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oil leaking inside burner housing
I have oil inside my burner housing that is dripping onto the blower fan and getting flicked everywhere inside the burner. The transformer foam and CAD cell is saturated with oil. I've had this problem a few times in the past at servicing time and have taken the burner apart and cleaned it up and it was clean for a year or so each time. The last time the technician was here he replaced the transformer and I haven't seen the problem in about a year, but today I noticed that the new transformer has oil on it (you can see the oil at the hinge and saturating the foam under the transformer) and that there is oil inside the burner. The burner is a 10 to 12 year old Beckett AFG-F3. When it does leak it happens quickly - the transformer foam, Cad cell, etc. will go from clean to saturated with oil in a few seconds - it's not a slow leak, from what I've seen over last two or three years. I suspect that there may be a pinhole leak in the nozzle line inside the burner and that every now and then the pressure must get high enough that it leaks out. Could it possibly be leaking from where the connector tube assembly attaches to the nozzle line? Does anyone know what's causing the leak? What's best to clean off the oil with, especially that's safe for the Cad cell and transformer foam?
This leads me to another related question (should I normally put this in another thread?). When the technician changed the transformer it went from a Becket 10kV transformer to a Carlin 14kV transformer which has worked fine, but now when the burner is on we can not listen to AM radio (which we do most of the day when we're home) due to the interference. I don't remember any noticeable interference before. I'm not sure if the interference is coming through the air waves or through the AC line or both. Is there a way to filter out the interference? Do other people have this problem?
Thanks for the help. This site is wonderful, even the book list. Bill