This a simple problem. When you move the hadle to make coffee this is pressing a micro switch on which give the signal so the water pamp start and brew the water throght the coffee.
Now in your case this micro switch stuck at on position all the time so by switching on the machine then the pump start and thus you have water non-stop.
The solution is disassemble the machine and check the microswitch, you can us a lubricant like UD40 or similar. If the switch still remains stuck then you need to replace it.
Have you ever wondered, 'how do I descale my
expresso machine?' First lets us understand what is exactly is scaling.
The build up of minerals inside the hot parts of your coffee machine or
espresso machine is commonly called lime scale. When lime scale
builds up inside the Espresso machine, it slows down the water flow,
reduces the boiler capacity and can prevent your coffee machine from
working properly. To keep your Espresso machine operational at full
order, it is important to descale it every three months. The time
intervals between descaling depend upon many factors. Quality of your
water and the amount of water running through the machine are the two
main factors that decide the frequency at which you should descale your
Espresso machine. The more you your machine, more often should you
descale it. In some cities, in conjunction with a water filter you can
use your coffee machine for a year or more without descaling at all. If
you use less water by drinking espressos you'll need to descale less
often than if you make cappuccinos.
Descaling products are widely available from stores
that sell coffeemakers and espresso machines. Be sure that the product
you buy to descale your Espresso machine is intended for this specific
use only. Before you descale your Espresso machine, always unplug it and
make sure that it is cold. Also, never immerse the appliance in water
and nor should you use abrasive cleaning products
or scouring materials on any part of your Expresso machine. In case
your Espresso machine does not come with a instruction guide or booklet,
then use a proper citric acid based descaling solution designed for
espresso machines. This should be mixed and prepared as per the
instructions on the bottle or packet. Once your Espresso machine has
been descaled properly you would not be left wondering, 'how do I
descale my expresso machine?', treat yourself to a great cup of coffee.
Some popular models of Espresso machines are Krups EA8080 Espresseria Automatic, DeLonghi Magnifica EAM3200S, Krups Nespresso CitiZ & Milk XN 7106 Fire-engine red, DeLonghi Perfecta ESAM5400, DeLonghi PrimaDonna ESAM6600, DeLonghi Magnifica ESAM4200S, DeLonghi Perfecta ESAM5500 and Magimix Nespresso Citiz M190.
HOPE THIS HELPS. MIKE (MR BEAN MAN) FROM FIXYA
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