Top 20 Bunn-O-Matic Coffee Brewer GRW8 - Page 4 Questions & Answers

Don't know the model but here are things to check prior to calling your vendor for service: * Plugged in? No lights? Check if GFRI outlet is tripped out. * Is it turned on and ready light lit? Some (CWTF's etc.) have a green or read ready lamp that lights up when the brewer is hot and ready to brew. * No Ready light after 15-20 mins of being plugged in? Cheuck the back of unit for a toggle switch (or rocker switch). Check if it's on. Some units may say "Vacation". It should be on normal or brew. * Brewing works but not hot. Was the ready light on when you started the brew? You have to wait till it's lit. Still not hot? Then call for service. The heater, High limit, Thermal fuse,Thermostat needs to be checked. * If this is a new unit then be sure to turn on the thermostat as it comes from the MFR in the off position. * Final, Call your vendor to be safe. Aloha, ukeboy57

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

1.check the setting of your timer 2. open the top and see if the pan is overflowing or water is sprayed from the jet . rudy.ky

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

It depends on the model you have but usually as long as you had water in the tank you can use as usual. If the power was off for a long time it will take up to 20 min to heat the water back up to temperature.

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 thank 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

Okay no model given, * Pour over brewers only leak if over filled (more than a pot). If it leaks just sitting there then there is a hole in the tank. Call for service or replace. * Commercial machines like CW, CWTF, Single, Dual, Urns, are plumbed into a water line. Leaks may come from the water line, Tank, or urn. * If the water leak is clear and not hot then it's the water inlet line. * If it's hot then the heater is leaking, * If it's coffee colored then it's the urn where the coffee is being brewed. * In All cases call your vendor for service as this is a hazardous situation. Unplug or turn off the power to the unit. It should be on a large throw switch near any large brewer. Have maintenance turn off the breaker and leave of till the vendor can service. Aloha, ukeboy57

Bunn is very good about replacing their products. I'm attaching two links, the first one describes the BUNN warranty. The second one allows you to lookup your specific product, please scroll to the bottom of this page and insert your serial number. Hope this helps. http://www.bunn.com/sites/default/files/wysiwyg/bunn_home_product_warranty.pdf Product Warranties

I'm guessing there is a funnel under the grounds discharge port and your not using a bowl to collect the grounds. (some places do this to measure their own amounts to adjust brews.) * There is a square thin metal "chaff plate" at the top of the discharge port. With a flash light look up into the chute. you should see a blackish/blue steel flapper (like a playing card in a bicycle spoke) Do NOT stick your finger up there! Yes, there may be exposed grinding plates that are sharp! * if it's not there or broken (it's steel and very brittle) then it needs to be replaced by a service tech. It's a bit tedious to replace and in a very cramped area. * Grinding generates a lot of static (even in Hawaii with 80% humidity) so expect some splatter or at least grounds clinging to the sides. It will settle after a while. Many places leave the funnel in place with coffee already ground in the funnel so they don't have to wait for the grinder. Aloha, ukeboy57

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 is turned on. 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. * 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. Aloha, ukeboy57

Okay, I'm NOT going to ask how you turn the burrs. * The starter capacitor is bad or disconnected. * you can download the Bunn manual which has the wiring diagram on the back pages. This should be a FREE download. AVOID using the word "manual" as it will re-direct you to scam sites that charge for free stuff. * I know following the wires is a bit tricky.. Especially on the G9-2 with everything doubled. Take your time or seek help from a tech or your vendor. * The capacitor is round and usually attached to the motor like a 'hump' on the side or near the top. If you didn't take it apart then one of the wires in the switching side may be miss wired or loose. Check both for loose and correct wired. Careful around the capacitor as it may still have a charge! Aloha, ukeboy57 P.S. The capacitor is used to kick start the motor with it's heavy burr plates. Oh, and if your still having problems with low power. Check the motor for burnt smell as you may have overheated and fried the motor. They usually have thermal resets, but if you kept forcing the reset to keep grinding then the motor is defiantly burnt out.

Don't know the model but here are things to check prior to calling your vendor for service: * Plugged in? No lights? Check if GFRI outlet is tripped out. * Is it turned on and ready light lit? Some (CWTF's etc.) have a green or read ready lamp that lights up when the brewer is hot and ready to brew. * No Ready light after 15-20 mins of being plugged in? Check the back of unit for a toggle switch (or rocker switch). Check if it's on. Some units may say "Vacation". It should be on normal or brew. * Brewing works but not hot. Was the ready light on when you started the brew? You have to wait till it's lit. Still not hot? Then call for service. The heater, High limit, Thermal fuse,Thermostat needs to be checked. * If this is a new unit then be sure to turn on the thermostat as it comes from the MFR in the off position. * Final, Call your vendor to be safe. Aloha, ukeboy57

I thought these are pour over brewers? Which means you have to fill it with water in order to brew? It should happen when the unit is filled first, plugged in then turned on.(see link below for MFR instructions) Aloha! ukeboy57 http://www.bunn.com/sites/default/files/care-and-cleaning/43097_0002d01_velocity_brew_manual_english-_bt_st.pdf

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 is turned on (CWTF's have a toggle switch behind the machine). 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. Aloha, ukeboy57

you would have to unplug it, and then turn it upside down over a sink with the cover and coffee pot removed. be careful, the water in the reservoir is quite hot and ready to brew.

