Bunn GR - Recent Questions, Troubleshooting & Support - Page 6

Bunn, DUAL brewers are large volume (1-1/2 gal per thermal Dispencer.) In most commercial VAN operations there is a requirement to cook and assemble food in a sanitary food approved kitchen or process plant. Brewing would be done at the kitchen. To use this type of brewer would be to get enough 1-1/2 gal servers to cover your needs for the event. Brew everything you need in the morning and just take the servers to the event. I remember waking up at 4 AM to brew 25 servers for big events. We even did a mid morning run with another 15 servers. You can also install low wattage warmers designed for the servers. I suggest two warmers to keep regular and de-cafe hot. The rest can be set aside. Some servers will stay hot enough for up to 4 hours. * Installing the brewer in the van has problems with keeping the water level. You will need a "Boat kit" to allow for sloshing water. You also need a pressurized water tap. Power is rated at 220-240 30 amps. (40 amps if your at 200VAC) * Check with your local coffee vendor for advice. Aloha, ukeboy57

need to check and test element

probably a broken hose

Usually the green light is on when it's ready to bru

Are you sure the water passage is no plugged? Lime will build up and actually close it off .

Depends on your model. The smaller pour over units are easy as you prep your funnel with coffee as normal and get a full pot of hot water (just brew the water through the brew head and funnel to fill the pot.) If you have another pot or carafe, air pump pot. Then hold the coffee filled funnel (with coffee filter) over the empty pot and slowly pour the hot water over the coffee grounds. Go slow as you don't want to burn your other hand nor get grounds into the pot if you over fill the filter. * If this is a 1-1/2 gallon brewer then the missing shower head won't mater that much as most of the 'flavor' is extracted in the first 1/2 gallon with the rest just filling the urn. If you do find the coffee to be weak then perform 3 separate 1/2 gallon brews to allow the grounds to fully soak and extract. Again, you can still do it manually as described above but it does get messy and very slow. (I've done this just to get something out to the customer. Well until I could get the repaired brewer up and running.) * Most of the Bunn decanter brewers use a quarter size screw on spray head. No real substitute, though you could try a stiff sheet of aluminum foil to cover the coffee grounds in the funnel and poke holes into it. Though more than likely one of the waiters will dump it on the next brew. * On one occasion (during lunch rush) I had to wait on a repaired urn to heat up but the waiter's needed coffee now! I took a pour over small brewer and made a pot with 1/2 gallon strength coffee and poured it into a larger urn then brewed more 'partial' batches till it was full. Hey, got to do what needed to get it out. * You should always check with your coffee vendor as spray heads are very common parts and available at your local restaurant supply. There are other brands that use the same parts too like bloomfield. Ask around as this is a fairly cheap part. Aloha, ukeboy57

It may not be getting hot enough you have to have it at the correct brewing temp..

here is the manual i found. Hope this helps it talks about deep cleaning the coffee maker. http://www.bunn.com/sites/default/files/care-and-cleaning/43097_0003e_nhs_manual_11_14_web.pdf If you need further help, I’m available over the phone at https://www.6ya.com/expert/daniel_a4640839dbb7ec58

yes sure isworking

Too much pressure makes the poor seal around the spray head leak. It happened to me, too. Call Bunn. They sent me a new one free of charge. Plus, you have to use purified water and clean it regularly to prevent buildup like calcium from causing similar issues (I use a gravity water purifier, but it doesn't remove natural minerals). I've had mine a year and that was the only problem. Much better than the multitude of Keurigs I had before. The awful difficulty opening the drawer will subside with use. And, they stand behind the machine in full for the 2 year warranty, meaning they'll replace the whole thing free if something happens

The noise can occur when there is a heavy buildup of calcium on the heater coil. This causes the coil to get much hotter since the layer of calcium acts as an insulator and the water may come to a boil because the coil rises to a high temperature trying to heat the water.
Unless it is too clogged, this may help; empty the water out completely, then put two cups of regular vinegar in the water chamber and turn on the power for a half-minute or until liquid appears in the pot.
Let it sit overnight and then let the remaining vinegar pump through. You will have to run several pots of water through the machine or have some really strange-tasting coffee.
There are commercial products that act more quickly and thoroughly than vinegar but also much more caustic.

You should call your vendor for service. Especially if it's on loan from them. *** The following is for information only. Equipment should be serviced by a qualified tech. *** VPS are pour over brewers. Like the 12 cup brewers you find at home, they need to be filled with 12 cups of water (a full pot), heated and then peculated over the coffee grounds and collected in a decanter. BUT there is one main difference! The VPR and similar COMMERCIAL coffee machines are quick brewers. They usually have a pre-heated pot of water stored inside the machine. * VPR's and similar machines REQUIRE a pre-fill and heating period prior to brewing. This means it's sitting on a level table and filled with water until water sprays from the brew head. At this point the unit is plugged in and the heater powers up. Brewer will pre-heat the water (there may be some water discharge from brew head as the water expands). Ready light will come on in about 15 mins. * To Brew; Place coffee grounds in filter, place in funnel and brew head, clean empty decanter under funnel, slowly pour one full decanter of water (cold or hot) into brew tray. Do not overflow tray. Allow water level to sink before adding more water. Only fill with one pot as an equal amount will come out the brew head and funnel. * FYI Coffee grounds are usually in pre-messured packets for office use. A simple guide is one tablespoon per cup. (level or heaping spoon is up to you) * Since your brewer was bubbling at one point. I'm guessing it had water in the pre-heater at one time. But if it's not in use and left plugged in all that time then the water has probably boiled off. Hopefully someone unplugged the brewer prior to the unit blowing the thermal fuse. * You can test the VPR by following the Pre-fill instructions I've listed earlier. If the brewer heats up and does not continuously boil (shorted condition) then try a brew. If it works then your okay. Otherwise the unit will need service for a blown high limit or bad heater element. * Call your coffee vendor anyway. Many coffee vendors will service your brewer of even replace it as long as you buy coffee from them. Ask around. * check bunn.com for free download of VPR manual Aloha, ukeboy57

You should call your vendor for service. Especially if this equip is on loan from them. *** the following is for information only. All service should be done by a qualified tech.*** * CWTF have an on/off heater switch in the back of the brewer plate. Make sure this is on as it provides power to both heater and heater blanket. * There is a schematic on the back, side, or top panel. You will need a continuity meter to check the following: * There is a thermo fuse in series with the heater element. check and replace if open. * There may be a 2nd High limit fuse (disk shape) or another thermo fuse on the top of the tank. usually zip tied to the water faucet lines. check and replace if open. * There is a thermostat (adjustable) in series with the element that may be open, shorted, or out of adjustment/calibration. Replace as needed. * The element could be open or shorted to ground (ripped casing exposed electrical wires to water and grounding to tank housing). Replace element (and gaskets while your at it) * I suggest getting a repair kit with all the gaskets as they are probably burnt or cracked from age. Aloha, ukeboy57

You should call your vendor for service. *** the following is for information only *** * Lime build up is caused by heated water standing and cooling off or drying out as it stands. * Daily wipe down of equipment and removal of standing water puddles help minimize this build up. * washing pots daily will remove coffee stains and prevent build up. * Do not allow pots with coffee or water to sit overnite on warmer plate. * Internal lime requires a qualified tech to disassemble equip to service. * check bunn.com for free download of manual and cleaning instructions. Aloha, ukeboy57