Solution System 166
Service Manual – SC8000
Circuit Descriptions
Main Solution System
The
Solution Pump M4
and
Main Solution Solenoid Valve L10
control the solution flow to the scrub brushes. Note
that
L10
is not a proportional valve and is either on or off. The voltage from
J3-2
on the Driver Box to the
Solution Pump M4
is a PWM voltage proportional to the selected solution flow rate. The following conditions
must be met to allow the main solution system to operate:
• The
Driver Box
must receive a signal from the
Dashboard Panel
via the CAN Bus that the Operator has
actuated the scrub or solution system.
• The
Driver Box
must receive a signal from the
Drive Pedal Sensor R1
that the drive pedal has been moved
from the neutral position.
• The
Solution Empty Switch S3
must be open (solution tank not empty).
Fuse, 100A
Relay, Power
Dashboard Panel
Driver Box
K1
Battery
12 VDC
F1
Circuit Breaker, 15A
CB6
K1
B1
B+
3
B
Relay, Power
J2-1
Ignition_KeyPos
J1-12
S1
Switch, Ignition
J1-3 CAN +
J1-2 CAN -
J6-3 CAN +
J6-1 (B+)
J6-2 (B-)
J6-4 CAN -
Twisted Pair
Twisted Pair
1
87
30
2
1
2
J1-10
J1-31
J1-11
1
3
2
Drive Pedal Sensor, 5K Ohm
R1
J3-2
J2-22
CB4
Circuit Breaker, 20A
CB5
Circuit Breaker, 10A
+
-
M4
M
Pump, Solution
Valve, Main Solution
L10
1
2
J1-21
Switch, Solution Empty (closes when the
solution tank is empty)
1
2
S3
Bat -
B- (ground)
Bat - (PWM)
