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I don't know what kind of material made the evaporator on refrigerator side (I know the freezer side made by aluminum), can you check online to see as they painted black:
I did not understand the whole thing. what kind of material you think I can weld for this evaporator? Can I use torch and lead as I use to solder the copper pipe? I need your detail so I can do it right. Thank you very very much!
Hello again, On this end I get tied up 6 or 8 questions at once, and often have to research details on a few...so there can a wait, especially over night, I can continue with you if you like, Let me know. You do not have a complete answer until you are fully satisfied, I generally stay with a customer as long as necessary, and offer extensive training if needed.If the fitting is copper as it looks to be and the suction line attached is copper..and if you are good with an oxygen -acetylene torch then '15% silver silflos works very well, its hot though and can melt the two tubes connections shown in the picture of the coil....so that, in those cases a product called 'stay brite,0.3% silver that melts at 450F is a good choice' you can use a map gas or propane torch for that (the fuel comes in a wine bottle sized tank, the torch head screws onto the tank)
Do not use lead based solder commonly used with water lines. The system must be ventilated to outside air during the soldering process... but for as brief a time as possible... a few minutes at the most, then the refrigerant drier will need to be replaced.Let me know if you want to continue with me or not, we can go from there or I can opt out,ThanksPhil
I try to leave a positive rating but the website denied.
Can you send for me a link so I can rate again?
I don't want to waste your time, I am waiting to receive the evaporator... as soon as I receive it I check the material and I will get back to you so you can advise me what to do.
Thank you very much for your time.
I got the evaporator today and I believe it is made by aluminum. I have experience for soldering copper pipe and PC boards but I have not done any evaporator yet however if you tell me the right stuffs to use for this kind of material (aluminum) I believe I can do it.
You may check with some refrigerator technicians and give me more info.
Thank you very much and best regards,
You can use a refrigerant line rated epoxy to connect the aluminum to either copper or aluminum tubing. You can buy that in a kit from any appliance repair wholesale supply such as Johnstone Supply or any HVAC and refrigeration supply wholesaler in your area.
The kit has some sand cloth, instructions, a small container of acetone for cleaning the area and two tubes of the epoxy mix (the epoxy and the catalyst).
Welding aluminum is well beyond most peoples skill level.
Be sure to replace the refrigerant drier, and evacuate the system using a vacuum pump before recharging the unit with specified number of ounces of refrigerant on the refrigerator name plate. Use the same exact refrigerant.
You will need a map gas torch and a stick of silfloss 15% silver to change the refrigerant drier if it is not fit with flare nuts on each end... point the outlet of the drier *down toward the outlet when replacing it.
Use plumbers sand cloth only on the copper when fitting a new drier. Adjust the flame on the torch so that it makes the copper shinny under the flame. practice on some scrap first.
If you need a source for the epoxy, tell me which direction you are from the center of the nearest city and I will find a source for you.
Hi Phil,I live in Brentwood, NY 11717, can you send for me some links so I know exactly what it looks like and where to get it please. In case I want to weld the aluminum, where can I get the materials and can I use the torch that I bought from Homedepot?
Hello again, there are several different brands of the epoxy made for this use, a little bit bigger than a package of cigarettes.
Ask one of the more experienced looking countermen to show you the options... you want a 2 part epoxy mix for those socket fittings, not a hot melt.
Johnstone Supply - Farmingdale #214 135 Schmitt Blvd, Farmingdale, NY (NNN) NNN-NNNN · johnstonesupply.com Category: Air Conditioning Contractor 1 review · "Wholesale distributor to the HVAC, refrigeration and property maintenance industries." - johnstonesupply.com
United RefrigerationXXXXX Farmingdale, NY (NNN) NNN-NNNN · uri.com
CLICK HERE FOR ONE OF THE REFRIGERATION/ ALUMINUM/ COPPER RATED EPOXY KITS.. there are several others ask the counter man which one they carry and sell the most of.
Both of these stores carry the special flux coated welding rod made for aluminum, read the package as to what temperature torch is required.. anything that melts under 1,000 deg F can be done with a map gas torch from Home depot... tell the counter man what materials are involved all aluminum or copper and aluminum, he will show you the relevant products. I recommend the epoxies though.
Before you disconnect the old evaporator coil it might be a good idea to tell me why you are replacing it. The only valid reason for replacing the coil is if it has a refrigerant leak or corrosion that leaks... otherwise if it does not cool the problem is a bad solenoid valve, thermostat, or clogged capilary tube that feeds the coil
Let me know about that.