Solving Pump Problems

Eventually, every pump will have a problem and will require repairing and that will include some component repairs or replacement parts. We understand and accept that, but in a fast paced world where downtime costs money, sometimes we just replace the worn out components and get the pump operating again as fast as we can without giving it another thought.


For example, it has been said that roughly three-quarters of premature centrifugal pump failures can be attributed to seals and bearings. So, the first thing we have to do is determine if the life attained from the parts is what can be expected. If so we can replace the parts and move on. If not, perhaps it would be better to take a step back, slow down and think about the cause of the failure. For example, there may be shaft misalignment or excess heat being generated. Sometimes you may need some assistance in getting to the root cause of the failure. See


After some careful investigation, we may find that there may be some operational issues that need addressing. For example, the pump may be starved of fluid at times. This could be at start up when the pump is not primed correctly or the intake or suction filter is allowed to become blocked occasionally or the product storage tank is allowed to run out of product before refilling. This example would shorten the life of the mechanical seal or gland packings considerably.


Another example could be worn out wet end components such as the volute or impellor. There could be a number of issues at play here such as cavitation or an abrasive product being pumped. If it is cavitation, then we need to find the cause and if it is abrasion then we may need to see if there is a solution such as some form of settlement tank or filtration. If we are stuck with the situation, then possibly we can extend the life of the components through applying a ceramic epoxy coating which is considerably harder and more wear resistant than the pump components parent material. See


So, if we can avoid the temptation of just reacting and repairing just to get things going again and actually take a moment to think through the problem, there could be occasions when savings can be made by identifying the root cause of the problem, implementing a solution and then getting the maximum life from the pump that is possible.