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Table 1
RECOMMENDED MINIMUM AWG SIZE FOR EXTENSION CORDS FOR BATTERY CHARG-
ERS
AC Input Rating Amperes* AWG Size of Cord
Equal to or but less Length of Cord, Feet (Meter)
greater than than 25 (7.5) 50 (15) 100 (30) 150 (45)
02 1818 18 16
23 1818 16 14
34 1818 16 14
*If the input rating of a battery charger is given in watts rather than in amperes, the corresponding ampere
rating is to be determined by dividing the wattage rating by the voltage rating–for example:
1,250 watts
125 volts
=
10
amperes
9. Do not operate battery charger with damaged cord or plug – replace them immediately.
10. Do not operate battery charger if it has received a sharp blow, been dropped, or otherwise damaged in any
way; take it to a qualified serviceman.
11. Do not disassemble battery charger; take it to a qualified serviceman when service or repair is required.
Incorrect reassembly may result in a risk of electric shock or fire.
12. To reduce risk of electric shock, unplug charger from receptacle before attempting any maintenance or
cleaning. Removing the battery will not reduce this risk.
IMPORTANT SAFETY INSTRUCTIONS FOR USE OF THE BATTERY AND BATTERY CHARGER
You must charge the battery before you can use the cordless impact wrench. Before using the model UC14YFA or
UC24YFA or UC18YG or UC18YRL battery charger, be sure to read all instructions and cautionary statements on
it, the battery and in this manual.
REMEMBER: USE ONLY HITACHI BATTERY TYPES EB7 SERIES, EB9 SERIES, EB12 SERIES, EB14 SERIES. EB18
SERIES, EBL1430 AND EBM1830. OTHER TYPES OF BATTERIES MAY BURST AND CAUSE INJURY!
Follow these instructions to avoid the risk of injury:
WARNING:
Improper use of the battery or battery charger can lead to serious injury. To avoid these injuries:
1. NEVER disassemble the battery.
2. NEVER
incinerate the battery, even if it is damaged or is completely worn out. The battery can explode in a fire.
3. NEVER short-circuit the battery.
4. NEVER insert any objects into the battery charger’s air vents. Electric shock or damage to the battery
charger may result.
5. NEVER charge outdoors. Keep the battery away from direct sunlight and use only where there is low
humidity and good ventilation.
6. NEVER charge when the temperature is below 32°F (0°C) or above 104°F (40°C).
7. NEVER connect two battery chargers together.
8. NEVER insert foreign objects into the hole for the battery or the battery charger.
9. NEVER use a booster transformer when charging.
10. NEVER use an engine generator or DC power to charge.
11. NEVER
store the battery or battery charger in places where the temperature may reach or exceed 104°F (40°C).
12. ALWAYS operate charger on standard household electrical power (120 volts). Using the charger on any
other voltage may overheat and damage the charger.
13. ALWAYS wait at least 15 minutes between charges to avoid overheating the charger.
14. ALWAYS disconnect the power cord from its receptacle when the charger is not in use.
CAUTION ON LITHIUM-ION BATTERY
To extend the lifetime, the lithium-ion battery equips with the protection function to stop the output.
In the cases of 1 and 2 described below, when using this product, even if you are pulling the switch, the motor
may stop. This is not the trouble but the result of protection function.
1. When the battery power remaining runs out, the motor stops.
In such case, charge it up immediately.
2. If the tool is overloaded, the motor may stop. In this case, release the switch of tool and eliminate causes of
overloading. After that, you can use it again.