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Machine runs 24-7


jim lee

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Posted

Hey people, been awhile.

I have this.. Vendio? Machine. Old Pepsi machine. Anyway, It runs all the time. Then I notice, as the weather got really cold, (No heat in here.) It never stopped running. Do they never stop when its cold enough? Or, maybe the fridge part is getting iffy? Is this something I can mesure to see how well its doing inside? Is there spec.s for this?

Thanks!

-jim lee

Posted

You need to explain things better by providing more detail.  When you say it runs all the time, are you referring to the compressor?  The evaporator fan is supposed to run all the time, but the compressor is only supposed to run when the thermostat tells it to.

If the compressor is running literally 24/7 and the soda is at the right temperature (not frozen, not warm) then I truly have no answer for you.  If things get warm as the ambient temperature outside goes up though, then you probably have a machine that is low on refrigerant.  What you describe doesn't make sense to me.

Please verify whether you are referring to the compressor and/or condenser fan OR the evaporator fan.  The evaporator fan is on top behind the delivery chute, the condenser fan is on the bottom in front of the compressor.

Posted

If you don't freeze your cans from it running all the time then you're just not hearing it turn off or your machine isn't even getting cold enough.  Put a thermometer in it and if the temp isn't anywhere between 35-42 degrees then the cooling system is probably low on freon.  Is the evaporator icing up at all?

Posted

I checked the machine today and the refrigerant pipes are covered with dripping ice, but the heat exchangers are warm with air blowing through. And the cans are warm. Could there be something plugging up the coolant lines?

-jim lee

Posted

Either your evaporator is totally frozen so no air cools the cans, you are low on freon or you have bad valves in the compressor.  Have a certified vending refrigeration tech check it out for you.

Posted

I don't know what you mean by heat exchangers.  HVAC is not my field of expertise at all and my knowledge of refrigeration is limited exclusively to what I have learned from vending machines.

If you have dripping ice, then there's a very likely chance that you are low on refrigerant.  That could be the only problem as the ice has grown over the evaporator but there isn't enough refrigerant in the lines to cool the rest of the machine.

Judging by how you referring to something as a heat exchanger, I get the impression that this is not a job you can fix yourself.  You need to get someone to diagnose it and fix it like AZVendor recommended.

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