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Hitachi WR12DAF3 Manual

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9
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 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
two hours 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 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.
〈
UC14YFA
〉
Before using the impact wrench, charge the battery as
follows.
1. Connect the charger’s power cord to a receptacle.
When the power cord is connected, the charger’s pilot
lamp will blink in red (At 1-second intervals).
2. Insert the battery into the charger.
Insert the battery firmly, in the direction shown in Fig.
4, until it contacts the bottom of the charger
compartment.
CAUTION
⅜ If the battery is inserted in the reverse direction, not
only recharging will become impossible, but it may
also cause the fuse to blow, or problems in the charger
such as deformed recharging terminal.
3. Charging
When inserting a battery in the charger, charging will
commence and the pilot lamp will light continuously
in red.
When the battery becomes fully recharged, the pilot
lamp will blink in red (At 1-second intervals.) (See
Table 3).
(1) Pilot lamp indication
The indications of the pilot lamp will be as shown in
Table 3, according to the condition of the charger or
the rechargeable battery.
(2) Regarding the temperatures of the rechargeable
battery.
The temperatures for rechargeable batteries are as
shown in the table below, and batteries that have
become hot should be cooled for a while before being
recharged.
Table 4 Recharging ranges of batteries
Temperatures at
Rechargeable batteries which the battery
can be recharged
EB1220BL –5°C – 60°C
EB1226HL 0°C – 45°C
Lights for 0.5 seconds. Does not light for
0.5 seconds. (off for 0.5 seconds)
Lights continuously
Lights for 0.5 seconds. Does not light for
0.5 seconds. (off for 0.5 seconds)
Lights for 0.1 seconds. Does not light for
0.1 seconds. (off for 0.1 seconds)
Lights continuously
Before
charging
While
charging
Charging
complete
Charging
impossible
Charging
impossible
Blinks
(RED)
Lights
(RED)
Blinks
(RED)
Flickers
(RED)
Lights
(GREEN)
Malfunction in the battery
or the charger
The battery temperature
is high, making
recharging impossible.
Table 3
Indications of the lamps
… 10 …


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