5. SAFETY DEVICES
Shearing-prevention safety device: Implemented by means of a safety circuit compliant
with European standards; it intervenes by blocking the beater motor when the tank cover is
opened.
Beater motor overheating safety device: Realised via amperometric protection supplied
by the inverter. If the beater motor should over-heat, the inverter module sends the relative
alarm message to the display.
Hermetic compressor motor overheating safety device: Implemented by means of an
automatic reset thermal-current sensor; it protects the machine compressor motor
operation from overloads. The protection device intervention determines the temporary
stop of the compressor motor only.
Heat elements safety device: implemented by means of safety thermostat; it protects the
heat element from overheating, by signalling the relative “Alarm!” message on the display,
emitting an intermittent acoustic signal and allowing restore directly from the push button
control panel.
Chiller circuit over-pressure safety device: implemented by the approved automatic-
restoration safety pressure switch; it protects the integrity of the chiller circuit from
overpressure.
Protection against short circuit of auxiliary utilities: Implemented by fuses which
intervene on the logic unit or auxiliary power supply in the event of short-circuits.
SELV safety circuit: the push button control panel and the water bath fluid levels are
powered at low voltage by means of an approved dual-insulation safety transformer,
protected against short circuits by fuses.
Water bath fluid level safety device: implemented by a conductivity probe inside the tank
which signals “Alarm!” on the display and coupled with an intermittent acoustic signal if
the fluid level is insufficient.
LCD panel auto-switch-off: During the Stand-by and 4°C STORAGE phase, the LCD
panel turns off to save energy a few minutes after the last button was pressed. Press any
key to reactivate the LCD panel.
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