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(2) Regarding the temperatures of the rechargeable
battery.
The temperatures for rechargeable batteries are as
shown in Table 2, and batteries that have become
hot should be cooled for a while before being
recharged.
Table 2 Recharging ranges of batteries
(3) Regarding recharging time
Depending on the combination of the charger and
batteries, the charging time will become as shown
in Table 3.
Table 3 Charging time (At 20°C)
NOTE:
The charging time may vary according to
temperature and power source voltage.
4. Disconnect the chargers power cord from the
rceptacle.
5. Hold the charger firmly and pull out the battery.
NOTE:
After operation, pull out batteries from the charger
first, and then keep the batteries properly.
CAUTION:
If the battery has been heated right after operation
(or due to sunlight, etc.), the chargers pilot lamp
may not light in red. In such a case, first let the
battery cool, then start charging.
When the pilot lamp flickers in red quickly (at 0.2-
second intervals), check for and take out any foreign
objects in the chargers battery installation hole. If
there are no foreign objects, it is probable that the
battery or charger is malfunctioning. Take them to
your HITACHI Authorized Service Center.
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.
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 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. 4)
The tightening torque of this unit can be adjusted
according to the cap position, at which the cap is
set.
(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.
CAUTION:
The cap cannot be set between the numbers 1,
3, 5 ... 22 or the black dots.
Do not use with the cap set at the black line between
the number 22 and the drill mark
. Doing
so may cause damage. (See Fig. 5)
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.
Temperatures at
Rechargeable batteries which the battery
can be recharged
EB912S, EB9S, EB914, EB914S,
EB9B, EB9M, EB924, EB1212S,
EB12S, EB1214L, EB1214S, EB12B,
EB1220BL, EB12M, EB1224,
EB1412S, EB14S, EB1414, EB1414S,
EB14B, EB1424
EB12H, EB1222HL, EB1230H,
EB1230HL, EB14H, EB1430H
5˚C 55˚C
0˚C 45˚C
Charger
UC14YFA
Battery
EB912S, EB9S, EB1212S, EB12S,
EB1412S, EB14S, EB914, EB1214L, Approx. 30 min.
EB1414, EB914S, EB1214S, EB1414S
EB9B, EB9M, EB12B, EB1220BL
Approx. 50 min.
EB12M, EB14B
EB9H, EB12H, EB1222HL, EB14H Approx. 55 min.
EB924, EB1224, EB1424 Approx. 60 min.
EB930H, EB1230H, EB1230HL
Approx. 70 min.
EB1430H
32


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