/r/refrigeration
A place for professionals to have discussions, ask questions, and share stories related to the Commercial and Industrial Refrigeration industry.
Please read through our rules before contributing! Posts about residential or domestic units will be removed. These topics should be directed to the respective /r/HVAC and /r/Appliances subreddits.
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/r/refrigeration
I work at a bar, they come service our ice machine every 4 months, every once in a while we run into the issue of the ice machine not making enough ice, it'll do great and then all the sudden we have a machine that's half full of ice and not producing ice fast enough, I have the manual and I usually can get it up and running again but on our big weekends we are running so low on ice that we won't try to even open it. It's also been running a T4 code for the last 2 services they have not cleared them when they service it. Tonight it put itself in HPCO, I'll be back in in the morning to look at it but we have our Halloween party on 10/26 (technically today) I'll go buy ice if I have to but it's getting quite frustrating because why does this keep happing and why haven't they fixed it? Any help out there? Temp in the bar is within range, water supply is good, can't figure out where the airfilter is or water filter (I'll investigate more tomorrow), Im about to lose my mind.
This may be a dumb question, but do people use meggers during pm’s to check motor insulation degradation, to quote to re&re motors preemptively before they fail?
If this does not belong please inform and delete.
I am a 14 year HVAC technician who has worked on some walk-ins, reach-ins and other commercial refrigeration equipment (though at limited capacities such as cleaning and replacing parts with factory replacements)
My wife has a store with a Chinese reach-in (premium levella), the control relay has failed and I can not find a replacement anywhere. The control part number on the item is STC-1A-P. The only part I find anywhere is on ebay and is a 220v option instead of 110v. The control that has failed appears to mostly be a relay that is connected to a small segmented led display like a typical PID looks.
My question is this, can this setup be replaced with a typical 110v PID? I know it would require setup/programming which I am familiar with, as well as cutting spades off a couple wires to attach to the PID. Overall draw when running is less than 4amp (bypassed control to ensure operation and check amp draw. )
I'm just not sure if this is acceptable or if I should also install a relay between the PID and the load.
Edit: 1 goes to 10
Hello, So recently my XR30CX r0c1 is having the usually of this Serie where the compressor contact doesn't set off and keep working even after reaching the temperature.
So I've ordered an another model and I think I figured mostly where all the cable goes but still prefer to ask around to be sure
We just got a new cooler/freezer at work two weeks ago and the thing is already freezing over. The part that’s listed in the pic was somehow not installed, it was left in the box by the freezer. I’m wondering if this is has something to do with why it’s freezing over already. Boss said they told him it happened because we open the freezer a lot and don’t shut it. This is not true whatsoever. Would love to hear from you all. Thanks!
Are these stupid expensive to run? Got one on marketplace for pretty cheap.
Danfoss 1/2" solenoid valve inner metal ring snapped in half. Anybody ever seen this before?
I'm a compressor tech and lots of customers have refrigerated air dryers, which break. I picked up my 608 and learned on the job, I'm now the refrigeration tech at my branch. The guy who trained me made his refrigerant log book with a copy machine in the 90s and gave me both applicable pages.
I'd like to just buy a logbook, what do you guys use?
I need help, advice. Tell me how to find a job in the industry with 0 experience. I have licenses q1-q99, a35, f60, g60, p99 and working on s12-s13
I have a restaurant with hoshi km ice machine. Inside is cleaner than most. Lately had green slime on exterior of machine between head and bin. After diving into it I found a crack on the white plastic allowing water to leak thru machine. Evap is good, machine in great shape. Do you guys have anything that you have used to fix this? Most will say time for new head, but shes solid and clean. I was thinking pool epoxy maybe.
Just had a quick question. Is anyone using an electric pump sprayer or some sort of electric pump for defrosting evaporators for coolers? If so does anyone have any recommendations thanks
Does everyone say good morning where you work? Do you say it? I find I have to remind myself to say it to people…generally I’m pissed I’m awake anyway, but now I gotta be nice? Anyway, just curious.
