How to determine that the impeller direction of a single-stage double-suction pump is not installed incorrectly
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Should the bending direction of the impeller blades be opposite to the rotation direction of the pump? After overhauling two water pumps, it was found that the current was high when the pumps were not under load, and they experienced overload as well as abnormal noises and significant vibrations when under load.
During the major repair, the bearings and seal rings were replaced at the same time; there is no dead point when turning the disk, and it rotates more easily
Looking from the motor side toward the pump, it rotates counterclockwise; the inlet is on the left and the outlet is on the right
The rotation direction of the green color indicates the rotation direction of the impeller
Just swap the motor terminals for phase reversal; the rotation direction will then be reversed. It’s not your problem; it’s an issue with the electrician’s wiring. Just find an electrician to change the phase. Usually, a rotation symbol is marked on the pump body.
The impeller is installed incorrectly; the direction of the volute is fixed, so it must be removed and reinstalled in the opposite direction – changing the wires won’t work
Momo told the truth – when changing the wire, the impeller is usually installed in the correct orientation; if the direction is wrong.
If you install it this way, looking from the direction of the motor, the water inlet is on the right and the water outlet is on the left. Check which side the water inlet is on. If water enters from the left and exits from the right, then it’s reversed