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Service Manual – Advance SC1500
Electrical System
Functional Description
Overview
The electrical system consists of the switches, circuit breakers and contactors mounted on and underneath
the control panel assembly, the 150-amp main fuse, on-board battery charger (if so equipped) and the
batteries.
The electrical system is powered by two 12-volt or four 6-volt batteries for a total of 24 volts. Heavy cables
connect the batteries in series. On machines without an on-board battery charger, a large red main battery
pack connector is used for connecting the batteries to a “shelf” battery charger unit.
The control system will turn off the scrub system and recovery systems if the battery voltage drops too low to
prevent damage to the batteries due to excessive discharging.
The circuit breakers and a 150-amp fuse protect various circuits from excessive current.
The machine wiring is color coded, and the wires are
marked corresponding to their location on the
Harness Diagram (Current)” on page
the Brush Contactor K2 is shown in this example.)
On-board Battery Charger
An optional on-board battery charger is mounted on the bottom of the machine. Early models used an S.P.E.
charger and later models use a Delta-Q IC650 charger.
Delta-Q Charger
S.P.E. Charger