Question about Mr. Coffee ECM20 Espresso Machine

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ECM20 not working properly

My ECM20 not make my coffe anymore, i had tried to disassembly but i don't have the manual to do, somebody can to help me please.


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Re: ECM20 not working properly

I fixed one of these for a friend yesterday.

The valve that selects coffee or steam has fairly small holes in it and if the pressure vessel gets contaminated with scale or sludge of any form, it is easily clogged.

I was able to finally fix it. It required that I disassemble the entire unit to get access to the valve portions so that I could inspect and clean it. Too much trouble to relate how it works, but the key things are that the unit has to be taken completely apart. If you aren't good at doing that sort of thing, then you should buy a unit that is more maintainable.

To disassemble...

Remove all obvious and easily removable parts from the unit.

Using a Torx #15 security bit, remove 6 screws in bottom. (Two are under rubber feet in the middle.)

Using a 12" Phillips screwdriver, remove 4 screws deep inside well of unit. THey are around the back side of the unit and they hold the top on.

A hole underneath where the valve knob attached is visible inside the well. Rotate the valve knob until you can see a small depression clip that holds the valve knob on. Using the long phillips driver, push on the tab while removing the knob.

Remove the screw in the center of the water spout under where the carafe goes. Remove the metal screen. Remove the rubber gasket. Remove the four phillips screws in the perimeter of the carafe spout. ( A short phillips screwdriver is required.) Remove the entire plastic piece once all 4 screws are out.  It is hard to dislodge..

Pry up the top cover. There are several places where it binds. These include around the filling hole, around the steam vent exit, and around the knob. Work it until it is off.

Remove the pilot light by removing the single phillips that holds it in place.

Work the microswitch loose by examining and manipulating the two little tabs that hold it in place.

Remove the microswitch holding bracket by removing the two phillips screws.

Remove the plate that holds the valve plastic in place by removing two phillips screws.

Remove the valve plastic. Examine it and look for gunk stuck in the tiny holes. Clean it out. A lot.

(If you're really ambitious, take off the screws holding the pressure vessel in place, disassemble it, clean thoroughly, and reasssemble. (If you do this, you'll have to disconnect the wiring at the bottom of the unit's base. Make a note of what goes where to facilitate reassembly.)

Reassemble, going backwards.


Celebrate if you are successful. Otherwise, curse George Bush for getting us in this mess. Elapsed time should be in the 1-2 hour range, worst case.

Remember... unplug the unit.  You are dealing with a heated pressure vessel, so reassembly should be done carefully.  Obviously, work only on a cold unit.  A small flashlight and magnetic screwdrivers are useful.  Toothpicks make good cleaning aids for the valve.

Posted on Apr 26, 2008

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