Preventative Maintenance And Weekly Cleaning - La Marzocco Strada EP Operating Manual

6. Preventative Maintenance and Weekly Cleaning

WARNING
THE MACHINE MUST BE INSTALLED SO THAT QUALIFIED
TECHNICAL PERSONNEL CAN EASILY ACCESS IT FOR EVENTUAL
MAINTENANCE.
CAUTION
THE MACHINE MUST NOT BE DIPPED IN, NOR SPLASHED
WITH WATER WHILE CLEANING. FOR CLEANING
OPERATIONS, PLEASE FOLLOW THE INSTRUCTIONS
LISTED BELOW VERY CAREFULLY.
1) Cleaning groups and drain wells
- Put a tablespoon of detergent powder for coffee machines into
the blind fi lter, supplied with the machine, and attach it on the
group to be cleaned.
WARNING
DO NOT REMOVE THE PORTAFILTER WHEN ITS REALTIVE GROUP IS
BREWING HOT LIQUIDS. THE COFFEE BOILER CONTAINS WATER AT
ELEVATED TEMPERATURE. WATER TEMPERATURE OVER 125° F / 52° C
CAN INSTANTLY CAUSE SEVERE BURNS OR DEATH FROM SCALDING.
- Turn the Paddle Valve on and off approximately 10 times (10
seconds intervals) on each group.
- Rinse the group using a normal fi lter by running hot water through
it several times.
2) Cleaning fi lters and fi lter holders
- Put 2 or 3 teaspoons of detergent powder for coffee machines
in about 1/2 a litre of VERY HOT water.
- Dip fi lters and fi lter holders in the heated solution and leave them
fully submerged for about 10 minutes.
- Rinse thoroughly with clean water and run hot water through one
group several times with the fi lters in place.
- Make one cup of coffee and discard in order to remove any
unpleasant fl avor.
3) Cleaning the drain collector
Remove the drain tray daily and clean.
Inspect the drain well also, and wash away any leftover grounds.
4) Cleaning the body
Wipe the stainless steel surfaces with a soft, non abrasive cloth.
Do not use any alcohol or solvents whatsoever on painted or
decorative parts to avoid damage.
5) Cleaning the hot water and steam nozzles
Steam nozzles must be cleaned immediately after use with a
damp cloth and by producing a short burst of steam to prevent
the formation of deposits inside the nozzles, which may alter the
fl avor of other drinks to be heated. Hot water nozzles must be
10
cleaned periodically with a damp cloth.
6) Cleaning the Diffuser Screen
Due to portafi lter discharge operations (subsequent to coffee
brewing), a certain amount of coffee grounds may slowly build-up
and even partially obstruct the diffuser screen.
To clean it, fi rst unscrew the diffuser screw, then remove the
diffuser screen.
Put 2 or 3 teaspoons of cleaning detergent for coffee machines in
about 1/2 a litre of water inside a heat-resistant container and heat.
Place the diffuser screen(s) and diffuser screw(s) in the solution
and leave them fully submerged for about 10 minutes.
Rinse thoroughly with clean water. Install and run hot water
through each group several times with the screen installed.
7) Water Pump
When brewing coffee, and you can adjust pump pressure by turning
the by-pass screw clockwise to increase and counter-clockwise to
reduce pressure. Adjust pressure only when one or more groups
are brewing coffee.
8) Water Filter/Softener
Please see the documentation accompanying the water fi lter/
softener for proper operating and cleaning instructions.
V1.0 La Marzocco, S.r.l.
GROUP
ASSEMBLY
DIFFUSER
SCREEN
DIFFUSER
SCREW
Scarperia, Firenze, Italia