VII: Pump Troubleshooting Troubleshooting a Cavitating Pump When cavitation occurs, it can be heard. Some have described it as a rapid pinging sound or like a bunch of marbles bouncing around inside the pump. Use the following checklist to troubleshoot. D Confirm location of cavitation (where in the pump, suction pipe etc...) Check that all valves are open on the suction and discharge lines Check for suction side blockages Check operating conditions Check slurry temperature Identify areas of high velocity or high friction losses in the pumping system Once the cause of cavitation is identified, implement a solution to eliminate. FLSmidth Pump Product experts will gladly assist. Hysteresis Damage Hysteresis damage is the breakdown of a material from internal friction due to repeated loading conditions. In pumps, hysteresis can occur in rubber liners when impellers with radial expelling vanes are operated at high speeds. When an expelling vane passes over the liner, it creates a high- pressure zone betwe