MAINTENANCE EVERY 50 OPERATING HOURS 27.4.1 RE-CHARGING A BUILT-IN BATTERY Disconnect the cable of the negative pole before re-charging or pull the battery main switch, in order to interrupt the power supply. Otherwise, the alternator will be damaged due to high voltage peaks. Remove all battery plugs before re-charging to ensure sufficient ventilation. To prevent gas explosions, do not come near the battery with fire and do not produce any sparks. Interrupt the charging process if the temperature of the battery acid exceeds 113°F (45° C). Switch off the battery charger, as soon as the battery is re-charged. If the battery is overloaded, the following situations may occur:
1 - The battery may be overheated 2 - Decrease in the battery acid volume 3 - Damage of the electrode plates. Do not mix up the cables (positive (+) and negative (-)). Before performing maintenance operations, remove all cables from the battery poles. Only exceptions: acid lev- el check or the measurement of the specific density. 159