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Just something i was told by a trusted guy that works at a supply house when we were having some troubles. I never went looking around for info on it till now. I was suprised there was no info. ...

Hi Michael,

Thank you for your interest with Emerson Climate Technologies.

No they are not rated for vacuum pressure. They may stand it for some time but reliability is not guaranteed under...

Thats completley fine. Just the way things are to be done per our engineers. That is how new pipework is to be tested before any refrigerant hits the lines. If it can't pass the micron test it must...

This was a single system, not a rack. Usually the oil is removed from compressor for micron test on these. Most racks each circuit will be tested individually before tyingn into rack. Just the way...

We were having issues with systemn holding micron. Has to be pulled down below 300 with no rise for 24 hours and that is what our supplier told us. That did not end up being the issue, just what we...

I cant find any. We were told by our supplier. I just emailed Emerson and will let you know what they say.

Just to warn you, the o-ring in copeland oil sight glasses isnt rated for deep vacuum and may not hold vacuum level.

Haha funny you should mention that. On this same system I found two return air fans that haven't ran in years. Put new belts on and started them up....holy cow. It was foggy in the back hall of the...

Can anyone give me some good info on how to interpret static pressure readings. Just for a little background I am a service tech for a grocery store chain and do 90% refrigeration. We get to HVAC...

The biggest thing I was looking to use it for was checking the heat exchanger. Since some of the older units we have are near impossible to get a good visual inspection of the heat exchanger.

Yea expensive is not what I'm looking for. Just something to help me get started with.

Now I have a dumb question. With RTU's do you just stick the probe straight in the exhaust and still get an...

I know combustion analysis has been a big topic on here, but I service strictly supermarkets my main job is refrigeration. We also take care of the hvac which is normally pushed to the side...

I was at a Sporlan class and someone asked a similar question. He said to remove moisture a drier would have to be baked at a high temperature for hours.

It was converted from mineral oil and 502 to AB oil and 408a. This was years ago it was converted. It must have had oil issues in the past as someone put an oil separator in it. I just think if the...

It's AB oil, I've seen dirty screens before I've just never seen it so bad it had to be scraped off. I'm curious what all the sludge came from?

Have you ever had a copeland oil pick up screen so dirty it looked like mud? I had to scrap it off with a screwdriver it was so bad. The screen actually split. I'm guessing that's how it kept...

Accumulators are a great way to protect your compressor against liquid. Whatever reason it may be low loads, evap fan motors go out, txv gets stuck wide open. It's a good investment for the...

One of the first times I used my ak's I had the wind catch a panel On a hussmann remote system and slam shut on the screen of the gauge. The only thing it did was put a small cut in the rubber boot...

I have a customer that has asked for a way to remotely monitor case temps. These are just a few split systems and some self contained equipment. Looking for some ideas for the most affordable...

Haha we'll have to start pulling trailers

I've heard the same thing about it being phased out due to high GWP ratings a few months ago by a local supplier

Well I have a system I'm trying to program on a press2temp sensor for and it's not available on the version of reflecs. I didn't know if I could update it to get that feature

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Is there a way to update the software on the reflecs controller with ultrasite?

I was just working on a Hussmann deli service case today and they told me just the opposite. Set the Thermostat's to 28* discharge air, and set the EPR a few degrees below the evap setpoint so if a...

I've always had good luck with the strap wrench on stuborn filters

This is why we never hook up to critically charged systems unless your positive you have a refer issue. Also probably why alot of critical system don't have access ports...

Yea it's a good way to ensure you don't plug up the new one. Normally do a nitro purge as well to try and get any oil out of the evap and accumulator as well

We change the oil in the compressor with a plugged cap tube and poe

I've :censored: up and last 400# of hp 80 before. **** happens as long as you learn from it. I was tol a long time ago it only a mistake the FIRST time

Same here. Just bleed the vapor out of the hoses

you can get some milkstone remover at a farm supply store. i wouldn't use it more than once though. then you will no doubt jack up the evap.

:ditto:

Also like previously mentioned, learn the defrost cycle and your in there!

craftsman, gearwrench, and klien. Also a fan of the veto pro pac :cheers:

It does come on there from the factory. We do warranty work for true and i've seen it on a couple of the 72f units

Thats a good idea. When you walk up on a unit thats leaking on the stem and the plastic cap is cracked because someone put leak lock on it and cranked on it till it snapped. :gah:

i've never seen a system messed up from dye. Not saying it doesn't happen but i have never seen it. We do use dye. I personally try not to, but sometimes it is a good alternative. I carry the yellow...

We deal with multiple refrigerants day in and day out and only carry one recovery unit on our trucks. We have never had a problem with it. I always make sure i purge the excess pressure out of the...

:yes:

:yes: I have seen this more than once cause intermittent freeze up's and it always does it overnight or when your not there. Can be extremley frustrating

Get an Allen wrench not sure what size and try tightening up the fitting on the side. Took care of that problem for me

I don't think i'm opposed to anything right now.

I am no self employed, I am a refrigeration tech that currently works on anything from parrallel rack systems to soda dispensers. I have an associates degree from our local college in hvac/r tech. I...

looking to get into supermarket refrigeratoin in the cenrtal illinois area. i have been doing some small scale supermarket work in the area and want to get more involved. any input is appreciated.

that looks like it was drilled...loo how clean the edge of the hole is:.02:

Its on the faceplate. Thanks for the help!:cheers:

Hey Doug is there a way I can get a replacement cap for my ak900. The wind caught a panel off a condensing unit and slammed it against the AK. All it did was cut the part of the cap off that holds...

I appreciate the info guys. Still pretty new. Especially to the supermarket world. Any info is greatly appreciated:cheers:

I installed new internal parts and replaced the pilot assembly

I verified it was the EPR building pressure by pinching off the bottom pilot line. If I'm thinking right. If the high pressure line shuts off with the solenoid on the EPR won't the valve go wide open...

I recently came across a system that was out on oil pressure i reset the system and observed my oil pressure. I was running 50 psi of oil pressure. I went ahead and replaced the compressor contactor...

How does that work? Just curious