By Steve Schaeber-MACS technical editor There’s a neat little repair shop here in Lansdale, PA that is well known by many residents of the borough, and one which I walk…
by Jacques Gordon To anyone who has been following along, it looks more and more like the auto industry will never have one universal air conditioning refrigerant. That means we…
Do you have questions on how to service and repair your refrigerant recovery and recycling machine? You can have them answered on Friday, January 17, 2014 at the MACS Training…
Hanging out in the hall after lunch at the MACS Training Event in New Orleans, a young tech approached Jack Rosebro, introduced himself as Ron and said, “Somebody told me…
There never has been and never will be just one In the mid 1750s, Ben Franklin experimented with using vacuum to evaporate liquid ether, and he recorded a significant temperature…
Boy! That Air Feels Good!, by Rod Barclay, covers the story of how three pioneers: a Fort Worth department store owner, a Dallas Cadillac dealer and a Dallas manufacturer of…
(illustration: Sanden International)Richard Hawkins is a technical advisor at 1-800-Radiator. He recently told MACS about a question he received from one of the company’s franchise offices.I cringe whenever I hear…
by Jacques Gordon If his customer ever questions the labor cost, Chuck Braswell uses pictures like this to explain why some jobs just take a little longer. At Rocky Mount…
There’s nothing cheaper or more benign than soap bubbles for finding a leak. As a technician with a 1999 Pontiac Bonneville complained, he tried trace dye and two different electronic leak detectors with no luck, despite the fact that the system was gushing between a half-pound and a pound overnight. But when he swabbed the compressor nose with soap solution, presto, it bubbled. His conclusion: back to basics does it.
1) What is HFO-1234yf?
HFO-1234yf is a chemical refrigerant that will be used in new cars in place of R134a.
Usually made of aluminum and mounted at the front of the vehicle, condensers are one of the two heat exchangers in a mobile air conditioning system. They are constructed as a series of tubes with fins surrounding the tubes. The fins attached to the tubes increase the surface area exposed to the air.
