Nilfisk-Advance CS7000 Service Manual page 102

Service Manual – CS7000 Electrical System 102
"Hybrid" models use a large, engine-driven 42 volt generator for their main power source with a smaller 36
volt battery pack connected in "parallel" with the generator, as a "back up".
When the engine is running the 42 volt generator provides the electrical power to operate the 36v machine
electrical loads as well as recharge the 36v battery pack. If the machine demands more current than the 42
volt generator can provide, the 36 volt battery pack supplies the extra boost that is needed. If the engine is
not running the machine can work for a limited time on just the 36 volt battery pack The main machine uses
a 36v supply to operate some 36v electrical loads.
36V Battery Pack
36V "Machine" Electrical
Loads
42V Alternator
Main Machine
Controller
Hybrid Power Supply
Hybrid models also have a separate 12 volt starting battery.
The main purpose of the staring battery is to start the engine. The engine drives a separate 12 volt generator
(Alternator) to recharge the starting battery and supply power for 12v engine electrical loads. The main
machine controller is supplied a 12v power source which it uses to control some 12v engine electrical devices.
12V Starting Battery
Engine Electrical Loads
12V Alternator
Main Machine
Controller
12v Power Distribution - Engine models only