User manual HONEYWELL F76 S-F

[. . . ] 3 Differential pressure controlled reverse rinsing with the DDS 76 and Z 11 AS Also available as an accessory is the DDS 76 differential pressure switch. It provides fully automatic operation of the reverse rinsing which is controlled by the differential pressure across the filter. [. . . ] 2 Reverse Rinsing Water Drainage The reverse rinsing water must be piped to the drain in such a way that no back pressure can occur. To ensure this, there are two possibilities: 1. Free discharge into existing floor drain. DIN 1988, Part 8 requires that the reverse rinsing interval shall be no longer than every two months. to ensure that convenient and regular reverse rinsing takes place , it is recommended that a Z 11 AS automatic reverse rinsing actuator be fitted. Water can still be drawn during the reverse rinsing cycle 2. 1 Manual Reverse Rinsing Reverse rinsing is semi automatic if the ball valve 1 is opened. Opening and closing of the valve should be gradual and not sudden. If reverse rinsing is carried out at the recommended intervals, then a rinsing duration of between 10 and 20 seconds will be sufficient. If the filter is particularly dirty, then a longer reverse rinsing period may be necessary. It automatically and reliably actuates reverse rinsing cycles at any preset interval between four minutes and three months. Use the appliance q In good condition q According to regulations q With due regard to safety 2. [. . . ] Q Filter can become blocked if this is not done, resulting in pressure drop and falling flow rate q The filter sieves are stainless steel. 0 bar inlet pressure and a rinse duration of 25 seconds [. . . ]