How to check and replace thermostat on oasis drinking fountain

Either the draining gasket or the cooling tank or the push in filterings could be not working and should have to be replaced in the water drinking fountain.looking for where the leak is coming from for the water drinking fountain then and get the parts or the part that is having water leaking from replaced.

When drinking fountains were first created they used to shoot "water one inch straight into the air, creating a bubbling texture, and the excess water" used to run "back down over the sides of the nozzle" (wikipedia) This was definitely an easy way to convey deseases. However, after a while, the production of drinking fountains started adopting an arc projection, which made it easier for the person to drink and made it more sanitary. Nowdays the jet of water goes as far as four inches in order to avoid infections and bacterial transmission.

bad thermastat. check it for continuity.

Ain't no fuse. I would first check the thermostat for continuity. If you don't have a meter simply bypass the thermostat for a few minutes to see if the fountains cools but DO NOT LEAVE IT LIKE THAT. Water fountains recover cold water quickly, if left like that the tank would freeze and bust so don't bypass the stat and go shopping. If that turns out to be fine then check the compressor relay. The relays do a lot of work if that fountain is anywhere near a school or an office. The condenser gets an awful lot of dust in it especially if the unit is outdoors. Down south where I live we do put some water fountains outside. Give it a good cleaning. Replace the open component and you should be good to go. A compressor failure or gas leak is RARE on water fountains. I suspect your compressor relay is shot:

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On our Elkay drinking fountain there is a set screw underneath that you can turn to adjust the flow rate. I have detailed how to adjust the flow along with how to replace the solenoid on my blog at: http://johnfixesstuff.blogspot.com/2014/10/how-to-fix-elkay-model-ezfs81b-replace-solenoid-35981c.html John Fixes Stuff How To Fix an Elkay Model EZFS8 1B Drinking Fountain...

Oasis water Fountain keeps freezing up

Pull the water jug and open the top of the unit. Look for frozen water. May need repaired or adjusted to keep water from freezing.

The fan and compressor run at the same time.
Both get power from the on/off cold control termostat.
1.Defective thermostat.
2.Compressor not cooling.

If the water is chilling go to #1.