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An RRR Machine Test

September 20, 2022

The purpose of the test was to compare the recovery capability of two different R-134a R/R/R machines. One was an older machine which met the old SAE standard J2210. The other was a newer machine which met the SAE standard J2788 which was adopted in 2007and is still the latest standard for R-134a machines.
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CPI Fluid Engineering is a new MACS exhibitor

September 14, 2022

CPI, founded in 1971, is a global expert in engineering fluids for challenging applications in heat transfer and compression.  “Our mission is to advance the industries we serve by providing world-class engineered performance fluids, unmatched customer support and innovative collaboration.”
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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. 
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Airworks will exhibit at MACS 2023 Trade Show

September 6, 2022

MACS is happy to welcome Airworks as a return exhibitor to MACS Training Event and Trade Show . The big event will take place February 2-4, 2023, at the Gaylord Opryland Resort and Convention Center in Nashville, TN. The Trade Show will be on Friday, February 3 from 10:30am-4pm
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Unlocking the compressor lock up

August 23, 2022

I noticed the temperature inside of the van had increased a bit. Placing my hand near a vent, I also noticed that the airflow had decreased and increasing the blower speed did not increase the airflow much.
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Why did the compressor lock up, part 2

August 16, 2022

The relay was sticking in the on position and the compressor would not cycle off when the clutch cycling switch turned the power off to it.
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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. 
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MACS 2023 Training Event and Trade Show

July 21, 2022

Mark your calendar for MACS 2023 Training Event to take place February 2-4, 2023 in Nashville, TN.
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Improving A/C cool down time

July 19, 2022

If there is an issue with an A/C system, then obviously that needs to be fixed and that will aid in cool down time.  However, if a system is working properly and a customer is complaining, then the focus needs to shift toward educating the customer on steps they can take to improve cool down time.
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Diagnosing Faults on Modern Motor Vehicles

July 8, 2022

Motor vehicles have become increasingly more complex over the last two decades to meet the ever-tightening emissions regulations and increased fuel economy requirements, as well as passenger comfort and safety. This added complexity means technicians are flooded with additional data when diagnosing faults on vehicles. Below is a table outlining the difference between a modern vehicle and a vehicle from 20 years ago. This is only a high-level example to illustrate the differences
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