Frigomat FR260 Manuel D'instruction Et De Maintenance page 51

5. SAFETY DEVICES
Shearing-prevention safety device: Implemented by means of a safety circuit compliant
with UL 621 standards, it intervenes when the door is opened and/or when the safety grid
on the hopper is lifted, temporarily switching the machine to STOP mode.
Beater motor overheating safety device: Implemented by means of a thermal relay; it
protects the machine beater motor operation from overloads, by signalling the relative
alarm message on the display, emitting an intermittent acoustic signal and enabling to
reset directly from the push button control panel.
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.
Refrigeration 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 in the event of short-circuits.
SELV safety circuit: the push button control panel is powered at low voltage by means of
an approved dual-insulation safety transformer, protected against short circuits by fuses.
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