Clarke Clean Track® L24 56317170 Service Manual page 23

- (Negative) circuit input starts with:
• Battery negative ground inputs at the A1 Control Board and A2 Speed Control Ground terminals.
• The A1 control board solution button enabled.
• A negative voltage output from the A2 speed controller's (pin #6) RED/BLK wire to the A1 control board RED/BLK
wire (terminal J1-5). Note that the A2 speed control Brake output (pin #6) occurs whenever the R1 direction throttle
pot is moved off its neutral setting.
A negative voltage output from terminal J1-6 GRN/BLK wire is direct to the M1 Solution Pump turning it on to allow
flow to the L1 and L2 Solenoids. Note that the voltage should be the same when one or two nozzles are actuated. The
voltage is a PWM signal at 10KHz.
Figure 5
RED
CB1
GRN BRN/WHT
x
Circuit Breaker, 10 A.
Note: Switch is Part
of Pump Assembly
CB 2
RED WHT/YEL
x
Circuit Breaker, 30 A.
F1
RED
Fuse, 150 A
Onboard
Battery Charger
RED
B+
GRN
Interlock
S1
Switch, SPST Key
L1
BRN
Coil, Solution Solenoid I
L2
BRN
Coil, Solution Solenoid II
M1
S3
BRN
M
Solution Pump
A2 1228 Speed
Control
BRN
Pin 5 - KSI
RED/BLK
Pin 6 - Brake (-)
BLK
B+ B-
BT1
BLK
+ -
J2-4
BRN/WHT
+
B+ Unswitched
BRN J2-8
+
B- Switched
RED/GRN J1-2
Solution I
YEL/GRN J1-4
Solution II
GRN/BLK J1-6
Solution Pump
J1-8
For./Rev.
Form No. 56043161 - Clean Track
A1 Control Board
Ground
BLK
L24 - 23
®