Hello I have an Mr. Coffee CGX23 12 pot coffee maker. The water in the reservoir is barely able to pull up and brew. Water is hot and steam is building, Water not pumping up to brew.

Its pretty easy to open the top and fill the reservoir with water up to the level needed (i.e. 4 cups). Then press the ON button to start the brewing process. Make sure you fill the filter with ground coffee.

See the following link:

Mr Coffee Coffemaker

No. This coffeemaker is not built to be serviceable in that regard.

You can wipe down the inner-sides of the reservoir for a slightly better maintenance cleaning. But, 4 cups of pure white vinegar (no water added) in the hour-long cleaning cycle followed by two pots of fresh water in the brewing cycle is really the best way to clean the rest of the inner-parts which contact the liquids.

If your real purpose for your question is how to resolve the elongated brewing times, I'm afraid that is a symptom of damage to the heating element. This too is not serviceable.

The heating element will naturally degrade over time. But, it can incur sudden damage when the reservoir is refilled with water too soon - while the element is still hot. Because of the simple design, if the coffeemaker is one, then both the warming plate's heating element and the reservoir's heating element are on. So, after a brewing cycle is complete, the reservoir's heating element stays on. Without any in the reservoir to keep it cool, the heating element superheats. So, if water is put in the reservoir while the coffeemaker is on or before the element has adequately cooled, the sudden burst of steam from the water contacting the element can be quite violent.

You can get a faster brew cycle by putting warm water into the reservoir and making coffee right away. But, depending on your hot water supply, the coffee may not taste quite as good.

Your pour over coffee brewer has a reservoir that holds more than a pot of water. First thing you need to do is turn off the machine. Then put the empty coffee pot on the burner. Then take another container and fill it with fresh cold water and pour it slowly into the coffee maker until it starts to come out into the coffee pot. Stop pouring in water.

Now turn the machine on and let it heat up. Now you can brew normally. The reservoir has to be filled before you turn it on or you will end up eventually burning up the heating element.

Hi,
Below are solutions for a leaking coffee maker and how to decalcify the machine?
Tools and Materials needed to fix this problem are as:
* White Vinegar * Fresh Water * Volt-ohm Meter * Screwdriver
Step 1 - Clean
If your coffee maker seems to be clogged, try cleaning it with a mixture of white vinegar and water. Assuming that your coffee maker has a 12 cup capacity you will want to use 11 cups of vinegar and 1 cup of water. Fill the coffee pot to the 11 cup mark with vinegar and then fill it to the 12 cup mark with water.
Pour this mixture into the reservoir and turn on the coffee maker, allowing it to run through a brewing cycle as if you were making a pot of coffee. By doing this you will dissolve any build up in your coffee maker. If the coffee maker is leaking because the pump is clogged, then this might clear the clog and stop the leaking. If it has been a while since you last cleaned your coffee maker, you may need to run the vinegar through more than one cleaning cycle to dissolve all of the buildup.
Step 2 - Pump Valve
Unplug the coffee maker and examine the pump valve. If the pump valve is broken or has a clog, then the water will not be able to rise up and flow through the fill tube. When the coffee maker is turned on, the water needs to go someplace. If it cannot flow through the fill tube, then it may leak onto the countertop. If the pump in your coffee maker is sealed, you will need to replace the whole pump. If the pump is not sealed you should check it to ensure it is not clogged with coffee grounds or mineral deposits.
Step 3 - Brew Switch
Examine the brewing switch to ensure that is working. To get to the brewing switch, remove the base plate. Next, you will need to test the switch with your volt-ohm meter. Touch the tester to the RX1 scale. If it reads 0 ohms then you will know that the switch works fine. If it gives you a number other than 0 then it is time to replace the switch.
Step 4 - Tube Connectors
If the coffee maker is leaking or sputtering then you should take a look at the tube connectors. Many times, a leaky coffee maker is caused by faulty tube connectors. If you find the leak is in an elbow, clean the surfaces before you replace it. If the tube connector leaks, replace both the tube and the elbow so that you can be sure the pieces will both fit together properly.
To decalcify, you will be needing a : decalcifying cleaner and A container large enough to hold the same quantity of liquid as your water reservoir
1) Remove the machine's water reservoir. 2) Empty all liquid from the reservoir. 3) Fill the reservoir with warm water. 4) Add one packet of the recommended cleaner to the full reservoir and stir until the cleaner is dissolved. 5) Return the water reservoir to the machine. 6) Turn the machine on. 7) Set the large container underneath the steam wand. 8) Set up your machine so that hot water -NOT steam-will be emitted from the steam wand when the steam valve is opened. 9) Open the steam valve according to the manufacturer's instructions. 10) After all of the decalcifying solution has drained into the large container (within a few minutes this will occur), remove it and discard the liquid that has been collected. 11) Rinse the water reservoir thoroughly and then fill it with the type of water you usually use for brewing. 12) Return the water reservoir to its normal position. 13) Using only water repeat steps 7 through 9 until the water reservoir is empty again.
I hope the above helps....
Good luck.

Find your manual and follow cleaning procedures.

This brewer has a 2 1/2 pot reservoir. You should NOT plug in the brewer before the reservoir has been topped off. Pour 3 pots (one at a time, every minute or so) through the screen with a pot under the filter basket. Wait until the water flows from the basket and only then is it safe to plug in the brewer. The reservoir holds HOT water until you are ready to brew and then, by pouring in a pot of cold water, you will be able to brew.

3 beeps means plugged water line. Take off the bottom of the coffee maker with a small phillips head screwdriver. Use pliers (I used needle nose type) to remove the wire clamps holding on the silicone water tubes to the hot plate. In my case, the water line from the reservoir to the plate was clogged with something I couldn't see until I blew on the hose and it popped out, could have been scale, grounds etc Clean with vinegar. Back in service!

If you ever had coffee ground spill over the top of the basket and into the water reservoir then you may have gotten grounds into the pump valve. That would cause it to pump water slowly or not at all. Before you take the machine apart to clean out the hose and pump try flushing it out. I used a turkey baster full of water and stuck the tip into the hole at the bottom of the reservoir that leads to the pump and heater. Forcefully squeeze the baster which will flush water and hopefully the coffee grounds through the pump and out into the pot.

Hi, My husband found the problem and fixed it. Something had fallen into the water reservoir and was small enough to block the pump. My husband extracted it, now all is well. the Coffee Maker is fine now.
sincerely,
chalice (a.k.a. HolyGrail56)

I had same problem after 4 months. very slow brew time, 10 cups of water poured in made about 6 cups of coffee. I used a packaged coffee pot cleaner powder and this fixed the problem (for now).