Using Refrigerant Troubleshooting Charts w/ Joey Henderson

HVAC School - For Techs, By Techs

Bryan Orr

Training, Careers, Airconditioning, Self-improvement, Hvac, Business, Education, Refrigeration, Heating, Ac, Apprenticeship

4.8 • 985 Ratings

🗓️ 27 June 2024

⏱️ 56 minutes

🔗️ Recording | iTunes | RSS

🧾️ Download transcript

Summary

This episode focuses on understanding and effectively utilizing various refrigeration system charts and measurements for troubleshooting and diagnostics. Joey Henderson, an HVAC veteran and trainer, shares his wealth of knowledge and experience on this topic.

Joey starts by discussing the challenges he faced early in his career when trying to make sense of the confusing charts with arrows indicating high, low, high head, low head, etc. He emphasizes the importance of knowing the "supposed to be" values before attempting any measurements or referencing charts. Without this baseline understanding, the measurements become meaningless.

He then delves into specific measurements like subcooling, superheat, evaporator temperature/suction saturation, condenser split, and compressor amperage. For each measurement, Joey explains the ideal range, how to interpret deviations, and how different factors like humidity, airflow, and refrigerant type can affect these values. He also highlights the differences in approaches for fixed metering devices versus TXV/EEV systems.

Topics covered in the podcast:

Understanding refrigeration system charts and their limitations
Importance of knowing "supposed to be" values for meaningful diagnostics
Measuring and interpreting subcooling
Measuring and interpreting superheat
Determining evaporator temperature/suction saturation
Calculating and understanding condenser split
Evaluating compressor amperage
Differences in charging fixed metering devices vs. TXV/EEV systems
Impact of humidity, airflow, and refrigerant type on measurements
Using psychrometers and measuring wet bulb temperatures accurately
Calculating and interpreting Delta T (wet bulb/dry bulb split)
Resources like the Efficient Comfort website and Dick Wirz's RefTech app

Check out some of the resources discussed at https://efficientcomfort.net/.

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Transcript

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0:00.0	This episode of the HVAC School Podcast is brought to you by our partners.
0:08.8	Carrier at carrier.com.
0:11.2	Santa Fe and Santa Fe dehumidifiers, they have one of the best product lines in the business
0:15.6	and it just got better.
0:17.3	With their new total peace of mind warranty program that gives your customers a five-year
0:22.3	complete replacement coverage, plus an extra year for parts.
0:26.0	That's the most reliable and comprehensive warranty program on the market and your customers are sure to appreciate it.
0:33.0	Go to HVACR School.com slash Santa Fe to find out more.
0:37.0	Refrigeration Technologies at Refrigerateech.com, some of the best cleaners in the market.
0:41.0	I talk a lot about the venom packs, but you still have the opportunity
0:44.1	to use gallon jugs if you're that kind of a person. If you want to stick with the jugs, I get it. Evap Plus, non-wrence, Evacrofoil cleaner and odor eliminator.
0:53.0	HD your multi-purpose cleaner, degreaser, condenser cleaner.
0:57.0	Even if you're like pulling and cleaning evaps, we pull a lot of ductless blower wheels, use it for that.
1:02.0	And then Bright is a strong cleaner that can remove
1:04.3	built-up oxides from condenser coils.
1:06.5	Don't overuse bright.
1:07.5	It's good stuff, but don't overuse it.
1:08.9	You don't need everything to look shiny all the time.
1:10.8	We use Evat plus and HD all the time. They work great. Like we've mentioned before, they are food safe cleaners. That doesn't mean they're safe to eat as food. I would not drink it. You'll probably get nasty diarrhea. But it is safe to use in food service and refrigeration applications.
1:25.0	Just add a little bit of the pump sprayer or use the foam gun if you're washing
1:29.1	condensers. Find out more by going to refrigerantec.com, that's Refrigeck.com, that's Refrigetech.com.
1:35.3	The ESCO Institute, with over 200 HVACR training solutions, courses, webinars, and
	...

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