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My Curtis Gem-12 is boiling the water before it even brews

The water tank is boiling the water and spewing hot water and steam

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Check water level sensor for lime deposit and clean with vinegar. Otherwise that is what it should do.

Posted on Jan 07, 2017


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Posted on Jan 02, 2017


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When it is brewing it make a loud noise during the brewing

Any coffee brewer will bring water to a boil and expel the hot water over grounds or into a container. This water is sometimes under great steam pressure and is released by the user with a knob, handle, etc. These pressurised machines all make noises but should be within the normal operating range while using the machine. If it makes noise other than when in use then there may be an issue. Have a technician check for safety reasons as you are dealing with a 'steam BOILER' . For drip makers there should be no pressure other than the normal 'glug-glug' sounds while brewing. A commercial brewer will just have water sprinkling down into the basket and possible 'whine' noise as the tank refills. But if it's not your normal noise then have a tech check it out.

Oct 14, 2013 | Coffee Makers & Espresso Machines

1 Answer

Krups KM9008 brews SLOW or not at all

If the cold water pumps from the bottom of the unit, you may have a problem with the one-way valve. Normally, this valve opens when the water is hot enough to pump up to the coffee basket, but closes to prevent the hot water from flowing back into the reservoir. If this valve is sticking, that could produce the symptoms you describe. Without actually seeing this unit, I don't know whether the valve itself can be replaced. This may require replacing the whole machine.

Jul 30, 2017 | Krups Coffee Makers & Espresso Machines

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My maxim steam coffee machine will boil the water and froth the milk, but for some reason will no longer allow water to feed through to make the expresso - any ideas?

First things first, try a descaling solution, especially if you live where there's hard water. Sometimes minerals can crust up the brewing portion of the internal tubing. The steam part still works because it essentially leaves the limescal in the pot, channeling only steam through the steaming wand. Dump out any water in the reservoir, then put in a mix of half filtered or distilled water, and white vinegar. Run it through, setting the switch for brew mode only. Once you see it coming out of the filter holder, turn the machine off. Let sit for an hour or two, then run the same sequence again, shutting it off the moment you see the water/vineger mix coming out. Once again, let sit a while, then on the third cycle, let it run all of the vinegar solution through. Let cool, and rinse the reservoir with water, (put in water, swirl the machine around, then upend it to dump the water out.) then run the full reservoir of distilled wather through, repeating if necessary, to clear out the vinegar.

If that doesn't work, or if the vinegar solution never comes through, not even in a trickle, then there are other issues. Here's how to troubleshoot them.

The next steps will need to be done with some caution, as it may splash or shoot steam and/or boiling water out from the side of the porta filter holder!

Step 1...Remove the filter, and run it without coffee or filter in it. Do this from a few feet away or with something between you and the brew head of the machine, as it may cause hot water to spray with a fair amount of force!

Does the water come through the filter holder? If it does..

Step 2. Run it with the empty filter. If it the water doesn't come through with filter in place, then your filter is clogged, and you'll need to take a pin and clear the holes in it. If it does, then you're grinding your coffee too finely, or tamping it down to hard.

If the water doesn't come through with just the empty filter holder, then you've most likely got a valve (A.k.a. Brew/steam switch) problem. Frankly, it's easier to buy a new machine than replace that valve, especially if it's the automatic variety that switches you to steam whenever it's finished it's brew cycle.

If you've got one with the manual brew/steam switch valves, you can pull the knob off and see if it the stem turns with a needle nose pliers...{{NOTE: DO NOT DO THIS IF THERE IS STEAM LEAKING AROUND THE KNOB! Steam leaking around this knob can indicate that the ceramic valve is compromised, and could cause live steam to shoot out of the place where the knob is!}} if it does turn as smoothly as usual, and the machine works, then you just need to repair the knob because it's gotten stripped out or is broken where it meets the valve stem.

Nov 08, 2017 | Coffee Makers & Espresso Machines

1 Answer

Our Curtis Alpha coffee maker has not been used in a while. After running water through resevoir to ensure the tanks were full we brewed a pot. Coffee came out very light and cold. What should the next...

Sounds like elements are not turned on there might be a switch for the elements or the hi-limit thermostat is damaged, or the pressure stat is turned off.

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You didn't give a model number so I'll tell you both methods. The F5xxx and F6xxx models have a cap at the top of the clean water tank that doubles as a measuring cup. The cap is about 3 inches in diameter. Fill the cap to the fill line with shampoo and dump it in the tank. Then fill the tank with hot (Not Boiling) water.
The F7xxx series has a 2 section tank. The large section is for hot (Not Boiling) water. The smaller section is for shampoo. Fill the smaller section with shampoo and the Steam Vac will mix the water and shampoo for you in the proper proportion.

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