Preventative Maintenance And Cleaning - La Marzocco leva 1 group Manual

WARNING
Jets of water should not be used to
clean the machine, nor should it be
placed where water jets are used.
WARNING
Do not remove the filter holder
while relative group is brewing hot
liquids. The coffee boiler water
at elevated temperature. Water
temperature over 125°F / 52°C can
cause severe burns instantly or
death from scalding.
WARNING
The machine must not be dipped
in, nor splashed with water in
order to clean it. For cleaning
operations, please follow the
instructions very carefully.
WARNING
This machine is designed only for
preparing coffee and hot drinks.
WARNING
The expansion valve can discharge
water as hot as 200°F / 93°C.
Adequate protection for handling
this component is needed before
attempting to adjust.
1) Cleaning group and and drain wells
- Remove the diffuser screen and wash it
separately as described further below.
- Using a wet soft cloth, clean the surface
of the piston laying under the removed
diffuser screen.
- Unscrew the siphon screw.
- Add a spoonful of espresso-specific
powder detergent to the blind filter in
the portafilter (following the instructions
provided by the product manufacturer), then
insert the portafilter into the group you wish
to clean.
By operating the lever, raise and lower
the piston multiple times until the water
flowing out of the siphon is clear and
contains no soap.
WARNING: during this stage, do not release the
lever. The system cannot generate enough
back pressure to prevent hammering,
which may damage the machine.

5. Preventative Maintenance and Cleaning

2) Cleaning filters
- Put 2 or 3 teaspoons of detergent powder
for coffee machines in about 1/2 a litre
of water inside a heat-resistant container
and boil.
- Dip filters in the boiled solution and
leave them fully submerged for about 30
minutes.
- Rinse thoroughly with clean water and
run hot water through one group several
times with the filters in place.
- Make one cup of coffee and discard in
order to remove any unpleasant flavor.
3) Cleaning filter holders (portafilters)
Using the proper cleaning tool (brush)
wash the filter holders under hot water,
a neutral detergent may also be used.For
extraordinary cleaning see the Portafilter
Manual.
4) Cleaning the drain collector
Remove the drain tray grill at least twice
a week and clean, pull out the water drain
collector and clean it thoroughly. Inspect
and clean also the drain box and remove
any leftover grounds.
5) Cleaning the body
Wipe the stainless steel surfaces with a
soft, non abrasive cloth in the direction of
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