Gardena 7904, 7905 Operating Instructions Manual

GARDENA

®

D Gebrauchsanweisung

Teichfilter / Teichfilter mit UVC-Licht

GB Operating Instructions

Pond Filter / Pond Filter with UVC light

F Mode d’emploi

Filtre de bassin / Filtre de bassin avec lampe UV-C

NL Gebruiksaanwijzing

Vijverfilter / Vijverfilter met UVC-lamp

S Bruksanvisning

Dammfilter / Dammfilter med UVC-ljus

I Istruzioni per l’uso

Filtro per laghetti / Filtro per laghetti con lampada a raggi UVC

E Manual de instrucciones

Filtro para estanques / Filtro para estanques con luz UVC

DK Brugsanvisning

Bassinfilter / Bassinfilter med UVC-lys

Art. 7904
Art. 7905 (UVC)

13

G

GARDENA Pond Filter /
Pond Filter with UVC light

Welcome to GARDENA aquamotion ...

Please read these operating instructions carefully and observe
the notes given.
Use the instructions to familiarise yourself with the equipment,
the operating controls, their correct use, and the notes on safety.

A For safety reasons, children under 16 as well as persons

not familiar with these operating instructions should not use this
Pond Filter.

Keep these operating instructions in a safe place.

Application Range of Your Filter

The GARDENA Pond Filter and the GARDENA UVC Pond Filter
have been designed for domestic outdoor use around your home
and garden for the sole purpose of cleaning garden ponds with
or without fish stock.

A The Pond Filter must not be used for industrial applications

and in conjunction with chemicals, food, flammable and explo­sive substances.

Intended purpose

Attention

A For Your Safety

UVC light:
Caution! Ultraviolet radiation.
This radiation is harmful to eyes and skin.
➔ Never operate the lamp without its casing!

The UVC light should be operated using a residual current de­vice with a residual current rating of ≤ 30 mA (DIN VDE 0100­702 and 0100-738). Please consult a professional electrician.

If extension or connector cables or adapters are used, they
must be earthed.

Mains power cables should not have a smaller cross-section
than a rubber sheathed cable of the designation H05 RNF.
Extension cables must meet the requirements of DIN VDE 0620.

In Austria power cables should correspond to ÖVE-EM 42,
T 2 (2000) /1979 § 22 according to § 2022.1. According to this
standard units used in swimming pools and ponds should
only be operated via an isolating transformer. Please contact
your electrician.

Caution!
Protect eyes
from flash

Using the UVC light

Extension cables

Mains power cables

For Austria

15

G

14

G

In Switzerland mobile appliances which are used outdoors,
must be connected via a residual-current device.

Carry out a visual check before operating the device in order
to see whether the UVC light, in particular the mains power
cables and plugs have been damaged. A damaged lamp must
not be used. In case of damage please have the UVC light
tested either by our GARDENA Service Centre or by an autho­rised electrician.

Check line voltage. Data indicated on the type plate must match
technical data of the mains supply.

Position the Pond Filter in a firm and dry area, protected from
flooding, within a distance of at least 2 metres from the pond
(only for Pond Filter with UVC Light).The filter must be protected
from falling into the pond. Please consult a professional electri­cian.

.

Never operate the UVC light if water is not flowing through it.
First connect the power cable of the pump before operating
the UVC light.

.

If the power cable, the inspection window or the casing of the
UVC light seem to be faulty, the lamp must not be operated.

An integrated thermostat switches off the UVC light if it over­heats. The light is switched back on again once it has cooled
down.

Do not carry the UVC light by its cable, and do not use the
cable to disconnect the plug. Protect the cable from heat, oil
and sharp edges.

When the UVC light is out of operation or not in use or before
maintenance disconnect the plug!

Take care that the electrical connections are kept dry.

Make sure that the water outlet is always kept free of obstruc­tions and check it regularly.The filter must never be allowed
to overflow at any time (for example, due to the outlet being
blocked). In that case, the pond would be in danger of being
emptied!

➔ Make sure you clean the filter or the outlet regularly (see
paragraph on care instructions).

Please comply with local noise protection regulations.

For Switzerland

Visual check

Check line voltage

Positioning
the Pond Filter

Do not operate UVC light,
if ...

Thermostat

Do not carry the UVC light
by its cable

Disconnect the plug

Electrical connections

Keep water outlet free
of obstructions –
filter must not be allowed
to overflow

Comply with noise
protection regulations

1

Install the filter in
a position near your
pond.

2

Connect a hose to
the water inlet of the
pond filter and con­nect it with the pump
in the pond.

33

Connect a DN 70
sewage pipe to
the outlet of the
pond filter and run
it to your pond.
If your pump comes
with a UVC light,
fit the lamp.

44

Connect first the power
cable of the pump,
and if necessary the
UVC light, to a 230-V­AC socket.

Assembly of the UVC-light

Remove the filter cover 1. To do this, pull the side tabs outwards
and remove the cover. Insert the tube supplied 2into the centre
of the filter. Make sure it fits properly into middle of the recesses

4

.

Insert the UVC light socket 3into the centre opening so that the
mains cable fits into the recess in the cover.Insert and turn both
tommy screws 5one quarter turn.

Replace the filter cover 1.

Brief Operating Instructions

What You Should Know About Ponds and Filters

Garden ponds are not as deep as natural water features.The lack
of depth means that a garden pond heats up and cools down
much more quickly. These changes in temperature and environ­mental factors such as fertilisers, plant residues etc., are among
the main causes of excess levels of nutrients and hence of growth
of algae.

In garden ponds the density of fish stock per cubic meter is usually
higher than in natural ponds. As the fish usually also receive more
food than in their natural environment, the amount of pollution due
to excrement is very high.

Excess growth of algae, as well as the high level of pollution due
to fish excrement causes a lack of oxygen in your pond; its bio­logical balance has been disturbed.
➔ Problem: the level of nutrients in your pond is too high.
The most effective solution to this problem is to decrease the
level of nutrients available by means of a biological process and

Excess growth of algae –
murky pond

High density of fish stock

Decrease the level of
nutrients and increase
the oxygen supply