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RRS_Dave

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Reply with quote  #1 
Does anyone have a clue what bearings would be in a Bell & Gossett cent. pump. I don't know what the shaft size is, but the impeller is 9". I've got two of them that were installed in 2013, and someone in their infinite wisdom decided that they would start using the Polyrex EM that they use in the motor in the pumps too. I know that B&G started using polyrex in the pumps, but that was for the pumps that were manufactured in and after Dec., 2014.
They were using regular ole cheap clay based grease I believe in them prior to this. I know they are bad, and we're trying to get impeller kits with bearings attached rushed in (there are only these two pumps on this condenser, and they can't afford to be down). Only saving grace right now is it's cold enough that they can get some good efficiency of the condenser without the use of water, but that could change.

D
Mech Teacher

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Reply with quote  #2 
Hello RSS_Dave,
Do you have the Pump Tag data on hand??? if so go to this link, the frame size & HP will determine the Bearings in the power frame.. :http://documentlibrary.xylemappliedwater.com/wp-content/blogs.dir/22/files/2014/01/CP-208G-PL-.pdf
Once you do that be sure the alignment is spot on, those are notorious for failure with bad alignment. Also check the pipe strain, installed in 2013 usually points to an installation issue or application issues. Sorry to say a 1510 B&G is a very forgiving pump, but most issues that soon point to installation or application miscalculations.
good luck...
Mech Teacher...
RRS_Dave

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Reply with quote  #3 
Thanks for the info Mech Teacher. I believe the problem is they have silly putty in place of grease now, since they mixed the clay based grease with the polyurea based grease. Both of them failing about same time makes me suspicious. I will recheck alignment when they put the new kits in.
We have that documentation that the lik points too, but they do not identify the bearings as to whether it's a 6210 or whatever, they have a part number (we thought it may point to a 6001,6002) but that's a very small bearing.

Thanks again for the info

Dave
marksl

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Posts: 155
Reply with quote  #4 
Have you tried contacting the OEM directly (assuming they still are in business) I've had very good success with this approach once I tell them I need the information for vibration analysis, however there are a few out there which will tell you the information is "propriety".

Good luck !
RRS_Dave

Sr. Member / Supporter
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Posts: 216
Reply with quote  #5 
I was going to until until the planner told me he was ordering a whole kit. I talked to the lead mechanic and he told me he'd keep he old ones so I could look at them.
That'll work for me.

D
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