![]() ![]() In this case, only one side of the pump is working and will cause a noticeable pulsation. If you have a check valve that’s plugged or worn out, you can lose flow from one head of the pump, cutting flow in half. Use rubber vibration isolation mounts to dampen the impact and make sure all fittings are tightened. If a pump isn’t properly secured to the equipment, it can cause components to rattle or bang around. Using a pulse hose can help to minimize pulsations due to its ability to dissipate energy and built-up pressure, smoothing the flow of liquids. Pulsation can occur in hoses that are too weak, too long, too rigid, or too soft, causing a drumming sound. Pump Drive ProblemĪ slapping sound may indicate a problem with the pump drive or power supply. If a plunger slot is loose, each time the cam goes around it will impact the plunger more, causing noise. Pumptec pumps do not use an oil bath and can run in any orientation and be stored on their sides, so no worries. The resulting low oil levels will cause the pump to wear out and could even cause the connecting rod to blow out the top of the pump. Many pumps use an oil bath that will drain out if the pump is not kept upright. The pump will knock like a car engine, especially with the change of speed/load and the starting and stopping of the motor. Water contamination could cause connecting rods to open up. A lack of preventative maintenance or a dirty environment can cause issues and even lead to a loss of lubricating grease. Particulates in the lubricant could scratch and damage a pump system, resulting in noise. Proper maintenance can help avoid this issue. If a pump is nearing the end of its life, the plunger slot and cam bearing that’s attached to the end of the motor can wear out. Likewise, any hose that’s not routed in a way that keeps it away from the walls and housing could cause issues. If you have a big plastic housing that has a built-in tank, or hoses that run loosely along the floor of the plastic housing and you place a pump on top of it, it will likely result in excessive noise. Check all the connections regularly to verify a proper seal. Similarly to cavitation, it can ruin a pump if not corrected. Air leaks in inlet plumbing can create very loud noises. If a pump’s seals are going bad, cracked, or dried out, they can form leaks. Likewise, water hammering, a single implosion of a large gaseous bubble or air pocket might sound like a loud bang. Cavitation or Water HammeringĪ rattling sound inside a pump may be caused by damaging cavitation, resulting from imploding internal gaseous bubbles due to restricted flow, improper pressure, or other issues. Noises that begin suddenly or increase in volume over time might indicate one of the following problems and be a sign that it’s time to do some critical pump maintenance to achieve pump noise reduction. Some plunger pump noise is acceptable, but there are times when high noise levels indicate that something is wrong. Commercial high pressure pumps used for agricultural, commercial cleaning, pest control, and other industries have a lot of moving parts.
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