Electrolux ZX57/3W Manuale di servizio - Pagina 15

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Electrolux ZX57/3W Manuale di servizio

5.2 DEFROSTING

The ice on the battery must be removed regularly, therefore after about 14 hours of operating, the timer (25)
switches from contact 3-4 to contact 3-2, disconnecting the compressor and the fan and switching on the stylus
defrosting heater (9) and armoured (9a).
For safety reasons and rules in the evaporator battery there are two defrosting heaters that are simultaneously
powered, since they are connected in parallel.
After 36 minutes defrosting, the timer switches to contact 3-4 again, switching on the compressor and the fan
and disconnecting the heating elements.
If the battery temperature reaches +10°C in less than 36 minutes, the heaters are switched off by the defrosting
cut-out switch (26). If, for any reason, it does not switch on and the battery temperature reaches +40°C the
heating elements will be switched off by the safety thermal switch (27).
The arrows in the picture show the current path.
NOFROST REFRIGERATORS WITH EXTERNAL ELECTRIC WIRING
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