Instructions on how to solder a gas column
In order to solder the gas column, you will need: - POS-61 solder; - flux; - a soldering iron with a power of at least 100 W; - fine emery cloth; - solvent; - rags.
Start soldering the geyser with preparatory work. Purchase solder exclusively of the POS-61 brand, since it is more difficult to solder copper tubes with other solders. They are less fluid, more refractory, and their structure is worse. Solder wire is perfect, sometimes it comes with rosin filling.
You will also need a flux, just choose one that says "No Clean", "Acid Free", or "Corrosive Passive". This will save you from problems with the repair of gas water heaters. Prepare a 100 W soldering iron, clean its tip from the burnt old flux.
First drain the water in the heat exchanger. Open the hot water faucet in the sink, while unscrewing the union nut from the pipe supplying cold water. Due to the difference in water levels in the gas column and in the kitchen faucet, water from the column will drain down. Blow out the rest of the water with a compressor or vacuum cleaner, as it will complicate the heating at the soldering point of copper tubes even with a powerful soldering iron.
Clean the place where the gas column is soldered with a fine emery cloth. Usually, at the location of the fistula, copper oxidizes, a characteristic spot of a poisonous green hue appears. After stripping with an emery cloth, carefully wipe this surface with a cloth with a solvent that removes greasy stains and dust. Wrap the pipe with rags on both sides so that it cools less and you can hold it with your hand without burning yourself.
Tin the place to be soldered well. Lubricate it with flux. Dip a sufficiently heated soldering iron into the solder, and transfer it to the place of soldering. The solder will drain off the soldering iron, forming a strong connection with the copper pipe. If the solder does not spread, but hardens, take the following measures. Using a torch, heat up the place where the copper pipes are soldered. Wrap this place with a thick rag, heat the soldering iron to 180 degrees and try to heat the solder again. Repeat the procedure several times. Sooner or later, the pipe will warm up, and the solder will surely spread.
Treat the wire or patch in the same way. Attach a patch, heat the pipe with a soldering iron, add solder if necessary. Once the solder fills the seam evenly, remove the soldering iron. Gas column repair completed. After everything has cooled down, you can supply water.
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Video of soldering a gas column radiator  |
Published on 09.08.2012
