28 English 5.906-468.0 Rev. 00 (02/09)6.3 Legend of the electrical componentsA1 Control boardA2 Operating panel boardA3 Circuit Board, safety sensor (option)B1 Magnetic sensor, drive controlB2/B3 Ultrasound sensors, transmitter/receiver (option)D1 LED (green), suction turbine OND2 LED (green), water pump OND3 LED (red), brush overloadD4 LED (red), wastewater tank fullD5 LED (red), brakeD6 LED (red), batteryF1 Main switch (125 A)F2 Fuse, control (3 A)F3 Fuse, water pump (7.5 A)F4 Fuse, travel drive (30 A)G1 Battery (24 V / 180 Ah)H1 Beacon lamp (option)K1 Main relayM1 Brush motorM2 Brush motorM3 Drive motorM4 Water pumpM5 Suction turbineM6 Detergent dosing pump (DOSE)S1 Key switchS2 Emergency-stop buttonS6 Microswitch, suction turbineS7 Microswitch, brush headS8 Microswitch for detergent (option)S9 Microswitch, brakeS10 Microswitch, wastewater tankU1 Battery charger (BAT PACK model only)V1 Protective diodeY1 Water stop valveEXT.X1 Central plug