Tip & How-To about Coffee Makers & Espresso Machines
When coffeemakers make only a few cups of coffee instead of the whole pot, it's usually because the heating element is covered with hard water deposits.
To fix it, you just need to run white vinegar through it. Put white vinegar in the same way you do water (but don't put any coffee grounds in the basket). Run it as many times as it takes to get all the vinegar out, and then run it again three or four times the same way. After it runs normally, run water through it until the vinegar smell is gone.
The cause of the slow brewing is that the water you normally use has some amount of hardness to it, and over time the hard water minerals build up on the heating element inside the machine. The buildup prevents the heating element from heating the water as fast as designed. The vinegar will dissolve the minerals and let the heater work at full capacity again.
If you want to avoid this in the future, just run the white vinegar through it once a month or so even if it's not running slow.
Posted by San Juan... on
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