Warning
The safety switch automatically turns off the power when the upper door of the Vallox ventilation unit is opened. Always disconnect the Vallox ventilation unit from the mains before starting maintenance.
Check the cleanliness of the fans when servicing the filters and the heat recovery cell. Clean the fans as required. Fans can be removed from the ventilation unit for cleaning.
Clean the fan blades with compressed air (wear protective goggles) or by brushing them gently. Do not remove or move the fan blade balancing weights.