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-   -   charging an unit (http://www.diychatroom.com/f17/charging-unit-158998/)

astovall7 10-04-2012 10:19 PM

charging an unit
 
:no:what are the first step to the last step in order form in charging an low charge ac unit for your home properly i just finish hvac school and i didnt learn what i needed from the school because of poor instructor and school thank u

Missouri Bound 10-04-2012 10:23 PM

How have you determined that the unit is low on charge?:whistling2:

JJboy 10-04-2012 10:30 PM

Do you have the test tools?

Missouri Bound 10-04-2012 10:35 PM

[quote=astovall7;102399 i just finish hvac school and i didnt learn what i needed [/quote]

Then you didn't learn anything.:no:

ben's plumbing 10-04-2012 10:59 PM

Quote:

Originally Posted by astovall7 (Post 1023996)
:no:what are the first step to the last step in order form in charging an low charge ac unit for your home properly i just finish hvac school and i didnt learn what i needed from the school because of poor instructor and school thank u

take the course over with another school....better to learn 1st... BEFORE YOU GET IN THE FIELD....NOT TRYING TO LEARN WHILE MAKING MISTAKES AT OTHERS EXPENSE...SORRY....ben sr

hvac benny 10-04-2012 11:28 PM

Start as an apprentice or helper, that's how you will learn

carmon 10-05-2012 12:42 AM

nothing good to come of this... i hate to say it but you don't know enough to even be dangerous yet... lock your tools away and go back to school..... or work along side someone.... pay attention and learn

beenthere 10-05-2012 05:41 AM

Quote:

Originally Posted by astovall7 (Post 1023996)
:no:what are the first step to the last step in order form in charging an low charge ac unit for your home properly i just finish hvac school and i didnt learn what i needed from the school because of poor instructor and school thank u

Step 1. Determine if the system is actually low on charge by taking sub cooling and super heat readings.
Step 2. look for leak.
Step 3. Repair leak.
Step 4. Change liquid line filter drier, and vacuuming system.
Step 5. Add proper refrigerant until sub cooling and super heat are at there proper readings.

evapman 10-05-2012 10:25 AM

Go out and spend a few grand on tools & test equipment, then back to school and learn how to use them.:thumbup:

bobelectric 10-05-2012 07:35 PM

If it's a blend like 401-a, you must empty and need to refill because you don't know what happened to the freon mix.

Nickhvactech 10-05-2012 10:00 PM

1. Verify if there is a leak(superheat and subcool) Verifying its not a restriction, dirty coil, air flow issue with duct work.. return ect.. can go on and on (low sub cool and high superheat-leak)
2. Once verified, find leak.. replace or repair .. pull vacumm
3.Determine metering Device and freon type
4.Charge using superheat or subcool(depends on metering device)
5. Some newer Condensors have tags stating what the require depending on outside temperatures
Good Luck.. but school does help before getting on your own!

carmon 10-05-2012 10:31 PM

well if your adding refrigerant one must assume there is a leak or the system was undercharged..:eek::eek::eek:


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