Nilfisk-Advance CS7000 Fuel Cell EcoFlex, Service Manual

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Hopper System 258 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 hopper will not
rise or lower.
An interlock is not closed. Before you start troubleshooting the hopper 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 (battery machines only).
• The A1 Main Machine Controller is receiving the
appropriate signal from the A3 Control Panel via
the CAN BUS.
There is no voltage to the
K11
and
K12
contactor coils.
Check circuit breaker
CB1 and
reset if necessary.
The contactor
K9
is not providing positive voltage to
the
K11
and
K12
contactor coils.
1. Check the
K9
contactor coil resistance. If the coil
resistance is not 118 ohms ± 10%, replace the
contactor.
1. Check the continuity through contactor
K9
with the
coil energized. If the contacts are open, replace
the contactor.
1. Check the
J2-28
and
J2-24 Outputs
from A1 Main
Machine Controller.
There is no voltage to the
Hydraulic Pump/Motor
Assembly
M10
.
Check circuit breaker
CB8 and
reset if necessary.
The contactors
K11
and
K12
are not providing
voltage to the Hydraulic Pump/Motor Assembly
M10
.
1. Check the coil resistance on the
K11
and
K12
contactor. If the coil resistance is not 117 ohms ±
10%, replace the contactor.
1. Check the continuity through contactors
K11
and
K12
with the coil energized. If the contacts are
open, replace the contactor.
2. Check the
J2-28
and
J2-24 Outputs
from A1 Main
Machine Controller.
Check the motor wiring and connections from
contactors
K11
and
K12
to the hydraulic pump motor,
and the ground connections from the contactors to
battery ground. Repair as necessary.