I have once again found myself working in this trade. It all started in the early 90's when I worked on low temp, high pressure units used in the liquid co2 industry. I was a cryogenic tech at the time working on LIN, LAR, LH2, LOX & last but not least LCO2. CO2 is certainly a different animal than the atmospheric gases. Our systems used Copeland semi-hermetic condensing units, Sporlan & some Alco TXV's. Some tanks used Frick belt driven units too. CO2 tanks have the evaporator inside of the tank and as a tech, you can never lay your hands on it. Two stubs penetrating the tank, that's it.
I went to night school for refrigeration back then too. I think I was the only cryogenic tech in our company who took the refrigeration end of the business seriously. I really enjoyed the theory end of the refrigeration circuit.
I got out of field service in the cryogenic business in 2002 but I have re-discovered my passion in recent months. In the past few months I have worked on restaurant kitchen freezers, large commercial office building rooftops & smaller residential units. It's a challenge but never a dull moment.
I had a customer tonight that called me and another company to service his A/C. Then gave me a look of disbelief when I pulled up right behind the other guy and was pissed. He called me three times to ask if I was on my way yet, then I called him just before I headed his way.
Man some people never learn!
It all started for me when I was repairing household refigerators. I went to a Frigidaire class on refrigeration. It was interesting to see the refrigerant change states in the glass tubes of the trainer. Everyone knows you can't see through copper lines. Its challenging and fun to diagnois a system. I like to diagnois refigeration with the operating temperatures. That is from the small systems that holds less than a pound of refrigerant. They have more critical charges being so small. I have worked in the conditioned air field now about 15 yrs mostly residential. I want to learn more about them and commericial systems as well.
What made me decide on wanting to get into HVAC/R trade , well it always had my attention and wanting to learn but life had other plans for me till now. I attended NorthWestern Tech for Climate Control, I like working on things to see and learn how they work, and find this field can offer a challenging but rewarding career. One thing had me wanting to learn more was learning and understanding how a AC system work ,and still blows me away when you pull a system into a vacuum the remaining refrigerant boils off, I find myself in Walmarts ,or any other store that has coolers or machines that are HVAC/R related and looking and trying to trace what lines I can see ,or looking at the coolers and seeing the evaporator fans just a humming inside, and its these things that make want to go as far as I can in this trade