Maintenance And Troubleshooting - Pentair NOCCHI MULTINOX-XC Series Manual

GB
CHaPter 6

MaINTENaNCE aND TrOUBLESHOOTING

DANGER - ELECTRIC SHOCK RISK
Before doing any operation, make sure machine is disconnected from electric power supply.
• Under normal conditions MULTINOX-
XC / MULTINOX / MULTINOX-VE / MCX
electropumps do not need any type of
maintenance
• In order to avoid possible failures,
it is advisable to periodically check
the pressure supplied and current
absorption
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
Before doing any operation, make sure machine is disconnected from electric power supply.
8
• A decrease in pressure is a symptom
of wear
• An increase in current absorption is a
sign of abnormal mechanical friction
in the pump and/or motor
POSSIBLE CAUSE
1) No power.
2) Motor protection tripped.
3) Defective condenser.
4) Shaft blocked.
1) The pump is sucking air.
2) The pump rotates in the wrong direction
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.
• 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
REMEDY
Verify the presence of voltage.
Verify the cause and reset the switch. If the thermal circuit breaker has tripped wait
for the system to cool down.
replace the condenser.
Verify the cause and unblock the electropump.
Make sure that:
•
The joints are airtight
•
The level of liquid has not dropped below the minimum priming level
•
The foot valve is airtight and is not blocked
reset the direction of rotation.
Check the voltage on the power supply cable leads.
Dismantle the electropump and clean it.
Change the type of electropump.