If a gear coupling is being used, it will be possible to change it to a coupling with a simpler structure such as a leaf spring type. This will be additionally effective when there are problems with vibration caused by age-related deterioration of the gear tooth surfaces.
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.