Top 20 Bunn-O-Matic Coffee Brewer GRW8 - Page 7 Questions & Answers

You should call your vendor for service. Especially if this equipment is on loan. *** The following is for information only. All repairs should be performed by a qualified tech.*** Okay, I'm NOT going to ask how you turn the burrs. * The starter capacitor is bad or disconnected. It's the bulge on the top of the motor. * There usually a schematic on the back plate or panel. * Go to bunn.com to 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! * 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. Aloha, ukeboy57 PS. Removing the rotor can be tricky. I did have one with a bolt ground up between the two plates. Hammer time! Not fun. Try a large gear puller but you really have to be careful and not damage the shaft. Check the manual to make sure you have all the parts assembled right. There is a 'button' that goes under the adjustment screw. Looks like a nickle with a dent in it. Also adjusting the burrs too far out will grind metal (from the case) or grind the burrs if it's too far in. Many try to grind stuff to "Espresso" fine grind to get more flavor from the brew but this just shortens the life of the burr plates and overheat the motor which is not rated for this fine a grind. (use a G3 or espresso grinder for this purpose.)

Take off spray head and the nut under it. Lift the fill water lid. Remove screws. Lift the top off. Remove the nut where the water runs into the tank. Now lift the tray out. Now you can disconnect one end of the heating element and test it. It is probably good. There are 2 thermal fuses connected (under the white sleeves) that usually open. They carry them at Radio Shack and other electronics stores. There is a temperature marked on the side in Celsius. They should read like a normal fuse (continuity if good). I have replaced several of these and have not had a bad element yet. Good luck

The KitchenAid Pro Line on the Williams Sonoma site only shows counter top pour over type brewers. Most "Plumb in" brewers are commercial level brewers. The common Brands are Bunn, Curtis, Bloomfield, Kraft, etc. All commercial brewers require a qualified technician to install. Most require plumbing, electrical, and set up prior to uses. The installer will hook up the water line, fill and test the brewer, adjust it to the size of decanter you are using. Check the coffee amount matches your brewer and decanter. * I would recommend taking a look at the Bunn CWTF line for a model that would fit your needs. (I'm a retired coffee tech that worked on many brands. Bunn is very reliable. Curtis would be another good choice.) Aloha, ukeboy57 (W/S link below) https://www.williams-sonoma.com/shop/electrics/coffee-makers/?cm_type=gnav

If it is faulty return it to the place of purchase.

What do you want to adjust? Pour time/volume, temperature???

Please provide model number.

Fill your carafe about an 1/8" over the target cup line. Remember some water in the tank is lost to evaporation, and some water remains in the used coffee grounds. Adding a little extra water makes up for that.

Sounds like the tube feeding water from the reservoir to the spout is clogged. There is a spring Bunn supplies with the coffee maker that you need to use. Twist loose the plastic piece above where the coffee filter basket is and remove it. Then push the spring as far as you can into the line. Sometimes you have to push a little hard but when you push it in make sure you leave an inch or so still sticking out so you can grasp it to pull it back out. Repeat this a few times to make sure the line is clear of any build-up. Another idea is to remove the plastic top of the machine by removing the 4 screws and see if the hole where the water drains into is clogged or won't open. Hope this helps.

Remove the top panel and locate the level probe in the top of the boiler. Remove the probe and clean off any lime scale. This should stop the overfilling.

Hi I have gotten a few from here Free User Manuals and Owners Guides ManualsOnline com kolbrun

Make sure it's getting power, and that the "vacation" switch isn't on. If on a GFCI outlet, press the RESET button - Do Not press the "test" button. If GFCI is located on the breaker or another outlet (not uncommon), try resetting the breaker or that other outlet. If still no joy, check that the outlet is hot by plugging something else into it. If that item doesn't work either check the circuit breaker for that outlet by moving the lever all the way to the Off position, then back to the On position. You should hear a click like a light switch.

lift filler led and remove 2screws on top of reservoir Then remove 4 screws that hold the reservoir on an you should be able to lift it off

