View Full Version : Shaft seal leak rate
03-05-2005, 11:26 PM
We all are well aware that a shaft seal on a centrifugal leaks. How many drops are allowed before condemning? Is a trend log the best way? I have heard that on Yorks "x" amount of drops per minute mean it is time to change it, period. what do you all say?
03-05-2005, 11:58 PM
Is the catch bottle filling up,if so more than once a month is too much.Are you working on a YORK if so the seals on the centrifugals are not bad about leaking.If i remember 750ml is the acceptable leak rate for a month,use to work for YORK we had problems with the screw seals leaking back then.To clearify i'm talking about the seals on the low pressure machines not the YK'S.
03-06-2005, 12:07 AM
Yes, I was talking about LP centrifs. Appreciate the input.
03-06-2005, 08:27 AM
Yes, filling a bottle monthly is on the path to condemnation. Sometimes though, the seal pressure is just a little too high. You can adjust this if the compressor has the adjustable spring on the side of the seal housing. I've seen this many times before, after the adjustment, it was fine. I've also seen it where the seal is bad, you can't adjust it, and you have to replace it.
03-06-2005, 02:52 PM
just curious........how many people out there actually thought the catch bottle on the yorks was a joke the first time they saw it?
03-06-2005, 03:04 PM
If york changing the seal on the YT, make sure you get the new style bellows seal. The problem with the old seals was the dynamic o-ring would stick to the shaft and would stop the spring/s from aplying tension to the 2 seals surfaces. The new style seal eliminates this problem. They still might be telling contractors this isnt available Im not sure, but Ive bought and installed them. Problem solved.
03-11-2005, 06:21 PM
I got it I got it "20 drops per minute"
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