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- เผยแพร่เมื่อ 18 ส.ค. 2024
- Came back to do the repairs we bid for in a previous video. Do you think I did the right thing here?
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Good job AB! Much respect for working in the heat. Make sure you're taking water and car air conditioning breaks.
to hot brother !! should've went to the truck, turned the air on and re-grouped / you did a hell of a job especially
with the heat slowly cooking your brain GOD BLESS you buddy
Dang it was that noticeable 🤣🤣🤣
Great job, brother.. that's a rough situation with that call.. super cool video thank you for sharing.. keep the videos coming 🤟💯🌎
Nitrogen gas is inert. Unlike refrigerants, it will not swing during a pressure test at varying temps. It will be stable, ie both sides equal like you said. In an attic, with nitro pressures from 250-350, you may be able to hear the leak in the evap. Attics are super quiet. Sometimes you’ll surprise yourself what you can hear with your ear by the coil. I’ve also used audio type leak detectors. You’d be surprised what they can pick up audibly. Leak will sound like someone blowing in your ears, 20’ away, no matter how loud it is in the ambient surroundings. Some guys will mix nitro and small bit of refrigerant, with high nitro pressures, you can pick up the leak with a refrig detector. I’ve never used UV dye for a leak. Zombie mismatched hackery units impossible to charge. Good vid.
I've heard the sound leak detectors are top notch. All I've got is my dr87 but at this point I'm just sad we are attached to this unit now 🙃
Yes, the pressure can swing during a pressure test. If the temperature changes at all. Refer to Charles law on gasses. Charles' Law tells us that the volume of gas increases as the temperature increases. And then Boyles law. Boyle's law is a gas law which states that the pressure exerted by a gas is inversely proportional to the volume occupied by it.
Aye bro good work on that call, you did what you had to do and its working at the end of the day good work, also good thinking on the speed tap last week i had a callback on 4th of July due to a recent blower changeout my coworker did, and he did not check the speed taps and it was causing the unit to freeze it was set to low which on the chart was for 2.5 ton where it needed to be on the max which is a 5 ton. Airflow is a commonly overlooked issue with A/C man its crazy.
It was just weird to me, on that medium speed tap the pressure was slowly dropping but once I switched to low speed the pressure stayed in the 140s
you can use that to see what your supply should be according to humidity and temperature in the space
Great job!
A bit off-topic, but here's a puzzler for HVAC techs: Everybody knows Ohms law: Amps= Volts/Ohms. SO, a White - Rogers type 91 24 vac contactor. measures 17 ohms coil resistance with your multimeter. 24 volts /17 ohms = 1.4 amps. So WHY does it really only pull - 335 milliamps (or 0.334 amps) ?? Only the sharper techs need comment.
you can only do what the customer is willing to pay for , don't beat
yourself up. 😊 call it a day that's a wrap go home see ya tomorrow
Good job with the fff up cards you were dealt.
Think you did a fine job with what you had. My first instinct would be Cya, cause the moment you touch it. It's yours. Your thoughtfulness should be commended. Fortunately my company would turn them down.
I honestly thought we would be, but I was wrong
Totally understood. No flak coming from me.
lol. Underground Railroad access. You at Harriet Tubman’s house?
Nah, but I think she popped in here for a quick nap
the heats getting😊 to ya buddy
I can't lie...it is
Refrigerant trapped in the oil in the compressor will make vacuum take forever. I wouldn’t worry about moisture too much, it’s just refrigerant boiling off as you vacuum.
Ah, so that would've just needed to be a longer vacuum? Does it matter that the condenser isn't level either?
@@AB_HVAC condenser being level isn’t an extreme concern. Vacuuming a long time or vacuuming then purge with nitrogen a few times will make it go faster. Get it down to 1000 then add nitrogen just to flat or a few psi then vacuum again and repeat as needed. It’s still a pain. Also in extreme situations change the oil in your pump at least once after the first nitrogen purge.
No static pressure readings? No airflow measurements?
That system was a real pile of shit and sometimes all you can do is get the suction line as cold as possible and hope for the best. I don't know if I would've dropped the fan speed, I'd try and move as much air as possible. I'd say under the circumstances job well done.
Thanks man 👌🏾