User manual AKG CU 400

[. . . ] Be sure to disconnect the charger from power before cleaning the charger!Never use caustic or scouring cleaners or cleaning agents containing alcohol or solvents since these may damage the enamel and plastic parts. AKG cannot accept any liability for damages resulting from improper handling or misuse. The charger will draw a low current even when the charging mode is off. [. . . ] Indicators DC input There is one STATUS LED in front of each charging slot. Check that the AC mains voltage stated on the included power supply is identical to the AC mains voltage available where you will use your system. Using the power supply with a different AC voltage may damage the unit. Do not use any power supply other than the AC adapter supplied with the charger. 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. 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. 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. Insert the transmitter into the charging slot so that the display on the transmitter faces the LEDs on the charger. 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 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. 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. [. . . ] One or more charging contacts fail to make contact with the transmitter. Disconnect power supply or DC cable, wait for 10 seconds, and connect again. Remove transmitter from charging slot; replace dry with rechargeable battery. Allow battery/charger to cool down, charging cycle will resume when temperature returns to acceptable range. [. . . ]