Commercial Air Handler leaking condensate pan

I have a Snyder General LSL 114 DV with a condensate pan leak somewhere. Its leaking thru the pan into the cabinet shell (inbetween) and works its way over to the alternate pipe where it leaks out between the condensate pipe exiting the cabinet. This is all an assumtion on my part. I couldn't find the leak, in a pitch black room using a bright light... I was going to try reseal the pan and all its joints but the goop the OEM uses is unavailable (not for sale) I am wondering what to use that will have Low VOC and dry in a few hours at most..... Any ideas? Replacing the pan would be a major fiasco having to disconnect Vic piping and removing 2 coils of about 300 pounds each............and only God knows what else I'd bump into....

 

Is early retirement an option?

 

Ha.Ya. Anyway, can you get in there good enough to clean out the scale and stuff, so you can goop something on that will stick? I do know that something as basic as silicone caulk can work, if you rub in the first thin layer, to ensure it can stick. This method has been done already in submersed bases of cooling towers to buy time. And when so prepped and applied to even metal mobile home roofs with big gaping rotted out holes, and has held over time with rains, wind, and freezing temps, snow, and baking summer heat.

If you can't do this, you'd almost have to make a diaper - a secondary catch pan (not uncommon, especially for HVAC units in attic spaces)and drain system.

 

are that this is in the airstream in a retirement home. I was thinking of silicone but the existing stuff is a tarlike substance and if I could match it, I think it might do better. Silicone gets messy, this pan I crawled inside it to the end about 8 feet deep, about 5 feet wide. no scale to speak of a light flaking of algecide pads was all.....

 

Can you identify what was used?, or call the mfger as to what it is? Or call up mechanical supply house or large yellow page type HVAC company that do large commercial jobs, including engineering. They should have some idea. One outifit I called up years ago, would have come out and lined what I needed done with a rubber pan liner, but I opted to crawl in there and silicone myself, for almost free, compared to what they bid the job for, (rubber lining it).

 

because it does skin over in about an hour and I'll have about 9 hours to get it back up and running. I did try the manufacturer and his rep to no avail. Sometimes I think they know less than we do, or just not intrested in helping if they don't get paid for the research. I was going to try a spray insulation that goes on copper piping to prevent condensate, but this may not have the stretch ability of silicone (.25")
just throwing things out there...............