General Category > Equipment and Software
pump noise
tschmidlin:
I've got a pump running glycol from the chiller and it makes a weird buzzing noise. One pump does it and one doesn't, so clearly something is wrong. I thought that there might be some air in the head, so I loosened the nut to vent it and the pump quieted right down - success! Unfortunately when I tightened the nut again the noise picked right back up.
Can anyone tell me what is going on and how to fix it?
Here is a pic of the head zoomed in for part numbers, the nut is on the left.
morticaixavier:
Totally uninformed and without specific knowledge but if bleeding air from the head made the noise stop but then it started again could there be a pin whole somewhere in the lines from the glycol storage unit that is adding air on that one pump?
tschmidlin:
I forgot to mention - when I loosened the nut and it was quiet, I could see a lot of air bubbles in the stream that was being returned to glycol reservoir. When I tightened the nut and the noise started, the air bubbles in the stream disappeared. :-\
mtnrockhopper:
Obviously the answer is to leave the nut loose. ;)
gmac:
--- Quote from: mtnrockhopper on January 31, 2013, 08:01:04 PM ---Obviously the answer is to leave the nut loose. ;)
--- End quote ---
I know I whine when my nuts are tight.
Sorry.
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