User manual MAKITA BTW121

[. . . ] iMPORTANT SAFETY INSTRUCTIONS FOR CHARGER & BATTERY ENC002-3 ADDITIONAL SAFETY RULES FOR CHARGER & BATTERY CARTRIDGE 1. Do not charge battery cartridge when temperature is BELOW 10°C (50°F) or ABOVE 40°C (104°F). Do not attempt to use a step-up transformer, an engine generator or DC power receptacle. Do not short the battery cartridge: (1) Do not touch the terminals with any conductive material. [. . . ] With finish of charge, the charging lights will change from two red ones to two green ones. 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. You can recharge the battery cartridge fully after discharging it completely and recharging a couple of times. nOTE: • The battery charger is for charging Makita-battery cartridge. Charging will begin after the battery cartridge is cooled by the cooling fan installed in the charger. 70°C, two charging lights may flash in red color, and when approx. 50°C – 70°C , one charging light in red color. €¢ If the charging light flashes alternately in green and red color, charging is not possible. The terminals on the charger or battery cartridge are clogged with dust or the battery cartridge is worn out or damaged. 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. €¢ 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. 50°C – 70°C , one charging light in red color. €¢ The products should be sent to repair or maintenance, if the yellow warning light will frequently flash. 5 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. 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. Always stop tool operation and charge the battery cartridge when you notice less tool power. Charge the battery cartridge with room temperature at 10°C – 40°C (50°F – 104°F). [. . . ] The proper fastening torque may differ depending upon the kind or size of the bolt. The relation between fastening torque, fastening time and number of the impacts (dial setting) is shown in the figures. NOTE: • Hold the tool pointed straight at the bolt or nut without applying excessive pressure on the tool. €¢ When fastening screw M8 or smaller, carefully adjust pressure on the switch trigger so that the screw is not damaged. [. . . ]