english -
13
R
espresso coffee machine - technician instructions
ATTENTION
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.
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
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
1) Connect the cable to the motor pump (with a smaller cross section) to the connector as shown in the diagram shown alongside.
2) Connect the machine power cable (with larger cross section) as set forth in the chapter "Electrical diagrams".
C
B
M
GV
B
M
GV
MP
C
Motor pump power cable
MP
Motor pump terminal
B
Blue
M
Brown
GV
Yellow-green
A
3.5 GAS CONNECTION (if included)
To perform the connection of the gas system follow the indications below:
• When operating on gas, the machine emits combustion fumes directly into
the surroundings where it is being used; therefore, gas-powered machines
must not be installed in rooms with a volume of less than 12 m
3
, as described
by the standards in use;
• Upstream from the machine, a cut-off cock must be installed
(A)
;
• Install a pressure reducer upstream from the gas system (
B)
;
• Pipe connections of the gas to the machine must be made in accordance
with current standards in the country of installation using either a flexible
or rigid hose.
A
B
