Solution System 140Service Manual – SC6500
™
Solution Tank
The Solution Tank holds 70 gallons (265 l) of solution. The solution ll cover opens to allow you to ll the
Solution Tank. The solution empty switch is a oat switch that closes and sends a signal to the A2 Control
Board Assembly when the solution level in the Solution Tank falls to two to three inches from the bottom of
the tank. The solution system indicator will ash to remind the operator of the low-solution condition, but
the machine will continue to function.
Shutoff Valve
The Shutoff Valve allows you to shut off the solution ow from the Solution Tank for cleaning and maintenance.
Drain Hose and Hose Cap
The Drain Hose allows you to drain the solution tank. To drain the tank, remove the Drain Hose Cap.
Solution Filter
The in-line Solution Filter prevents any sediment or debris from reaching the solution control pump and
solution solenoid valve. The Solution Filter can be disassembled for cleaning.
Solution Control Pump
The Solution Control Pump pumps the solution through the solution solenoid valve to the nozzles adjacent to
the scrub brushes. The Solution Control Pump gets PWM voltage from the A2 Control Board to regulate the
Solution Control Pump speed and the corresponding solution ow.
Solution Solenoid Valve
The Solution Solenoid Valve opens to allow solution ow to the scrub brushes. Although the Solution Solenoid
Valve
gets PWM voltage from the A2 Control Board, it remains full-open when the solution pump is switched
on.
Solution Manifold (disc decks only)
The Solution Manifold distributes the solution from the solution pump to the nozzles adjacent to the scrub
brushes.
Accessory Pump
The accessory pump is included in the optional Spray Wand Kit and pumps solution to the spray wand. The
pump has its own pressure switch that switches the pump on or off automatically when the wand trigger is
pressed or released.
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