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The pulse width modulated duty cycle signal
2021年12月7日
几年前, 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.Read Article >
Exploring electronically controlled variable displacement compressors
2021年11月23日
Electronically controlled variable displacement compressors (ECVDs) have been in use now for over 15 years. 然而, there are a lot of technicians in the field who have very little knowledge about them and their operation.Read Article >
Meet MACS member, Tom Lech
2021年11月8日
Stationed in San Francisco, 加州, Thomas Lech has maintained a bustling business for almost three decades. Lech Auto Air Conditioning has been busy for 365 days a year from opening at 7 a.m. 到7点收市.m. for the last 27 years, with summertime only increasing the demand for the shop’s services.Read Article >
What do you know about the fixed displacement piston compressor?
2021年的11月2日
What do you know about the fixed displacement piston compressor?Read Article >
把热!
2021年11月1日
每年的这个时候, I often end up with an earworm in my head from a Canadian rock band … Summer’s going fast, the nights are growing colder. Then it’s the line everyone knows from something more mainstream … 冬天即将来临. It’s early September, and the leaves on some trees are already starting to change. 冬天即将来临.Read Article >
The concept of superheat
2021年10月19日
We illustrated the concept of superheat in last week's article by boiling water and superheating steam in a moonshine still. This week we will apply this concept to refrigerant in an air conditioning system. The still has been replaced with an evaporator.Read Article >
Understanding and troubleshooting data lines on heavy-duty trucks
2021年9月23日
Understanding and Troubleshooting data lines on heavy-duty trucks will be presented byLarry Turay of LETCO Enterprises. In Larry’s Saturday morning class, attendees will learn how components and subsystem inputs and outputs can influence HVAC operations.Read Article >
Who are MACS future leaders?
2021年8月27日,
Nominations are now open for the 2022 MACS board of directors’ election. Are you ready to get involved and help shape MACS for the future?Read Article >
Two clues to a condenser’s identity
2021年8月24日
There are two steps to determining what type of condenser is in a vehicle.Read Article >
找到正面朝上
2021年8月3日
Most condensers have different fittings on the inlet and outlet. The locations of the inlet and outlet on most condensers will not allow lines to be connected incorrectly, even if the fittings do happen to be the same size. Lastly, the designs of the mounts on most condensers prevent a unit from being installed upside down. 然而, none of these characteristics apply to the condenser the technician had installed.Read Article >