If the torque curve from the time the pump was manufactured still exists, we can provide it to you again. If it does not exist, we can create a new one and provide it (creation of a new curve will require a fee).
Rotating, but water does not come out. Discharge quantity is not enogh to specified capacity.
Over load (Overcurrent) occurs.
Excessive water leakage from stuffing box
Electric motor does not work well with noise.
Water comes out at first, but it doesn't come out soon.