Just had a new compressor bought, engineer #1 decided to connect power up to it ( no pipework attached completely open ended suction and discharge) and let it run for a little while to check it was working. Engineer #2 said that would be damaging to the compressor. Please settle the debate for us.
The place where my company used to buy it no longer deals with shelving. Need stainless steel shelving for a freezer that we just put up. Freezer manufacturer doesn’t sell shelving.
Hello, I am an apprentice in Ottawa Ontario and I’m looking for a shop that does commercial refrigeration like racks, walkins, self contained ect, preferably unionized as i am in the union.
Hi everyone, I am going to attempt red seal exam in upcoming months in Vancouver. It’s my humble request to everyone, please help me about study materials, any tips, anything would help me to clear my exam. I dont know what to study and from where to study. Thanks
I know that this is probably a dumb question, especially since I am in a different field. I don't understand the difference between the relays. I have a P6R8MC OR0403 that I replaced and when searching for my part I found some OR0404s and OR0405s that looked the same with one pin and same dimensions. OR0403 and OR1001 have the same number of terminals and the same dimensions.
I tried to google what the difference was but my uneducated mind didn't understand what I was reading. This is 100% just to sate my curiosity, thank you for reading (:
I'm seeing more cross temp units around. Are they as good as dedicated frig or freezers in maintaining temps? Are there any other issues people have wit them?
How much do you all get per year for buying new tools. Not talking replacement just flat out shiny and new. $150 doesn’t go far .
I’ve got this RTAF Trane chiller with reoccurring pool temp sensor errors. They were found out of calibration first time, so I changed them out. Now I’m getting same problem. I’m also getting random high discharge temp failures on just one circuit.
High discharge temp issue - temp is around 140 degrees. Looks to be a mechanical stat that enters comp that controls that. Oil Pump is working and oil reservoir level is acceptable based on IOM.
Pool temp sensor issue - I’ll look into the liquid level sensor next.
Any thoughts on what could be happening with my machine?
Not sure if folks here have any ideas but.
We brought a new polar upright glass fronted display freezer for our shop to hold litre tubs of ice cream.
The units display is -22. But the actual temperature is about -12. I’ve put a little thermometer in there, a block of jelly with a probe in it. So it confident it is -12.
We’ve had countless engineers visits.
Finally it’s been replaced with another unit
But the same problem is persisting on the replacement
Am i missing something.
Is there a know fault with polar controllers, a bad batch or something. As it's driving me mad.
Walked in to work today and our break room was flooded. This unit connected to the ice maker was laying down and making a lot of noise. I turned it upright and it seems to be fine. Is this how it's supposed to sit?
I need some advise or help on this one. I been working on a walk in cooler. I found a leak and repaired that and recharged system, found my superheat was high about 25 degrees and saturation around 22 degrees. I open the txv and my superheat dropped to about 13 degrees box temp at 41 saturation 25 degrees. So I believe I fixed the txv issue.
Question: Now that the weather is changing I noticed this unit does not have a head master or fan cycle control. Only a suction cut out. Is this condenser missing the fan cycle control?
Condenser is copeland model from 1991 original r12 refrigerant recip.
👋 Hey everyone! I’m Wayne. I love all things cold room and refrigeration. Excited to chat and learn from you all!
Hey guys,
just starting my level 2 hvac course in January just wondering what I should pre read or any study guides to help me get ahead in the course before I go!
So just started at a new company got a call for rack down everything off on oil failure nothing going through the separator to the reservoir anyway pretty standard stuff replaced the temprite filter o ring was broken. I was lucky there was a spare in the rack room. reservoir filled with oil 1 ball floating after I was done and everything was good to go.
Anyway Found out later that this has been a pretty frequent issue. I'm just not sure what would cause that to keep happening. is around 200 407C which might be a little high but there was a big load on the rack. Possibly too much oil in the system or something to do with the oil float because the smaller one on the other rack with no float doesn't have the same issue. Anyway if anybody has had this issue I'm curious to know what caused it.