These are great videos you've created, thank you for sharing. I'm learning so much and would like to ask you, are you filling in the unit while it's turn off (1) and second, you are loading back the refrigerant on both high & low lines (2), correct? If the unit was turned on, would it only go through the low line? Thank you.
That is correct, you put as much as you can in both sides while it's off. And then when it won't take anymore, you have to turn it on and slowly flash it in on the low side. Cause the high side will have too much pressure.
@hvacjames509 Excellent. I really liked how you covered 3 big topics that I was interested in. It also looks like there's a big investment in equipment to do the work, pump, vacuum, temp clamps, etc...
@jaimedpcaus1 It is. You should come up to Spokane. We offer a full-time 9-month training program with 100% job placement with classroom, hands-on, and field work training. We offer full financial aid and also work with GI bills. Classes start mid-September. Contact the office if you're interested. 5097478810
Good job but my question in the factory test labels pressure PSIG was Low 240 and high 450 with 60oz of the R410a, that's 60 oz = 3.75 lb. why of the difference in PSIG. Why not charge the system fully, then put the valve cores back in with the tool.
I get that question a lot and it's because I had a micron gauge on the system without a way to valve it off so you don't want to put too much pressure on those so I just bring it up high enough so it's not in the vacuum and then get my micron gauge off of there and then finish. But ideally if you had another core tool on the side to act as a valve then you can just valve off your micron gauge and dump the whole charge in at once.
Yeah. I probably should have gloves on. But I've been teaching long enough I tend to not screw up as much as I used to. And thanks for the comment. Please send more subs. I'll keep making more videos.
How to calculate the charge required by looking at the temperature? What should be the difference between Hi & Lo sides for r410a? Is there any rule of thumb in regards of pressure required for Hi & Lo sides?
@@hvacjames509 so I recovered the remaining refrigerant in my system due to a leak I recovered about 4lb 6 oz. I have the yellow hose connected to the red side(liquid side) and I'm letting in through the suction side.
@@hvacjames509 so I recovered about 4lbs of refrigerant from my system due to a leak so now I'm putting everything back in I connected the yellow house to the red outlet of the recovery tank and I'm throttling it in through the suction side but it took like an hour to get one 1lb in I used nitrogen to see if I had any other leak but my pressure held for 20 mins
So I had to recover all the refrigerant from the system due to a leak so now I'm putting all the refrigerant I recovered back into the system which is around 4lbs that I recovered I have the yellow hose connected to the red outlet of the recovery tank and I'm letting it in through the suction line it took about 40 minutes go get 1.2lbs in
Some tanks have vapor on the red. You can't go by color. Also, you need to dump as much in as you can into BOTH SIDES while it's in a vacuum. Then you can flash in the rest into the low side while the system is running. If the system is off you'll have a hard time getting liquid or vapor into either side after a certain point. Especially from a recovery tank as, you'll never get as much out of a tank as you put in.
