Cleanning An Evaporator Coil

Dr Heat

Ok I'm stumped and could really use your help.

This just in
One my techs just called he is on a roof top working on a 25 ton ICP
PGE series.

The customer was cutting concrete Lots of concrete inside the building. They did not turn off the unit and when they got cold they pulled the filter and tapped them out reinstalled and (do you see where this is going) now the coil is plugged with concrete dust. well when they saw what they had done they tried to clean the coil with water IT IS 7 Degrees here.

My Tech thawed the coil and now... how do you remove concrete from an evaporator coil (did i mention we installed this unit two months ago)

Any Ideas would be great I like this customer and do not want to R&R the coil.

bwalley

I would pull the charge, remove the coil and soak it for a bit and then try pressure washing it, but let the client know there is no guarantee you can save the coil, it might be better to replace it.

flashheatingand

Hopefully, most of the dust accumlated on the fins. Couldn't you try to "peal" off the concrete debris. I would tap the concrete to break it off and try to take it off piece by piece. You said that you really do not want r.r. the coil, so that would be the first thing to try. Fortunately, time is on your side. As bwalley said, let the client know this isn't a guarantee, but it's worth a try. If the concrete accumulated on the actual coil, I think the customer is skrewed.

Dr Heat

ya my tech took some pics Ill post them if you can see anything