Care And Maintenance - Dennerle Einweg 300 Space Notice D'emploi

5 Care and maintenance

5.1 Replace the CO cylinder
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• The pressure reducer can be unscrewed again at any time – the
cylinder valve closes automatically.
• Screw pressure reducer onto new disposable CO
The bubble count setting will be retained.
• Unscrew the pressure reducer when the cylinder is to remain out
of use for a prolonged period.
5.2 Testing the CO backflow check valve
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The check valve protects your valuable pressure reducer from corro-
sion caused by back-flowing water. As dirt particles may collect on the
sealing surfaces over the course of time, the backflow check valve
should be checked at least once a year and replaced every 2-3 years
for safety's sake.
Tip: Install a transparent test hose temporarily between backflow
check valve and pressure reducer and shut down the CO
24 hours (close pressure reducer/solenoid valve). If there is water in
the test hose after this 24-hour period, this indicates a leak on the
backflow check valve.
The opening of the check valve can only be tested with CO
nimum pressure of approx. 0.3 bar is required to open the valve. It is
not possible to "blow through" the valve with your mouth.
Important note: Use only check valves designed for use with CO
as the special CO check valve from Dennerle. Standard air check
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valves may become brittle through contact with CO
space of time, resulting in leaks.
Corrosion damage on the pressure reducer/solenoid valve
as a result of water entering into the device is excluded
from the guarantee coverage.
5.3 Replacing the washer in the pressure reducer
• There is a Longlife washer in the adapter for disposable cylin-
ders. It is not normally necessary to replace this washer during
the service life of the pressure reducer. In case of damage, the
entire adapter (art. no. 2997) must be replaced.
• If necessary, the washer (art. no. 3035) in the pressure reducer
can be levered out carefully with the aid of a small screwdriver,
which should have no sharp edges (!) IMPORTANT: Be careful not
to damage the sealing surfaces! ©
5.4 Cleaning and recalibrating the needle valve
There is a factory-calibrated needle valve in the hose connector of the
pressure reducer.
Should no CO be supplied although the cylinder is full and the setting
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knob is turned to fully open position, this indicates that the needle valve
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cylinder (see 2.1).
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supply for
2
, as a mi-
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, such
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within only a short
2
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is probably blocked. In this case:
• Open the valve by turning by one half-turn in anti-clockwise direction
using a fine screwdriver (blade format 2 – 2.5 x 0.5 mm), then
"flush" with CO for a few seconds with the setting knob in fully
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open position.
Important: Do not unscrew valve completely! ©
• Close valve again by one half-turn.
• The valve is factory-set to approx. 120 bubbles per minute when
the setting knob is in fully open position. If necessary, it can be
recalibrated by carefully screwing it in or out in steps of approx.
1/8 of a turn.
5.5 Removing the CO hose
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After prolonged service, the CO
the connector of the pressure reducer and other CO
remove the hose, it is best to lever it off using a small screwdriver. Do
not pull the hose off by force or cut it open with a knife, as this may
cause damage to the hose connectors! ©
5.6 Clean CO Flipper
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collector by pulling straight up. ©
• Remove CO
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• Place the Flipper flat in your hand so that the suction clips are
pointing to the right. Slide front side panel of the Flipper upwards
by approx. 2 cm. ©
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Fold out side panel. ©
•
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hose, do not pull out. ©
• Take out CO
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• Clean all parts with warm water and a soft sponge. Do not use
any cleaning agents.
• Re-assemble Mini-Flipper via the reverse procedure.
IMPORTANT: Insert CO
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located at the bottom stop.
5.7 How the CO Flipper works
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The Flipper is a modern, highly effective CO
most efficient possible use of the valuable CO
While CO bubbles rise slowly in the Flipper, the CO
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aquarium water. At the same time, other gases which are naturally
dissolved in the aquarium water penetrate into the CO
"waste gases" explain why the bubbles do not dissolve completely,
despite becoming smaller as they rise in the aquarium water. ©
The waste gases are substantially lighter than the relatively heavy CO
and thus accumulate in the CO
discharged regularly via the special waste gas vent.
The running-in period for the Flipper is approx. 2 days.
Initially, the individual CO bubbles combine to form larger bubbles.
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As soon as a biological surface layer of microorganisms has formed,
the bubbles rise up to the collector.
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hose may be very firmly attached to
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equipment. To
2
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hose in the side panel so that the end is
diffusor which ensures the
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fertilizer.
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dissolves in the
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bubbles. These
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collector at the top. Here they are
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2