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Re: Boiler priming and carry over

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Posted by Ken on February 15, 2005 at 18:26:20:

In Reply to: Re: Boiler priming and carry over posted by Ken on February 15, 2005 at 18:21:12:

: : At christmas time we opened all of our boilers for annual inspection. everything was great. We closed the boilers and started up on monday. We had trouble getting water into the boiler at one plant. After much inspection, it was determined,(by the carryover in the system) that it wasn't a feedwater problem, but a priming problem. This happened to a 600HP Superior Seminol firetube boiler which is fired at full rate most of the time. We also have a 500HP Superior Seminol boiler that is at a different location in the same town. When this Boiler was fired at a high rate, it did the same thing. We removed all of the chemicals, and started with a new source and one at a time. It will go fine for weeks and then upset. We have went through all of the water sofner valves and thought this might have the problem solved. Well, not so. I have checked all that I know. My TDS reading is below 1500. One question is can a small amount of water sofneer brine upset this boiler that bad and not have any effect on my TDS in the boiler. When the upset happens, my boiler shuts down on low water and when the TDS's are checked, they are just fine. I have zero condensate return. I have called the manufacture of the boiler and the DA tank and everyone else that I know and some that I don't know. Thanks Just a note to update. As of the end of November, we removed the antifoam from our water treatment system and we have not had anymore issues. There was a comunication gap between operators and when we removed all chemicals, everything was removed except antifoam. Don't know why this all of a sudden changed as we have been using this product for years, but it seems to have had something to do with the issue. At least I hope so. Ken

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