13
GB
3. Function
!
Water intake
Universal connection for the pump supply hose in the pond.
"
UVC-radiation
The pond water, which has already undergone preliminary
treatment, is subjected to short wave UVC-light (ultraviolet rays).
During this process, the algal growth is reduced and germs which
cause disease in fish ponds are killed.
§
Mechanical filtering
Dirt in the pond water is retained mechanically by the large outer
surface of the foam components in the filter.
$
Biological treatment
The biological pond water treatment takes place in two different
areas of the filter:
•
Blue filter sponge / bio-surface elements :
This promotes the growth of micro-organisms which guarantee
the conversion of ammonia into nitrate via nitrite (nitrification).
•
Black filter sponge / lava stone :
This supports the growth of anaerobic micro-organisms which
promote denitrication (reduction of nitrate to nitrogen).
%
Water outlet
Connection nipple (1 1/4
”
) to enable the treated water to be
returned.
4. Assembly
1. Turn UVC unit head
1
of the UVC unit
2
anti-clockwise
1
and
remove carefully
2
(bayonet fitting). (see 7. Trouble-Shooting
“ Changing the bulb”
).
2. Push the two bolts
3
into the guides on the UVC unit
2
and
place on the filter cover
4
.
3. From underneath, screw one washer
5
and one nut
6
respec-
tively on to the bolts
3
and screw the UVC unit
2
firmly on to
the filter cover
4
.
4. Screw one universal connection nipple
0
with O-ring
9
on the
UVC-intake
7
und UVC-outlet
8
respectively.
5. Insert water outlet (1 1/4
”
)
A
from outside into the drilled hole,
push the large seal
C
onto the water outlet
A
from inside and
screw the large angled piece
B
on the water outlet
A
(the
large angled piece
B
must point upwards).
6. Push small seal
E
on to the water intake (3/4
”
)
D
, push it into
the drilled hole and screw the small angled piece
F
on to the
water intake
D
(the seal
E
sits on the outside on the filter
housing
K
and the angled piece
F
must point downwards).
7. Place coarse filter sponge (blue)
G
and fine filter sponge
(grey)
H
in the centre of the filter as illustrated.
8. Insert the lava stone
I
on the intake side and the flat bio-
elements
J
on the outlet side.
9. Press filter cover
4
with UVC unit
2
on to the filter housing
K
.
Assembling the UVC filter :
%
§
$
"
!
1 0 9 7
3
3
5
4
B
C
A
J H
G I
K
6
2 8
9 0
L
D
E
F
