hajdu HB300C Manuel De Mise En Service, D'opération Et D'entretien page 90

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Filter installation to the air inlet of the appliance. If the appliance is connected to air
duct, a filter must be mounted to the air inlet of the air duct.
Air outlet
Figure 7.2.-7.
Figure 7.2.-8.
Drain
Air inlet
Filter
Filter
The filter must be mounted by the
user of the appliance, the mesh size
is about 1.2mm.