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Melanie Schauble Posted on May 24, 2018
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Bun coffee maker model MCU has stopped emptying water completely from the coffee grounds drawer. How can I fix this? We have cleaned filter already. Thank you!

1 Answer

Mark Cheong

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  • Coffee Maker... Master 791 Answers
  • Posted on May 29, 2018
Mark Cheong
Coffee Maker... Master
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Check out the following link that shows how this MCU brewer works. Please note position 8:04 on the time line of the video. Note the loud 'flushing' or air blast sound that is at the end of the brew cycle. If your brewer does not perform this air blast (it forces all the water out of the brew chamber or cup.) then the air pump is bad and needs to be replaced.
* check your warranty and have Bunn service this machine.
* There are no customer service parts inside this brewer.
Aloha, ukeboy57

5 Related Answers

Anonymous

  • 667 Answers
  • Posted on Jan 11, 2008

SOURCE: I forgot to place my coffee filter back in the coffee maker

Just an idea, but you could use a turkey baster to remove some of the water first. I doubt if you've harmed the coffee maker.

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Anonymous

  • 487 Answers
  • Posted on Apr 16, 2008

SOURCE: saeco italia

ok turn the machine on and wait till warmed up. Open door while machine is on and remove the dreg drawer. This you always need to do when the machine is on otherwise it will not reset.
flashing means dreg drawer steady means coffee beans

Anonymous

  • 121 Answers
  • Posted on Feb 16, 2009

SOURCE: Sunbeam 10 cup coffee maker starts and stops brewing spuradically

check water heater

EsWorld

Ernest R

  • 1618 Answers
  • Posted on Jul 02, 2009

SOURCE: Saeco talea touch - grinds & brews coffee into grounds drawer??

Try this, adjust the grind to a coarser setting atleast 2 numbers, then remove brew unit and look behind at white plastic valve, there is a small chamber under valve make sure chamber is clean and that the small discharge from chamber to drain tray is also clear. Then remove shower screen from brew unit and clean if necessary, also check the tube from the shower. Reinsert and test.

Anonymous

  • 5 Answers
  • Posted on Sep 27, 2009

SOURCE: When brewing, it steams and spits the water out

this is what happened to me, I didn't have the filter basket all the way down so the pot lid didn't open the valve that lets coffee flow so the coffee and grounds ran into the water resevior and plugged the filter, so I did the worst thing possible and took the filter out so the grounds got into the check valve that keeps the hot water going in the right direction. that makes it spit and sputter and brew slow.
after trying to flush it out forever I tore the metal plate on the bottom off and unhooked the rubber hoses (don't do this unless you have a needle nose pliers, you'll never get them back on) one should go to the brew head and the other is the water inlet, this has the check valve. you can tell which is which by blowing through them and seeing which one goes to the brew head. if you can blow through the other one the check valve is stuck open, I blew air into it with an air compresor and this forced the check valve shut and now it works fine. I know this is the same symptons as calcium deposits but I had cleaned it twice.
try flushing it with water first but sometimes it takes extreme measures

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Related Questions:

1helpful
1answer

All the water is not going through when I make a cup of coffee. It only makes about l/4 of a cup

Problem:

Keurig B30 would only brew a partial cup and stop. Had to run 3 times to complete brewing.

Solution:

With the coffee maker unplugged and an empty cup in place, I filled the reservoir with filtered water and with a short length of flexible plastic tubing I blew in to the small hole in the bottom of the reservoir. I did this 4 or 5 times sucking some water in to the tube to force it through the system. When I had finished there were a lot of grounds in the cup and the next time I used the coffee maker it worked perfectly.

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I cannot get the drawer to close completely on my Jura E8 in order for the "missing drawer" light to go off. I've unplugged the unit to allow chip to reset... nothing. I think the elevator is...

I have the same machine and this seems to happen if the grounds bin is pulled out before it goes through a full cycle. take both the grounds and water trays out. Try to fit the grounds bin around the "elevator", slide the grounds tray underneath that then the water tray as well. It should slide right in then the machine will complete the cycle and work just fine :)
12helpful
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What is the best way to clean our Bunn coffee maker?

The best way to clean a machine like this out is to actually run a full empty brew of a half water half vinegar solution. This will completely clean out the lines inside the machine and freshen everything up quite a bit. After you run the full empty brew of the solution make sure you run at least 2, maybe 3 full brews of just water on the unit. This will ensure that all vinegar is flushed out of the system, and will help clean it as well. Of course the vinegar won't hurt you if it isn't flushed all the way out, just makes it taste quite funky. But 2 flushes with plain water is almost always enough to completely clean it.

Of course when I say an empty brew, don't put any grounds or coffee filter in the machine, just run the water and vinegar through the machine as if you are brewing a full put of coffee.
Please make sure you rate my answer 4 thumbs up, it is extremely important to me. I would be forever grateful if you could do so. If you need more help on this question please just respond to my answer here and I will get right back to you.


Thanks
Tim
0helpful
1answer

We are having a problem with our bun coffee maker. we have used several different coffee's to rule out that the problem is not the coffee. However it doesnt seem like the problem could be the coffee maker...

What brand of filter ae you using?

Some filters will filter too much and others not enough.

with 1.5 to 2 Oz of coffee in the filter, it should take 4 to 5 minutes to complete a brew of one 64Oz decanter.

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Lights for descale and grounds drawer flashing red

Have you ventilated the machine . turn to hot water and see if can get water out .
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After cleaning/descaling my coffee maker still

If you put water in the basket, does it empty rather quickly? If it does, have you tried putting in a paper filter to help with the spillage?
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Repeats "empty coffee grinds drawer". drawer is empty.

Check the area behind the draw there might be some ground coffee preventing the tray from sitting correctly.
2helpful
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Braun coffee maker starts brewing, then stops after a few seconds

ijustam1

I have the same machine, Braun KF180 12 Cup Coffee Maker. In normal operation the brew cycle is stopped when the water reservoir is empty. The only way the coffee maker knows if that is true is when the water-brewing heater gets too hot. Your brewing heater is probably encrusted with calcium deposits if you have been heavily using the coffee maker. Vinegar will work but it is weak and you will have to cycle this solution through many many times. You should instead use "Lime Away" or "CLR" and let it sit there in a brew cycle or multiple brew cycles for a while. NOTE: Remove the filter when cleaning this way and when the brew cycle is complete, rinse thoroughly -- your taste buds will let you know if the machine is not rinsed thoroughly. -- Good Luck!!
0helpful
1answer

Saeco royal coffe machine

Clean the central unit whenever the coffee bean container is filled, or at least once a week. If the water hose seems dirty it is probably due to hard water and needs to be descaled.
Descaling is done with a special citric acid you can buy in any grocery store or dealer of such machines. follow the directions and run clean water through afterwards.

To clean the filter:
Switch off the machine and open service door
.
Remove grounds coffee container .
Remove central unit, by holding the handle and shortly pressing the PRESS key. Wash the central unit with hot water; do not use any solvent.
Make sure there are no coffee residues on the two steel filters: the upper filter can be removed by unloosening and turning the plastic pin anticlockwise using the tool supplied with your device. Dry thoroughly each central unit component, fit the filter again and tighten it properly with the screw .
Remove coffee rest drawer and clean it, using a non-abrasive solvent. Clean the service area thoroughly and fit the coffee rest drawer again. By holding the central unit by its handle, slide it back into its original position, making sure it is correctly engaged. Then close the door. Fit the coffee grounds container again.

good luck, stephen

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