Question about Bunn VPR Coffee Maker

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I inherited a Bunn VPR and the water tank sounds like it has rock deposits rattling around in it (probably scale deposits). I believe it's going to need removing the tank and emptying out the contents. What do you suggest?

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It may just be the sound of the water heating up. A lot of times when the heater element first comes on, it makes crackling or popping noises inside the tank. If you want to look into the tank, its fairly easy to get into it. Take the four screws off the top, You can lay the top off to the side carefully without disconnection the top element. Or carefully unplug the two wires connected to the top element. If you are not very careful, you will break the connectors loose, and its almost impossible to repair the connector. You will see a flat tank made of plastic with about a 1 inch nut with a hole in the middle. Take the nut off and the washer under it. Be sure to put it back in the same order it came out. You will see the top of the tank. There are two rubber bushings with cap tubes sticking out of them. Pry these two rubber bushings loose and carefully pull the cap tubes up and out of the tank. You are now able to look into the tank. If it has a lot of scale in it you can put vinegar in it and let it sit for an hour, turn the whole coffee maker upside down and pour it out rinse it several times and put it all back together. My suggestion would be to leave it alone and descale it by putting vinegar into the tank through like a pot of water and let it sit for an hour and then flush it until it no longer smells like vinegar. My gut feeling is that it is the sound of the element heating up normally.

Posted on Oct 11, 2010


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The way your machine works is that there is a holding tank for the water and it isn't actually brewing with the water you just poured in, it is using the holding tank water. If the holding tank gets low, and you pour water in all it does is fill the tank but nothing will come out.

Hope this helps.

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