Nilfisk-Advance CS7000 Fuel Cell EcoFlex, Service Manual

Page: 307 / 440

Scrub System 307 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 scrub system
does not operate.
An interlock is not
closed.
Before you start troubleshooting the scrub 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.
None of the scrub
deck motors will run.
The 150-amp Fuse
(
F2
) is blown.
Check the Fuse (
F2
) and replace if necessary.
There is no voltage
to the
K1
,
K2
and
K3
contactor coils.
Check circuit breaker
CB1
and reset if necessary.
The contactor
K9
is not providing positive voltage to the
K1
,
K2
and
K3
contactor coils.
1. Check the
K9
contactor coil resistance. If the coil
resistance is not 118 ohms ± 10%, replace the contactor.
2. Check the continuity through contactor
K9
with the coil
energized. If the contacts are open, replace the contactor.
3. Check the
J2-14
output from A1 Main Machine Controller.
An individual scrub
deck motor will not
run.
There is no voltage
to the corresponding
contactor coil (
K1
/
K2
/
K3
).
1. Check the coil resistance in the
K1
/
K2
/
K3
contactor coil.
If the coil resistance is not 118 ohms ± 10%, replace the
contactor.
2. Check the continuity through contactor
K1
/
K2
/
K3
with
the coil energized. If the contacts are open, replace the
contactor.
3. Check the
J2-25
/
J2-26
/
J2-27
output from A1 Main Machine
Controller.
There is an open
circuit in the scrub
motor wiring.
Check the motor wiring and connections from contactor
K1
/
K2
/
K3
to the motor, and the ground connection from the
motor to battery ground. Repair as necessary.
The motor is not
operating correctly.
Replace the scrub deck motor.
The scrub deck
actuator is not
raising and lowering
the deck.
There is an open
circuit in the deck
actuator motor
wiring.
Check the wiring and connections from the A1 Main Machine
Controller to the scrub deck actuator motor and repair as
necessary.
There is no voltage
output from the
A1 Main Machine
Controller.
Check the output from
J2-10
and
J2-11
from the A1 Main
Machine Controller.