Question about Keurig B40 Coffee Maker

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My Keurig B40 has three different size cup sizes available, but it dispenses the same amount of water for the medium size cup and the large cup of coffee. It's barely been used so It doesn&am

My Keurig B40 has three different size cup sizes available, but it dispenses the same amount of water for the medium size cup and the large cup of coffee. It's barely been used so It doesn't need descaling or cleaning. How can I adjust the amount of water to be dispensed?

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  • 249 Answers

I realize you think it does not need descaling to to it 'not being used much.'
However you may have hard water and I would think descaling is definitely worth a try. There might be scale built up on the water level probes in you machine.

Descaling Details are listed below:

Brewer Model: Elite B40 ' Classic B44
Special Edition B60 ' Platinum B70

To begin, you will need the following:
• 48 ounces of undiluted white vinegar
• Large ceramic mug (do not use a paper cup)
• Access to an empty sink

PREPARE
Step 1:
Empty the water in the Water Reservoir.

Step 2:
Disable "Auto Off features."

FILL AND CLEAN
Step 1:
Pour approximately 48 ounces of the vinegar into the Water Reservoir.

Step 2:
Place a large mug on the Drip Tray Plate and run a brew cycle.

(DO NOT USE A K-CUP)

Just press the BREW Button. Pour the contents of the large mug into the sink.

Step 3:
Repeat the brew process without a K-Cup until "ADD WATER"
is indicated.

Step 4:
Now let the Brewer stand for at least 4 hours while still on.

Step 5:
Discard any residual vinegar and rinse the Water Reservoir thoroughly.

RINSE
Step 1:
Ensure the Water Reservoir is filled with fresh water.

Step 2:
Place a large mug on the Drip Tray Plate and water brew cycle. Pour the contents of the large mug into the sink.

Step 3:
Repeat brew process until "ADD WATER is indicated.

Step 4:
You may need to perform additional water brew cycles if you notice any residual taste.

Posted on Nov 26, 2014

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Posted on Jan 02, 2017

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  • 9 Answers

SOURCE: My Keurig one-cup coffee maker

There is a post on descaling already but I think the unit just doesn't have enough water in the resevoir. See several of my other posts on how to fill the machine.

Posted on Mar 05, 2009

mcdevito75
  • 1970 Answers

SOURCE: will not made medium cup of coffee. Makes only

mcdevito75 here, Sounds like a defective machine, Hope you had warrantee. Contact Keurig online or phone, thru the owner manual.

Posted on Jun 28, 2010

  • 1 Answer

SOURCE: Our Keurig only dispenses a partial cup of coffee.

Keurig coffee maker dispenses only part of a cup (about 5 ounces) after brewng one cup. Running a second clear cup (w/o K-cup) shows coffee grounds in cup of clear water. the maker will then brew a full cup of coffee. It appears that the top pin is too long and goes into the coffee after it punches through the top of the K-cup. Some of the gorunds appear to get stuck in the top pin.

Posted on Dec 02, 2010

heatman101
  • 43501 Answers

SOURCE: Using a Keurig Platinum coffee machine and water

Hi,

Here is a tip that I wrote that will give you some things to try that will help you get your Keurig coffee brewer working again.

Keurig Coffee Brewer not making a full cup of Coffee


heatman101


';';,./,./

Posted on Feb 26, 2011

heatman101
  • 43501 Answers

SOURCE: My Keurig has three settings

Hi,

Here is a tip that I wrote that will give you some things to try that will help you get your Keurig coffee brewer working again.

Keurig Coffee Brewer not making a full cup of Coffee


heatman101

Posted on Mar 01, 2011

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mcdevito75 here, Sounds like a defective machine, Hope you had warrantee. Contact Keurig online or phone, thru the owner manual.

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