Prior To Operation; How To Use - Hitachi DS 12DVA Instrucciones De Manejo

English
(2) Regarding the temperatures of the rechargeable
battery.
The temperatures for rechargeable batteries are as
shown in the table below, and betteries that have
become hot should be cooled for a while before
being recharged.
Table 2 Recharging ranges of batteries
Rechargeable batteries
EB12
EB12S, EB12G, EB12B, EB12M
EB12H
(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)
Charger
UC14YF
Battery
EB12, EB12S Approx. 45 min.
EB12G Approx. 55 min.
EB12B, EB12M Approx. 60 min.
EB12H
NOTE
The charging time may vary according to tempera-
ture and power source voltage.
4. Disconnect the charger's power cord from the AC
outlet.
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.
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 ex-
tended period is not activated, the electric dis-
charge might be low when using them the first and
second time. This is a temporary phenomenon, and
normal time required for recharging will be re-
stored by recharging the batteries 2 – 3 times.
How to make the batteries perform longer.
(1) Recharge the batteries before they become com-
pletely 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,
6
Temperatures at
which the battery
can be recharged
–5 – 40˚C
–5 – 60˚C
0 – 45˚C
UC14YF2
Approx. 45 min.
Approx. 55 min.
Approx. 60 min.
– Approx. 70 min.
and the battery life will be shortened. Leave the
battery and recharge it after it has cooled for a
while.
CAUTION
If the battery has been heated right after operation
(or due to sunlight, etc.), the charger's 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 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 Agent.
Since the built-in micro computer takes about 3
seconds to confirm that the battery being charged
with UC14YF / UC14YF2 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.

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. Mounting and dismounting of the bit.
(1) Mounting the bit
After inserting a driver bit, etc. into the keyless drill
chuck, firmly grasp the ring and tighten the sleeve
by turning it toward the right (in the clockwise
direction as viewed from the front). (See Fig. 4)
If the sleeve becomes loose during operation, tighten
it further. The tightening force becomes stronger
when the sleeve is tightened.
(2) Dismounting the bit
Firmly grasp the ring and loosen the sleeve by
turning it toward the left (in the counter-clockwise
direction as viewed from the front). (See Fig. 4)
CAUTION:
When it is no longer possible to loosen the sleeve,
use a vise or similar instrument to secure the bit.
Set the clutch mode between 1 and 3 and then turn
the sleeve to the loose side (left side) while oper-
ating the clutch. It should be easy now to loosen
the sleeve.
2. Confirm that the battery is mounted correctly.
3. Check the rotational direction
The bit rotates clockwise (viewed from the rear
side) by pushing the R-side of the selector button.
The L-side of the selector button is pushed to turn
the bit counterclockwise. (See Fig. 5). (The
R
marks are provided on the body.)
When the trigger switch is depressed, the bit ro-
tates. When the trigger is released, the bit stops.
The rotational speed of the drill can be controlled
by varying the amount that the trigger switch is
pulled. Speed is low when the trigger switch is
pulled slightly and increases as the trigger switch
is pulled more.
When releasing the trigger of the switch, the brake
will be applied for immediate stopping.
L and