Question about DeLonghi Coffee Makers & Espresso Machines
All of a sudden, the amount of water being delivered for coffee has almost doubled. a single cup is delivering approx. 8oz and double coffee is over 12oz. consequently, the coffee is weak. this is a new issue. thanks.
Coffee is too large, decrease larger than the button inside the beans.Turn it to a smaller number.
Posted on Nov 28, 2013
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Posted on Jan 02, 2017
This is a scale issue. All water has minerals wich builds up inside the brewer through time. All you need is white distilled vinegar. Drain the Keurig first and then fill it with the vinegar. After the heat reaches brewing temperature, open and close the drawer to run off a few blanks (3 to 4 cups is plenty). This will prime the vinegar though all the lines. Refill the tank to the top with more vinegar and let the brewer sit (on) over night. The next morning, run off more than half of the vinegar. You should see the cup sizes drastically increase. Within a few cups, you should be getting close to the original 8oz cup. Repeat a few times for good measure. Drain the remaining vinegar, then flush a couple full tanks of good water through it. After all remnants of vinegar is gone, your brewer should work like new.
Posted on Jun 25, 2008
SOURCE: Senseo coffee maker
Having dismantled and inspected several of this "strange machines" my conclusion is the following:
There is an oscillating-piston pump inside with in- and outlet valve.
It is energized by a microprocessor controlled circuit for a working time depending on the button selected (1 or 2 cups). The pressure and flow are nearly constant for a perfect working pump.
The pod holder restricts the thruput by its central hole. (E.g. you get now an extra pod-holder with a very small hole for expresso type)
So if you don't get enough coffee it may be that
1) the duty-cycle (timing) of the pump has changed.(not often occurring) no repair, you have to undergo electronic and programming work
2) the pump lost efficiency (cylinder of the pump clogged, piston not working with complete stroke, spring force fadening or just one of the 2 valves leaking) ca be "repaired" after dismantling machine ,extracting pump and taking it apart, success not garanteed - grinding valves is already time spending
so my principle before starting this work is to run the machine without the coffee pod to check the water output, use a new holder with clean central hole, if this works it will be nr.
3) the central hole of the holder is clogged, may be not by limestone, but dried coffee extract (grease) clean with needle or even better with micro-drill
Posted on Jan 06, 2009
The pic is clogged with coffee or the air bladder is bad. Use the tool on the underside of the tray to clean out pic. If that doesn't work, the bladder will be bad.
Posted on May 14, 2009
Sounds like you need to de-scale the coffee maker. Use white vinegar instead of water, and run it through until the vinegar is gone (no coffee or filter basket). Then use clean cold water to purge all the vinegar by running the water through the system the same way.
If this doesn't work, and you've purchased your coffee maker within the last year, try giving Keurig a call at 866-901-BREW. Explain your problem, and they may be able to help you or offer you some sort of replacement.
Posted on Mar 01, 2011
Here is a tip that I wrote that will give you some things to try that will helpyou get your Keurig coffee brewer workingagain.
Keurig CoffeeBrewer not making a full cup of Coffee
Posted on Mar 21, 2011
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