Duplex STANDARD 340 Instrucciones Para El Uso Y Mantenimiento página 63

During use dirty water will be collected instantly inside the recovery tank which must be emptied
as soon as it fills up removing it from its seat (figure "1.13").
WARNING
The water tank for delivering the steam should never be empty. STEAM
PLUS model is equipped with a level gauge for water.
WARNING
The disposal of the dirty water must be carried out in compliance with the
regulations in force.
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DUPLEX 340-420-620