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Mobile A/C Training

The most important Tool

May 10, 2022

There is one essential tool we do not discuss enough that is the most important tool of all. TRAINING! No tool in your toolbox is going to work until you know the why, what, and when of how to use it.
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MACS Compressor Class

March 17, 2022

Have you ever had questions about why certain types of mobile A/C compressors perform the way they do? Did you wonder who you could ask? Well MACS trainer, Richard Hawkins will be teaching his class Behavioral Characteristics of Various Compressor Types live at the MACS training facility on Wednesday, May 11 from 5:30-9pm.
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Sometimes it is user error

February 8, 2022

I encountered a situation in the early days of recovery/recycling machines when they had just been introduced.  I had set up a machine about four months earlier when the customer purchased it.  I went to great lengths to cover proper operation of the unit and the shop owner even attended a certification clinic I conducted. 
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Air contamination in an A/C system can ruin your day

February 2, 2022

I had a memorable encounter with air contamination in the mid 1990s.  I was conducting a lot of retrofit clinics at the time and had recently acquired a demo refrigerant identifier which I took to those clinics. At one clinic, there was a technician who was extremely interested in the refrigerant identifier.  
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MACS changes leadership

January 31, 2022

MACS is changing leadership. Elvis L. Hoffpauir, is stepping down at the end of January 2022 from his duties as MACS president and chief operating officer to enjoy retirement. Following a 42-year distinguished career at the Mobile Air Climate Systems Association (MACS), Elvis will transition to past president and association advisor.
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Air contamination in mobile A/C systems

January 18, 2022

We covered a base line test conducted with 0% air contamination and provided pressure and temperature information.  This week we will provide pressure and temperature information experienced with 7.7% air contamination and 18.9% air contamination. 
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The effects of air contamination in an A/C system

January 11, 2022

If you perform an Internet search for effects of air contaminated refrigerant on automotive A/C system pressures, you’ll find many results.  This information leaves no doubt that air contamination of refrigerant in an automotive A/C system can affect system pressures and temperatures
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Variable output scroll compressors

January 5, 2022

This compressor has been around for quite some time and the vehicles it is used on are getting some age on them.  However, they still show up in shops with regularity and there still seem to be a lot of technicians that are not aware of the problem, diagnostic procedure and cure. 
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2022 is a great year for MACS training

January 4, 2022

Attend the best mobile air conditioning training classes available!
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The pulse width modulated duty cycle signal

December 7, 2021

Several years ago, when vehicles using these compressors were just starting to show up at shops for service with some regularity, we were searching to find some detailed information about their behavior to use in clinics.  There was not a lot of it available, so we borrowed several vehicles and did some videos.  The following are some clinic slides produced from one of those videos.
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