Pouring In The Filter Material - Behncke BUHNE 2 Betriebsanleitung

Filter tank BÜHNE² / Installation and first start-up

5.5 Pouring in the filter material

•
Remove the tank lid (2) and side service hatch (5.2); to do this, loosen the nuts (4.1 and 5.4),
and remove the lid and the O rings (3 and 5.1).
•
Mount the individually packaged manometer (1.3) as shown on the exploded view
(see Technical illustrations index) and screw it pressure-tight to the lid.
•
Remove the water funnel (7). Then check the inside of the filter to make sure that it is
complete and to check for possible transport damage. Check that the nozzle pipes (12) and
ventilation pipe (9) fit properly in the distributor head (11).
•
Cover the top pipe opening (7) and the vent pipe (9) with a cloth / plastic bag.
•
Pour in water up to a height of approx. 15 cm. Then carefully pour in the filter material until
just before the service hatch. When inserting the filter material, make sure to pour in the
coarse filter material grains first, and then the fine grain. Level the filter bed surface after
inserting each type of grain. (Required filter material, see chapter 3.2)
•
Then clean the sealing surface of the side tank opening as well as the sealing surface of the
side service cover and the O ring. After cleaning, insert the O ring in the side service cover,
then put on the cover (5.2) and tighten the nuts (5.4) diagonally. (max. 6 Nm)
•
The missing filter material can now be poured in through the upper service hatch.
Level the filter bed surface after inserting each type of grain.
(See chapter 3.2 for the filter material needed)
•
After pouring in the filter material, remove the cloth or plastic bag and screw the water
funnel (7) back on. Make sure that the water distributor is in the centre of the tank.
•
Clean the sealing surface on the top tank opening. Also clean the sealing surface of the
tank lid (2) and the O ring (3). Insert the O ring into the tank lid (2). Then put the service
cover on in such a way that the manometer (1.3) is clearly visible/readable.
•
Attach the screws (4.1) and tighten diagonally (max. 6 Nm).
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NOTE
Filter sand must not be used mixed with AFM!
NOTE
Before the filter is put into operation, the filter material must be sufficiently
backwashed (min. 4 minutes) to rinse out any fine grain present