Grindmaster Coffee Makers & Espresso Machines - Recent Questions, Troubleshooting & Support

The Grind select lever moves the grind burrs together by the looks of it. Perhaps they are worn down by people grinding Turkish coffee or the mechanism isn't moving them closer together? There are helpful links and videos in the link https://www.google.com/search?q=Grindmaster+500 ..

Most grinders, especially the larger professional models will eventually need to have the grinding wheels (set of 2) changed out. They do wear down. The grinder will struggle as the burrs on the wheel dull out. This increases the time it takes to grind coffee and puts a heavy electrical load. Burnt out switches, tripping breaker, overheating, and burnt coffee grounds on espresso size are all symptoms of a worn burr set. It's common to find; stones, nails, jewelry, and small loose things found around coffee counters in the grinding wheels or burrs. Have a qualified operator remove all beans and hopper to check and brush out burr set. This should be done every day. Talk to your vendor if you find nails as they can easily correct this with a magnetic pick up. Another cause is very oily beans. Sometimes poorly roasted beans come out extremely oily which will gum up everything from the burrs, Moving parts, and electrical components. Disassembly of entire machines may be necessary. .Final note; since you mentioned a switch swap. It's possible the switch is underrated for use in this machine. Most will work in a pinch but like a 'spare' tire in a car, they are only ment to get you to a service center for replacement.

Love your 'handle'!

I'm thinking that there is something in the burr in the unit. Empty the unit and remove the burr. Usually, this is done with a counterclockwise turn. Note how hard it may be to turn...you'll have to reverse this when you put it together. Now, clean out any coffee debris you find. Then, turn the unit over and tap it on a firm surface covered with newspaper. Reassemble and return to service.

Hi sue3756,

The flashing green means that the water heater is heating water tank. During this time Brewer will not brew. Wait until the light goes on a steady green. Steady green means that the water tank is at operating temperature and ready to brew. For additional information about the machine, please click the link below.

Grindmaster PrecisionBrew user manual

Hope it helps.

Thank you for using FixYa.

After the first brew the machine should brew excactly the amount of water added to the water reservoir. Since the reservoir always keep half full then you should add the maximum amount you need in two steps.