Could you be damaging your centrifugal pump unknowingly? Whether it is running the pump dry, misaligning it or not fixing it firmly, owners are always inadvertently setting their pumps to poor performance and eventual failure. To prevent this problem, here are four things to avoid:
Running the Pump Dry
Running the pump dry means running it without a liquid. If this happens, both the impeller and the housing will melt. While the time it takes for this problem to happen may vary, the losses will be significant. In some cases, for instance tank transfer applications, the pump may inevitably run dry, albeit for a few seconds. As long as this run is less than 60 seconds, there should not be any damage. Enhance supervision to make sure no running dry for extended periods.
One of the most serious engineering problems is vibration out of imbalanced rotating components. The rule of the thumb is to ensure a complete balance of all rotating components. Centrifugal pump vibrations emanate from hydraulic, peripheral and mechanical causes. It is important to check all these to not only enhance performance but also minimize safety hazards.
Improper Piping Design and Installation
Piping design and installation play a crucial role in the performance of any centrifugal pump. Inlet or suction conditions must be considered in regards to proper allowances otherwise problems such as loss of prime, vortices and cavitation may occur.
Many issues can cause bearing failure in pumps, but poor lubrication is the number one cause. Lubrication should not be either too much or too little, otherwise there would be heat retention or seizure respectively.
Preventing centrifugal pumps problems is not an easy task. However, you can take control of matters by following proper installation and maintenance procedures.