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30 - Solution System
Functional Description
The SC6000 solution tank is incorporated directly
into the main body of the machine. A series of 4 float
switches serves as a level indicator for the amount
of solution in the tank The outlet of the tank has
a manual shutoff valve so that components can be
serviced without solution flowing out of the tank. Just
downstream from the shutoff is a filter element to
prevent debris from entering other components of the
system
The supply hose leads to the scrub deck, where the
solution solenoid meters fluid delivery. The supply
hose is a specially molded tube that also contains
fittings for the optional EcoFlex detergent inlet and
the option pump outlet for either wash hose or dust
control pumps
Shutoff Valve
A bidirectional shutoff valve permits the solution
flow to be shutoff, directed toward the scrub deck, or
directed toward the drain hose. The flow is off when
the handle is perpendicular to the body When the
handle is parallel to the body, it could be pointed
either way, so it is best to confirm the desired
position
Solution Solenoid
The solution solenoid is located downstream from
the solution filter, and activates to allow solution to
flow to the scrub deck. To prevent pooling of excess water on the floor when the machine is stationary, the
solenoid output from the controller is disabled when the wheel drive is not active. The rate of solution flow is
controlled by cycling the solution solenoid on and off at varying duty cycles
Solution Level Sensors
Even though the solution level sensor is a single physical component, it is internally comprised of 4
independent reed switches and floats. Each float has a magnetic ring that activates the reed switch when
it is in proximity to the switch All 4 switches have a common ground, but they each have their own
independent return wire back to the main controller
As an assembly, the floats and reed switches operate in the Normally-Closed configuration (fluid-wise), but
the reed switches themselves are configured as Normally-Open if the float was completely missing. If no fluid
is present to raise the float, then the float’s magnetic ring lines up with the reed switch, and the switch is
active and closed
Wash Hose Option
The wash hose option uses an on-demand fluid pump at the rear of the machine to drive pressurized water
to the flexible wash hose. The pump itself monitors the output for fluid flow by pressure drop, and activates
when the operator uses water The inlet to this pump is in the solution hose, but upstream from the solution
solenoid The Dust Guard option cannot be added to a machine that has wash hose
Level
Sensors
Fill Cap
Solution
Tank
Solution
Solenoid
Supply
Hose
Drain
Hose
Filter
Shutoff
Valve
EcoFlex
System
