Hitachi DS 12DVF2, Technical Data And Service Manual

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8. PRECAUTIONS IN SALES PROMOTION
8-1. Safety Instructions
In the interest of promoting the safest and most efficient use of the Models DS 14DVF2, DS 12DVF2 and
DS 9DVF2 Cordless Driver Drills by all of our customers, it is very important that at the time of sale, the
salesperson carefully ensures that the buyer seriously recognizes the importance of the contents of the Handling
Instructions, and fully understands the meaning of the precautions listed on the Caution Plate and Name Plate
attached to each tool.
A. Handling Instructions
Salespersons must be thoroughly familiar with the contents of the Handling Instructions in order to give pertinent
advice to the customer. In particular, they must have a thorough understanding of the precautions for use of the
cordless tools which are different from those of ordinary electric power tools.
(1) Before use, ensure that the unit is fully charged.
New units are not fully charged. Even if the units were fully charged at the factory, long periods of inactivity,
such as during shipping, cause the storage battery to lose its charge. Customers must be instructed to fully
charge the unit prior to use.
(2) When charging storage batteries, use only the exclusive Models UC 14SD, UC 12SD or UC 9SD Charger
provided with the tool. Because of the designed rapid-charging feature (about one hour), use of other battery
chargers is hazardous.
(3) Connect the Charger to an AC power outlet only.
Use of any other power source (DC outlet, fuel powered generator, etc.) will cause the Charger to overheat
and burn out.
(4) Do not use any voltage increasing equipment (transformer, etc.) between the power source and the Charger.
If the Charger is used with voltage higher than that indicated on the unit, it will not function properly.
(5) Conduct battery charging at an ambient temperature range of 10 ˚C --- 40 ˚C (50 ˚F --- 104 ˚F).
Special temperature sensitive devices are employed in the Charger to permit rapid charging. Ensure that
customers are instructed to use the Charger at the indicated ambient temperature range. At temperature
under 10 ˚C (50 ˚F) the thermostat will not function properly, and the storage battery may be overcharged.
At temperature over 40 ˚C (104 ˚F), the storage battery cannot be sufficiently charged. The optimum
temperature range is 20 ˚C --- 25 ˚C (68 ˚F --- 77 ˚F).
(6) The battery charger should not be used continuously.
At high ambient temperature, if over three storage batteries are charged in succession, the temperature of the
coils on the transformer will rise and there is a chance that the temperature fuse inserted in the interior of the
transformer will inadvertently melt. After charging one battery, please wait about 15 minutes before charging
the next battery.