Hi, I have been working full time in HVAC for about a year and refrigeration interests me much more. Does anyone have any suggestions in what to study before looking searching for a job?
Thank you very much
Hi, I have been working full time in HVAC for about a year and refrigeration interests me much more. Does anyone have any suggestions in what to study before looking searching for a job?
Thank you very much
Yes start with Ice Machines ,then reach ins, get involved with RSES very good place to start.
Regards
Yes, sequence of operation plays as equal a roll in the troubleshooting process. At least it sure does speed things up. If one starts at the end and then ends up at the beginning only to fine that the power is off. That sure is a waste of time.
I never accurately tracked, but I'd say electrical issues (including motors) are 50% or greater of the issues I see. In fact, hooking up my refrigeration gauges is the last thing I do. I'll use my Fluke 52 or my Fluke 116 much sooner.
You've already found your best resource. Get your post count up and go pro, then you can see all the good stuff.
Thank you very much techwizard and ryan
I have looked into rses training materials in the past. Are you referring to the R/AC series of text books?
I would very much like to go pro and read the educational forums
Read Heatcraft IOM, then get a job
A lot of stuff out there to read, IOMs, forums like this, text books, and such. I would hit them all. Experience is the best teacher and no substitute for time. Be patient and persistent. The first lesson is SLOW down. This side is a bit more critical then comfort cooling and gas and go tech crash and burn pretty quick. Learn the difference between symptom and problem and pursue the problem. Fix it and the symptom will likewise be corrected. Throwing charge at low pressure will get you in trouble. Good luck.
You haven't mentioned if you were commercial or residential HVAC. I find electrical knowledge & electrical troubleshooting skills of utmost importance when working in the commercial side of this business & this is especially true in refrigeration. Master your electrical skills. Good Luck
I don't want to discount your statement about electrical knowledge, but I will have to disagree some. It doesn't take a genius to troubleshoot even a good size walk in refrigerator with a pumpdown system.
I'd focus more on the sequences of operation to start with. What happens first and in what order it will happen. Once you know this, you can then evaluate what is missing and go from there.
What's the purpose of your statement if you aren't discounting it? Sounds as if you are telling this kid he doesn't need to understand electric control circuits.
I certainly agree with this too. But having sound electric understanding is very important in my book. Maybe I think this way cause I have better electric skills & knowledge than the average guy. My first trade for years before learning refrigeration.I'd focus more on the sequences of operation to start with. What happens first and in what order it will happen. Once you know this, you can then evaluate what is missing and go from there.
I do mostly light commercial but have done some residential and heavy commercial. We are actually working right now on a few residential apartment buildings with up to 70 apartments in one which we are installing a vrf systems in each apartment. The troubleshooting on these units are probably similiar to refrigetion since there are a lot of solenoid valves.
True a walk-in cooler is straight forward. After that it can get pretty perplexing moving on to a freezer. If one does not have good electrical skills then he/she best be looking for the schematic.
I've come across some pretty screwed up wiring before , especially with freezers with heaters and time clocks and defrost delays and points not making good contact and LPS and HPS going bad and Ranco switches , wires melting on the heaters .... oh buddy you will have fun with electrical issues
I was recently in your position, but i got lucky and was able to learn by experience with my company we got a ton of refer accounts all at once. From my experience i found reading in your hvac book from school helpes a little bit well to get to know the sequence of operations of each different application, and talk to pple from this website helped me out alot!
Jump right in head first and fake it till you make it! Goodluck
Sounds like someone has had to arm wrestle some foreigners. I guess I have a little advantage in that arena ( having traveled overseas ) I had to adapt to survive in those cultures. The basic code was " when in Rome act like the Romans ". Problem here is they seem to not follow that same practice. More and more of my customers are becoming foreigners. I have had to developed new ways to tend with this. One thing I have found to be true is once you have there trust the haggling seems to go away.
The point that I was trying to make was you not only have to be able to troubleshoot electrically, knowing who controls what is just as important.
Example:
You walk up and compressor isn't running. Start checking your safety circuit and LPS is open. We all know where to go from there. Question is, if you didn't know that your next stop should be the tsat or the llsv, what benefit would more electrical theory/practical experience would help you?
Troubleshooting is troubleshooting. It doesn't matter what percentage of problems are electrical, mechanical, refrigeration, or dirt. You better be compatent in all phases. All are equally important because every call is different. If its an electrical problem being an ace mechanical tech doesn't help. If its a ref problem an electrician will be screwed. Etc etc etc.