drednour Posted September 27, 2022 Share Posted September 27, 2022 I recently acquired a Dixie Narco 600t from work. The guys at work said the machine worked roughly 6-7 years ago and then it was set aside and forgotten about. I plugged it in at work before I brought it home to make sure it worked. I let it run for approximately 4 hours and everything seemed to work. I loaded up some sodas, they cooled, and they dispensed. I brought the machine home (standing up, never laid down). I plugged it in and let it run for a few hours before checking on it. It was cooling perfectly. So I loaded some sodas into it. Fast forward 2 days, I go out to get a soda and they are warm! When I plug it in, I can hear the fan kick on and the compressor start running, but it just blows warm air. looking for some ideas as to what it may be? Low on refrigerant, bad cooling deck, bad T-stat? Any and all help is greatly appreciated. Please let me know what other info I can provide. Link to comment Share on other sites More sharing options...
drednour Posted September 27, 2022 Author Share Posted September 27, 2022 Link to comment Share on other sites More sharing options...
drednour Posted September 27, 2022 Author Share Posted September 27, 2022 Link to comment Share on other sites More sharing options...
AZVendor Posted September 28, 2022 Share Posted September 28, 2022 If the compressor clicks on and then back off very shortly after, or immediately, you need a new compressor. The thermostat may be installed upside down though it won't affect the compressor failing. Turn it CCW to off and mark that spot. Then it should be set to 3 1/2 from that spot. Link to comment Share on other sites More sharing options...
drednour Posted September 28, 2022 Author Share Posted September 28, 2022 The compressor kicks on and continuously runs. It does not get hot to the touch after running for several hours. Link to comment Share on other sites More sharing options...
AZVendor Posted September 28, 2022 Share Posted September 28, 2022 Then it might be low on freon but you would need a certified vending refrigeration tech to check it. Link to comment Share on other sites More sharing options...
drednour Posted September 28, 2022 Author Share Posted September 28, 2022 Ok thank you. I will go that route first before looking into a new cooling deck. Link to comment Share on other sites More sharing options...
AngryChris Posted September 28, 2022 Share Posted September 28, 2022 14 minutes ago, drednour said: Ok thank you. I will go that route first before looking into a new cooling deck. Around here, I'd get a new deck. Labor rate is insane Link to comment Share on other sites More sharing options...
drednour Posted September 28, 2022 Author Share Posted September 28, 2022 From what I have found, a new deck with run me upwards of $500. Link to comment Share on other sites More sharing options...
AngryChris Posted September 28, 2022 Share Posted September 28, 2022 3 minutes ago, drednour said: From what I have found, a new deck with run me upwards of $500. Yes.. and around here, that's close to what it will cost for me to have someone work on a unit. You might find something cheaper in your area, but that's the rate I pay. Link to comment Share on other sites More sharing options...
drednour Posted September 30, 2022 Author Share Posted September 30, 2022 Would a system still have roughly 30 psi on it with low or no Freon in it? I borrowed an AC test manifold and gauge. When I hooked it up to the fitting, the gauge showed about 30psi. Link to comment Share on other sites More sharing options...
Gizmo Vending Posted September 30, 2022 Share Posted September 30, 2022 If the low side is at 30 psi that’s where it should be. You said that the compressor runs but doesn’t cut off. Are you certain that it’s the compressor running and not the condenser fan? If the compressor is running it will get hot. Link to comment Share on other sites More sharing options...
AZVendor Posted September 30, 2022 Share Posted September 30, 2022 When the compressor and both fans are running properly the low side pressure should be 18 - 20 lbs. If it's much higher then it's overcharged or the compressor has bad valves. Link to comment Share on other sites More sharing options...
drednour Posted September 30, 2022 Author Share Posted September 30, 2022 I’m not sure about the high or low. When I turn the thermostat off, the fan stays running and the compressor turns off (99% sure on this). Then when I tuen the thermostat on, the compressor kicks on (again 99% sure). I left the machine running for about 24 hours. The compressor was warm but not hot. The fan was just blowing room temp air around inside. I have a guy that knows a guy that knows a guy, that knows a guy (haha!!) that has worked on machines before. He has offered to come vacuum it out and recharge it. So I will see what that does. Link to comment Share on other sites More sharing options...
