Question about Keurig B100 Coffee Maker
It was great having the picture of the side. But before I disconnect the check valve, I want to make sure I have it properly identified. Is the check valve the clear white assembly that is located below the bent tube out of the tank unit and above the bent tube going into the white/silver cylinder ?
Do I let the pump run the full "cup" cycle before turning it off, to get all the water out of it or just a few seconds?
Being a semi-fixit girl, I just like to make sure BEFORE I dismantle the wrong part. Sorry guys for a probably a "stupid" question.
My picture had arrows with labels indicating the location of the pump and the check valve, but they disappeared when I posted it. Anyway, It sounds like you have located the check valve that causes most of the brewing problems. The valve is white and semi-transparent with a spring in the middle. When this valve fails, water flows from the tanks and down into the air pump (white/silver cylinder) which disables the pump.
I have repaired three of these now, and two needed new check valves, but only one just needed to be cleaned. I found the valves on ebay for $7.00 (try seller; "Dartbikes"). if you do need to replace the valve, make sure that you purchase a high heat (275+ deg F)rated 1/4" to 1/4" check valve. The new valve will not be identical to the original, so will be adding the valve under the original. This should fix your problem... however, one of the units I fixed had a frozen pump which was caused by the water that got into it. I was able to open the pump and free the frozen parts with silicone, then it worked fine again.
As for your second question, no you don't need to run a cycle or drain it before opening the unit. However, you should unplug the machine to prevent getting shocked. Though, you may need to power in on a few times while it's open to test it. So if you do, don't touch any terminals or exposed wires.
Good luck and let me know if you still have questions, Erik
Posted on Feb 23, 2008
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Posted on Jan 02, 2017
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