La Marzocco strada ep Operating Manual - page 13
EN
13
Once the test has been performed,
learn which treatment system is most
appropriate for your particular water supply
by filling out the online water calculator
on our website: LA MARZOCCO WATER
CALCULATOR
(http://www.lamarzocco.
com/water_calculator/).
3) Water supply connection
In order to connect the machine up
to the water mains proceed according
to the indications given in the chapter
about Installation and in compliance
with any local/national safety standards
of the location in which the machine is
being installed.
To guarantee a correct and safe
functioning of the machine and to
maintain an adequate performance
level and a high quality of the beverages
being brewed it is important that the
incoming water be of a hardness greater
than 9°f (90ppm, 5°d) and less than 15°f
(150ppm, 8.4°d), pH should be between
6.5 and 8.5 and the quantity of chlorides
be less than 50mg/l . Respecting these
values allows the machine to operate at
maximum efficiency. If these parameters
are not present, a specific filtration
device should be installed, while always
adhering to the local national standards
in place regarding potable water.
Then connect the inlet of the water filter/
softener (if present) to the drinking water
supply using one of the supplied stainless
steel braided hoses. Before connecting
the filter to the water pump, flush the
water supply line and the filtration
system in order to eliminate any residual
particles which could otherwise get stuck
in taps or valves thus preventing them
from working properly. Connect the
water supply connection of the espresso
machine to the water pump outlet
using one of the supplied stainless steel
braided hoses. Then connect the water
pump inlet to the water filter/softener
outlet (if present).
Note: The water pump is a differential
pressure volumetric pump and has been
designed to be used exclusively with cold
water. Make sure that water is always
present while the pump is operating,
otherwise air can be introduced into
the brew boiler causing an undesireable
condition and the pump can be damaged.
4) Electrical connections
a) Power supply cord
• This is the main power supply cable
that provides power to the entire
espresso machine. There are different
types of cable based upon the electrical
requirements of the espresso machine
purchased:
• 200/220VAC 1 Phase 3-core cable
with 4/6/10mm2 cross section or
AWG 12/10/8 for 2,3 4 group versions,
secured to espresso machine via a strain
relief connector
• 220VAC 3 Phase 4-core cable with 4
mm2 cross section for 2 , 3 and 4 group
versions, secured to espresso machine
via a strain relief connector
• 380 VAC 3 Phase 5-core cable with
2.5mm2 cross section for 2, 3 and 4 group
versions, secured to espresso machine
via a strain relief connector.
WARNING
WATER PRESSURE SUPPLY MUST BE
BETWEEN 4 AND 8 BAR
IF SUFFICIENT PRESSURE IS NOT AVAILABLE
WE SUGGEST THAT AN ADDITIONAL WATER
SUPPLY SYSTEM IS USED
cAutIoN
BEFORE MAKING ANY ELECTRICAL
CONNECTIONS MAKE SURE THAT THE TWO
STRAIN RELIEF CONNECTORS ARE FIRMLY
SECURED TO THE BODY OF THE MACHINE IN
ORDER TO PREVENT INADVERTENT STRESS
ON THE POWER CABLES.
WARNING
HAZARDOUS VOLTAGE DISCONNECT FROM
POWER SUPPLY BEFORE SERVICING.