Nilfisk-Advance America GB 1133 instruction manual Monitoring the airflow, Extractors

10 Monitoring the airflow

All Nilfisk vacuum cleaners - except category of application “U“ - are fitted with a manometer that allows you to monitor the minimum airflow in order to guarantee an optimal air speed within the suction hose. When you lift the floor nozzle into the air and the manometer’s pointer turns from the green into the red zone, the main filter needs to be cleaned or the dust bag

is full and needs to be replaced.

Extractors

When the cutoff point is reached, the dust-producing system is switched off automatically and the red warning light flashes up. Clean the main filter or replace the dust bag.

The fill level of the dust bag/dust collecting container has to be checked at regular intervals. Monitoring the fill level/automatic gear change (extractors) is no guarantee that the bag is not full.