Dennerle Reusable 160 Primus / Special Edition, Operating Instructions Manual

Page: 18 / 35

14
1.6 CO
2
Flipper
Hose connector
CO
2
hose
Diffusion slots
CO
2
collector
Waste gas vent
Longlife suction clip
2 Set-up and connection
2.1 Connect the pressure reducer
• For Reusable 160 and 300: Place CO
2
cylinder in stand.
• Turn setting knob on the pressure reducer as far as it will go in di-
rection “- ” (CO
2
supply shut off).
• Connect pressure reducer to CO
2
cylinder. Ensure that the washer
is fitted correctly and that the sealing surfaces are clean! Tighten
coupling ring finger-tight with 27mm spanner.
2.2 Connect solenoid valve (Special Edition only)
• Cut a piece of approx. 50 cm in length from the CO
2
hose,
ensuring that the cut is straight.
• Connect the pressure reducer and solenoid valve with the hose.
IMPORTANT: The arrow on the solenoid valve must point in the
CO
2
flow direction!
• Slide each end of the hose as far as they will go onto the hose
connectors and fix with coupling rings.
Primus : Secure hose with clip (to open, push the ends of the clip
apart at the side).
• The solenoid valve can be secured on the base cabinet with the
aid of the holding bracket.
Connect the solenoid valve to the time switch. The time switch is
used to cut off the CO
2
supply at night, as plants do not consume
any CO
2
during the night. Tip : Simply connect the solenoid valve
and lighting to the same time switch.
Control states:
Power ON = solenoid valve open
Power OFF = solenoid valve closed
2.3 Fitting the check valve
• Cut a piece of approx. 10 cm in length from the CO
2
hose,
ensuring that the cut is straight.
• Connect the short hose to the entrance of the check valve, and the
long hose to the exit. Slide hoses as far as they will go onto the
hose connectors and fix with coupling rings.
IMPORTANT: The arrow on the check valve must point in the
CO
2
flow direction, i.e. from the CO
2
source to the diffusor (Flip-
per)!
• Connect the short hose to the pressure reducer or the
solenoid valve (for Special Edition) and secure with coupling ring.
Primus : Secure hose with clip (to open, push the ends of the clip
apart at the side).
2.4 Connect CO
2
flipper
• Rinse Flipper with warm tap water (no detergents!).
• Moisten the hose connector slightly and fit the CO
2
supply hose.
• Choose a spot in the aquarium which is as dark as possible (to
prevent algae growth) and where the water movement is good.
• Fix Flipper in vertical position, at least 5 cm below the surface of
the water.
Your CO
2
fertilizer system is now ready for use.
3 Setting the amount of CO
2
(number of bubbles)
3.1 The right amount of CO
2
For lush plant growth, Dennerle recommends a CO
2
level in the
aquarium of approx. 20 to 25 mg/l .
Levels of CO
2
above 30 mg/l are not necessary for healthy plant
growth and should be avoided, so as to ensure that fish and other
creatures living in the aquarium are not subjected to any unnecessary
stress. The CO
2
content can be determined by means of the CO
2
long-term test (see 4) or by measuring carbonate hardness and pH
value (see 4.7).
3.2 Setting the number of bubbles
The required number of bubbles is dependent on various factors, such
as the stock of plants, water movement and lighting intensity. The ap-
propriate CO
2
supply level thus requires to be determined individually
for the specific aquarium concerned.
Rule of thumb for the basic setting: Begin at approx.
10 bubbles per minute per 100 l of aquarium water, i.e. 2 x 10 = 20
bubbles per minute for a 200 l aquarium.
Adjust the CO
2
supply to the desired CO
2
content in small steps spread
over several days. Please note: The more vigorously the surface of
the water is set in motion, the more CO
2
will be expelled from the
aquarium again.
•
Slowly open the cylinder valve.
Quantum
: The cylinder pressure manometer will now indicate
approx. 60 bar (at 20 °C).
• Slowly turn the setting knob on the pressure reducer towards
“ + ”(approx. 1 complete turn) until the first bubbles issue from
the Flipper.
Special Edition : The solenoid valve must be open for this purpose.
• The desired number of bubbles can be set by turning the setting
knob to “ + ” or “ - ”.