Nilfisk-Advance Advance SC400 Service Manual

Also see for Advance SC400: Operating guide Operating guidelines Instructions for use

Nilfisk-Advance Advance SC400 Service Manual Manual pdf 32 page image

Electrical System32Service Manual – SC400Electrical SystemFunctional DescriptionBasically the electrical system consists of a functionelectronic board (EB1) which determines the brushmotor, vacuum system motor and solenoid valve acti-vation by means of the relevant controls (rotary switch(SW1) and brush activation push-button (SW2)), dis-abling them when the battery voltage drops below thebattery safety threshold valueThe batteries are connected to the system by means ofthe ANDERSON POWER connector (C1)The battery charger (CH) is connected to the batteries(BAT) directly on the – and + terminals and it sup-plies the enabling signal to activate the machine func-tions only when it is disconnected from the electricalmains with the J4 2-way connector When the batterycharger is connected to the electrical mains, the bat-tery charger inner relay opens the contact and stopsthe enabling signal on the J4 connectorFor further details, see the descriptions of individualsub-systemsFusesThe brush motor circuit is protected from short-cir-cuits by the 40A fuse (F1) The motor is protectedfrom overloads by means of the electronic protectionsystem described in the Function Electronic BoardSpecifications chapter.The vacuum system motor circuit is protected by the30A fuse (F2)The solenoid valve (EV1) and the function electronicboard (EB1) control circuits are protected by the 5Afuse (F3) on the function electronic board (EB1)The brush release circuit is protected by the 20A fuse(F4) on the function electronic board (EB1)(Only for 9087311020 - 9087318020 models) The125A battery fuse (F0) is assembled directly on the+ terminal of the battery and jump connected to thenegative terminal of the other This fuse operates onlyin case of short circuits on the machine power wiringharness, to prevent fire or battery explosion.Wiring DiagramFUNCTION ELECTRONICBOARD (EB1)24V BATTERY (BAT)J4.1 - Battery charger enabling power supplyJ4.2 - Battery charger enabling returnBATTERY FUSE (F0)BATTERY CHARGER (CH)BATTERYCONNECTOR (C1-) BATTERYCONNECTOR (C1+)+ 24VP200076