DAYLIFF DWY370, Инструкция по установке и эксплуатации

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6
6. MAINTENANCE & SERVICE
In any of the following circumstances, stop the pump immediately and restart only
after the environmental conditions are improved or the problems solved
!
If the working current of the pump exceeds the rated current of the motor
!
If the pumping amount is abnormal, water is intermittently pumped with increased
sediment concentration.
!
If the insulation resistance of the motor is less than 0.5 M .
!
If the unit has obvious noise with intensified vibration
!
If the grid voltage is inadequate and the protection mechanism of the motor is
frequently triggered.
!
If the water pipeline is damaged.
Before repairing and servicing, make sure that the pump is flushed with clean water.
The normal operation of the pump should be checked at least once a year. If the liquid
pumped is turbid or the sediment concentration is large, shorten the time intervals of
checking the pump.
The following points should be checked:
!
Energy consumption: if there is anomaly, check if the circuit is significantly
increased.
!
Oil condition: if the oil contains water, there may be a leakage of mechanical seal.
!
Cable: make sure that the cable is still sealed without obvious bending or shrinking.
!
Over-current: check if the impeller or pump housing is worn.
!
Bearing: check if the bearing is damaged or its rotation inflexible.