Question about Bunn NHB Coffee Maker

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Bunn nhs-b leaks how to take top off - Bunn NHB Coffee Maker

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Ours was leaking as well.

Unplug the machine first. The entire top just snaps off in one piece. When you have this off, gently snap out the pivoting arm you are looking at that has a clear silicone cover over the drain to the tank. This needs to be cleaned along with the top resevour. Remove the brew basket (where you place the filter). Tip the unit upside down and drain the water. Unscrew the spray nozzle. There are two Phillips screws that need to come out. Remove them and then gently pry off the bottom section as well. It pivots from the back.The on/off switch will probably come out of it\'s mounting when you do this so take a good look at how it\'s placed so you can snap it back in when you go to reassemble the unit. The stainless steel band around the top of the unit will probably come off at some point during dis-assembly. This is just for looks so if you don\'t want to bother with the hassle of getting it back in place, don\'t worry about it.

There is a silicone tube that attaches the bottom to the top. Pull this off for cleaning.

Clean everything you see with white vinegar. Do a good job, soaking the tube, flapper, spray nozzle etc. If you saved the package that came with it when you bought the unit, there is a long, thin brush for cleaning the drain tube. If you don\'t have that anymore, pipe cleaners will work but be careful you don\'t poke a hole in the silicone tube.

Leave the pivoting arm off the top of the fill tank and fill everything with white vinegar and let it soak. Dump it out and be amazed at all the crap that comes out. Do this a couple of times until nothing more comes out. Reassemble the entire unit making sure you get the silicone tube securely in place. This is a pain but take your time and do it right or it will leak. Fill everything with water and run it for a few cycles until it is flushed out. About once a month or so, dump out all the water and fill the tank with white vinegar, let it soak and then run a brew cycle with vinegar instead of water. Flush as above.

The siphon, drain tube and spray nozzle get clogged with calcium and this is what causes the leaks.

Posted on Aug 17, 2014

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Posted on Jan 02, 2017

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