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USE AND MAINTENANCE MANUAL
CHAPTER 6
MAINTENANCE AND TROUBLESHOOTING
DANGER - ELECTRIC SHOCK RISK
Make sure the machine is disconnected from electric power supply, before performing servicing
oparationn.
DANGER - ELECTRIC SHOCK RISK
The electricity supply cable must be replaced by specialised personnel; contact your reseller.
In ordinary working conditions electropumps of the SUB 330S AUTO, SUB 530S AUTO series do not need any main-
tenance.
It may be occasionally necessary to clean the filter or other hydraulic parts.
If the electropump is not going to be used for long periods of time (e.g. an entire season) it should be completely
emptied, rinsed with clean water and stored in a dry place.
PROBLEM
THE ELECTROPUMP DOES NOT
PUMP WATER, THE MOTOR DOES
NOT RUN
THE MOTOR RUNS BUT THE
ELECTROPUMP DOES NOT PUMP
LIQUID
THE ELECTROPUMP STOPS
AFTER RUNNING FOR A SHORT
PERIOD OF TIME BECAUSE
ONE OF THE THERMAL MOTOR
CIRCUIT BREAKER TRIPS
If the problem cannot be eliminated after carrying out the above-described operations contact the closest service
centre.
12
POSSIBLE CAUSE
1) No power.
2) Motor protection tripped.
3) Defective condenser.
4) Shaft blocked.
1) The pump is sucking air.
2) Suction grid blocked.
3) Check valve blocked.
1) The power supply does not
conform with the data on the
nameplate.
2) A solid object is blocking the
impellers.
3) The liquid is too thick.
REMEDY
1) Check the presence of voltage and if the plug is plugged in
properly.
2) Verify the cause and reset the switch. If the thermal circuit breaker
has tripped wait for the system to cool down.
3) Replace the condenser.
4) Verificare la causa e sbloccare l' e lettropompa
1) Check:
a) that the joints are sealed
b) that the level of the liquid has not gone below the minimum
priming level
2) Clean the filter
3) Clean or replace valve.
1) Check the voltage on the power supply cable leads.
2) Take the electro-pump apart and clean it
3) Change the type of electropump.
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