bullyfrog Posted August 24, 2018 Share Posted August 24, 2018 Like the title says, I've got an old single priced DN 501E on site that's giving me hell. I've swapped 3 cooling decks with each one lasting about a week. I thought I was just having bad luck and grabbing bad decks or something, but on the last one I pulled it from a working machine and it did the same thing to it. I tested the outlet and am getting a firm 120 from there. So, where do I look next. Power supply? What else is there on these old machines that could be burning up the decks like this so quick? Link to comment Share on other sites More sharing options...
lacanteen Posted August 24, 2018 Share Posted August 24, 2018 How did you check your outlet? If you look at the typical outlet, 2 vertical slots, with 1 ground. For illustrative purposes, the ground is "down", the 2 slots "up". Volt meter, on AC volts. Black lead on ground, red lead on right slot should read 117VAC +/- 7 volts. Then, black lead on ground, red lead on left slot should read less than 1 volt. Link to comment Share on other sites More sharing options...
bullyfrog Posted August 24, 2018 Author Share Posted August 24, 2018 Just like you posted above. Was getting 120+/-. Link to comment Share on other sites More sharing options...
AZVendor Posted August 24, 2018 Share Posted August 24, 2018 120 is fine but they may be getting much higher or even much lower (brown outs). I found a machine once where the service in to the old tire shop was 130+ volts and I found that as I tried to figure out why they kept losing validators and mechs in the single price machine. Had to have the utility fix the issue. If there is heavy electric usage in your account then you could have brown outs. Link to comment Share on other sites More sharing options...
lacanteen Posted August 24, 2018 Share Posted August 24, 2018 More importantly, less than 1 VAC on the neutral side. If so, make sure evap motor inside cabinet is working, no damage anywhere on the power cord both before and after the power distribution box. Make sure the power source is a working breaker under 30 amps. Is any part of the door getting wet? Is moisture draining out of the cabinet properly? Check your voltage when the compressor starts, it might be dipping under 100VAC Link to comment Share on other sites More sharing options...
bullyfrog Posted August 24, 2018 Author Share Posted August 24, 2018 I appreciate all the tips. This machine has been at this location for years with no issue though. I know it's still possible but I don't think it's the location. Link to comment Share on other sites More sharing options...
Central Kentucky Vending Posted August 24, 2018 Share Posted August 24, 2018 i had a location was ok for years then coming in was130plus Link to comment Share on other sites More sharing options...
Corvus Corax Posted August 24, 2018 Share Posted August 24, 2018 You can throw a voltage regulator on it. Link to comment Share on other sites More sharing options...
orsd Posted August 25, 2018 Share Posted August 25, 2018 Sometimes a floating neutral situation will occur. What will happen is that depending on load the voltage will change dramatically. Also since they are so friggin cheap compared to decks I would just swap the main harness and thermostat. Link to comment Share on other sites More sharing options...
rollingtach Posted August 26, 2018 Share Posted August 26, 2018 Possibly one of the feed wires is breaking down or bad connection somewhere and can't supply the amount of current required by the compressor for a clean start. Voltage will look find when tested under such a condition. Link to comment Share on other sites More sharing options...
Recommended Posts
Archived
This topic is now archived and is closed to further replies.