AZVendor Posted September 30, 2022 Share Posted September 30, 2022 The only fan that should always be on is the evap fan inside the cabinet. The thermostat should turn off the compressor and the condenser fan in front of it. Link to comment Share on other sites More sharing options...
drednour Posted September 30, 2022 Author Share Posted September 30, 2022 I will double check on that and report back! Thank you guys for all the help so far. Link to comment Share on other sites More sharing options...
drednour Posted October 9, 2022 Author Share Posted October 9, 2022 Ok so I finally got around to messing with the machine. When I turn the thermostat off, the only fan that runs is the condenser fan. when I turn the thermostat on, the compressor fan comes on but I don’t think the compressor kicks on. I will leave it run for a little while to see if the compressor gets hot or anything. where should I go from here? Link to comment Share on other sites More sharing options...
AngryChris Posted October 9, 2022 Share Posted October 9, 2022 2 hours ago, drednour said: Ok so I finally got around to messing with the machine. When I turn the thermostat off, the only fan that runs is the condenser fan. when I turn the thermostat on, the compressor fan comes on but I don’t think the compressor kicks on. I will leave it run for a little while to see if the compressor gets hot or anything. where should I go from here? Firstly, the fan below (the one you call the "compressor fan") is the condenser fan. The fan(s) above (closest to beverages) is the evaporator fan. The evaporator fan runs all the time as long as it has power. The condenser fan only comes on when the thermostat tells it and the compressor to come on. So if it's running, then the thermostat is telling the compressor to run. If the compressor is not pretty warm/hot to the touch after a while, then you know it's not running. If it's pretty warm or very hot, then it's running. If it has been running but it's warm in the cabinet, then you are either low on refrigerant or you have a restriction. If it won't come on at all or it clicks/flickers every 10-20 seconds or so, then the compressor is bad, but you might be able to give it one last chance with a hard start kit. Replacing the refrigeration system entirely should resolve everything but it will cost you $500+ for a new system. Link to comment Share on other sites More sharing options...
drednour Posted October 9, 2022 Author Share Posted October 9, 2022 Sorry for the wrong terminology. The evaporator fan runs all the time. The condenser fan kicks on when the thermostat is turned on. I had the machine running for about an hour and the compressor was still cool to the touch and did not sound like it was running. Do you have a link or suggestion on which hard start kit to purchase? I would like to try the cheaper options before purchasing a new deck. thank you for all the help so far. Link to comment Share on other sites More sharing options...
cvending Posted October 10, 2022 Share Posted October 10, 2022 You can search this at Amazon. Very easy to install. If this does not start the unit...replace it-- RCO410 3 in 1 Compressor Hard Start Capacitor Kit for Refrigerators & Freezers 1/4-1/3 H.P. 115VAC Link to comment Share on other sites More sharing options...
drednour Posted October 10, 2022 Author Share Posted October 10, 2022 I started looking around the compressor to familiarize myself with it. I opened the cover on the right side and immediately noticed a burnt wire. Could this be the source of my problem? Can I rewire and reconnect that or can this part be replaced? Link to comment Share on other sites More sharing options...
cvending Posted October 10, 2022 Share Posted October 10, 2022 Replace it with the 3-in-kit I referenced above. You will eliminate the old relay and overload. Well worth the $15 cost Link to comment Share on other sites More sharing options...
drednour Posted October 14, 2022 Author Share Posted October 14, 2022 I have the 3n1 kit on order. Should be here on Monday. On another note, we also have a DN 440 (8 selection Pepsi machine) here at the shop that I might start tinkering on too. The wife might kill me though if I bring another one home haha. Link to comment Share on other sites More sharing options...
drednour Posted October 20, 2022 Author Share Posted October 20, 2022 I got the 3n1 kit installed and everything seems to be working ok. I let it run for about 30 minutes and the inside got cool and the compressor seemed to cycle on and off just fine. Thank you everyone for the help. The 440 at the shop has a cooling issue as well. The compressor comes on, gets warm/hot but doesn’t cool. From the previous comments I’m guessing it’s low on refrigerant. Link to comment Share on other sites More sharing options...
AZVendor Posted October 20, 2022 Share Posted October 20, 2022 Probably. Link to comment Share on other sites More sharing options...
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