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CAUTION

䡬

If the battery is charged while it is heated because
it has been left for a long time in a location subject
to direct sunlight or because the batetery has just
been used, the pilot lamp of the charger lights up
green. In such a case, first let the battery cool, then
start charging.

䡬

When the pilot lamp flickers in red (at 0.2-second
intervals), check for and take out any foreign objects
in the charger’s battery installation hole. If there are
no foreign objects, it is probable that the battery
or charger is malfunctioning. Take it to your
authorized Service Center.

䡬

Since the built-in micro computer takes about 3
seconds to confirm that the battery being charged
with UC14YFA is taken out, wait for a minimum of
3 seconds before reinserting it to continue charging.
If the battery is reinserted within 3 seconds, the
battery may not be properly charged.

〈

UC18YG

〉

Before using the driver drill, 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 (the pilot
lamp lights up) (See 

Fig. 4

).

CAUTION

If the pilot lamp does not light up, pull out the
power cord from the receptacle and check the
battery mounting condition.

(1) Regarding the temperatures of the rechargeable

battery
The temperatures for rechargeable batteries are as
shown in 

Table 4

.

Table 4

 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 5

.

Table 5

 Charging time (At 20°C)

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.

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.

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’s power cord from the

receptacle

4. Hold the charger firmly and pull out the battery
NOTE

After charging, pull out batteries from the charger
first, and then keep the batteries properly.

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 clutch dial position (See Fig. 5)

The tightening torque of this unit can be adjusted
according to the clutch dial position, at which the
clutch dial is set.

(1) When using this unit as a screwdriver, line up the one

of the numbers “1, 3, 5 ... 22” on the clutch dial, or
the dots, with the triangle mark on the outer body.

(2) When using this unit as a drill, align the clutch dial

drill mark “

” with the triangle mark on the outer

body.

CAUTION

䡬

The clutch dial cannot be set between the numerals
“1, 3, 5 ... 22” or the dots.

Temperatures at

Rechargeable batteries

which the battery
can be recharged

EB912S, EB914S, EB914,
EB9B, EB1212S, EB1214S,

0°C – 45°C

EB1214L, EB1220BL

Charger

UC18YG

Battery

EB912S, EB914S, EB914,

Approx. 30 min.

EB1212S, EB1214S, EB1214L

EB9B, EB1220BL

Approx. 50 min.

01Eng_DS9DM_EE

08/4/28, 17:24

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