The backwash filters BOXER RDX are designed for the filtration of drinking water. The backwash filter BOXER RDX with pressure reducer in addition is suitable for adjusting the outlet pressure on the withdrawal side. The filters can be used for positive pressure and negative pressure applications. The adjustment of the outlet pressure on the withdrawal side, however, only works when applied in the positive pressure range. The backwash filters BOXER RDX are designed according to the stipulations of DIN EN 13443-1 and DIN 19628 and are intended for installation into drinking water pipes according to DIN EN 806-2 (installation immediately downstream of the water meter).
They protect the water pipes and connected water-carrying system parts from disturbances and corrosion damage due to undissolved impurities (particles), such as rust particles, sand, etc. The unfiltered drinking water flows into the filter from the inlet side and then from the outside in through the filter element and to the pure water outlet. Thus, foreign particles of > 100 μm in size are retained.
Depending on their size and weight, the foreign particles either stick to the filter element or they fall straight down into the filter cylinder.
The drain is opened by turning the backwash handwheel as far as it will go, and a backwash process is started. The water flows through the primary screen to the filter element and then flows through the filter element in reverse direction of standard filtration. Particles sticking to the filter element are detached and washed out to the drain.
We recommend performing a backwash every two months. In case of backwash filter BOXER RDX with pressure reducer, the outlet pressure on the withdrawal side can, in addition, be set to 1 – 6 bar (factury setting 4 bar) by means of the flow-optimised pressure reducer designed according to DIN EN 1567.
Observe local installation directives, general guidelines and technical specifications.
The installation site must be frost-proof and ensure the filter's protection from chemicals, dyes, solvents, vapours and direct sunlight.
The installation site must be easily accessible for maintenance purposes.