atw12 Posted September 30, 2011 Share Posted September 30, 2011 I have a soda machine that will not cool the drinks enough, drinks get slightly cool, just not cold, compressor, evaporator fan, condenser fan and thermostat all appear to be working. Ice will build up on the condenser so I assume that means it has enough coolant. If there was no coolant it wouldn't get cold enough to form ice. Not sure where to go next, any help would be greatly appreciated. thanks, Link to comment Share on other sites More sharing options...
dogcow Posted September 30, 2011 Share Posted September 30, 2011 I have a soda machine that will not cool the drinks enough, drinks get slightly cool, just not cold, compressor, evaporator fan, condenser fan and thermostat all appear to be working. Ice will build up on the condenser so I assume that means it has enough coolant. If there was no coolant it wouldn't get cold enough to form ice. Not sure where to go next, any help would be greatly appreciated. thanks, does it ice all the way across or just a bit on the lefthand side? if it doesnt ice all the way across coolant might be low. if its icing up at all that could indicate a bad t-stat or a poor door seal Link to comment Share on other sites More sharing options...
atw12 Posted September 30, 2011 Author Share Posted September 30, 2011 eventually over time it will ice most of the way across. T-stat works, well that is it will turn the system on/off, i have assumed that means it works fully? Link to comment Share on other sites More sharing options...
dogcow Posted September 30, 2011 Share Posted September 30, 2011 im casting my vote for low on gas, but technivend could definitely say better ive been battling these issues recently so i have some familiarity with what can cause it. Make sure the door gets a really good seal and ur delivery door isnt sticking open if its cycling then the thermostat probably works. Link to comment Share on other sites More sharing options...
Technivend Posted September 30, 2011 Share Posted September 30, 2011 Do a search for tissue. You will see a couple of posts about using a tissue to test you refer system. I am leaning towards the system being a little low on gas. The ice on the side (Dixie would be on the right top) means that the refrigerant is probably expanding into a gas before it exits the cap tube. This mean it is getting cold in the wrong spot and it wil kinda refrigerate but not properly. So try the tissue trick and let us know what happened. Link to comment Share on other sites More sharing options...
dogcow Posted October 1, 2011 Share Posted October 1, 2011 Do a search for tissue. You will see a couple of posts about using a tissue to test you refer system. I am leaning towards the system being a little low on gas. The ice on the side (Dixie would be on the right top) means that the refrigerant is probably expanding into a gas before it exits the cap tube. This mean it is getting cold in the wrong spot and it wil kinda refrigerate but not properly. So try the tissue trick and let us know what happened. haha got my left and right mixed up! Link to comment Share on other sites More sharing options...
Technivend Posted October 1, 2011 Share Posted October 1, 2011 Yeah but you got everything else right!!!!! Link to comment Share on other sites More sharing options...
atw12 Posted October 4, 2011 Author Share Posted October 4, 2011 ok, tissue has been stuck to the fins for 4 hours, has not fallen. it is now icing all the way across. the drinks are actually colder than they have been in months. not sure what is going on, should i be concerned that my compressor never stops? thanks, Link to comment Share on other sites More sharing options...
Technivend Posted October 4, 2011 Share Posted October 4, 2011 It really shouldn't take more then two hours to cool down the machine. Four hours seems much to long. It does sound like it may be your refer unit is low on gas but the icing you keep speaking of shouldn't show up to quickly if it is low. Have you checked that the door gaskets are good and the door flap isn't missing? It almost sounds as if you have a major air leak keeping the machine from getting cold and icing over. Is the door closing tight? Link to comment Share on other sites More sharing options...
dogcow Posted October 4, 2011 Share Posted October 4, 2011 ok, tissue has been stuck to the fins for 4 hours, has not fallen. it is now icing all the way across. the drinks are actually colder than they have been in months. not sure what is going on, should i be concerned that my compressor never stops? thanks, swap the thermostat it will cost you ~ 10 bucks also make sure te probe is positioned good if that doesnt work ,get someone out there to fill it up with gas hopefully you have a valve, if the unit is old it may be sealed and you will have to buy a new unit. Link to comment Share on other sites More sharing options...
atw12 Posted October 6, 2011 Author Share Posted October 6, 2011 gaskets all look good which doesn't mean they are, but they really look fairly new despite being an older unit. Door flap is there. Door closes tight and is very solid. I'm going to swap the thermostat and see what happens. it is a closed system, i would rather not put in a piercing valve as that can just lead to leaks later, will replace gaskets and thermostat before replacing the refer system. thanks for all your help. Link to comment Share on other sites More sharing options...
Technivend Posted October 6, 2011 Share Posted October 6, 2011 gaskets all look good which doesn't mean they are, but they really look fairly new despite being an older unit. Door flap is there. Door closes tight and is very solid. I'm going to swap the thermostat and see what happens. it is a closed system, i would rather not put in a piercing valve as that can just lead to leaks later, will replace gaskets and thermostat before replacing the refer system. thanks for all your help. Good decision on not entering the system unless absolutely required Link to comment Share on other sites More sharing options...
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