8 Trouble shooting
Possible cause Action
Voltage protection on frequency card trips
because of too low/high voltage or voltage
spikes
Check the voltage. If unstable voltage, connect
a transformer.
Defective motor/frequency converter
Remedy - replace
8.4 Heater does not start
Possible cause Action
No power supplied Check the mains switch, fuses and supply line
Defective controller
Replace the controller
Circuit breaker(s) F1 and/or F2 tripped Reset the circuit breaker(s)
Ther moswitch R1 tr ipped (located in the
heater cabinet. See Electrical system
diagrams, page 6).
Reset the thermoswitch.
8.5 Separator stops
Possible cause Action
Over load due to high throughput
Reduce the flow rate
Over load due to high viscosity
Reduce the flow
Bowl hood interlock out of correct position
Reposition the inter lock
Over load due to clogged disc stack Clean the separator disc stack
Over load due to incorrect assembly Check the bowl assembly
Tripped frequency converter due to too
low or too high supplied voltage (>±5% of
nominal voltage)
Check the voltage.
Check the voltage. If unstable voltage, connect
a transformer.
Also see possible causes and ac
tions in 8.1 Cleaning system/separator does not start or
stops shortly after start on p
age 49.
Defective frequency converter card
Replace card in control cabi
net.
Counter pressure too high
Reduce counter pressure
.
8.6 Noise
Possible cause Action
Cavitation in pump Reduce the flow. See chapter 6 Control Cabinet
Vibration damp
ers in separator are worn
Fit new dampers
Incorrect assembly of separator bowl
Dismantle and
check
Bearings dam
aged
Fit new bear i
ngs
50
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