GB
GB
1. Installation
It is necessary during installation to observe codes of good practice, to comply with local requirements and to follow the installation instructions. The installation location should be protected against frost and be easily accessible. Isolating valves should be fitted on both sides of the filter.
1.1 Assembly
1. | Flush pipework thoroughly. |
2. | Install filter: |
| ● With correct flow direction as |
| indicated by arrow |
| ● In horizontal pipework with filter bowl |
2. Reverse Rinsing
An inlet pressure of at least 1.5 bar is required for reverse rinsing. The reverse rinsing interval is dependent on the degree of contamination of the water. 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
2.3Differential 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. It actuates a reverse rinsing cycle when the pressure differential between the inlet and outlet of the filter reaches a predetermined value. If the pressure difference exceeds the preset value, then the Z 11 AS reverse rinsing actuator is operated via its
5.Safety Guidelines
1.Use the appliance
●In good condition
●According to regulations
●With due regard to safety
2.Follow installation instructions
3.Immediately rectify any malfunctions which may influence safety.
4.F 76
downwards |
●Free of bending or twisting stress
3. Seal in pressure gauge connection
4. The filter is now ready for use.
1.2 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.Direct connection to drainage pipework A DN 40/100 reducing connector and required DN 100 tundish and pipe (maximum three 90° bends).
2.Free discharge into existing floor drain.
Filter size | Reverse rinsing quantity* |
|
|
DN 65 - 100 | 150 litres |
|
|
*at 4.0 bar inlet pressure and a rinse duration of 25 seconds
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.
2.2Automatic Reverse Rinsing with the Z 11 AS
The Z 11 AS automatic reverse rinsing actuator is available as an accessory. It automatically and reliably actuates reverse rinsing cycles at any preset interval between four minutes and three months.
3. Maintenance
Planned maintenance is recommended and DIN 1988, Part 8 specifies the following operations:
●The filter must be cleaned regularly by reverse rinsing and at intervals of no longer than two months.
-This operation can be carried out by the user.
●Filter can become blocked if this is not done, resulting in pressure drop and falling flow rate
●The filter sieves are stainless steel. Red rust deposits from the pipework have no effect on function and filter operation.
4.Scope of Application
Connection sizes | DN 65 - 100 |
Medium | Water up to max. 70 °C |
Operating |
|
pressure | max 16.0 bar |
4 | 5 |
