Starting Module Status Led; Troubleshooting; Maintenance; Handling And Storage - PREVOST H3-41 Maintenance Manual

SECTION 06: ELECTRICAL
WARNING
The Starting Module is a product of high
electric power. Avoid
terminals!
Place ignition switch to the "ON" position (Figure
60)
Press and hold engine start switch (Figure 60)
until engine is running and keep holding
minimum of 3 seconds after engine run.
Holding the switch provides the circuit with
power coming from the starting module.

11.2 STARTING MODULE STATUS LED

The bi-color (red/green) LED is an indicator for
how the starting module is functioning. The
green side of the LED is connected parallel with
the contactor. The red side is connected to an
output on the module's programmable logic
controller (PLC).
Green: Anytime the LED Status Indicator is
illuminated green, the contactor is closed. In a
typical engine-starting event you will see the
LED illuminate during engine cranking and then
go out for several seconds after the engine has
started. The LED will then illuminate again and
could remain illuminated for several seconds
based on the condition of the module. The LED
may "cycle" depending on the vehicle or system
voltage during the recharging events.
Red: The PLC monitors the capacitor voltage
during and after the recharge cycle. If the
capacitor voltage drops to below an acceptable
level in the first 5 minutes after the recharge, the
red LED will flash, indicating a fault.
If at any time while the PLC is powered up, the
5A circuit breaker trips or the capacitor voltage
level drops below 4 volts the red LED will flash.
(Source: KBI)
WARNING
The starting module is a polarity sensitive
device. Polarity should be strictly observed
when connecting the KAPower module into
any circuit
72 PA1621 Maintenance Manual All Series | Revised Sept 2019
shorting module

11.3 TROUBLESHOOTING

Refer to supplier manual KSM Starting Module
Manual RevD.pdf from KBI on the technical
publications web site or on the technical
publications USB drive for troubleshooting
instructions.

11.4 MAINTENANCE

Regularly inspect the wiring and bus bar
connections to make sure they are clean and
free of corrosion.
1/2-13 power stud nut torque:
180 lb-in (20 Nm)
3/8-16 12V power stud torque:
212 lb-in (24 Nm)
M10-1.5 bus bar ground stud:
240 lb-in (27 Nm)

11.5 HANDLING AND STORAGE

CAUTION
Module should be stored at a minimum voltage
of 8V for the 24V circuit and 4V for the 12V
circuit.
NOTE
The starting module is not a high-voltage
device. It simply supplies the same voltage
that it was charged up to. Handle it with the
same respect you would give to a fully
charged battery.