If Bunn unit has been stored for a while, how do i
Hi, W/D here.
To get your Bunn working again, place a filter into the basket, fill the reservoir, and allow it to begin dispensing into the carafe. This will take several pots of water to get it filled and overflowing (dispensing). Plug it in, and let the reservoir heat up. It's not necessary at this point to have the heating plate turned on, but you can do so if desired to check that it is working, then turn it back off. Once you hear the reservoir heating up, pour in 8 ounces of white vinegar, and let the machine dispense into the carafe. Place an additional 8 ounces of white vinegar into the carafe, and pour back into the reservoir. Let the water heat up again, and let the vinegar solution sit in the reservoir for about 30 minutes. Top off the carafe with cool water and allow the carafe to cool with the warming plate turned off. After the 30 minutes, pour the contents of the carafe back into the reservoir, and it will dispense again. The water in the reservoir will heat up again. Check the coffee filter for residue. If you see a lot of grainy material, change the filter, and repeat the cycle until the filter comes out clean. Save your old filters as you go. Lay them out in order on paper towels, and you'll be able to mark your progress. When the filters clear up, discontinue recycling the vinegar solution and, instead, fill the reservoir with fresh water. The sediment has by now been freed up (de-scaled) and will continue to come off in smaller and smaller quantities. Each time you place fresh water in the machine, the dispensed liquid will smell less and less like vinegar. When no vinegar odor can be detected, you are finished.
Best regards, --W/D--