User manual AKG CU 4000

[. . . ] 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)/receiver(s) and/or BP 4000 Battery Pack(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. [. . . ] The BP 4000 is being charged and the RECOVER key is being pressed. the BP 4000 is fully charged , and a recovery cycle is recommended. The BP 4000 is fully charged; the RECOVER key is being pressed. (Table 1) CHARGE >red/orange< green RECOVER red green Status Recovery cycle: the BP 4000 is being discharged. Although the BP 4000 is fully charged, it has aged to the point that its capacity cannot be accurately calculated anymore. Due to the specific shapes of the charging slot and the BP 4000, you can only insert the BP 4000 in the correct orientation. If the batteries inside the transmitter/receiver are dry or standard rechargeable types, do not try to charge them. The transmitter/receiver will remain in SILENT mode and power down automatically as you remove the transmitter/receiiver from the charger. One hour and proportionately less for partially discharged batteries. You may remove the device or BP 4000 from the charger. The charging cycle will start automatically as soon as you insert a transmitter or receiver with a BP 4000 inside or a BP 4000 into the charger. 5 Initial Charging Cycle for New or Deep-discharged Battery Packs Table 3: Charging a new or deep-discharged BP 4000 (residual voltage too low) The BP 4000 is Hold the RECOVER being charged and key for at least the RECOVER LED 3 seconds. Indicates the RECOVER key is being pressed. Recovery cycle: the --BP 4000 is being charged for the second time. Recovery cycle: the --BP 4000 is being charged for the third time. The entire initial charging cycle takes about 15 to 17 hours. note: · If you do not press the RECOVER key, the BP 4000 will be charged normally upon initialization. Partially discharging the BP 4000 many times may reduce its capacity (memory effect) or affect the accuracy of the remaining-capacity display. (The remaining battery capacity will only be indicated by the bar graph. ) Once you insert the device into the charger, the RECOVER LED will start flashing orange. These messages request you to start a recovery cycle as soon as possible. The charger will not perform a recovery cycle before you have pressed the RECOVER key for at least 3 seconds. [. . . ] Avoid charging the BP 4000 at temperatures below +5°C or above +40°C. At these temperatures, the charging cycle will not start and the CHARGE LED will start flashing red. ) with water to clean the surfaces of the charger. ⷠNever use caustic or scouring cleaners or cleaning agents containing alcohol or solvents since these may damage the enamel coat or plastic parts. [. . . ]