Bevmax 4 running constantly

[Gretsching]

Hey Guys, looking for a little insight here. I have a Bevmax 4 at my shop. I have a location I'm taking it to the week of the 15th so I wanted to test it all out. I let it run overnight and noticed every time I go into my shop, it's running. I have the setpoint at 37. 

The machine does read 37 degrees, as does my separate temp gauge that I set inside. BUT, when I open the door for a while to mess around with price settings and things of that nature, it will warm up to say 50 degrees. Now, when I close the door, 15 minutes can go by, and the temp won't go down at all. Fast forward to the next morning, and it's back at 37, but still running. No error codes. 

The evaporator in the lower right corner does have a decent build up of frost on the upper half. Not just a thin coat of frost, but not a block of ice. Just a medium thick build up of frosty material. Does this sound like low freon? Also, are there any common air leak areas I should check? Any help is much appreciated, thank you.

[tblake05]

I don’t suppose you can check the low side pressure as it’s running, can you?

[Gretsching]

No I can't.

[tblake05]

To me it sounds like it’s a little low on Freon or the compressor is weak.

though the machine is big and completely empty... it would be more efficient if it’s full.

[tblake05]

Plus I’ve had frost build up when the temp is set just a little too low. Pretty sure the bevmax 4 uses a temp sensor and you can adjust temp in the settings. What is it set at?

[Gretsching]

Yes they do have a setpoint, as I said in my original post, I set it at 37 which is a common setpoint.

[cvending]

Is the evaporator fan running? The compressor is on a delay start after door is closed. Somewhere between 3-5 min.

[AZVendor]

The frost is probably from an air leak - the cabinet isn't air tight.  If the frost dissipates over time then it's not low on freon.

[Gretsching]

Don't know if anyone will be seeing this particular post anymore but, in my situation, the constant running was indeed caused by an air leak like AZVendor said. I found it in the back of the cabinet where the left side of the refrigeration unit gasket meets the top of the doghouse. It was about 16th inch gap. I installed a new high compression gasket and it sealed it up and problem is gone. Thanks for the help.