Introduction
After a long period of use, the Keurig coffee maker will begin to deliver lukewarm coffee. Eventually this will be followed by delivery of cups only half full or lower. A clogged delivery system is the usual culprit and can be easily repaired.
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The first step is to cycle white distilled vinegar through the system several times. This will dissolve accumulated mineral deposits.
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If this doesn't resolve the problem try probing the delivery port(just above where the coffee capsule is placed) with a pointed probe such as a dental probe. After that blast the port with canned compressed air. This should clear the delivery port.
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Afterward run several cycles of filtered water through the system to clear out the debris and the vinegar aroma.
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Enjoy good coffee again.
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