8 Reasons Your Centrifugal Pump Has Low Flow
In Seinfeld’s infamous episode “The Shower Head”, Jerry’s apartment building has new shower heads installed that leaves Jerry, Kramer, and Newman’s hair looking a little flat. The situation becomes so frustrating, they eventually resort to buying black market shower heads.
Pump Too Far From The Water Source
When a newly-repaired pump performs poorly, good troubleshooting procedures can help eliminate a number of possibilities—including problems with the fluid being pumped (the pumpage) or with the pipes, fittings or vessels that are connected to the pump (the system). A savvy technician with a basic understanding of pump curves and performance parameters can quickly narrow the possibilities—especially those associated with the pump.
5 troubleshooting strategies for oversized pumps
Various studies have shown that many process pumps are oversized. Optimizing oversized pumping systems can save large amounts of energy, as well as make an impact on pump reliability by reducing pump vibration and extending bearing, seal and impeller life. Oversized pumps will operate to the left of the best efficiency point (BEP) on the pump curve, creating significant internal recirculation, low-flow cavitation, and high shaft loads.
Understanding and avoiding pump cavitation
Pump cavitation is a destructive issue that can befall even the highest-quality pumping equipment. The symptoms range from excess noise and energy usage to serious damage to the pump itself. Thankfully, with the right planning and troubleshooting protocols in place, pump cavitation can be easily avoided.
When troubleshooting commercial pumps it is always important to note the type of symptoms, the point at which the symptoms began and the time period over which the symptoms developed. In particular, consider whether something changed in the system prior to the noted symptoms and performance issues.
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To check the expansion valve you will need a backflush blank and Phillips screw driver. The first thing you want to do is put a portafilter with a backflush blank into the group head and backflush the machine for 30 seconds. During that time watch the black relief valve in the drip tray to see if it leaks water. It will leak water once you release the backflush so it is important to run a long backflush to check for leaks. If it does leak while in the process of backflushing you will want to:
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COMPLETELY CONTROLLABLE, TOTALLY VERSATILE.
Included LOOP HUB controller provides variable speed flow control. Integrated active feedback continuously provides performance status, alerting you to unexpected issues like a blocked impeller. Integrated IC electronic detection protects pump if no water is present. Integrated slow start up slowly ramps pump from 0% to the preset speed over 10 seconds.