Stop Functions; Safety Devices - LAVAZZA LB 4712 Maintenance Manual

adjustments, specifications and illustrations in this ma-
nual are based on information available at the moment
of the editing and therefore can change anytime. These
modifications affect maintenance operations to be car-
ried out. ensure that the updated version of the present
manual is being used.
Power connection must be made in compliance with the
ceI en 60335-1 and local safety standards in force.
The electric socket connecting the machine must:
- conform with the type of plug installed on the machine,
if it is present;
- be sized in order to comply with the data provided on
the plate on the bottom of the appliance;
- be connected to ground system, efficient and in accor-
dance with the law.
Before carrying out any operation on the machine en-
sure that the plug is disconnected from the current and
that the machine is cool.
In order to avoid any electric shocks, electrical parts and
surrounding components must not :
- enter into contact with any type of liquid;
- be manipulated by humid or wet hands;
- be tampered with.
It is forbidden:
- to use the machine near flammable substances and/or
explosives and/or in an atmosphere with any risk of
fire;
- to use unoriginal spare parts (not advised by the ma-
nufacturer);
- to carry out any type of technical modification not co-
vered in the normal procedures of diagnosis and re-
pair.
In case of fire, use carbon dioxide (co
do not use water or powder extinguishers.
If an operation or intervention not foreseen should be
carried out, following a different procedure than that in-
dicated in the manual, please contact lavazza technical
service before starting.
Structural damage, modifications, tampering, alterations
or improper repairs could compromise the safety of the
machine.

2.1. Stop functions

To stop the machine, turn the main switch to "0" (oFF).
6

2.2. Safety devices

The machine/s described in this publication, are desi-
gned in compliance with the specific standards in force
(ceI en 60335-1) and therefore have measures of pro-
tection in all the potentially hazardous parts.
A thermal protector avoids any overheating of the boi-
ler.
The pipe for steam dispensing is provided with rubber
protectors so that it can be grasped and oriented even
when hot.
Thermostat
The thermostat allows electric heating damage to be
prevented when there is no water in the boiler. The ther-
mostat bulb (1) is located inside a sheath (2) which is si-
tuated in the middle of the heating elements. The
thermostat contacts (3) are connected to the electric
heating element (4). If the heating element is not im-
mersed in water due to a fault in the boiler water filling
system, its temperature increases considerably. at this
point the thermostat cuts off power to the heating ele-
ment in such a way as to prevent any damage.
5
) extinguishers.
2
Press the central key (5), to reset the thermostat. Be-
fore restarting the machine, verify the causes of the
failure of the boiler water filling system.
Anti-flooding device
The cover installed on the pressure relief valve allows
collection of water which may leak from the boiler due
to a machine malfunction and carries it, by means of the
special pipe, to the drain cup.
Maintenance manual for technical assistance
4
1
3
Attention
Manual code 10066846 / Rel. 0.00 / March 2012
2