Recovery Tips and Best Practices w/ AC Service Tech
HVAC School - For Techs, By Techs
English - March 04, 2021 12:00 - 30 minutes - 41.8 MB - ★★★★★ - 943 ratingsCareers Business Education hvac training airconditioning apprenticeship heating refrigeration Homepage Download Apple Podcasts Google Podcasts Overcast Castro Pocket Casts RSS feed
In this podcast episode, Bryan and Craig Migliaccio (AC Service Tech) discuss some HVACR recovery tips and best practices.
When you select a recovery tank, you need to know which refrigerant is in the tank. So, it's a good idea to make sure you label each recovery cylinder. You don't want to contaminate refrigerant in the recovery tank, use a recovery tank with contaminated refrigerant, or have too much air inside the cylinder. If the tank is empty, you'll have to pull a vacuum on it before you use it for the first time.
Tank fill can be a tricky business. You have the tare weight and water capacity, which you can use to determine the maximum refrigerant fill (factoring in the refrigerant's specific gravity at 130 degrees and the 80% capacity). Weighing in the charge is important so that you stay within an appropriate range as not to build up hydrostatic pressure and risk injury.
Recovery machines will give you the quickest recoveries. (When using one of those, you can extend your machine's life by using a filter drier during recovery.) However, you can also keep the pressure of the tank low during recovery; one of our best tips is to put the cylinder in an ice bucket during recovery. Regardless of what you use for recovery, you ALWAYS want to use a scale to weigh the tank as you recover refrigerant.
Craig and Bryan also discuss:
Hydrostatic pressure Figuring out the refrigerant type in an unmarked tank Contamination Core removal Waterproof scales Leaks and low refrigerant charge conditions Pulling from the liquid and suction lines De minimis ventingCheck out Craig's website at acservicetech.com.
Learn more about Refrigeration Technologies HERE.
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