6. Under normal operation, the tool is designed to pro-
duce vibration. The screws can come loose easily,
causing a breakdown or accident. Check tightness of
screws carefully before operation.
7. In cold weather or when the tool has not been used
for a long time, let the tool warm up for several
minutes by operating it under no load. This will
loosen up the lubrication. Without proper warm-up,
hammering operation is difficult.
8. Always be sure you have a firm footing.
9. Be sure no one is below when using the tool in high
locations.
10. Hold the tool firmly with both hands.
11. Keep hands away from moving parts.
12. Do not leave the tool running. Operate the tool only
when hand-held.
13. Do not point the tool at any one in the area when
operating. The bit could fly out and injure someone
seriously.
14. Do not touch the bit or parts close to the bit immedi-
ately after operation; they may be extremely hot and
could burn your skin.
SAVE THESE INSTRUCTIONS.
OPERATING INSTRUCTIONS
Installing or removing battery cartridge (Fig. 1)
•
Always switch off the tool before insertion or removal of the
battery cartridge.
•
To remove the battery cartridge, withdraw it from the tool
while sliding the button on the cartridge.
•
To insert the battery cartridge, align the tongue on the
battery cartridge with the groove in the housing and slip it
into place. Always insert it all the way until it locks in place
with a little click. If you can see the red part on the upper
side of the button, it is not locked completely. Insert it fully
until the red part cannot be seen. If not, it may accidentally
fall out of the tool, causing injury to you or someone around
you.
•
Do not use force when inserting the battery cartridge. If the
cartridge does not slide in easily, it is not being inserted
correctly.
Charging (Fig. 2)
1. Plug the battery charger into your power source. Two charging lights will flash in green color repeatedly.
2. Insert the battery cartridge into charger until it stops adjusting to the guide of charger. Terminal cover of charger can be
opened with inserting and closed with pulling out the battery cartridge.
3. When the battery cartridge is inserted, the charging light color will change from green to red and charging will begin. The
charging light will keep lighting up lit steadily during charging.
One red charging light indicates charged condition in 0 – 80% and two red ones indicates 80 – 100%.
4. With finish of charge, the charging lights will change from two red ones to two green ones.
5. If you leave the battery cartridge in the charger after the charging cycle is complete, the charger will switch into its ‘‘trickle
charge (maintenance charge)’’ mode which will last approximately 24 hours.
6. After charging, unplug the charger from the power source.
Cooling system
•
This charger is equipped with cooling fan for heated battery in order to enable the battery to prove its own performance. Sound
of cooling air comes out during cooling, which means no trouble on the charger.
•
Yellow light will flash for warning in the following cases.
– Trouble on cooling fan
– Incomplete cool down of battery, such as, being clogged with dust
The battery can be charged in spite of the yellow warning light. But the charging time will be longer than usual in this case.
Check the sound of cooling fan, vent on the charger and battery, which can be sometime clogged with dust.
•
The cooling system is in order although no sound of cooling fan comes out, if the yellow warning light will not flash.
•
Always keep clean the vent on charger and battery for cooling.
•
The products should be sent to repair or maintenance, if the yellow warning light will frequently flash.
Conditioning charge
Conditioning charge can extend the life of battery by automatically searching the optimum charging condition for the batteries
in every situation.
The battery employed in the following conditions repeatedly, will be worn out shortly, and yellow warning light may flash.
1. Recharge of battery with its high temperature
2. Recharge of battery with its low temperature
3. Recharge of full charged battery
4. Over-discharge of battery (contunue to discharge battery in spite of down of power.)
5. Recharge under broken cooling system
The charging time of such battery is longer than usual.
Trickle charge (Maintenance charge)
If you leave the battery cartridge in the charger to prevent spontaneous discharging after full charge, the charger will switch into
its ‘‘trickle charge (maintenance charge)’’ mode and keep the battery cartridge fresh and fully charged.
Tips for maintaining maximum battery life
1. Charge the battery cartridge before completely discharged.
Always stop tool operation and charge the battery cartridge when you notice less tool power.
2. Never recharge a fully charged battery cartridge.
Overcharging shortens the battery service life.
3. Charge the battery cartridge with room temperature at 10°C – 40°C (50°F – 104°F).
Let a hot battery cartridge cool down before charging it.
4. Charge the Nickel Metal Hydride battery cartridge when you do not use it for more than six months.
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