HVAC Brazing in a TXV on a refrigeration evaporator
Loading...
Link to this comment:
Uploader Comments (DrZarkloff)
Top Comments
-
Horrible braze....looks like someone wrapped a piece of chewed bubble gum around the pipe....braze should flow INTO the joint, not just get gooped up around it....need more heat and you should be flowing N2......
1 year ago 6
-
@emsbas1 Soft solder should never be used on refrigeration circuits.
1 year ago 5
All Comments (110)
-
Looks like that joint needs more heat to me. Looks balled up on top of the joint instead of sucked into it.
-
lol at DR. D OR WHATEVER HE WANTS TO CALL HIMSELF we even had the wrong letter haha
-
That braze sucks ass on so many levels. I bet that joint ain't even at 25%.
-
horrible braze job,, hit the torch at the bottom of the swage, ever heard of capillary action? lol
-
no heat shield ?
-
Seems like he cooked that second joint a bit too much, plus it wasn't too neat.
-
I have videos of ice making machine, they can show you how the ice is made inside the evaporator
- 1:18Re: HVAC Brazing 2by mikie25014,554 views
Featured Video
- 4:51HVAC Triple Evacuationby DrZarkloff32,442 views
- 5:00HVAC Brazing 1by DrZarkloff105,206 views
- 13:46HVAC Thermal Expansion Valvesby DrZarkloff47,697 views
- 3:47HVAC ohming compressor to ground and ohming the...by DrZarkloff15,029 views
- 6:17HVAC Bad expansion valve.by dizziedallas20,769 views
- 4:36How-To: Braze Copper Tubeby coppervideo20,407 views
- 13:47PT Chart 101by johnnyhvac15,582 views
- 1:00A 101 on the metering valve that controls refri...by partsauthority21,658 views
- 3:03Tube Flaring Techniquesby RitchieYELLOWJACKET73,805 views
- 2:54Fluxing & Soldering Techniquesby coppervideo291,017 views
- 6:09Refrigerator Not Cooling Repairby applianceassistant288,186 views
- 7:14What's an expansion valve and how to replace itby briansmobile14,555 views
- 8:56Realita Cinta dan Rock n Roll 9/12by sijeruk75,303,071 views
- 9:40Refrigerant Regulatorsby alpinehomeair17,637 views
- 5:09Brazing Hints and Tipsby 897473253,654 views
- 2:04HVAC Calculating Super Heatby mikie250182,846 views
- 5:41Refrigeration evacuation proceduresby nagsarecool30,404 views
- 9:06Basic Refrigeration parts Part 1by RCCAirRefrigeration52,979 views
- 8:58Evacuation Part 2by RefResearch17,741 views
What really pisses me off is when I see areas on the side of an evaporator, where there are empty holes in the side where copper pipe should go through.
somerandomdude82 3 months ago
@somerandomdude82 The holes on the side of the evaporator are just runs in the evaporator that are not being used in the system application. The manufacture will make the same coil for many different unit sizes. Then in the same factory, the loops on the ends are installed for the specific unit.
DrZarkloff 3 months ago
I was wondering what solder you are using, since I don't do a lot of brass to copper soldering-brazing I asked at the local supply house and they recommended a rod with a white powdery flux on it. What an abortion that joint turned out. I need to go out and buy another valve and start over. Sporlan R-410 valve 2 ton. Can you use Silphos?
LarryInTheVI 6 months ago
@LarryInTheVI I use 15% silphos all the time as long as I'm brazing copper to copper. If there's steel involved then I use a 45% silver solder.
DrZarkloff 6 months ago
In your TXV video you recommend taking the valve apart when soldering it in so you don't overheat any internal parts. With that much wet rag you need a lot of heat to compensate for the rag, would it be better to take the valve apart and use less rag so you are on and off that joint quick.
LarryInTheVI 6 months ago
@LarryInTheVI I think that it is better to take the valve apart before soldering.
DrZarkloff 6 months ago