Turbo Air " walkin freezer " evap

[icemeister]

it ran 4 years , so im not sure why it suddenly decided to bubble up

My guess is was like from the git-go. You wouldn't likely ever notice it unless you were looking for a leak in that area of the coil.

[icemeister]

Another possibility for those bumps or blisters in the copper is ice.

At that end of the coil it's common to have a permanent buildup of frost and ice. When there's a continual cycle of localized thawing and refreezing such as near the heater element, the refreezing exerts enormous pressure on the tubing when it expands. I've seen this a lot with frozen food case evap coils with hot gas defrost which don't completely defrost then refreeze. Many times the copper splits open from this.

[Snapperhead]

Was the leak at the end sheet ?

1st pic look close at the bubble and see the split on it

Id rather fix it than replace ... but i dont see how im gonna fix it without some serious aluminum meltage going on

Ive brazed plenty of Tube Bends , but that shits really close to the alum

The 2nd pic has a bubble half way down

[Snapperhead]

Another possibility for those bumps or blisters in the copper is ice.

At that end of the coil it's common to have a permanent buildup of frost and ice. When there's a continual cycle of localized thawing and refreezing such as near the heater element, the refreezing exerts enormous pressure on the tubing when it expands. I've seen this a lot with frozen food case evap coils with hot gas defrost which don't completely defrost then refreeze. Many times the copper splits open from this.

Ive seen tube bends crushed , but never seen blisters

[pecmsg]

1st pic look close at the bubble and see the split on it

Id rather fix it than replace ... but i dont see how im gonna fix it without some serious aluminum meltage going on

Ive brazed plenty of Tube Bends , but that shits really close to the alum

The 2nd pic has a bubble half way down

Stay Brite #8

[VTP99]

Ive seen tube bends crushed , but never seen blisters

You haven't see a copper hydronic coil ?
I see that split. The Captain's Hook is perfect for that repair.
Or post #25