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- End-of-defrosting thermostat (KFS) (5): it controls the evaporator maximum temperature
during defrosting and governs the internal fan delayed-action function. Its working is automatic
and cannot be adjusted by the user.
- EMC filter (FRF) (22): suppresses electromagnetic interferences emitted by the electrically
networked machine.
- Inner lamps (L2) (34): permit the product illumination.
- Inner lamps ballasts (AT2) (60): performs the function of generating the necessary current
to operate the neon inner tubes.
- Inner lamp Starters (S2) (73): performs the function of striking the electric discharge in
the lamps gas.
- Display lamp (L1) (33): permits the display illumination.
- Display lamp ballast (AT1) (59): it performs the function of generating the current necessary
to operate the neon tube.
- Display lamp Starter (S1) (73): performs the function of striking the electric discharge in
the lamps gas.
- Isolation transformer (TI) (82): performs the function to electrically insulate those
component parts that cannot be protected by the earth circuit; it powers the heated glass
surface (RV) and the door frame heater (RT) (64).
Signaling devices
- Analogue thermometer (79): located on the controls panel (18), shows the temperature
value inside the refrigerator, both in Celsius and Fahrenheit degrees.
- Defrosting led (LS) (32): it lights on when the defrosting phase is activated; it is red-
coloured; it is red-colored and housed inside the lights switch on the controls panel (18).
- Voltage led: it warns on the presence of voltage in the system; it is green-colored and
housed inside the main switch (IG) (31), located on the controls panel (18)
1.3.3 LIGHTING SYSTEM
The refrigerator is equipped with a lighting system including two T8 26 mm 36 W neon
tubes (L2) (34), located inside the tank, and one T5 16 mm 13 W neon tube (L1) (33),
located inside the display. The neon tubes are controlled by a push-button switch (IL) (32)
positioned on the front panel (18). This push-button switch permits to switch on and off the
inner lamps and the display lamp contemporary. The neon tubes are powered by two standard
electromagnetic 36W ballasts (AT2) (60) and the display lamp is powered by one 13W ballast
(AT1) (59), that work with a 120 V input voltage and generate a 230 V output voltage: therefore
the starters, whose function is to strike an electric discharge in the lamps gas, must have a
230V rated voltage. The 3 ballasts and the inner lamps starters are located in the rear devices
support; the display lamp starter is located behind the lamp, in the display compartment.
1.3.4 DOOR ANTICONDENSING SYSTEM
Two heating elements are located on the door: one, consisting of a wire-wound resistor
(RT) (64), heats the door frame, while the other is made of a conductor film (RV) distributed
on the internal surface of the external layer of the multiple flat glass. The resistors are
connected in parallel by means of a multiple cable joint, going out through the lower door
hinge.
The two heating elements are powered by an isolation transformer (TI) (82), protecting
them from the risk of electric shocks due to possible malfunctions.
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