Refrigerant Deja Vu (Part Deux)
May 30, 2023
By Richard Hawkins, MACS Technical Contributor This is the second of two articles about the transition from R-134a to R-1234yf refrigerant. Part 1: Refrigerant Deja Vu – May 8th The...Read Article >
Refrigerant Deja Vu
May 8, 2023
by Richard Hawkins, MACS Contributor Lots of changes since the 80’s If you have been associated with mobile Air Conditioning since the late 1980s, you have witnessed a lot of...Read Article >
Staying RRR current
October 25, 2022
The refrigerant checked out fine. No contamination with other refrigerants and no air contamination. Their machine pulled 30 ounces out of that system.Read Article >
Essentials in PHEV and BEV Thermal Management
October 25, 2022
You can attend HVAC Hide and Seek for Electrified Vehicles: Essentials in PHEV and BEV Thermal Management with Dave Hobbs at MACS 2023 Training Event and Trade Show. class on Thursday, February 2 from 9:45-11:15am and again from 2:45-4:15pm.Read Article >
The ambient temperature differences
October 11, 2022
That hose is easy to get to, so I whipped it off of there and had the new one on probably in less than 3 minutes. The owner was standing there watching and thought I was finished when I tightened up the second connection. He said he was going to go up and pay and would be back to get the car and hit the road.Read Article >
TEXA joins MACS Trade Show
October 11, 2022
TEXA joins MACS Trade Show! MACS Training Event and Trade Show will take place February 2-4, 2023, at the Gaylord Opryland Resort and Convention Center in Nashville, TN. TEXA joined MACS as a member in 2018 and is supporting MACS Training Event as a Silver Co-Sponsor of the Welcoming Reception at the Wildhorse Saloon in downtown Nashville.Read Article >
Visit ITWSexton at MACS 2023 Training Event
October 4, 2022
ITW Sexton has been a global leader in the design and manufacture of two-piece aerosol cans for over 60 years. With a variety of styles and sizes to choose from, ITW Sexton’s product line makes it easy to select the ideal solution for a wide range of standard and customized containers - from high-pressure, specialty gases to low-pressure consumer goods. Backed by the ITW family of companies, ITW Sexton is the preferred supplier of aerosol cans for customers that demand the highest level of safety and quality.Read Article >
The refrigerant left in a system after recovery
September 27, 2022
First, here is a brief review of the results of the R/R/R machine test covered in last week's article. A J2210 R/R/R machine left 9 ounces of refrigerant in a system which had contained 27 ounces, after doing a "complete" recovery.Read Article >
Don’t overlook a diagnostic clue
September 13, 2022
When thinking about the topic of A/C diagnostic tools, a recovery, recycle, recharge machine (R/R/R machine) is not one of the first tools that comes to mind. It may not come to mind at all in the world of inexperienced technicians.Read Article >
Do you know about the B1479 trouble code?
August 3, 2022
If you work on Toyota, Lexus and Scion A/C systems, chances are that you have encountered a B1479 diagnostic trouble code on a system that will not operate.Read Article >
It isn’t blowing cold enough
June 29, 2022
"It isn't blowing cold enough.” Most any auto repair shop that does A/C work will often hear customers say this phrase. It can be the result of any number of things that can be wrong with an A/C system. Often it is a case of common things such as, a low refrigerant charge, a refrigerant overcharge, contaminated refrigerant, a blend door issue, a cooling fan problem, or maybe a weak compressor.Read Article >
The importance of A/C system oil balancing
June 21, 2022
Sometimes we encounter information where directions instruct us to drain the compressor being removed from a system and measure the amount of oil that drains out. Then the next step is to subtract this number from the number of ounces that are supposed to be in the shipped replacement compressor.Read Article >
