Velda Silenta Aerating Set Mode D'emploi page 6

important source of oxygen is also lost when you remove algae. The solution is to
aerate the pond. When the pond freezes in winter, fish can often die as a result of
suffocation, particularly in small shallow ponds. However, you should never chop a
hole in the ice because the vibrations will harm your fish. Aeration of the water is a
better solution. The air bubbles keep the pond ice-free and the water rich in oxygen.
INSTRUCTIONS
Use the air hose to connect the pump outlet to the air stone that hangs in the pond.
Install the check valve between the hose parts at a distance of ca. 50 cm from the air
pump to prevent any water condensation or moisture. The arrow indicates the
direction of the airflow. The air hose can be dug in, however, you should avoid to
reduce the air flow. Using air dividers and taps the aeration can be extended for an
optimal distribution of the air bubbles through the pond. Order additional air stones,
hoses, connection pieces and membranes online at www.pondproducts.shop or ask
your local dealer. Place the air pump in a dry place (e.g. in a garage) and prevent the
plug and socket form getting moist. Please provide a good quality grounded con-
nection to the electric mains and use an earth leakage circuit breaker rated 30 mA.
If the pump or cable should become damaged, the pump may no longer be used.
MAINTENANCE
In order to remain durability and air yield of the air pump, it is advisable to replace the
membrane every year. This brings back a reduced air yield to the original level. Visit
www.pondproducts.shop for a repair set (article no. 125216) or ask your local dealer.
Membrane, membrane housing and air filter replacement at Silenta 300
l Switch off the power supply and remove the hose.
l Remove the 4 screws that can be found on the underside.
l Remove the 2 screws on the outside and the nut on the inside,
so that the inside, including the membrane can be removed.
l Now you can mount the new membrane, including housing, in reverse order.
l Replace the air filter at the bottom of the pump.
Membrane, membrane housing and air filter replacement at Silenta 500 Pro
l Switch off the power supply and remove the hose.
l Remove the screw and turn off the top.
l Remove the 4 screws on the back of the membrane and the nut,
so that the membrane can be removed.
l Now you can mount the new membrane, including housing, in reverse order.
l Replace the air filter at the bottom of the pump.
GUARANTEE
Except the membrane and air filter, Velda guarantees the correct functioning of
this apparatus for a period of 24 months after purchase. The warranty expires in case
of repairs, changes or additions to this product that are performed by others than
the manufacturer. If a claim to guarantee can be laid, a dated receipt should be
presented. Visit www.velda.com/service for the warranty procedure and terms.