Maintenance And Troubleshooting; Cleaning The Filter - Pentair PRATIKA Serie Manual Del Usuario

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CHAPTER 6

MAINTENANCE AND TROUBLESHOOTING

DANGER - ELECTRIC SHOCK RISK
Before doing any operation, make sure machine is disconnected from electric power supply.
DANGER - ELECTRIC SHOCK RISK
Power cord must be replaced by manufacturer or by Customer service, using special tools.
Under normal conditions electropumps in the PRATIKA® series do not need any maintenance. Occasionally it may be 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 emptied completely, rinsed with clean water and put in a dry place.

CLEANING THE FILTER

If the water being drawn is not perfectly clean, it may be necessary to clean the pump using a steel brush to scrap accumulated dirt
off the outer surface, afterwards, without dismantling the pump, rinse the filter with clean water.
If this is not sufficient then clean the hydraulic parts.
CLEANING THE HYDRAULIC PARTS
Unscrew nuts holding the filter
In sequence remove the filter and
suction flange
Holding the impeller still, unscrew
the locking nuts
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 PROTECTION DEVICES TRIPS
If the problem has not been eliminated after carrying out the above operations contact the closest service centre.
8
Remove the impellers and diffusors
one at a time
By loosening the tie rods, it is
possible to disassemble the
delivery flange to gain access to the
mechanical seal
POSSIBLE CAUSE
1) No power.
2) Motor protection tripped.
3) Defective condenser.
4) Shaft blocked.
1) It is taking on air.
2) Wrong rotation direction.
3) Suction grate blocked.
4) Non return valve blocked.
1) Power supply does not conform to data on plate.
2) A solid object is blocking the impellers.
3) The liquid is too thick.
Carefully wash the parts
To assemble follow steps in reverse
order
REMEDY
Check if there is power and if the plug is plugged in properly.
Verify the cause and reset the switch. If the thermal has tripped wait
until the system has cooled.
Replace the condenser.
Verify the cause and unblock the electropump.
Make sure that the joints are airtight.
Check that the level of liquid has not dropped below the
minimum priming level.
Reset the rotation direction.
Clean suction grate.
Clean or replace valve.
Check the voltage on the power supply conductor cables.
Dismantle the electropump and clean it.
Change electropump type.

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