28Service Manual – SC900
24 - Electrical System
Functional Description
Battery
Charger
Detergent
Pump
Battery
Disconnect
Electrical
Box
EcoFlex
Control
The SC900 machine is powered using six, 6-volt
batteries connected in series, for a total system
nominal voltage of 36 volts. To protect the batteries
from over discharge, the system is protected with
a 150 amp fuse located on the positive battery
terminal.
There are 5 circuit breakers that protect the
electronics. A 25A circuit breaker protects each of the two
brush motors, a 20A circuit breaker protects the vacuum
motor, a 30A circuit breaker protects the drive controller
(and therefore the scrub system controls), and a 2.5A circuit
breaker protects all logic circuits downstream from the key
switch. If these circuit breakers trip, their respective button
will pop up. Pressing the button back in after the overload
has cleared will reset the breaker.
150 A
Fuse
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