Bedienungsanleitung Hitachi WR 12 DMR (Seite 7 von 74) (Englisch)

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(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 2 Recharging ranges of batteries

4. Disconnect the charger’s power cord from the

receptacle

5. Hold the charger firmly and pull out the battery

NOTE

Be sure to pull out the battery from the charger after

use, and then keep it.

CAUTION

⅜ 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 battery 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.

⅜ When the pilot lamp flikers 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 Center.

⅜ Since the built-in micro computer takes about 3

seconds to confirm that the battery being charged

with UC14YFA and UC24YFA are 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 impact driver or impact wrench, 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).

CAUTION

If the pilot lamp does not light up, pull out the

power cord from the receptacle and check the

battery mounting condition.

About 60 minutes 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 120 minutes have elapsed after starting of the

charging, stop the charging and contact your HITACHI

AUTHORIZED SERVICE CENTER.

Temperatures at

Rechargeable batteries which the battery

can be recharged

Ni-Cd batteries –5°C – 60°C

Ni-MH batteries 0°C – 45°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. Preparing and checking the work environment

Make sure that the work site meets all the conditions

laid forth in the precautions.

2. Checking the battery

Make sure that the battery is installed firmly. If it is at

all loose it could come off and cause an accident.

3. Installing the bit (Impact driver)

Always follow the following procedure to install driver

bit (Fig. 2).

(1) Pull the guide sleeve 7 away from front of the tool.

(2) Insert the bit 9 into the hexagonal hole in the anvil 8.

(3) Release the guide sleeve 7 and it returns to its original

position.

CAUTION

If the guide sleeve does not return to its original

position, then the bit is not installed properly.

4. Selecting the socket matched to the bolt

(Impact wrench)

Be sure to use a socket which is matched to the bolt

to be tightened. Using an improper socket will not

only result in insufficient tightening but also in

damage to the socket or nut.

A worn or deformed hex. or square-holed socket will

not give an adequate tightness for fitting to the nut or

anvil, consequently resulting in loss of tightening

torque.

Pay attention to wear of socket hole, and replace

before further wear has developed.

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