User manual AKG CU 400

[. . . ] If you will not use the charger for a long period of time, disconnect the charger from power. To prevent unwanted discharging, be sure to remove the transmitter(s) from the charger every time you disconnect the charger from power. Do not place the charger near heat sources such as radiators, heating ducts, or amplifiers, etc. And do not expose it to direct sunlight, excessive dust, moisture, rain, mechanical vibrations, or shock. [. . . ] Never connect the CU 400 charger to the PSU 4000 central power supply because the output voltage of the PSU 4000 is incompatible with the CU 400. Rechargeable batteries (those included or those you may buy later) are delivered uncharged or partially charged. Therefore, you will need to charge each new battery before using it. each charging slot features a tricolor STATUS LED that indicates the current operating status of the respective charging slot (">. <" marks an LED flashing in the respective color): STATUS LED --orange red green >red< Status The charger is ready to operate, no transmitter is inserted in the charging slot. The battery inside the inserted transmitter is being checked. If there is no battery inside the battery compartment, do not place the transmitter in a charging slot before you inserted a rechargeable battery into the transmitter. Make sure to switch the transmitter OFF before placing it in a charging slot. This is the only way to guarantee optimum charging. Insert the transmitter into the charging slot so that the display on the transmitter faces the LEDs on the charger. Never switch the transmitter ON during the charging cycle. This may cause the charger to falsely indicate a completed charging cycle before charging is actually completed. The charging cycle will start automatically as soon as you insert a transmitter with a rechargeable battery into the charger. 5 hours for a completely discharged battery and proportionately less for a partially discharged battery. You may remove the transmitter from the charger. You may safely remove the transmitter at any time before the charging cycle is completed. You may safely charge the battery inside the transmitter at any time, even before the battery is completely discharged. At ambient temperatures above +40°C, the charger may overheat. As a result, the charging cycle may take considerably longer or stop altogether (STATUS LED flashing red). As soon as the ambient temperature drops below +40°C, the charging cycle will be resumed automatically (STATUS LED will be lit red). If the battery heats up to more than +60°C during a charging cycle (e. Most batteries will be unusable after being heated up to more than +60°C. [. . . ] Inside temperature of charger is too high. Make sure there is enough free space around charger to provide adequate heat dissipation. Use original AC adapter supplied with supply whose output voltage is too high: charger. 7 A if both slots are used simultaneously typ. [. . . ]