Evaporator coil leak repair

[gravity]

Found a circuit flat on charge yesterday and repaired it today.


found leak at 50psi nitrogen and bubbles to verify

better picture of whole coil

repaired leak with #0 tip

also found this fitting to leak and replaced

the coil all back together

not a bad level for r-410a thats been open to atmosphere for who knows how long

i also replaced the drier with a correct size one.

[jdblack]

Nice repair. Is that 1/2" or 3/8" going to the vacuum pump?

[gravity]

2 of the appion 1/2" hoses

[kdean1]

Nice work. It feels good after a repair like that.

[jnsrose]

Boy you really took us through step by step. I felt like I was assisting you. Nice job. What do you set your regs on the oxy/acc rig fot that repair?

[jdblack]

Have you noticed the micron reading inaccurately that close to the pump?

Sent from my ERIS using Tapatalk 2

[Elfshadow]

not a bad level for r-410a thats been open to atmosphere for who knows how long

i also replaced the drier with a correct size one.

We actually had a rep from Emerson down to the shop not to long ago tell us that it was impossible to get all the moisture out of POE oil even with a deep vacuum. Of course he also told us that the compressors that where being install on the line should only be open to atmospere for five minutes at most. Of course this is all in side of a factory setting.

[Orangeheat1]

Nice job..... looks good.

[gravity]

Have you noticed the micron reading inaccurately that close to the pump?

Sent from my ERIS using Tapatalk 2

it will show lower then what the system is actually at. after it has been running for a while i will close the core tool that has the micron gauge on it. then im readings furthest from the pump.

[gravity]

Boy you really took us through step by step. I felt like I was assisting you. Nice job. What do you set your regs on the oxy/acc rig fot that repair?

it depends on the tip.

i used like 5 act and 10oxy with the 0 tip

and then when i use my #15 rosebud i will use about 8-10act and 10-12oxy

the tip is important for the repair. if i used my rosebud on the coil i would have burnt everything

[Elfshadow]

it depends on the tip.

i used like 5 act and 10oxy with the 0 tip

and then when i use my #15 rosebud i will use about 8-10act and 10-12oxy

the tip is important for the repair. if i used my rosebud on the coil i would have burnt everything

Seen this in action. Most of the pipers where I work love their rosebuds. Find a leak in a unit during test, they will burn the hell out of everything around it while fixing it. Really POs everyone down the line. I normally get stuck fixing pipe insulation. I have been trying to fix the leaks myself but I don't have the skills of people doing that type of work 24/7 for years.

[david912]

Good job man, ive got a few trane package units around here that ive had do do the same thing, one in the same spot

[nsula_country]

We actually had a rep from Emerson down to the shop not to long ago tell us that it was impossible to get all the moisture out of POE oil even with a deep vacuum. Of course he also told us that the compressors that where being install on the line should only be open to atmospere for five minutes at most. Of course this is all in side of a factory setting.

The EMERSON rep was 100% right. It is impossible to remove moisture from POE oil. I know, we have tried in the lab. The oil must be changed. The minimal open time is 100% correct too. POE will wick moisture from the air at an alarming rate. It is extremely hydroscopic (sp). This is why the compressors are shipped with plugs and about 5 psi of dry air.

Knew it was a Trane, red compressor!

CT