English
12
〈UC18YG〉
Before using the power tool, charge the battery as follows.
1. Connect the charger power cord to the receptacle
Connecting the power cord will turn on the charger.
2. Insert the battery into the charger
Insert the battery firmly while observing its direction,
until it contacts the bottom of the charger (See Fig. 5)
(the pilot lamp lights up).
CAUTION
If the pilot lamp does not light up, pull out the
power cord from the receptacle and check the
battery mounting condition.
The pilot lamp goes off to indicate that the battery is
fully charged.
The battery charging time becomes longer when a
temperature is low or the voltage of the power source
is too low.
(1) Regarding the temperatures of the rechargeable
battery
The temperatures for rechargeable batteries are as
shown in Table 7, and batteries that have become hot
should be cooled for a while before being recharged.
Table 7 Recharging ranges of batteries
(2) Regarding recharging time
Depending on the combination of the charger and
batteries, the charging time will become as shown in
Table 8.
When the pilot lamp does not go off even if more
than 120 minutes have elapsed after starting of the
charging, stop the charging and contact your HITACHI
AUTHORIZED SERVICE CENTER.
Table 8 Charging time (At 20°C)
CAUTION
If the battery is heated due to direct sunlight, etc.,
just after operation, the charger pilot lamp may
not light up. At that time, cool the battery first,
then start charging.
3. Disconnect the charger power cord from the
receptacle
4. Hold the charger tight and pull out the battery
Regarding electric discharge in case of new
batteries, etc.
As the internal chemical substance of new batteries
and batteries that have not been used for an extended
period is not activated, the electric discharge might
be low when using them the first and second time.
This is a temporary phenomenon, and normal time
required for recharging will be restored by recharging
the batteries 2 – 3 times.
How to make the batteries perform longer
(1) Recharge the batteries before they become completely
exhausted.
When you feel that the power of the tool becomes
weaker, stop using the tool and recharge its battery.
If you continue to use the tool and exhaust the electric
current, the battery may be damaged and its life will
become shorter.
(2) Avoid recharging at high temperatures.
A rechargeable battery will be hot immediately after
use. If such a battery is recharged immediately after
use, its internal chemical substance will deteriorate,
and the battery life will be shortened. Leave the battery
and recharge it after it has cooled for a while.
PRIOR TO OPERATION
1. Setting up and checking the work environment
Check if the work environment is suitable by following
the precautions.
HOW TO USE
1. Confirm the cap position (see Fig. 6)
The three modes of screwdriver, drill and impact drill
can be switched by the position of the cap in this unit.
(1) When using this unit as a screwdriver, line up the one
of the numbers “1, 3, 5 ... 22” on the cap, or the black
dots, with the triangle mark on the outer body.
(2) When using this unit as a drill, align the cap drill mark
“
” with the triangle mark on the outer body.
(3) When using this unit as an impact drill, align the cap
hammer mark “
” with the triangle mark on the
outer body.
CAUTION
䡬 The cap cannot be set between the numerals “1, 3, 5
... 22” or the black dots.
䡬 Do not use with the cap numeral between “22” and
the black line at the middle of the drill mark. Doing so
may cause damage (See Fig. 7).
2. Tightening torque adjustment
(1) Tightening torque
Tightening torque should correspond in its intensity
to the screw diameter. When too strong torque 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
The tightening torque differs depending on the type
of screw and the material being tightened.
The unit indicates the tightening torque with the
numbers “1, 3, 5 ... 22” on the cap, and the black
dots. The tightening toque at position “1” is the
weakest and the torque is strongest at the highest
number (See Fig. 6).
(3) Adjusting the tightening torque
Rotate the cap and line up the numbers “1, 3, 5 ... 22”
on the cap, or the black dots, with the triangle mark on
the outer body. Adjust the cap in the weak or the strong
torque direction according to the torque you need.
CAUTION
䡬 The motor rotation may be locked to cease while the
unit is used as drill. While operating the impact driver
drill, take care not to lock the motor.
Charger
UC18YG
Rechargeable batteries
Ni-Cd batteries 0°C – 45°C
Charger
UC18YG
Battery
EB1414S, EB1814SL Approx. 30 min.
EB14B, EB1820L Approx. 50 min.
EB1424, EB1824L Approx. 60 min.
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