Factory Cat MINI-MAG SERIES, Service Manual

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Magnum Service Manual V1.0
6
6-2
SOLUTION SYSTEM
SOLUTION SYSTEM ELECTRICAL CIRCUIT
The two types of MiniMAGs have very different solution system circuits.
BRUSH ASSIST
The electrical circuit of the MiniMAG brush assist series is a very basic design. It consists of
the handlebar button, the solution switch, the brush switch and the brush relay. When the
brush switch and the solution switch are turned on and the handle bar button is depressed
a signal is sent to the brush relay causing it to turn on. When the brush relay turns on it
sends power to both the brush motor and through the solution switch to the solution solenoid.
When the solution solenoid is energized it opens the liquid valve allowing solution to run out
of the machine onto the floor.
TRACTION DRIVE
The electrical circuit of the MiniMAG traction drive series is divided into two parts. The input
circuit and the output circuit. The input circuit consists of the controller, the scrub switch
and the solution potentiometer. The controller produces a high (5 volt) and a low (0 volt)
signal that is sent to the potentiometer the potentiometer outputs a varied voltage from 0 to 5
volts. The controller also sends a 5 volt signal to the scrub switch. When the scrub switch is
turned on this 5 volt signal is sent to the scrub input on the controller and the controller then
looks at the input from the solution potentiometer. When either handle bar button is pushed
the controller then starts the scrub brushes and sends pulses of electricity to the valve. The
ADJUSTING SOLUTION FLOW -
TRACTION DRIVE
To adjust the solution flow use the solution
potentiometer located on the control panel. To
increase the amount of solution turn it counter
clock wise. To decrease the amount of solution
being dispensed turn it clockwise. Changing
the amount of solution dispensed is done by
changing the amount of time the solution sole-
noid valve is open for every second.
SOLUTION
KNOB
ADJUSTING SOLUTION FLOW -
BRUSH ASSIST
To adjust the solution flow use the solution
knob located on top of the solution solenoid
on the brush deck. To increase the amount of
solution turn it counter clock wise. To decrease
the amount of solution being dispensed turn it
clockwise.