Electrical Connection; Start-Up; Charging The Water In The Boiler; Heating The Water In The Boiler - SM Duale Class Manuel D'instructions

4.7 Electrical connection

Instructions for a proper electrical connection of the espresso coffee machine:
• Before connecting the unit to the electrical mains, make sure that the data on the data
plate corresponds to the electrical mains.
• The tag is located on the left side of the machine (and can be accessed by removing the
lower tray).
• The electrical system provided by the client must comply with current standards. The
power socket must be equipped with a working earth connection. LA SAN MARCO
SPA will not in any way be held liable if legal requirements are not met. An improper in-
stallation can cause injury or damage for which the manufacturer cannot be held liable.
• For the electrical connection, it is necessary to install an omnipolar main switch upstre-
am of the power supply; this switch should be rated according to the electrical cha-
racteristics (power and voltage) shown on the rating tag. The omnipolar switch must
disconnect the power supply with a contact gap of at least 3 mm.
• If it is necessary to use adapters, multiple plugs and extensions, only products meeting
applicable safety standards must be used.
• To avoid any overheating of the power cable, unwind it completely.
Connect the power cord to the electrical mains as shown in the attached diagram:
N
DUALE
L
NOTE:
* The power absorbed
by the electric
heating elements
L
can be reduced to
2/3 by joining the
L
BLACk wire with the
L
GRAy one.

5. start-up

• The coffee machine must be started by qualified technical personnel approved by La
San Marco.
• Once the electric and hydraulic connections are completed, the user is urged to start
the espresso coffee machine with the following procedure in order to avoid damaging
the appliance.

5.1 Charging the water in the boiler

1) Check that the machine main switch 1 (figure 1) is in position 0 (zero).
2) Remove the tray and the cup support grill and make sure that:
a) The boilerdrain valve 21 is closed.
b) The taps of automatic level valve 22-24 must be open.
Open the water supply on-off valve 33.
3)
4) Open a steaming tap 5 to allow the exit of the air in the boiler filling phase.
5) Reinstall the tray and cup support grill in its place.
6) Press and hold down the button 10 until the sight glass 20 is ¾ full.

5.2 Heating the water in the boiler

1) Rotate the main switch to position 2.
V-3N THREE-PHASE
230V MONO-PHASE* 400
N
BLUE BLUE
L
GREy GREy
3
L
BLACk BLACk
2
L
BROWN BROWN
1
yE / GR yE / GR
230V-3 THREE-PHASE
BLUE
3
GREy
BLACk
2
BROWN
1
yE / GR
3 HEATING ELEMENTS
BLUE
GREy
BLACk
BROWN
yE / GR
3 HEATING ELEMENTS
BLUE
GREy
BROWN
BLACk
yE / GR
27