sunlight, etc.,
just after operation, the charger pilot lamp may
not light. At that time cool the battery first, then
start charging.
3. Disconnect the charger power cord from the AC
outlet.
4. Hold the charger tight and pull out the battery.
PRIOR TO OPERATION
1. Setting up and checking the work environment
Check if the work environment is suitable by fol-
lowing the precautions.
HOW TO USE
1. Confirm the cap position
The three modes of screwdriver, drill and impact
drill can be switched by the position of the cap in
this tool.
(1) When the tool is used as a screwdriver, align the
number displayed on the cap from "1" to "5" to the
triangle mark of the housing.
(2) When the tool is used as a drill, align the drill mark
" " displayed on the cap to the triangle mark of
the housing.
(3) When the tool is used as the impact drill, align the
hammer mark " " displayed on the cap to the
triangle mark of the housing. (See Fig. 4.)
CAUTION
Align the number and mark on the cap to the
triangle mark of the housing. The middle point of
the numbers and marks on the cap cannot be
secured.
2. Tightening torque adjustment
(1) Tightening torque
Tightening torque should correspond in its intensity
to the screw diameter. When too strong power is
used, the screw head may be broken or be injured.
Be sure to adjust the cap position according to the
screw diameter.
(2) Tightening torque indication
Tightening torque should be changed according to
the screw type and the materials to be tightened.
Guidance of the tightening torque is indicated on
the cap of this unit with numerals “1”, “2”, “3”,
“4” and “5”. The minimum power is from “1”
position and bigger the value the stronger is the
power (see Fig. 4).
(3) How to adjust the tightening torque
Rotate the cap and set to one of the numerals.
Adjust the torque by cap rotation in such a way that
when the torque is too strong, set to the next
smaller numeral and set to the next larger numeral
when too weak.
CAUTIONS
⅜ The motor rotation may be locked to cease while
the unit is used as drill. While operating the impact
drill, take care not to lock the motor.
⅜ Too long hammering may cause the screw broken
due to excessive tightening.
APPLICATIONS
⅜ Drilling of brick and concrete block, etc.
⅜ Driving and removing of machine screws, wood
screws, tapping screws, etc.
⅜ Drilling of various metals.
⅜ Drilling of various woods.
BATTERY REMOVAL/INSTALLATION
1. Battery removal
Hold the handle tightly and push the battery latch
to remove the battery (see Figs. 1 and 2).
CAUTION
Never short-circuit the battery.
2. Battery installation
Insert the battery while observing its polarities (see
Fig. 2).
CHARGING
Before using the impact drill, charge the battery as
follows.
1. Insert the battery in the charger.
Position the battery so that the nameplate faces
toward the nameplate of the charger and press in
the battery until it comes into contact with the
bottom plate. (See Figs. 1 and 3.)
2. Connect the charger power cord to the AC outlet.
Connecting the power cord will turn on the charger
(the pilot lamp lights up).
CAUTION
If the pilot lamp does not light up, pull out the
power cord from the AC outlet and check the
battery mounting condition.
About 1 hour is required to fully charge the battery
at a temperature of about 20°C. The pilot lamp goes
off to indicate that the batterry is fully charged.
100
90
80
70
60
50
40
30
20
10
0
10°C
20°C
(Minutes)
95% of Rated
Voltage 105% of
Rated Voltage Rated Voltage
(Voltage Listed
on Nameplate)
Ambient temperature
Charging time
Fig.9 Relationship Between Input Power Supply
Voltage and Charging Time
Input Power Supply Voltage
Battery: EB12