Dennerle Classic-Line CO2 Exclusive Mode D'emploi page 7

number of bubbles should thus be set with due care.
• Check the number of bubbles regularly in the first few days, correc-
ting as necessary. After this initial period it is generally sufficient to
check the number of bubbles once a week.
Care and maintenance
7. Replacing the CO cylinder
2
• Close cylinder valve.
• Let off any residual pressure in the Pressure Reducer by opening the
needle valve. Close needle valve. Caution: Tighten only gently!
• Unscrew pressure reducer from CO cylinder and screw onto refilled
2
reusable CO cylinder. Reset number of bubbles.
2
Special information: The needle valve is intended only for fine adjust-
ment of the number of bubbles. Always close the cylinder valve in order
to shut down the CO supply for a prolonged period! Unscrew the pres-
2
sure reducer when the cylinder is to remain out of use for a prolonged
period.
8. Adjusting the operating pressure
of the Pressure Reducer
The operating pressure of the Exclusive Pressure Reducer is factory-set
to approx. 1 bar. In the first weeks of operation in particular, the ope-
rating pressure may alter slightly as a result of the washers working
loose. Adjusting the operating pressure.
• Remove protective cap
8
• To increase the pressure: Use a suitable
screwdriver to turn the operating pressu-
+ + - -
re setting screw towards in anti-clockwi-
se direction
To reduce the pressure: Turn operating
pressure setting screw in clockwise
direction
9. Examining the special CO check valve
2
The check valve protects your valuable Pressure Reducer from corrosion
caused by back-flowing water. It will operate reliably over a very long
period. However, as dust and metal particles may collect on the sealing
surfaces over the course of time, the check valve should be examined
every 2 years at the latest and replaced if necessary.
Examination procedure:
• Close needle valve on CO Pressure Reducer.
2
• After 24 hours, unscrew the coupling ring on the side of the check
valve facing the pressure reducer.
• Pull off CO hose and check whether any water has entered into the
2
hose. If so: Replace check valve. If not: Reconnect hose to check
valve.
• Reset number of bubbles.
Don't worry: An effectively functioning aquarium will normally have no
problem coping without a CO supply for 24 hours.
2
Important note: Use only check valves designed for use with CO
as the Special CO Check Valve from DENNERLE. Standard air
2
check valves may become brittle through contact with CO within only
2
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a short space of time, resulting in leaks. This usually goes unnoticed.
What if ... – Troubleshooting
Fault Cause
A faint hissing sound Pressure Reducer is
is to be heard at the skew or has not been
screwed connection screwed in tight
between Pressure enough.
Reducer and CO
2
cylinder.
Washer defective.
No longer any bub- CO cylinder empty.
2
bles at the CO diffu-
2
ser
Needle valve closed.
Hose connection lea-
king.
Operating pressure
too low
Upgrade options
Level 1: The DENNERLE CO Night Cut-Off Valve Comfort
2
is controlled by a time switch and cuts off the CO
night, as plants do not consume any CO
valuable CO .
2
Level 2: The DENNERLE pH Controller 588 Digital
Comfort measures the pH value in the aquarium conti-
nuously and controls the CO supply precisely and fully auto-
2
matically via the CO Night Cut-Off Valve Comfort.
2
Professional tips from DENNERLE:
• Large quantities of valuable CO may be lost every day through leaking
2
CO hoses. We thus recommend the special Softflex CO
2
from DENNERLE.
• Even when using CO diffusors with integrated bubble counter, it is
2
nevertheless expedient to install an additional bubble counter close to
the Pressure Reducer. This enables the number of bubbles to be set
even more simply, quickly and exactly.
The DENNERLE CO Bubble Counter Exact offers the ultimate
2
in user-friendly reading coupled with exceptional precision: The CO
, such
bubbles produced by the CO bubble counter Exact have a mean weight
2
2
of 0.125 mg and a volume of 0.063 ml. 10 bubbles per minute thus
correspond to a CO supply of 1.8 g or 0.9 litres per day.
2
Technical data
Cylinder pressure manometer: 0 -250 bar. Operating pressure mano-
meter: 0 - 6 bar.
Remedy
Adjustable operating pressure. Connection for hose 4/6 mm. Precision
mechanism needle valve with stainless steel needle and precision
Unscrew Pressure
thread. Self-closing pressure-relief valve.
Reducer and screw
Guarantee period: 3 years from date of purchase (excluding parts
back in place with-
subject to wear).
out canting. Tighten
coupling ring.
Spare parts and useful accessories
Fit new washer.
(available from specialist retailers)
Ensure that washer
3032 Reusable 500 g CO
is fitted correctly
3031 Reusable 2 000 g CO
and that the sealing
3028 2 washers for Classic-Line Pressure Reducer
surfaces are clean.
1484 Leak detector spray
3060 Special CO
Replace CO cylin-
2
3050 CO Bubble Counter Exact
der.
2
3053 Special CO
3040 CO Long-Term Test Correct
Open needle valve.
2
For further information on the range of aquarium plants and accesso-
Check hose connec-
ries from DENNERLE, consult your dealer or check out DENNERLE's free
tion, replace if
professional tips!
necessary.
DENNERLE professional tips are available from your dealer and on the
internet at www.dennerle.de!
Set operating pres-
sure to approx. 1
bar.
supply at
2
at night. This saves
2
hose
2
2
cylinder with cage
2
cylinder with cage
2
Softflex hose, 2 m
2
Check Valve
2
Sales: DENNERLE GmbH, D-66957 Vinningen
Customer service: DENNERLE GmbH, D-66981 Münchweiler
www.dennerle.de
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