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Only brewing half of decanter - Bunn Dual SH DBC

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Remove and clean the spray head above the filter basket. If it still under fills, there could be a problem with the dispense solenoid valve.

Posted on Nov 25, 2014

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Posted on Jan 02, 2017

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How long does the heat plate stay on after brewing?


It depends on your brewer. Most will stay on as long as power is applied. IE; the Bunn pour over brewers are always on as these are office machines that always have coffee on around the clock. The only way to turn them off is to unplug them (or on/off switch)
* Check your manual for the options of the main heating plate. Most brands will have a separate switch for each 'side' warmer plate. Turn them on or off as needed. Note; try not to leave a brewed coffee pot on heat longer than 45 mins. Transfer brewed coffee to an 'Air pump" pot or similar thermos decanter.
* Larger brewers (1 gal and up) don't use warmers and directly brew into a decanter. These decanters are replaced with each brew and moved to the serving location. Some of the larger decanters have built in warmers using warmer power stations.
* Most (older) home brewers stay on as long as power is applied or On/off brew switch is on.
* Some of the newer (last 5 years) have auto shut off. But you must check your model and manual if it has this function which may require the customer to set it up for auto shut off option.
* Final, check with your MFR or coffee vendor. Especially if your equipment is on loan from a vendor. Have the vendor check your brewer and maintenance. They should advise you of the proper brewing methods for this brewer.
Aloha, ukeboy57

Mar 12, 2018 | Coffee Makers & Espresso Machines

1 Answer

Our machine is plumbed into the water directly. When we brew a pot of coffee it never brews a full pot. any thoughts on what the problem is?


You should call your vendor for service on any commercial brewer. (Especially if it's on loan from them)
*** the following is for information only as all repairs should be performed by a qualified tech.***

Most commercial (plumb in water line) has a start switch activates the timer (analog or digital) board which turns on the water feed to the brew tank. This forces previously heated water out and sprayed over the ground coffee in the brew funnel. Coffee then drips into the decanter. Under filling is caused by un-calibrated timer or interment timing.
* The timer comes in two types; Dial (old) and Digital. If it's the dial then a simple turn of the dial will make less or more water flow to decanter. You MUST re-brew (no coffee, but use funnel) into the decanter or pot that you plan to use. Don't mix up different size pots as the timer is only good for 1 setting. Turn dial and brew once to check. Keep checking with a brew after each adjustment. Do a final brew just to be sure.
* The digital timer is a bit more complicated to adjust. Sorry, too many switches and options to go into it here. Check your MFR online for a manual (usually a FREE download). Several methods may be listed.
* If it does not adjust or won't keep the set time then. Replace the timer. Digital timers tend to be sensitive to electrical storms. Analog timers have a dial and are more tolerant of electrical surges.
* Check the water fill solenoid. Should be a definite click when activated. Water filling sound should be very clear.
* No water flow then check the water supply line if it's on.
* Final; this brewer needs service. Call your coffee vendor for advice.
Aloha, ukboy57

P.S., Older timers usually are reliable. It may have been set for a larger decanter or pump pot. The pump pots come in 2.5L and 3L for the big boys. Decanters are 10 cup and standard 12 cup. Check your office as there may be an unused pump pot or small decanter in a cupboard that got put away for making "too little" coffee. Try a brew in this smaller pot. Any change in pot size requires an adjustment to the timer. This is the only way to get "Less" or "More" out of the brewer. (Yes, if you have a "Pour Over" function for one time special brews. Check the manual for this option.)

Feb 10, 2018 | Coffee Makers & Espresso Machines

1 Answer

Hello. Bunn coffeemaker VPR Series. When water is poured in coffee starts to make. Carafe gets about 1/3 full and then just drips through filter for about 5 minutes. Never makes full pot.


VPS/VPR 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 is turned on (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.
* Make sure the decanters are all the same size. do not mix a 12 cup pot with a 10 cup pot. One will over fill and the other will under fill. Make sure they match (in cup volume) FYI; Thermo Air pump pots are usually bigger than one pot. Typical filling only to 3/4th of the container. (I think most are in 2.5 to 3 liter sizes)
* If your not getting a full pot then the brewer was partially empty. The second brew (if done within the next hour) should come out full.
* If your still not getting a full pot then the water is leaking or is boiling off. Does it always steam from the top? Thermostat is shorted. Unplug the brewer and call vendor for service.
* Final; If your unplugging when not in use. Then follow the Pre-heat instructions mentioned above prior to plugging the brewer back in. If the tank has been emptied at night or dried up after an idle week. Then there is a chance you may over heat and blow the thermal fuse. Or at best have a half pot short brew as the water dried up.
* Note leaving the brewer plugged in without brewing daily is not a good idea. The water evaporates and eventually drys out the pot. Takes about 1-2 weeks but it does blow the fuse(s) and the unit will need service.
* Final; Follow the Bunn set up and care instructions (manuals from Bunn.com for down loading. *FREE*)
Aloha, ukeboy57

