Often the pump gets air in it and does not prime correctly.
It will then only pump a little water. To fix this you may need to get
rough with the machine. Slamming the reservoir onto the machine will
sometimes work, The shake rattle and roll method also will have the
desired affect sometimes. Some have turn the machine upside down over
the sink, have slapped the sides of the machine, or even shake the
machine to get the air out of the lines.
Once you do get the pump to
prime properly, you can keep the pump from getting more air by making
sure to fill the reservoir before it gets empty by using a pitcher to
fill the tank instead of removing it and filling it.
With some K-cups, the bottom needle does not pierce the bottom of the cup
if you simply place the K-cup into the holder and then close the top.
Extra effort may be needed to make sure that the K-cup gets seated
properly so that the water can flow through the K-cup easily. If you
have water still in the K-cup when you remove it after brewing, you are
having this problem.
Also here is some more information that could help as well:Descale the coffee machine.
recommended, but it seems like lemon juice works just as well or even
better. Also there are many different commercially sold products to descale coffee machines
. One of these is a product called CLR
which seems to do a great job. Some people have even used their denture cleaner
to descale the coffee brewer. Dissolve a couple of tablets in water and
place in the reservoir... then run the solution through the coffee machine
to clean it.
common problem is that foil from the K-cup lid will get stuck in the
needle that punctures the top of the K-cup. Like wise the bottom needle
can also get coffee grounds or other debris
stuck inside it. Scale from the descale procedure
can also be a problem. To get the needles clean the best thing to use is a paper clip.
Do not use a toothpick as that can break off inside and cause greater
problems. Bend the paper clip so that approximately 1" is straight. Then
insert the paper clip into the needle and wiggle to clear any debris.
On some brewers the K-cup holder
can also be removed, the bottom
will twist off to reveal a nozzle that also has small holes that will
plug up. Cleaning these holes may be the ticket to a great cup of coffee
again.Check to see if you have water running back into the reservoir when you are brewing a cup of coffee. If you have water bypassing, then you have a problem, there should be no water returning to the reservoir if the brewer is working properly. To stop this from happening there are a few things that you can do.. You can hold your finger over the white tube in the top of the reservoir to place more
pressure on the water to flow through the needle and expel the debris from the tubing.
Take a can of compressed air
like you would use to clean your computer and blow air through the tube(s)
in the reservoir and also the needle(s) to clear dirt
debris and water from the machine. This process may make a mess so be
sure to have the machine is a place where the mess can be cleaned up
easily. Some have even used a large tire type air compressor out of
desperation, and report that it does work. I would use great care with
this method and shoot the air in very short bursts.
Hope this helps......... Mike from fixya.