User manual AKG CU 40

[. . . ] If you will not use the charger for a long period of time, disconnect the AC adapter from power. Do not place the equipment 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. Clean the equipment with a mois- Be sure to disconnect the AC adapter from the power outlet before cleaning the equipment! [. . . ] Special charging contacts on the bottom of each charging receptacle automatically close the charging circuit for the battery inside the device you inserted. If anything is missing, please contact your AKG dealer. Check that there is a battery inside the transmitter. Important: Never try to charge dry (non-rechargeable) batteries. These will become very hot and may damage the transmitter by chemical reactions. Check that the AC mains voltage stated on the supplied AC adapter is identical to the AC mains voltage available where you will use your system. Using the AC adapter with a different AC voltage may damage the unit. 2): To prevent the charger from toppling and the transmitter from falling out of the charger, disconnect the SO 40 from the microphone before inserting the SO 40 into the charger. As soon as you place the transmitter (1) in the charging receptacle (2) charging will start automatically. 3: MP 40 status LED (3) will illuminate green for about one second and then change to constant red. The battery will be fully charged after a maximum period of one hour. Should you forget to remove the transmitter, do not panic: charging 4: GB 40 will switch off automatically and you can leave the transmitter in the charging receptacle for as long as you like without risking to overcharge the battery. , during the lunch break at a conference or between the soundcheck and concert: 1. This is long enough to charge the battery to capacity. If the LED starts glowing GREEN CONSTANTLY immediately after inserting the transmitter, you inserted the transmitter the wrong way. 1 second and then glow red constantly for 3 minutes while the battery is tested automatically. The battery inside the transmitter is being charged. If the transmitter switches off after a few minutes of operation, the battery is totally discharged. [. . . ] Leave the charger connected to power to trickle-charge the battery. If you will not use the transmitter For more than one month, charge the battery to capacity, store it separately from the transmitter, and disconnect the AC adapter from power. Note: Never charge batteries at temperatures below 0°C or above +50°C. Below 0°C, the chemical reaction for storing electrical energy will not start. [. . . ]