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Title: Vendo 81 cycles every 5-10 mins Post by: Zach on May 30, 2017, 07:43:11 pm My 81 cycles about every 5-10 mins, is this normal? I feel like my electirical bill will be through the roof here soon. It gets ice cold and thermostat is on the lowest setting. It only runs about a minute or so then shuts off like it should but just seems like that's a lot of cycles. Any ideas?
Title: Re: Vendo 81 cycles every 5-10 mins Post by: Slapshot42 on May 31, 2017, 12:47:15 am Did you use a thermometer to check the "cut in" and "cut out " temps?
You could have a bad thermostat . .. Cut in is usually 33, and Cut out is 38. A compressor will usually cycle 2-3 times in hour but can be dependent on few variables like proper insulation, door seals, gaskets, or how much product is in the machine . Title: Re: Vendo 81 cycles every 5-10 mins Post by: johnieG on May 31, 2017, 09:12:40 am Cut In = the "on" temperature. ( how warm it gets before the compressor turns on.)
Cut Out = the "off" temperature ( how cold it gets before the compressor turns off.) If your thermostat is an air temperature sensing type & accidently is in contact with the evaporators metal housing Or is touching a cold line, it could cause the unit to "short-cycle" as you've described. perature ( how cold it gets before the compressor turns off.) Title: Re: Vendo 81 cycles every 5-10 mins Post by: Zach on May 31, 2017, 09:53:45 am The sensing probe is mounted to the side of the evap, that probably is the problem :darn:
I am using this stat: http://www.ebay.com/itm/Dixie-Narco-soda-vending-machine-thermostat-cold-control-for-refrigeration-Ranco-/192193943559? The machine has all new seals, liner and insulation so I don't think that is the issue. Title: Re: Vendo 81 cycles every 5-10 mins Post by: Slapshot42 on May 31, 2017, 10:36:08 am Cut In = the "on" temperature. ( how warm it gets before the compressor turns on.) Cut Out = the "off" temperature ( how cold it gets before the compressor turns off.) If your thermostat is an air temperature sensing type & accidently is in contact with the evaporators metal housing Or is touching a cold line, it could cause the unit to "short-cycle" as you've described. perature ( how cold it gets before the compressor turns off.) I knew I mixed that around. Terminology aside should of got the idea. Yes, did you use a thermometer which would be the first step... Title: Re: Vendo 81 cycles every 5-10 mins Post by: Slapshot42 on May 31, 2017, 10:39:29 am The sensing probe is mounted to the side of the evap, that probably is the problem :darn: I am using this stat: http://www.ebay.com/itm/Dixie-Narco-soda-vending-machine-thermostat-cold-control-for-refrigeration-Ranco-/192193943559? The machine has all new seals, liner and insulation so I don't think that is the issue. To insure accuracy it's nice to own a $20 thermometer . FunTronics sell them they are a handy tool when setting temps , etc. Title: Re: Vendo 81 cycles every 5-10 mins Post by: Zach on May 31, 2017, 10:43:25 am I think I have one somewhere and if not I'll get one, I figured if the beer was cold then we are all good but apparently not :laugh:
Title: Re: Vendo 81 cycles every 5-10 mins Post by: Zach on May 31, 2017, 10:50:09 am Looking at the back of the stat, what are the two screws for? They look like an adjustment for maybe the cut in and cut out?
Title: Re: Vendo 81 cycles every 5-10 mins Post by: MoonDawg on May 31, 2017, 10:51:08 am Luckily your thermostat has adjustment screws. If you want, you could try adjusting the "cut in" to a warmer temperature.
Title: Re: Vendo 81 cycles every 5-10 mins Post by: Zach on June 01, 2017, 09:16:18 am Unmounted the probe from the condenser and it cycles 3 times an hour! Thanks for the help gents!
Title: Re: Vendo 81 cycles every 5-10 mins Post by: SIGNGUY on June 02, 2017, 04:30:38 pm that's strange though as the thermostat you pictures IS a contact version, not an air sensing version... so I'm thinking the settings are wrong.. but do what works for you.
Title: Re: Vendo 81 cycles every 5-10 mins Post by: Zach on June 05, 2017, 10:48:24 am The screws on the settings are all the way down (coldest setting) so I will adjust them to a warmer setting, thanks for the help!
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