MAINTENANCE
4-12 / Husky 3 Foam System
© 2022 Pierce Manufacturing Inc. All Rights Reserved.
Question Reason for Question Test Procedure
H. Is the system voltage OK? Voltage at the control
head must be within .2 volt
of the battery voltage for
the foam system to
operate.
NOTE: Refer to “System Diagrams”
on page 4-23 for additional
circuit information.
• Check the voltage at the battery.
1148
• Check the voltage at the control head, ckt#
2878, pin 7 and ckt# 1640, pin 15. Voltage
at the control head should be within .2 volt
of the battery voltage.
1146
Repair wiring, poor
connections, loose pins, etc.
No
Yes