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GENERAL OPERATIONAL PRECAUTIONS
1. Keep work area clean. Cluttered areas and benches
invite accidents.
2. Avoid dangerous environment. Don’t expose power
tools and charger to rain. Don’t use power tools
and charger in damp or wet locations. And keep
work area well lit.
Never use power tools and charger near flammable
or explosive materials.
Do not use tool and charger in presence of
flammable liquids or gases.
3. Keep children away. All visitors should be kept
safe distance from work area.
4. Store idle tools and charger. When not in use,
tools and charger should be stored in dry, high
or locked-up place – out of reach of children. Store
tools and charger in a place where the temperature
is less than 40°C.
5. Don’t force tool. It will do the job better and safer
at the rate for which it was designed.
6. Use right tool. Don’t force small tool or attachment
to do the job of a heavy duty tool.
7. Wear proper apparel. No loose clothing or jewelry
to get caught in moving parts. Rubber gloves and
footwear are recommended when working outdoor.
8. Use safety glasses with most tools. Also face or
dust mask if cutting operation is dusty.
9. Don’t abuse cord. Never carry charger by cord or
yank it to disconnect from receptacle. Keep cord
from heat, oil and sharp edges.
10. Secure work. Use clamps or a vise to hold work.
It’s safer than using your hand and it frees both
hands to operate tool.
11. Don’t overreach. Keep proper footing and balance
at all times.
12. Maintain tools with care. Keep tools sharp at all
times, and clean for best and safest performance.
Follow instructions for lubricating and changing
accessories.
13. When the charger is not in use, or when being
maintained and inspected, disconnect the power
cord of the charger from the receptacle.
14. Remove chuck wrenches and wrenches. Form habit
of checking to see that wrenches are removed
from tool before turning it on.
15. Avoid accidental starting. Don’t carry tool with
finger on switch.
16. Always use the specified charger.
Never use a charger other than that specified to
prevent danger.
17. Use only genuine HITACHI replacement parts.
18. Do not use power tools for applications other than
those specified in the Handling Instructions.
19. To ensure the designed operational integrity of
power tools and charger, do not remove installed
covers or screws.
20. Consult an authorized Service Center in the event
of power tool and charger failure.
21. Always use the charger at the voltage specified
on the name plate.
22. Do not touch movable parts or accessories unless
the battery has been removed.
23. Always charge the battery before use.
24. Never use a battery other than that specified. Do
not connect a usual dry cell, a rechargeable battery
other than that specified or a car battery to the
power tool.
25. Do not use any transformer that has a booster.
26. Do not charge the battery from an engine electric
generator or DC power supply.
27. Always charge indoors. As the charger and battery
heat-up slightly during charging, charge the battery
in a place not exposed to direct sunlight; which
has low humidity and is well ventilated.
28. When working in a high place, pay attention to
activities below. Before commencing, ensure that
there are no people below.
PRECAUTIONS FOR CORDLESS HAMMER
DRILL
1. These chargers utilize a special charging control
system due to the fact that the high charging
speed. Therefore, always charge the battery at a
temperature of 0–40°C for UC 24YF. A lower
temperature than these specified ranges will result
in overcharging which will shorten the battery life.
The battery cannot be charged at a temperature
higher than 40°C. The most suitable temperature
for charging is that of 20–25°C.
2. Do not use the charger continuously.
When one charging is completed, leave the charger
for about 15 minutes before the next charging of
battery.
3. Do not allow foreign matter to enter the hole for
connecting the rechargeable battery.
4. Never disassemble the rechargeable battery and
charger.
5. Never short-circuit the rechargeable battery. Short-
chircuiting the battery will cause a great electric
current and overheat. It results in burn or damage
to the battery.
6. Do not dispose of the battery in fire.
If the battery is burnt, it may explode.
7. When using this unit continuously, the unit may
overheat, leading to damage in the motor and
switch. Please leave it without using it for
approximately 15 minutes.
8. Do not insert object into the air ventilation slots
of the charger.
Inserting metal objects or inflammables into the
charger air ventilation slots will result in electrical
shock hazard or damaged charger.
9. Using an exhausted battery will damage the
charger.
10. When drilling in wall, floor or ceiling, check for
buried electric power cord, etc.
11. Bring the battery to the shop from which it was
purchased as soon as the post-charging battery
life becomes too short for practical use. Do not
dispose of the exhausted battery.
12. Wear earplugs to protect your ears during
operation.
13. Do not touch the bit during or immediately after
operation. The bit becomes very hot during
operation and could cause serious burns.
14. Always hold the body handle and side handle of
the power tool firmly. Otherwise the counterforce
produced may result in inaccurate and even
dangerous operation.