An AC unit can be a fine appliance. It allows you To possess a coldish, dry refuge from the fevered, humid summer. Nevertheless, as with any appliance, problems eventually can eventualize. One of the problems that can betide is that the refrigeration gets low in the copper tubing that runs from the AC unit gone to the evaporator coil in your indoor unit. This causes chill to accumulate on the indoor evaporator coil, which prevents air from getting nailed down it into the duct chore. When the leak is fix, you can allot the frozen AC unit and go back to your chilled sanctuary.
Instructions
Instructions
1. Provided there is a leak, you Testament detect bulky bubbles figure outside of the idea.5. Let the nitrogen away of the lines and braze the leak shut with your 85/15 brazing rod and acetylene torch.
3. Eyeful for the leak on the refrigeration tubing. Strip all insulation off the tubing so that you admit naked copper exposed. Flash for any corroded or worn areas that could maybe name themselves as a leak. Assign soap bubbles on any suspicious areas.
4. Settle soap bubbles on Everyone brazed Seam between the evaporator coil and the AC unit. Reclaim all refrigerant elsewhere of the method by using a refrigeration recovery personal computer. You must be EPA-certified to hilt refrigerant to close this.2. Hook up your refrigeration gauges and pressurize the lines to 200 PSI with dry nitrogen.
Whether it's a baby pinhole, you should be able to braze over the leak to seal it, on the contrary provided its a large or corroded area, replace the section of copper tubing. This can be done by cutting the bad section of tubing out and replacing it with two couplings and a small section of tubing. Braze these joints.
6. Hook up your refrigeration gauges and pressurize the copper tubing again to 200 psi with dry nitrogen. Let it sit for a few hours and check to see if the pressure held. If the pressure held, drain the pressure out and hook up the vacuum pump.
7. Pump the copper tubing down with the vacuum pump. This removes all contaminants and moisture from the system. Once vacuumed down to a vacuum, fill the copper tubing with the correct amount of refrigerant. The correct amount is identified by the length of tubing you have. The chart should be on the service panel to the AC unit and will tell you how much refrigerant to use per foot of copper tubing.
8. Replace all insulation on the copper tubing to prevent sweating of the copper lines.
9. Turn the AC unit on and verify that the refrigerant is operating within normal temperature and pressure. Add or remove refrigerant as necessary to adjust to correct parameters.
