This charging method worked on Chiller 

I do a lot of 134a work on centrifugals. Ive timed recovery rates using 1/2" hoses, 3/8" hoses and using a water cooled, belt driven YORK Recovery Machine, as well as a Fieldpiece Recovery Machine. I have been able to repeatedly move 1000lbs of R134a Liquid in 50 minutes using three 1/2" hoses in Push Pull orientation. You move about a pound of liquid every 2-4 seconds. A 125lb tank would take less than 15 minutes to pump out. Rate is the same with the smaller air cooled machine by fieldpiece or inficon. Vapor can be anywhere from 20 seconds per pound with a 1/2" water cooled RSR, or 60-120 seconds per pound using purely air cooled RSR. Last year I made up a water cooled condenser using a coaxial coil to go with my fieldpiece which keeps the tanks cool and the compression ratio lower. Ive thought about doing a daisy chain between multiple tanks but the tanks are empty in minutes anyways. Not to mention bringing all of those hoses and fittings up, hooking them up and purging them (and making sure nothing is leaking.) When my liquid hose sight glass runs dry, I switch tanks. When all tanks are empty, I bring the vapour down to 5-10psig to recover as much vapour left in the tank and into the chiller. There can be quite a bit of lost refrigerant the customer is paying for in vapour form. A 1000lb tank will contain about 30lbs of R134a from 500 microns to 60psig. R134a vapour specific volume @75psig is about 0.5 cubic feet per pound and a 1000lb tank is 16 cubic feet... so 16cuft / 0.5 cuft per lb = 32lbs R134a for 16cuft @75psig. (This is what I think about when pulling gas for days at a time... Im sure all chiller guys are nuts in certain ways.) My phone is full of notes like this that I help explain thing to apprentices. Different refrigerants, torch tip flow rates for your oxy acetylene tanks. We learn all this stuff in school but forget most of it when youre done. CHEERS!

Its cool to see how much experience you have and still taking time to do things smarter and more efficiently

Former tech push pull method will work i used on many a R12 centravac air cooled chillers

People complain how much it cost for quality HVAC tools and almost ALL of them are made overseas. Can you imagine what they would cost if they made them here? I'm ok with it as long as the company I'm invested in provides support when needed. Both Fieldpiece, and Navac have shipped me replacements next day without question.

I really enjoy your videos because I've never messed with systems of that scale. Our largest system right now is a thirty ton Aaon gas pack. Our company is family owned and smaller, but I hope that we grow to the point where we are working on large commercial. Until I do, I'll keep watching your videos, and learning how heavy commercial systems do what they do. Keep up the good work.

Mic work's great! Super interesting process!

Great content, always keen to learn Chillers, Appreciated videos here in New Zealand 🇳🇿

A thermal camera sounds sweet.Then we could see liquid verses the vapor.Nothing can save you this I's the season of the vapors.

Good job bro keep up the great work

Great series of videos on this repair, smart idea with reusing the oil ... Blu Vac gauge is a rebranded yellow jacket gauge...YJ didn't have the app or Bluetooth...discontinued it and it seems Blu Vac gave it a new life with the app ...

Open up the chw valve, crank the water down to 5-6 degrees C. Chuck half the charge in on vacuum. Obviously vapour until saturation, then rest is liquid. Then turn on the machine and get the turbo to pull in the rest. Job jobbed. Nice to see a YT 👍🏻

I have the blu vac pro and micro. Both great micron gauges

Cool video

Indeed, good work on the audio fix! Sounds great! And yeah, we in the industry call them “lav” for “lavaliere”. Thanks for all the work you do on the vids, I seriously learn a lot by watching. I got interested in this stuff cause I basically became a building engineer as part of my video engineering duties, and wanted to learn about chillers! I used to work on large machines in my industry, and now it’s all computers; I’m totally fascinated by the big stuff like these centrifugal chillers. Thanks again.

The mic sounds good 👌🏻

Those vane pumps can produce a slight oil mist, but often the separator on the output can handle that. I don't see it as a big problem, you can also get activated charcoal filters for the outlet that will even suppress the oil smell. i don't see why the customer would have a problem, this is something that all pumps using oil have, there is no way around it. Also, you can just connect a long hose to the outlet and pipe it outside, the hose will not have any significant effect on the pumping performance.

I do similar work but for the pharmaceutical industry and we are required to vent the vacuum pump outside.

Thank You, Sir

Water hose gaskets work perfect and don’t fall out

My only fear of push pull with a lot of tanks is that the last couple of tanks get completely full (no room for expansion!) in the process. Next time you try it, weigh the last tank during the process. Thanks for the video

I'm just waiting to see what the longevity is of the Navac stuff.

Can't you hook a hose up to the exhaust and vent outdoors? Unless he's got a high vapor pressure for various reasons he shouldn't be dumping oil vapor for long. Food processing plants can get super strict though when it comes to this stuff

Could you essentially do this with the g5 twin although it would probably take a little longer?

Bluvac makes a awesome gauge and the app is great but it will never hold deep micron readings. Seems like it’s sensor is to sensitive and still reads small amounts of refrigerant degassing in the oil sump. Just my 2 cents.

What are they cooling that they need such a large chiller system?

poliester oil? eal?

so what is the bill on a repair like this ? 🤔

Is this is your own company sir? Can I apply?

I ordered from tru tech tools and got a free micron gauge, that exact one! Clogged with oil once and the bitch dont work no more :/

please dont get bullshitted too much by the navac sales reps. value design and make the stuff and navac puts on their brand. but dont let them think for a second that its in any way shape or form that they do anyhting else than moving boxes and give customer support from the american navac office. its just a value rebrand nothing more or less. and however you think about the brand: its "fine" not good, not bad. just decent stuff for a decent price.

Good video. You've got a lot of latest/greatest gadgets ($$) and a lot of theories. I think the oil pump cycling causing a broken bracket is way out there. If that pump runs that rough there's a problem. If you told me( customer) that you vacuumed the machine I'd run you off. It's called evacuation. If you're concerned about charging/evacuation time use1/2" hoses. Think you might want to stick with RTU and residential. BTW, 40 years chiller tech. and union.