True R290 Cooler Warranty Call. Cooler is not cooling. 

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So potentially see it on bigger equipment, cool. Yes, the scale is great.

It's the same limit in Europe. I never see equipment with a charge larger than 150gr

What is that process ?

The IEC just approved an increase in the charge limit for propane (R-290) from 150 to 500 grams. How does this affect you? The standard revision allowing up to 500 grams of R-290 is in the international version of the equipment safety standard for commercial refrigerators, IEC 60335-2-89. The North American versions of the standard (UL and CSA) will go through a revision process of their own starting later in 2019. A working group composed of U.S. and Canadian experts will make harmonized changes to their standards based on what is best for North America. This may mean that a charge limit of less than 500 grams for R-290 is approved, or that it is only allowed in certain types of equipment, but we will have to wait and see. That work will likely take one and half to two years to complete. Europe, on the other hand, will likely adopt the IEC version of the standard with the 500-gram limit for R-290 starting sometime in 2020.

Thanus Stevenson I tried to post the link to two articles, but the algorithm keeps deleting it. But if you Google R290 limits you will get the AHR news article. The UL approved 500 grams in open case units, some of the information is dated. Cheers 🍻

It all depends on the engineered Condensor split. Most of the new units are now a 15F split.

Thanks master ,when you come to Seattle wa and I invite you a lunch to thank you for this videos that I been learning a lot 🙏🙏🙏🙏🙏🙏

Yes and some on the new “higher efficiency” walk in cooler/freezers.

Yes Delfield has told us not to. True has told us to continue using it. Until I can’t find a leak with it, I will continue to use. The success rate has been high with this specific meter.

Yes sir

No not really, but based on your suction pressure you will be able to diagnose the issue with simply knowing if we have hi or low head pressure.

@REFRIGERATION KITCHEN TECH so do you just make a educated guess on what TD to use?

We can vent it by code in canada in a room that is well ventilated and no source of ignition

Yes need to crimp and shut for R290, way too much liability.

Can is sealed, once you take it off the scale, it is sealed again.

Once you got oxy/acetylene, you can’t go back. But for some of these smaller units I should maybe try a btank/map gas I guess.

Charge is written on the nameplate.

Ya agreed

No model # and can’t even find it online. It looks identical to the mastercool 98202, just different labels. I’m pretty sure it’s the same one.

You need the testo smart probes and app

Ya I’ve used my normal scale a bunch of times but don’t find it accurate enough.

Ya I do that once in a while, but the pressures don’t matter to me as I am looking at saturation temperatures

In most cases, reach ins are 20TD, walk ins 10TD.

But the evap coil seems to be running too cold, can you post the manual of the unit, i think it should be as per manufacturer, other than that what a great video.

They now have a scale that the bottle screws into with a very small hose so the amount going into the system is very accurate. At the end of the day, if you know what your suction pressure needs to be, that is what we charge to and that may add an ounce or more to the listed critical charge.

With other refrigerants (134/404/22) I only put 5-8 psi then add refrigerant and have found leaks. In this case I was up 16psi so the meter should be able to pick it up, regardless the nitrogen pressures will let me know if there is a leak. In Canada, we can’t let refrigerant out into the atmosphere, it’s a huge fine, so we can only add a small trace amount when leak testing. In the case of R290, we can vent it, so it would not apply to R290. I found when I was using my other scale, the critical charge seemed to be off slightly like you are stating.

Yeah, I ran into the problem of the R290 cans with the valve that taps the can . They don't work on the scale. Have to use the self sealing national brand. But united refrigeration sells the national brand , and that's were I got the scale.

Yes

R290, I was using the combustible leak detector. I would of used R134A if I was using my regular leak detector.

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doesnt take much to do damage. 1/2 cup gasoline can do tremendous damage

United in Missisauga now has it. All the others have never even heard of it.

@@REFRIGERATIONKITCHENEQTECH thank u , ill ask rob from concord to get it for me

120 was when I was still adding nitrogen and gauge valve was open. System equalized at 112, that’s when I start to time the pressure test.

A lot of the newer stuff is now a 15F Split for efficiency

@@REFRIGERATIONKITCHENEQTECH thank you, how will we know this? I've never seen the TD on a data tag.

Unfortunately you won’t know

Lololol

Yes newer units are using the digital one

I got it from united refrigeration, but the fitting has started to leak so I’m looking to get a different brand

@@REFRIGERATIONKITCHENEQTECH damn that sucks wasn't cheap either

I’m finding when I do that with the units with small charge amounts, the suction pressure is too low and the unit takes too long to cool.

Depends on the situation. In this case, manufacturer did not ask me to.