Electrolux WTCS90ERB Service Manual page 79

Electrolux
EFS - Dishwashing Systems Platform
Electrolux Professional
27 The
generated
machines only).
** The Air gap was not completely
30
emptied within the max. emptying
time.
31 The wash tank was not completely
filled within the max. filling time.
32 The pressure sensor on the wash
tank does not work correctly.
** The required temperature in the
33
wash tank was not reached within
the max. heating time.
DOC. NO. 5956.573.05
gear motor inverter has - The inverter or the gear motor
an allarm.(compact doesn't work properly. Possible
machine alarms documented on
1)  overcurrent
2)  motor short circuit
3)  internal fault
4)  configuration fault
5)  overspeed
6)  internal fault
7)  drive overload
8)  motor overload
9)  overvoltage
10) 
deceleration
11)  line phase failure
12)  undervoltage
- The impeller rotation is wrong.
- The non return valve on the air gap doesn't work properly.
- The pressure sensor on the air gap doesn't work properly.
- The air gap air trap is not clean.
- The wash tank water supply cock is not open.
- The water load solenoid valve doesn't work properly.
- The water feed flow is too low.
- The water inlet filter is not clean.
- The pressure sensor on the wash tank doesn't work properly.
- The wash tank overflow has not been inserted.
- The wash tank drain solenoid valve doesn't work properly and remains open.
- The pressure sensor on the wash board doesn't work properly.
- The wash board doesn't work properly.
- The pressure sensor on the wash board doesn't work properly.
- The wash board doesn't work properly.
- A heating element or a heating element branch of the wash board doesn't work properly.
- The wash tank temperature sensor doesn't work properly.
- The wash tank heating element starter controller doesn't work properly or its coil is not correctly
connected to the rinse board.
Possible cause
- ramp too short
- inertia or load too high
- mechanical locking
- insulation fault or short-
circuit at the drive output
- internal fault
- The current configuration is
inconsistent
- some parameters in the
inverter have been modified
- instability or
- driving load too high
- some parameters in the
inverter have been modified
- load relay control fault or
damaged load resistor
- drive temperature too high
- triggered by motor current
too high
- line voltage too high
- disturbed line supply
overvoltage during - braking too sudden or
driving load.
- drive incorrectly supplied or
a fuse blown
- failure of one phase
- unbalanced load
- line supply too low
- transient voltage dip
- damaged load resistor
Remedy
- check the state of the
mechanism.
- check the cables
connecting the drive to
the motor , and the motor
insulation.
- check the environment
(electromagnetic
compatibility).
- send the drive to be
checked/repaired.
- return to factory settings.
- return to factory settings.
- replace the drive.
- check the motor load
and the enviroment.Wait
for the drive to cool down
before restarting.
- check the motor load.
Wait for the drive to cool
down before restarting.
- check the line voltage.
The overvoltage thresold
is 415 V on the DC bus.
- increase the
deceleration time.
- check the power
connection and the fuses.
- reset.
- check the voltage and
the voltage parameter.
The undervoltage
threshold is 230 V on the
DC bus.
- replace the drive.
P. 79 / 88