Oil
Oil
O
il
Fault
c) When the replacement of No. 10 white food machinery oil for an oil-filled motor, the motor
must be fully filled.
3.If the Electric Pump is not used for a long time, it should not be submerged in water. Place
it in clean water for energized operation for minutes, clear away the condensate inside and
outside the Pump, dry it, and then carry out rust-proof treatment, and finally put it at a well-
ventilated dry place.
VI. Troubleshooting
Cause
Remedy
Difficulty in
startup
Low water
yield
No rotation
suddenly
1. The supply voltage is too low.
2. The impeller is blocked.
3. The cable is too thin and the
voltage drop is too high.
4. The stator winding is burnt.
1. Adjust the voltage to ±10% of the rated
value.
2. Correct the part blocked.
3. Select a proper cable.
4. Re-insert the winding or carry out overhaul.
1. The head is too high.
2. The mesh enclosure is blocked.
3. The impeller is seriously worn.
4. The submersion depth of the
Electric Pump is less than standard
and air is absorbed.
5. There is leakage at the outlet.
1. Follow the range of head.
2. Clear away sundries like water plants.
3. Replace the impeller.
4. Adjust the submersion depth of the Electric
Pump, which shall not be less than 5m.
5. Add the Teflon tape to the place of thread for
sealing.
1. The switch is disconnected or
the fuse is burnt.
2. The impeller is blocked.
3. The stator winding is burnt.
4. The motor is overloaded and the
protector acts.
1. Inspect whether the head and the supply
voltage used conforms to the relevant
provisions and make adjustments accordingly.
2. Remove sundries.
3. Re-insert the winding or carry out overhaul.
4. Check whether the impeller is blocked or the
voltage is too low.
