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Trouble-Shooting => Refrigeration => Topic started by: scalebowler on June 14, 2010, 08:11:02 pm



Title: Thermostat question
Post by: scalebowler on June 14, 2010, 08:11:02 pm
On my machine I had it out in the garage and it was working fine untill for some reason the machine would never shut off. The cans were as cold as they were before but for some reason it would not shut off. I even tried turning the thermostat to the highest setting as far as  it would go and the thing still kept running. I think it was a combination of it being so hot out there and the thermosat may have gone bad. Is there a way to test if the thermostat is bad? Also the door does not seal perfectly and when I opened the machine after a few hours of turning it off there was a ton of water on everything inside.


Title: Re: Thermostat question
Post by: johnieG on June 14, 2010, 09:40:51 pm
Turning a thermostat "higher" means that you've turn it "colder" , turning it "down" means setting it "warmer"
( yeah I know, it's bass-ackwards)

Sounds like it went "south" for the summer  :tounge:, it's probably bad / stuck closed & it's causing the compressor to run 24/7, time for a new one.  if your T-stat' is the contact type ( senses the temperature of the evap' coils & screws to the metal of the evaporator, then you can get an A12-701 or equivalent, Funtronics & sodajerks-works sells them too.

PS: set the T-stat' to mid-range & try rapping the shaft end of the T-stat with a plastic end of a screw driven & see if it's just a little stuck, sometimes this can free up a pair of dirty contacts inside,


Title: Re: Thermostat question
Post by: scalebowler on June 14, 2010, 09:46:02 pm
Turning a thermostat "higher" means that you've turn it "colder" , turning it "down" means setting it "warmer"
( yeah I know, it's bass-ackwards)

Sounds like it went "south" for the summer  :tounge:, it's probably bad / stuck closed & it's causing the compressor to run 24/7, time for a new one.  if your T-stat' is the contact type ( senses the temperature of the evap' coils & screws to the metal of the evaporator, then you can get an A12-701 or equivalent, Funtronics & sodajerks-works sells them too.

PS: set the T-stat' to mid-range & try rapping the shaft end of the T-stat with a plastic end of a screw driven & see if it's just a little stuck, sometimes this can free up a pair of dirty contacts inside,
I get those confused sometimes. If you unhook the thermostat does the compressor shut off? I am going to have the refrigeration system taken out when I fix the rust in the bottom of the machine and was wondering if I could test to see if it is bad or not. I know it is not low on freon because the temperature was fine in there but I think it had to be about 90 or hotter in that garage that night which may have helped keep the cans from freezing up.


Title: Re: Thermostat question
Post by: johnieG on June 14, 2010, 09:52:44 pm
Yes , you can remove one of the terminals from the back of the thermostat & it should turn off the compressor, WARNING & WATCH OUT, there is line voltage across the back of the thermostat & the wires feeding it...unplug the machine before you touch the live-side of the T-stat. & tape the unplugged terminal with electrical tape so it doesn't short out on the machines metal chassis. (or you)  :wow:

PA: regarding your sweating interior, get some sticky-foam door seal form an automotive supply shop & make a better seal around your door before you flood yourself out of you garage.. :smile:


Title: Re: Thermostat question
Post by: scalebowler on June 14, 2010, 09:55:30 pm
should I put the door seal on the door or the cabinent? I really like that idea. Thanks for your help I am going to mess with it soon and will let you know how it goes. Also one other question should I be worried about the humidity messing with my coin mech? I just don't want my new one to go the way of the origional one and start dumping coins or something like that.


Title: Re: Thermostat question
Post by: scalebowler on June 21, 2010, 08:27:19 pm
What type of thermostat do you guys recomend me getting? I saw that there is a contact type and a non  contact type. Not sure which one I should get.


Title: Re: Thermostat question
Post by: collecture on June 21, 2010, 08:42:09 pm
I believe the non-contact type is more reliable.


Title: Re: Thermostat question
Post by: MoonDawg on June 21, 2010, 09:05:48 pm
          Does your existing thermostat's capillary tube make contact with any metal or is it mounted in a position that only cold air blows across it? 
          I usually try and copy the original design.