INSTRUCTION MANUAL FOR USE AND MAINTENANCE08812946(3)2003-08 7DIAGRAMSWiring diagrams, for different optional equipments (seeFig. I and J);LegendCH1 Battery chargerC1 Battery connectorEB1 Electronic board (CFBA430)EB2 LED board (CFBALED)EB3 Traction electronic boardES1 Brush electromagnetic switchES2 Vacuum electromagnetic switchEV1 Water solenoid valveF1 Brush fuse (50A)F2 Vacuum fuse (40A)F3 Water valve & electronic fuse (5A)F4 Traction fuse (30A)IS1 Negative insulatorIS2 Positive insulatorK1 Key switchM1 Brush motorM2 Vacuum motorM3 Drive motorR1 Drive speed governorSW1 Brush switchSW2 Vacuum switchSW3 Traction control micro-switchSW4 Drive motor micro-switchColor codeBK BlackBU BlueBN BrownGN GreenGY GreyOG OrangePK PinkRD RedVT VioletWH WhiteYE YellowELECTRICAL PROTECTIONSFusesBrush safety fuse (50 A): (1, Fig. G)Aspirator fuse (40 A): (2, Fig. G)Solenoid valve fuse (5 A): (3, Fig. G)Traction fuse (30 A): (8, Fig. G) (*)Electronic board protection fuse (2A): (9, Fig. G) (*)(*) “20BT” versions onlyBrush motor overload protection electronic systemThis system works when the brush motor is overloa-ded.Its operation is signaled by the three warning lightsflashing at the same time (2, 3, 4, Fig. B); after a few se-conds, the brush motor stops.In order to restart the motor, it is necessary to eliminatethe cause of the overload, which can be:– the brush is too much pressed on the floor– the brush is blocked by floor roughness or by aforeign body– the brush rotation is slowed down by dirt, ropes orrags around its rotation shaft– the friction between brush and floor is excessive(increase the detergent quantity by means of theappropriate adjusting lever (7, Fig. B))Once the overload cause has been eliminated, resetthe system as indicated here below:– (20B versions) stop the machine by turning switches(5 and 6, Fig. B) to "0".– (20BT versions) stop the machine by turning theignition key (9, Fig. B) to "0".After that, the machine can be restarted again, as de-scribed in the related chapter.Drive motor overload protection electronic system(20BT versions only)This system works when the drive motor is overloaded.Its operation is signalled by the drive motor stopping.After a while, the system can be reset by stopping themachine by turning the ignition key (9, Fig. B) to "0".After that, the machine can be restarted again, as de-scribed in the related chapter.ACCESSORIES / OPTIONSIn addition to the standard components, the machinecan be equipped with the following accessories/op-tions, according the machine specific use:1. Gel batteries.2. Brush of materials different from the standardones.3. Pads of two different materials4. Squeegee oil-proof blades.For further information concerning the optional acces-sories apply to an authorized retailer.https://harrissupplyind.com - To Order Parts Call 608-268-8080