Jul 20, 2017 | Bunn Coffee Makers & Espresso Machines

1 Answer

Water overfill


The A10 has a semi-sealed tank that keeps +1 pot of water heated and ready to brew. Pouring in a full pot of cold water will fill the top tray and allow a slow trickle of cold water into the top which forces hot water to over flow into the brew basket. This continues until all the cold water drains into the heater tank. So the brew is matched volume per volume. UNLESS the tank was empty or not filled prior to brewing. Follow the brewing instructions from Bunn (on line for *FREE* download at Bunn.com)
* If it leaks (from the bottom) only when you pour in water. Then your pouring it too fast and over flowing the fill tray. slowdown, watch the level in the tray. do not fill past the lid.
* If it leaks just sitting (not brewing) then there is a hole in the tank. Call for service.
* If it leaks after filling the tray half way. then the top of the tank has a leak, loose, cracked, or missing gasket. There is quite a few gaskets on the lid. Call for service.
* Final; Leaks are always bad around electrical equip. Best to unplug and call for service to be safe.
Aloha, ukeboy57

PS. Check your using the correct size decanter for this brewer. If it's a 10 cup brewer then make sure all the decanters in the office is also 10 cup. Pouring a 12 cup pot into brewer will have 12 cups of coffee come out (over flowing the 10 cup pot.) Note that not all decanters are made the same size. Other brands may be different. Test by filling a pot with water (from faucet) then pouring directly into pot in question. It should match and not under fill nor over fill.

Apr 04, 2014 | Bunn A10 Coffee Maker

1 Answer

Cant start the coffee


VPS/VPR (VP17-3 are the same except it has 3 lower warmers) 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 is turned on (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.
* Make sure the decanters are all the same size. do not mix a 12 cup pot with a 10 cup pot. One will over fill and the other will under fill. Make sure they match (in cup volume) FYI; Thermo Air pump pots are usually bigger than one pot. Typical filling only to 3/4th of the container. (I think most are in 2.5 to 3 liter sizes)
* If your not getting a full pot then the brewer was partially empty. The second brew (if done within the next hour) should come out full.
* If your still not getting a full pot then the water is leaking or is boiling off. Does it always steam from the top? Thermostat is shorted. Unplug the brewer and call vendor for service.
* Final; If your unplugging when not in use. Then follow the Pre-heat instructions mentioned above prior to plugging the brewer back in. If the tank has been emptied at night or dried up after an idle week. Then there is a chance you may over heat and blow the thermal fuse. Or at best have a half pot short brew as the water dried up.
* Note leaving the brewer plugged in without brewing daily is not a good idea. The water evaporates and eventually drys out the pot. Takes about 1-2 weeks but it does blow the fuse(s) and the unit will need service.
* Final; Follow the Bunn set up and care instructions (manuals from Bunn.com for down loading. *FREE*)
Aloha, ukeboy57

Mar 28, 2014 | Bunn VP17-3 Coffee Maker

1 Answer

Short pot of coffee


VPR has a semi-sealed tank that keeps +1 pot of water heated and ready to brew. Pouring in a full pot of cold water will fill the top tray and allow a slow trickle of cold water into the top which forces hot water to over flow into the brew basket. This continues until all the cold water drains into the heater tank. So the brew is matched volume per volume. UNLESS the tank was empty or not filled prior to brewing. Follow the brewing instructions from Bunn (on line for *FREE* download at Bunn.com)
* If it leaks (from the bottom) only when you pour in water. Then your pouring it too fast and over flowing the fill tray. slowdown, watch the level in the tray. do not fill past the lid.
* If it leaks just sitting (not brewing) then there is a hole in the tank. Call for service.
* If it leaks after filling the tray half way. then the top of the tank has a leak, loose, cracked, or missing gasket. There is quite a few gaskets on the lid. Call for service.
* Final; Leaks are always bad around electrical equip. Best to unplug and call for service to be safe.
Aloha, ukeboy57

PS, Check the pots in the office. Make sure they are all the same size. Decanters come in 3 sizes; 10 cup, 12 cup (standard), and 3L (3 litters). Check the decanter brand as each brand is a bit different in size. All metal decanters are usually very small (8 cup). What ever size you use, just make sure they are all the same.

Mar 09, 2014 | Bunn VPR Coffee Maker

2 Answers

How do you clean coffee maker?


Start a cycle and run 4 ounces of white vinegar and 16 ounces of water through the coffee maker.

May 29, 2011 | Bunn NHB Coffee Maker

2 Answers

Water doesn't come down when brewing


I had the same problem, and it turned out it was the top needle that was clogged. I used a safety pin to clean out the needle and it worked again . . . I descaled immediately, just in case it needed that too. I am back to coffee goodness!

Jul 07, 2010 | Keurig B60 Coffee Maker

1 Answer

Not brewing full pots of coffee


Check the in line water fliter. It may need to be changed.

You can try this also.

Put the brew basket in place with no coffee in it, put an empty decanter under the basket. take a full decanter and pour it in the water fill screen at the top of the unit. When the wtaer stops dripping and the unit is back up to temp, try a full brew cycle.

If it works OK, it just got low on water in the tank

Could be caused by a plugged up filter or lime scale build up.

Dec 28, 2009 | Bloomfield 8572 Coffee Maker

1 Answer

The coffee maker over flows with coffee


You might have to reprogram the brew level. Does it over fill the decanter or is is over flowing from the brew basket?
If from the decanter then reprogram, there are instructions behind the front panel.
If from the brew basket then adjust coffee grind and or volume, also check and clean the sprayhead.

Jul 14, 2009 | Bunn CWTF35-3- Stainless Steel

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