Question about Bunn CWTF Coffee Makers & Espresso Machines

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Have a Bunn CWTF, when the switch is pushed and water begins to flow thru the basket, there is a small amount of water that begins to puddle on top of the left tank (right does it also, but less).

Replaced the tank inlet gasket and made sure the syphon tube is free. No debris was emitted from the syphon tube. The silicon tube was in place on the syphon tube and still very flexible. Still leaks. I noticed the thermostat gasket was very easy to remove. Is it suppose to be very snug? Could the gasket shrink? The maker is over 13 years old and just started this leak. We did move the maker 2 years ago, I just put a level on the counter, the bubble is between the lines, but not in the very center. It is indicating the maker is very slightly higher in the front.

Posted by Keith Thomas on

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1 Answer

Mark Cheong

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  • Bunn Master
  • 791 Answers

Leaking from top of tank; Call for service as this is an electrical hazard.
*** the following is for information only. ***
* Replace any worn gaskets and silicone tubes.
* There may be cracks in the metal pipes. Hard to see, but there, if you remove the lime deposits.
* check the top tray nut if the gasket to the tank is missing. It's about an 1-1/4" round washer with about a 3/4" hole. Usually made of white silicone rubber. It seals the fill tray to the tank. Leaks often.
* Bunn equipment can last quite a few years (decades?) but the gaskets do get hard and the tank needs to be water tight to work properly. Since this is already an old brewer and you've saved money rebuilding it. Suggest going further by replacing all gaskets. Yes they do need to be snug with no cracks.
Aloha, ukeboy57

Posted on Jan 20, 2018

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5 Related Answers

MNTECH

Carl Schulzetenberg

  • 1543 Answers

SOURCE: Water leaking from freezer

Check for a blocked defrost drain. Take the panel off at the back of the freezer section and find the small hole at the very bottom center below the cooling coils. Use hot (but not boiling) water and a turkey baster to flush it out until water runs through it. (it will go into the defrost drain pan, where it will evaporate)
This will prevent water from comming out the freezer door and leaking onto your floor and running down your copper pipe to the basement.

Posted on May 12, 2009

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Anonymous

  • 4 Answers

SOURCE: my 10 cup Bunn coffee maker leaks from the top

I have the same problem and I took the coffee maker apart to find out why. It has to do with a leak on a fitting. On mine I found that the fitting where the hole in the black plastic that the water flows through to get into the stainless steel tank needed to be repaired with some silicone sealant to fix the leak. Still making some coffee!

Posted on Oct 15, 2009

Anonymous

  • 1 Answer

SOURCE: Leaks water in the counter.

I fixed mine for 25p... you need to take the back off, and the tank holder out (2 screws each). There is a very thin pipe that comes out the pump - that is the leak.
Unclip the little clip and pull out the pipe and fish out the black o-ring out the hole.
Buy a new o-ring and put back together... no leaks =)

Posted on Nov 15, 2009

Anonymous

  • 14 Answers

SOURCE: leaking coolant from a small hole located in the

water pump failure, water pump on these run off the timing chain and the timing chain runs in oil, so they could not just put a weep hole on the pump because it would go strait to the oil pan, instead they redirected the coolant from the leaking pump to just below the thermostat housing. And good luck, it's at least a 6 hour job on these. Brandon-MO

Posted on Jan 21, 2010

atbsmmom

  • 189 Answers

SOURCE: Bunn coffee maker leaking from underneath the bottom

Please get the model and the date code from the bottom of the machine and contact customer serivce. Depending on the date code, there might be a seal kit available or the machine can be replaced at no cost if 3 years old or less. If it is over 3 years old and the seal kit isn't available, the machine will be replaced at a reduced price.

Posted on May 19, 2010

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Your problems sounds like an undersized (Non Bunn) filter, or clogged brew basket. To verify this, try pouring in only half the water for your brew cycle and wait for it to finish dripping, then pour in the rest. If no overflow has occurred, you simply have the wrong type of filter. If overflow begins again, you have a clogged brew basket, since no Bunn can flow too fast for the brew basket to keep up with it.

This is because Bunn filters are manufactured differently than generic store bought paper filters. They will flow faster, brew cleaner and stand up better than normal generic filters.
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They made the first, best paper filters for drip coffee pots, and all others are just generic dioxin gas producing paper.

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