Centrifugal Pump - Unusual Noise
Centrifugal Pump - Unusual Noise
(OP)
Hi All
We have a Centrifugal pump for circulating water to wash our products in the conveyor. The pump is producing unusual and heavy noise. There is no leak anywhere from the pump. What could be the reasons for this? details of pump as below
Make: Merser
Model: E 50.1.402
RPM: 2800
We have a Centrifugal pump for circulating water to wash our products in the conveyor. The pump is producing unusual and heavy noise. There is no leak anywhere from the pump. What could be the reasons for this? details of pump as below
Make: Merser
Model: E 50.1.402
RPM: 2800





RE: Centrifugal Pump - Unusual Noise
Dejan IVANOVIC
Process Engineer, MSChE
RE: Centrifugal Pump - Unusual Noise
RE: Centrifugal Pump - Unusual Noise
It is a capital mistake to theorise before one has data. Insensibly one begins to twist facts to suit theories, instead of theories to suit facts. (Sherlock Holmes - A Scandal in Bohemia.)
RE: Centrifugal Pump - Unusual Noise
RE: Centrifugal Pump - Unusual Noise
1. Has any foreign material got into the pump.
2. Is the pump inlet chocked in anyway- possible cavitation as already pointed out.
3. Is the impeller loose, or other mechanical problem developing.
4. A better description of the noise would help.
Try throttling the delivery of the pump, ie. increase the discharge head by closing down a valve on the pump discharge - if cavitating the noise might reduce or even dissappear.
It is a capital mistake to theorise before one has data. Insensibly one begins to twist facts to suit theories, instead of theories to suit facts. (Sherlock Holmes - A Scandal in Bohemia.)
RE: Centrifugal Pump - Unusual Noise
Not enough flow coming into the pump (low level in the tank feeding it)
Air getting into the supply line (low level and vortexing of inlet pipe
Blocked inlet and cavitation
Bearings worn and not being lubricated properly
Water temperature too high
Coupling between ump and motor misaligned
Motor bearings failing
Debris / dirt / in the fluid.
All those issues artisi raised
You need to examine the pump properly and also note how it is in operation ( flow, amps, pressure and temperature at inlet and outlet, level in feed tank ( if relevant). Comparison with pump data sheet will help identify where it is being operated out of spec.
A fluctuating outlet pressure sounds like the pump is being starved of water or getting air in the system, but there could be lots of other problems.
Remember - More details = better answers
Also: If you get a response it's polite to respond to it.