I have a commerical Bunn coffee maker. I ran vinegar to clean it out. It dripped very slow. Now, I get a 6 minute pot, the coffee is 180 degrees, but the coffee is very weak! What is up?

To clean the vpr you will need to take the lid off the machine. Be sure to unplug while doing this. First clean the water tray. You can unscrew the nut holding this tray and clean the tray in your sink. Put the tray back in and put the lid back on. Plug coffee maker in. Fill one coffee pot with vinegar and pour it in machine. After the water finishes coming out let the coffee maker sit overnight. Before you start filling the maker with water at least 6 times, be sure to clean the spray head. Make sure the 5 or 6 holes are free and clear of any build up. Then start with fresh water. Fill the coffee pot with fresh clean water and pour into machine. Let it finish and do this at least 6 times. If you can still taste or smell the vinegar repeat until you cant.

Believe it or not I had a customer once that left 6 pounds of butter on top of one of our brewers. They had it cleaned up on the outside so it took me a while to figure out what had happened but I could taste the rancid oils.
We ran about 20 pots of just water through it... make sure you let it heat back up before each one. I think the only thing vinegar might help with would be lime/calcium build up so I wouldn't think it helps this particular situation.
Good luck!

mcdevito75 here, Contact Bunn for their recommended cleaning material for your coffee maker, or see any large store that carries coffee makers for their cleaning kits.

With the machine full of water and still turned on, pour in 1 qt of white vinegar into the top and place decanter on base and close the lid. You will let this sit in the machine for 2 hours. At the end of 2 hours, flush out the vinegar with 8-10 decanters of water.

The metal proble is use to clean out the water tubing. Remove your sprayhead and insert the metal rod up in the hole leaving out about 1-2 inches. Then simply twist and turn the rod about 5-6 times. This will remove any lime deposits. Then flush out with 2-3 decanters of water. You can obtain a new manual by calling customer service or going to the website-www.bunn.com going to @home, then products-click on your brewer-and then select use and care manual and you can print it out or view it online.

Your spray head has 5 to 6 little holes depending on the model and year, and it looks like you have scale, calcium or lime blocking them.
Since your model is a VPR pour model, you will have less trouble cleaning it with white vinegar than the permanent water connection type. I use a gallon of vinegar and filters for this.

Parts needed:
2 Clean, Rinsed Empty coffee cans
1 Gallon of White vinegar
5 coffee filters
1 Toothbrush, preferrably angled head

Start with your Bunn turned off and place an empty full size coffee can under the pour spout. Now place a filter in the brew basket to catch any fine particles you don't want poured back in the resevoir and heater. You will need to change this filter a few times as the trash starts coming out of your spout.

With the coffee can, brew basket, and a fresh empty filter in place you want to start pouring the vinegar in the tank while catching the water with the coffee can. As it fills with water you will need to dump the can down the drain until the full gallon of vinegar has been poured in the Bunn. Allow the excess water to finish flowing out into the coffee can making sure to leave half the water in the can to pour back into the coffee maker.

By now your tank should be filled with mostly white vinegar, and your coffee can should be at least half full of vinegar as well.
Now you can turn on the lower pot warmer to keep the solution hot and plug your Bunn into the outlet.

Allow 8 to 10 minutes for the heater to heat up and pour the half full coffee can of vinegar into the fill area. Allow the cycle to complete and replace the filter as needed, or if flow begins to slow down.
If your heads are clogged, use the toothbrush to clear the holes as the vinegar is flowing until you see all holes flowing vinegar.

Chunks of trash will dislodge in your heater tank and flow to your spray head, so keep that toothbrush ready.

Do this at least 5 times, then allow the Coffee maker to sit 30 minutes with the heater on to finish dissolving the lime and calcium deposits in the tank.

After 30 minutes start flushing the system with clean water to rinse out all of the vinegar, or until you can no longer smell vinegar in the coffee can.

Good Luck!

Did you let the vinegar mix with the hot water in the tank for 2 hours? If this didn't fix the problem, please call 800-352-2866 with the model and date code and we will be happy to assist you with this problem.

Start cleaning process with vinegar, several times.

get out the spring that came with it and ramrod the tube
un screw the shower head and clean that first the ram out the tube then reolace the head
this pot is not heat sensative when brewing coffee, like most of the other types
also pour in a quart of white vinegar, followed by 4 or 5 pots of water

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.