The in-tank filters will deal with most of the lime scale and improve the taste
of coffee as it removes contaminants. To use filters set the machine to 'Filter:
Yes' and change the filter as soon as possible after the machine requests it.
Filters have a finite life span which will be marked on the packaging (usually two
months) this period starts from when the filter is put in the tank and it must be
changed by that date as the filter will start to disintegrate.
If you prefer to do periodic de-scales then you set the machine to 'Filter:
No'. The machine will then periodically request a de-scale by displaying a message,
you don't have to do this immediately as it takes up to 50 minutes to do.
The frequency of de-scales depends on the water hardness, this can be found on your water company's
website and should be entered via the menu.
The de-scaling chemicals are quite strong so take appropriate care and follow your
for the exact
If your impressa machine has a plumbed in water supply connected
directly to the tank you must turn off the mains water
while de-scaling so that the correct amount of water is used for a descale.
Remember that de-scaling tablets are not the same as Coffee-cleaning tablets and
they should be placed in the water tank with the correct amount of water.
Never put anything like instant coffee, drinking chocolate etc. in the chute, only
the correct amount of pre-ground coffee, avoid finely ground coffee as it will clog the chute. The only other item allowed
in is a coffee cleaning tablet (not a de-scaling tablet) when doing a coffee clean.
When putting Pre-ground coffee down the chute remember that the chute tapers down to a small opening at the bottom, if you simply turn the scoop upside down and the coffee goes down the chute as a ball of coffee it can get stuck and fall out onto the back of the drip tray. The machine will give you a message like' Not enough Ground Coffee'. The cure is to pour the coffe in over the edge of the scoop so that it flows smoothly down the chute.
The only thing that should go into the grinder are reasonable quality coffee beans
that are not too cold. Beans that are straight out of the fridge or freezer will
have condensation on them which will clog the grinder, oily beans also cause blockages
due to their stickiness.
Avoid beans with any sort of coating on them.
Only adjust the grinder when it is actually grinding, so press a coffee button and turn the
adjustment knob a small amount, then make another couple of drinks to test the effect.
Don't have the grinder set any finer than you need to get a good crema on the coffee.
Obviously water goes in here, also filters or de-scaling tablets, but never both
at the same time.
Always fill the tank by removing it and taking
it to the tap. If you pour water into the tank while it is on the machine some water
will always splash out and get into the grinder or pre-ground chute.
The tank itself can be washed in soapy water when required.
If your machine cannot recognize that the tank is full and keeps telling you to fill the tank even
when it is full, the problem can be that the floating magnet in the tank is stuck. The magnet is in
a groove on the side of the tank facing the machine and is free to rise a short distance when the
tank is filled which triggers a sensor. Washing the tank will normally cure this problem.
Some newer models do not have a magnet in the tank but use an electronic sensor, if this fails the only cure is to replace it.
This can be washed as needed but take care to dry the area around the contacts (if
fitted) on the back of the tray, particularly after de-scaling otherwise the machine
will repeatedly tell you to empty the tray.
Milk Nozzles and Frothers
If these become blocked and have been cleaned with cappuccino cleaning fluid. Try soaking in a solution of biological
washing detergent or failing that give them a soak in de-scaler.
Do not run hot water through the nozzles - or put them in the dishwasher, as they will stop working properly.