I have pretty good luck selling commercial coolers/freezers here on ebay. I sold two Beverage-Aire reach ins for $1600 recently. Generally coolers go to auction for a reason. If there is a hole in the system that let the refrigerant out its not worth finding the hole and fixing especially if its anything other than R134a. I find that is most often not the case. The systems are usually sealed and the culprit is a start capacitor or a dirty evaporator coil. Sometimes there isn't anything wrong with them at all.
I got a couple Delfield Ice Cream / Milk Dispensers. They are just reach in freezers really. I sold a nearby Jiffy Treat a couple coolers recently and he is interested in these Delfield units I just got. They came from a school and the school was using them for milk. You don't want frozen milk! They shut off right at 45F. They get cold fast, and they are clean. My potential customers is going to want them for ice cream and is going to want a lower temp. The health department is going to require a lower temp for ice cream storage I am sure. Rather than wait on him to buy them and then ask me how to turn them down I was going to go ahead and turn them down a little. Just to other side of freezing.
I believe these units also have a heating element to prevent them from frosting around the top.
So I open it up expecting to find a typical thermostat with and adjustment knob. That is not what I found. I found a Ranco 010-1418 controller. I must set "High Event" to anywhere from 0-50PSI and the "differential" to 5-30PSI and then the "Low Event" is the High Event minus the differential. The capillary is measuring the pressure in the refrigerant system right out of the compressor. Sensing when it should run based on system pressure rather than a thermostat is probably more accurate and reliable but I don't understand it.
More than wanting to get this cooler turned down for my potential customer, I want to understand how this works. What is "Low Event" and "High Event"? Low and High pressure? Does low event mean that when the pressure is lowest because all the refrigerant has expanded, done its job and needs to be compressed again? So Low Event is kick on? Is high event when the pressure is high because the compressor has been running and thus that is when to kick off? If I am right about that then do I need to turn the high event UP a little bit to tell it to compress to a higher PSI before shutting off? I keep getting this all flipped around backwards in my head. I will just adjust it a little and see how it acts, trial and error. I would really would like to understand better how it works.
@baydistributionllc wrote:Did you really click helpful on your own answer. That is silly.
Ill bet you another ebay seller knows and will answer. Telling me about how you don't know, or other places to ask, is NOT helpful. You should unclick that.
I got it to 38 by turning the pressure DOWN which is counterintuitive to me. I will turn it a little more to about 30 while making sure the differential isn't less than 0 and the actual problem will be solved.
You would be better off not responding to post you don't know the answer to.
