13
TECHNICAL
MAINTENANCE
The technical maintenance includes periodic filter replacement and cleaning of surfaces from
accumulations of dust and dirt.
The impeller wheels require thorough cleaning every 6 months.
The filter must be replaced when dirty, but at least once every 6 months.
To replace the filter:
Disconnect the fan from the power mains (Fig. 72);
Remove the filter by following steps 1.2-1.3 or 2.2.-2.4. listed in the Fan Installation section;
Replace the filter and then reverse the installation steps to re-assemble the unit.
Connect the fan to the mains (Fig. 75).
To clean the fan surfaces from dust and dirt:
Disconnect the fan from the power mains (Fig. 72);
Remove the cover by performing operations 1.2.-1.3. or 2.2.-2.4. as listed in the Fan Installation
section;
Remove the scroll fastening screws, depress the latches and remove the scroll (Fig. 73);
Rotate the scroll 180° to access the turbine and remove the dust using a soft brush or compressed
air stream (Fig. 74);
Re-assemble the fan in the reverse order and connect it to the power mains (Fig. 75).
The unit can be carried in the original packing by any mode of transport without limitation.
The unit must be stored in the original packing at ambient air temperatures from +5 °C to
+40 °C at relative air humidity not more than 80%.
The storage premises must be free from dust and corrosive acid or alkaline vapours.
TRANSPORTATION
AND STORAGE
REGULATIONS
MANUFACTURER'S
WARRANTY
The fan is manufactured at the production facility of Private Joint-Stock Company
"Ventilation Systems" (hereinafter "Manufacturer").
By purchasing the product the buyer accepts the terms and regulations specific to operation,
storage, transportation, installation, setup, connection, maintenance, repair and warranty
coverage of the unit as listed in the accompanying documents provided by the Manufacturer.
VNVN
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