We can't find the measuring container for our Bunn coffee maker so we've been using one of the carafe's. The first pot of coffee is only half full, then if we had more water, it overflows. How do we get a full pot to brew and not overflow?

Sorry this brewer is usually set up for a full pot brew. I have reset this for a small (but not half) pot brew as the customer wanted to use a metal carafe (with their own logo). I also tried once to get it to half pot brew but it can get tricky if you actually brew twice to get a full pot (in the same pot).
* there is a siphon action that starts once the boiler tank gets filled to a certain point. From that point it will continue to flow until the boiler is emptied to the level that stops the siphon action and leaves enough water in boiler to reheat for the next brew. Achieving the siphon point may be a larger volume of water for 1/2 a pot but may work for 3/4ths a pot. The 1/2 way mark may be affected by the brewers "level" while placed on a table or sagging in the middle of a weak table.
* Usually if you want a smaller brew then go with a smaller brewer. Though there is a hot water tap that will give you 2-4 cups of hot water (it gets tepid after that) which you can use for the "Mug" style brew. But it does get messy.ukeboy57
* Final, If you don't mind a little more than 1/2 pot brews then ask your vendor to adjust the machine for you. Though a reminder NOT the double brew in the same pot as it will overflow.
Aloha, ukeboy57

You will find different brand and budget of coffee brewer for home or commercial use. Many brands like Keurig, Cuisinart, Mr coffee, etc. brought many cool brewers is a cheap price. They have a full collection of home, office and hotel service single k cup coffee makers.

If you will get the model and date code located on the bottom of your brewer and call 800-352-2866, we will be able to assist you with resolving this issue.

Are you using the original Bunn pot (carafe) or a replacement ?

At the bottom of the filter basket, there's a little lever that closes off the coffee flow when you remove the coffee pot. The idea is that you can pour a cup early, before the full pot is brewed, and it won't spill coffee all over the hotplate.

The original coffee pot fits right against this little lever, but if you have a replacement that's not the right size/shape, it won't reach the lever.


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The machine is always on, so it is never full the first time you use it on monday. Try this before you use it on monday pour in a full pot of water in the brewer and put an empty pot under the head. Wait about 7 minutes, the machine will fill the tank and then be ready for brewing coffee.

Is the coffee coming out hot enough? If you measure the coffee as it comes into the carafe, it should register at 175-185 degrees. If it doesn't, then it is a problem with the machine and needs to be replaced. If it is that temperature, then the carafe needs to be replaced. Please contact customer service with the model and date code located on the bottom of the machine. If the machine is 3 years or less it can be replaced at no cost. If over 3 years, it can be replaced at a reduced cost.

If might not be the thermal pot, it is possible it is the machine itself. If you have a candy or meat thermometer, place it in the pot as soon as the coffee has completed brewing. The temperature should be at 175-185 degrees. If it isn't, then the machine needs replaced. If the temperature is correct, then please call customer service with the model and date code to get the thermal carafe replaced. If the temp isn't correct, and it is 3 years old or less, the machine will be replaced for no cost. If it is over 3 years old, it can be replaced at a reduced price.

Is this problem happening by chance after you have used the maker? If so the heat from the previous use may be causing the water to steam from being so hot and thus causing the pot to be only half full. the hotter the maker the more water evaporates. You might need to let it cool down in between pots.

Joe

before plugging in place your empty filter basket in the coffee maker and place a pot under it. Slowly pour in two pots of water using the pour pitcher. Now you can plug it in. it'll take 15 min to heat up first time . when you brew your first pot leave your water level a little short,because the water will expand (only the first time)

Use the de-liming spring to clean the copper tube behind the spray head. Pour several pots of clear white vinegar through the unit to further remove lime and scale from the interior of your coffee maker. My Bunn is 24 years old, and the only replacement parts I've ever required are new carafes and the 4041 silicone washer repair kit.