Question about Randell (84111NPCB)

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Temperature control we have a randell pizza prep table, model dpm102r...the problem we are having is that the temperature is fluctuating significantly. It has been filled with freon 2x, they checked for leaks and none were found. We have been told that changing the thermostat might take care of the problem or maybe put in a timer. Is there any way we can adjust the thermostat ourselves? what setting would we need to put it on. At what PSI level should it be?...In the part where the coils are(is it the cooler?) there is a pipe, is it normal for this to be hot?

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  • Dennis Boxerman Jul 20, 2010

    Let's start with the obvious. The refrigeration system is a sealed system. If freon has been added 2x, there has to be a leak. It must be found before you put any money or time into anything else. If you don't you will be replacing parts and the system will still leak it's freon out and not work right. Start there first. Get another tech to search the leak. It's got to be there unless it was improperly charged the first time.



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go to this web site and check out the manual. It has some general info that can get you started on narrowing down just what is happening.
If it has been filled with freon 2x, there is an issue. Either it has a leak and it has not been found yet, or the amount of freon in the system is incorrect.
Usually, adding a timer is for defrosting purposes. Is there a frosting up issue?
It could be a thermostat issue but it is not set by the PSI, but by actual temperature. If it is a control that you have to set the PSI, an experienced refrigeration tech should know what to set it at.
Let me know if I can be of any further help.

Posted on Dec 20, 2010

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Sounds like your unit may be over charged with gas. The pipe feeding the coil should be warm, not hot. It's the smaller pipe that feeds the coil. If it is more than warm the case is over charged with gas and/ or dirty condenser. If box is not leaking gas freon should not have been "filled" 2x. Sounds like you may have an erratic temp control s well.

Posted on Oct 01, 2009


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