Question about ECM Giotto Espresso Machine
Our machine previously showed 1 Bar of pressure when ready. Now if unattended air pressure will rise about the warning red line, and will eventually expel pressure and kick off the wall circuit breaker.
What needs to be replaced?
That's a valve that's in line with the internal plumbing..that's all that restricts that pressure, which can build quite high.
can you provide the exact model number, please?
Posted on Mar 02, 2008
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I have taken the beast apart and watched it successfully cycle and fail to cycle.
Warning!!! (DO NOT TRY DIS-ASSEMBLY IT UNLESS YOU KNOW EXACTLY WHAT YOU ARE DOING AND RECOGNIZE THE COMPONENTS, You could electrocute yourself and suffer nasty permanent scaring... ouchie!)
I discovered the same as another person claimed a "check value" and/or air leak/lockup. The pump cycles, but can't get water so the machine shuts down to prevent over-heating. (The dreaded "Not Ready").
1. Turn off the machine and unplug until it is completely cooled, say 4 hours. (Allows for temperature equalization of the water chamber and the water supply)
2. Completely fill the water reservoir. (The extra water just helps the pump break the air lock).
3. Turn the machine on and wait for the pump to start drawing water.
4. Immediately knock 1-3 times on top of the water reservoir/machine (at the very top of the machine) about as hard as would knocking on a door. (Watch the water level, it should immediately start to drop)
The pitch of the pump should change when the water begins to be drawn into the heating chamber. (you can also hear the water flowing)
The problem is caused by air entering the water supply system. This air provides a "lock" on the system that the pump can't overcome. This can happen due to a number of issues but most issues should be this easy fix.
The machine refills itself 3 times. At Power-on, at beginning of the brew cycle and after the brew cycle.
Watch the machine and any time the pump cycles make sure it draws in water until it shuts down, if it doesn
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