Nilfisk-Advance CS7000 Fuel Cell EcoFlex, Service Manual

Page: 387 / 440

Sweep System, Main 387 Service Manual – CS7000
Troubleshooting
Note: You can use the Service Mode to toggle the various system components on and off to check for
function. Refer to the Control System/Service Mode section for information on how to enter
and use the Service Mode.
Problem Cause Correction
The main sweep
system is not
operating correctly.
An interlock is not closed. Before you start troubleshooting a specific system,
check to make sure:
• The emergency stop switch (
S15
) on the Operator
control panel is disengaged (rotate clockwise).
• The safety relay from the steering system (
K14
) is
closed.
• The seat switch (
S9
) is closed.
• The battery interlock proximity sensor (
S13
) is
closed.
• The A1 Main Machine Controller is receiving the
appropriate signal from the A3 Control Panel via
the CAN BUS.
The main broom
motor will not run.
The 150-amp Fuse (
F2
) is
blown.
Check the Fuse (
F2
) and replace if necessary.
The hopper is overfilled or is
“lip loaded”.
Check for a fault code 54 - Main Broom Motor
Overload. If you see fault code 54, empty the hopper.
There is no voltage to the
K4
contactor coil.
1. Check circuit breakers
CB1
and
CB3
and reset if
necessary.
2. Check the
K9
contactor coil resistance. If the coil
resistance is not 118 ohms ± 10%, replace the
contactor.
3. Check the continuity through contactor
K9
with the
coil energized. If the contacts are open, replace
the contactor.
4. Check the
J2-16
output from A1 Main Machine
Controller.
There is no positive voltage to
the broom motor.
1. Check the wiring and connectors from the load
side of contactor
K4
to the broom motor and
repair as necessary.
2. Check the
K4
contactor coil resistance. If the coil
resistance is not 118 ohms ± 10%, replace the
contactor.
3. Check the continuity through contactor
K4
with the
coil energized. If the contacts are open, replace
the contactor.
There is no ground connection
to the broom motor.
Check the wiring and connectors from the broom motor
to battery ground repair as necessary.