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3.4
Wiring
It is necessary to link a safety main
switch (A) on the electric panel, as
required by standard regulations.
Machine with INTERNAL MOTOR PUMP
In case of internal motor pump connect the power
cable as set forth in the chapter "Electrical diagrams" (the
cable has a cross-section and number of wires based on
the power and voltage of the machine).
Machine with EXTERNAL MOTOR PUMP
In case of external motor pump, proceed as follows:
1.
Connect the motor pump cable (with smaller cross
section) to the connector of the external motor as
shown in the diagram below.
2.
Connect the machine power cable (with larger
cross section) as set forth in the "Wiring diagrams"
chapter.
B
C
M
GV
C
Motor pump power cable
MP Motor pump terminal
B
Blue
M
Brown
GV Yellow-green
Always connect the motor pump cable before the
machine power supply cable, in accordance with
!
the diagram provided. Failure to comply with
the instructions given above may cause serious
damage to the machine and/or motor pump
and will invalidate the warranty. Carry out the
electrical connections only when the machine is
disconnected from the power supply.
Technical manual
A
MP
B
M
GV
3.5
External motor pump adjustment
To adjust operating pressure proceed as follows:
• Operate a coffee delivery switch;
• adjust the pressure by turning the screw located on
the pump (1) so as to
obtain a value between
8 and 9 bar: tightening
the screw increases
the pressure, and loos-
ening it reduces the
pressure. Check the
pressure on the display
(
) ;
• turn off the delivery
switch;
3.6
Machine tune-up
When installation is complete, the appliance has to be
started, brought to the nominal working condition and
left for 30 minutes in the "ready to operate" condition.
Afterwards, the appliance has to be turned off and
emptied of the first water introduced in the whole
hydraulic circuit, to eliminate possible initial impurities.
Then, the appliance must be once again loaded and
brought to the nominal working conditions.
After reaching the "ready to operate" condition, the
following has to be performed:
1.
for each coffee unit, carry out a continuous delivery,
in order to release the whole volume of water
contained in each associated coffee tank;
2.
release the entire volume of the hot water from the
boiler by continuous delivery through the specific
spout. In the case of several dispensing points,
divide the volume on the base of the number of
the dispensing points;
3.
continuously release steam for at least 1 minute for
each steam dispensing point.
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