Maintenance And Troubleshooting - Pentair NOCCHI SCM 4 PLUS 40 Manual De Instrucciones

GB
CHAPTER 8

MAINTENANCE AND TROUBLESHOOTING

DANGER - ELECTRIC SHOCK RISK
Before doing any operation, make sure machine is disconnectedfromelectricpowersupply.
Periodical maintenance should be performed according to the content of sand in water. In ordinary conditions, SCM 4 Plus®, SCM 4
HF and SA 6 pumps do not require servicing.
• To prevent possible failure, it is
advisable to periodically control the
flow rate and current absorption
• A fall below 50% in the flow rate,
as compared to the rated value,
indicates that the pump is worn
• Similarly, an increase of the current
absorption above 5% indicates the
presence of abnormal mechanical
failures in the pump and/or motors
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• In many cases, it is necessary to
replace the worn parts, like impellers,
O-rings and bearings
• If the content of sand in pumped
water is high, it is advisable to inspect
the pump for the first time after about
one thousand operating hours
• If the pump is left idle in the well for
long intervals of time, it is advisable
to start it and allow it to run for a
short time every 2-3 months
• Always make sure that the unit is
completely submersed