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.*** * There is an on/off heater switch located in the back of the brewer. This should be on when the brewer is needed. There will be a 20 minute wait for the "ready" to brew light comes on. If you brew before the light comes on then the coffee will be only warm. * If everything is on and looks okay but it takes forever to light the ready light then the main heater is not working. Call your vendor for service. Aloha, ukboy57 P.S. The 3 liter brewer has a much larger tank than the regular 2.5 brewer. So expect it to take a bit longer to reheat a full brew. Some customers will request the 'Airpot' or 'Pump pot' to be filled to the top which means even more water is needed to be heated. Expect at least a 20-30 minute wait on reheating. I've found that customers that use this large a pump pot will brew +3 pots in a row. (Regular, Decafe, and a 2nd regular or 'flavored' coffee.) Often brewing without waiting for the ready light. If this is the case then mention this to your vendor. You may need a 2nd brewer, larger brewer, or have the brewer hooked up to the 'Hot' water line to get pre-heated water to the brewer (though they may need to modify the water valve to one that is rated for hot water inlet line.). If your using larger 3L decanters then having pre-heated decanters and using the 'pour over' function can aid with faster brews. Though this method is a lot of work for the operator.

Cold is better because it will cause the heating element to activate which will increase the effectiveness of the brew rite.

Make sure it's getting power, and that the "vacation" switch isn't on. If on a GFCI outlet, press the RESET button - Do Not press the "test" button. If GFCI is located upstream on the breaker or another outlet (not uncommon), try resetting the breaker or that other outlet. If still no joy, check that the outlet is hot by plugging something else into it. If that item doesn't work either check the circuit breaker for that outlet by moving the lever all the way to the Off position, then back to the On position. You should hear a click like a light switch.

Most likely it is scale on the lvl sensor, what model is the unit? Also, do not use viniger on plumbed units, you will almost never get good coffee out of it unless you pop the tank lid and drain the tank.

* Check bunn.com for a free download of manual for this brewer. * If this is a pour over (VPR, VPS, etc.) then you must pre fill it then pour in one pot of water to get one pot of brewing hot water out of it. * If this has an external tank of water then it must be filled and make sure the float sensor works and pops up to indicate a filled tank. * But most likely this is a CWTF, CW, or larger commercial brewer that has a plumbed in water line. If this is the case then the tank must be pre-filled and heater turned on. (a switch in the back) Installation is usually done by the vendor or service tech. It should have been tested and brewed to check water level of brew. Follow the brewing instructions. * Still not working? Call vendor for service. It could be timer, brew switch, water level board, water fill valve,brew valve. all need check and service to replace as needed. Many larger units have high voltages so call the tech to be safe. Aloha, ukboy57

Check bunn.com for a free download of your model's manual. You should contact your vendor for service. *** the following is for information only. Service should be performed by a qualified tech.*** * Most Bunn grinders usually have an adjustment screw in the middle of the burr plate housing. * LPG is under the bottom chute. It's hard to see and you may need a mirror. Take a stubby flat blade screw driver in the slot and turn as needed, but go a quarter turn at a time! * G2/3 have a large dial with the grind sizes clearly marked out. There is an adjust/calibration screw in the center of the knob. * G9 have a large bolt in the center of the burr with a slot that could fit a quarter coin in it. You must un tighten the locking nut to turn it. Make sure you lock it down again after the adjustment. * Final; if there any loud noise or grinding metal sounds or the motor hums and stops. Then turn off grinder right away. Back off whatever you did last and try again. If it's still making noises then unplug and call your vendor for service. Aloha, ukeboy57

Check bunn.com for a free download of manual with maintenance instructions. * In general; -Keep the area clean by wiping down with a damp clean cloth. -Remove the brew funnel and wipe spray head of coffee and grit. -Wash the brew funnel after each use. -Dump out old coffee and wash pots after closing. Heavy coffee stained pots can be filled with plain water and soak over nite. Rinse clean before using. -For extreme caked on dried coffee pots; fill with hot water and leave on warmer over nite. Ask vendor for URN cleaner and add a tablespoon in pot with hot water. Let sit over nite on warmer plate. Rinse clean prior to use. -Check if everything is working properly. Better to call and leave a message for service. * when in doubt, call vendor for service. 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