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46 Rue Petite Fusterie
Bourg-En-Bresse, CENTRE 1000
France *******
The spot that is dark oil remaining from the cutting and forming process during the make. If this oil is left it will not take the solder on you will burn your fitting and.

soldering iron careFlux the pipe and fixtures: making use of your flux past brush each final end regarding the pipe and fixtures. This will make sure a clean and tinned joint.

Time for you to solder: Whatever size your pipeline, that is how solder that is much will have to used to sweat your joints together. Therefore, you will need one inch of solder to sweat your joints together if you are soldering 1" one inch copper pipe.

Using a torch heat your pipeline and fitting evenly. Begin two inches behind the fitting and slowly heat up your pipe and fitting using a straight back and forth sweeping motion. Ensure your flame is close sufficient to cover the whole diameter of the pipeline.

If your flame turns green apply the solder to your hub associated with the fitting, making sure that the solder flows most of the way around the hub. Wait!There is certainly one more "Secret" step to a perfect solder joint, which means the difference between an amateurish glob of the mess on your fixtures or a professional looking solder joint every time.
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1) A simple inspection that is visual be sure that there are not any electrical components out of put on the circuit board. It's also a good time to make sure all of the soldering. (energy is down)
2) Analog Signature Analysis: when you applie a AC that is current-limited sinewave two points of the electric components and circuit. (energy is down)
3) doing an In-Circuit Test: checking various real dimensions with the board like voltage, regularity, etc. (power is on)
4) Performing a practical Test: verifying that the circuit board really does exactly what it is designed for. (power is on)

If a number of the printed circuit boards fail some of the above tests, not totally all is lost. It is possible to learn where in fact the problem is happening and replace the failing components and/or board to permit for this to pass through. This will be often referred to as reworking.