24
Operation and maintenance manual, Discfilter HSF2200-1/2F PFC
7. MAINTENANCE/SERVICE
7.1 Backwash system
Clogged nozzles can result in operating disruptions in the backwash system. Clogging is caused
by particles in the wash water and/or by e.g. biological fouling in the pipe system.
The filter is equipped with self-cleaning nozzles which, under normal conditions, do not require
maintenance. The nozzles are accessible when the backwash pipe is extended, see below:
7.1.1 Servicing nozzles
1. Turn the operating mode switch to 0 (OFF).
2. Open the cover on the side where the backwash pipe is located.
3. Fold out the backwash ramp with the loose lever (see Figure 7.1).
4. Once servicing is completed, place the backwash ramp in its original position with the help of
the lever.
5. Close and lock the cover.
6. Start operation again by turning the operating mode switch to position AUTO.
Figure 7.1 Place the loose lever in the bracket.
Figure 7.2 Place the loose lever in the bracket.