* call vendor for service. Brew timer or water level float needs adjustment. * Make sure your using the correct brew pot for this machine. It's 64 oz decanter if I remember right. Some of the older glass pots are smaller. Especially if it's the roundy one that looks more like a ball. It should hold at least 1 quart of water easily. Ask your vendor for the correct pots (they don''t like you using 'other' brands of coffee if it's printed on the pot. * Long shot but possible the valve was put in backwards. Either way the vendor should replace it. Aloha! ukeboy57

There is a ready light (green but sometimes red) that will go on and off as the brewer heats up. It will periodically turn off when re-heating but should light when ready. This is normal. * Bunn have red rocker switches that are sometimes lit when in use. Some do flicker but still work. Call for service if not. * Rocker (RED) switches should have a definite click sound from the switch. these are usually the warmer plate or on/off switches. Some may flicker but you can check the warmer plate if it's working. Ask the vendor to change it the next time they come by as it still works but annoying. * The black rockers (unlit) should snap to all EXCEPT the brew switch which tends to be mushy with a spring back. The only way to know if it works is the plate gets warm. * Check the outlet if any other machine shows intermittent power. Some places overload the outlet and trip the breaker or GFRI so frequently most people unknowing think the power blacks out all night but really someone just reset the breaker. Have maintenance move the brewer on another outlet (and breaker) or have the breaker checked as it may be worn. * Call your vendor anyway as there may be an electrical short or loose wire inside the brewer. Many times I've found the warmer plate wires burnt or fell off the terminals. Aloha, ukeboy57

The heating coils may be calcified. With the machine off- pour some vinegar into the water tank. Let it sit over night. then pour clean water in and run it at least 3 times to flush out the vinegar.

Humm, G-3 grinders. Okay what common problems I've come across: * Wrong setting for grind on label. Usually means worn out grinder burrs. But this does not happen often unless you are using it to grind commercial amounts of coffee? It's a retail level grinder meant to be user friendly and simple to use. Say grind a bag of beans once every 10 mins or so even with customers lined up to grind there own. Running a G-3 constantly is usually done by upcoming coffee vendors whom are using it for small flavored bean batches. But expect the burr plates to only last 3 to 6 months. We used to change it every month till the boss bought a bigger pro grinder. (whew!) * Out of calibration (for grind) This usually happens as soon as it's installed. Either the grinder got banged (Dropped?) around or the lock nut was not tighten down. If caught quickly then it's a simple adjustment. Left unchecked will wear out the burrs or crack the plate. * Trips out breaker. This is common at retail stores as it's located in a shelf rack that really does not have the required outlets. Many times there is a brewer(s) connected to the same line. It only trips out when one or both brewers are heating and the grinder is running a very fine grind. * Trips out breaker when grinding espresso or very fine grinds. Worn burrs or slim chance the grinder was miss calibrated (but you would catch this when first installed) * Shocks the customer. Dry climates or heavy air conditioning will build up static electricity at the chute. There usually a small chain attached to the chute to prevent this. Attach a SHORT metal chain or thin cable to the metal case of the grinder and add a metal clip to attach to the coffee bag. Many use a chain and clip just short enough to keep the bag positioned under the chute. Note many coffee bags come with bag clips. Just make sure the clip and chain can't get stuck in the grinder. * Not working. This is usually the on/off switch as it gets beat up the most. There is sometimes a safety micro switch under the chute to sense if there is a bag there. I've found may have been defeated. * No power, check cord, breaker (GFRI) outlet, Plug prongs if broken off or bent. * power but no motor hum. Tripped thermal breaker (usually a red button on side or back. Some models may have it inside on the motor itself. Call for service to check. * Turns on but loud hum (may be hot too). Burrs stuck. This could be from adjusting grinder while grinding beans and adjusting to a fine setting. Grinding finer slows down the beans feeding the burrs. Large settings flood the burrs with a lot of beans. Adjustments are usually done when the grinder hopper is completely empty. If loaded and turned down from coarse to fine grind the beans already in the burrs get crushed and stuck between the plates thus locking them in. It may be possible to clear the hopper and open up the grinder to its coarsest setting to jog out the crushed beans. Otherwise call for service to have the burrs cleared manually. *Finally check with your vendor if your still having problems. Aloha! ukeboy57

First, Though I have worked on many Bunn commercial systems. I'm not quite familiar with the newer MCU though I've worked on similar single cup home systems. * Most single up systems like the Cup/Pod/Capsule usually have a air flusher that pushes all the water out of the brewer to extract all the flavor and prevent old liquids left in unit. * If your still dripping, have wet pods/capsules/cups, then it sounds like the air pump is not turning on or not working properly. Bad pump could be a cracked or loose hose as the pumps don't really wear out as it's only air (hopefully clean air, no dust). Call for service. * The brew cycle might not be completing thus not continuing on to the next step which is to pump air in. Brew sensor or timer out. call for service * Computer is out or fried (especially after an electrical storm). Call for service. * Finally, most of these home units do not have serviceable parts. Most take at least an hour to service. So if your not in the warranty period it may not be worth fixing. But be sure to call your service provider or MFR for advice. Aloha! ukeboy57