Care And Maintenance; Technical Data - Dennerle Comfort-Line Compact Notice D'emploi

7. Setting the number of bubbles
Rule of thumb for the basic setting*: start with approx. 20 bubbles per
minute per 100 l of aquarium water, i.e. for a 200-l aquarium, for
example, use 2 x 20 = 40 bubbles per minute.
Adjust the CO supply to the desired CO content in small steps spread
2 2
over several days. Please note: The more vigorously the surface of the
water is set in motion (e.g. by filters, additional aeration), the more
CO will be expelled from the aquarium again.
2
• Slowly open the needle valve, initially only very slightly, until the
first bubbles issue from the opening of the bubble counter in the
Micro-Perler (green part).
• Set the desired number of bubbles on
-
the needle valve: - Turn in clockwise
+
direction to reduce the number of bub-
bles- Turn in anti-clockwise direction to
increase the number of bubbles.
Please note: There is always a certain delay before the number of bub-
bles changes in response to adjustment of the needle valve. The num-
ber 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.
• Fit the protective cap to the needle valve to prevent unintentional
adjustment.
* IMPORTANT: These bubble counts apply for the Micro-Perler only.
Different bubble counts may apply when using different diffusors, as the
bubble size is highly dependent on the equipment used. Please obser-
ve the relevant instructions for use.
DENNERLE professional tip:
• It is easiest to measure the CO content using the DENNERLE
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CO Long-term test Correct. The test directly and permanent-
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ly indicates the CO content of the aquarium water on the basis of
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its color. GREEN corresponds to the optimum value of between 20
and 25 mg/l. Further aids or water testing to determine CO
are not necessary!

Care and maintenance

8. Replacing the CO cylinder
2
• Remove protective cap from needle valve. Close needle valve by tur-
ning in clockwise direction. Caution: Tighten only gently!
• Unscrew pressure reducer from CO cylinder and screw onto new
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CO cylinder. Note: You may notice a brief "hiss" when screwing or
2
unscrewing the pressure reducer, similar to the sound when you
open a bottle of mineral water.
• Reset number of bubbles. Refit protective cap on needle valve.
New disposable CO cylinders are available from specialist retailers.
2
TIP: Always keep a reserve CO cylinder. Then you won't encounter any
2
difficulties should you run out of CO at the weekend, for example.
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During prolonged periods out of use the pressure reducer
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should be unscrewed. The valve of the disposable cylinder which still
contains CO will close automatically.
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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
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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.
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Important note: Use only check valves designed for use with CO
as the special CO check valve from DENNERLE. Standard air
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check valves may become brittle through contact with CO
a short space of time, resulting in leaks. This usually goes unnoticed.
10. Cleaning the CO Micro-Perler
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If necessary, clean Micro-Perler using water and a brush. Do not use
any detergents. The ceramic diffusor can be removed for cleaning by
unscrewing the black screw cap.
11. Replacing the washer in the pressure reducer
The self-locking, maintenance-free Longlife washer in the connection
socket of the pressure reducer will normally function effectively over
many years. Should you be unable to produce a connection which does
not leak despite screwing on the pressure reducer several times (with-
out canting!), the washer is presumably worn out and should be repla-
levels
ced.
2
• For this purpose, insert a small screwdri-
ver or similar behind the washer from
the side and carefully lever the washer
out. Be careful not to damage the
connecting thread, the pressure pin or
the sealing surface! Be sure to verify
that no foreign matter (dust, dirt par-
ticles, metal chips, etc.) enters into the opening of the pressure
reducer!
• Blow air through the connection socket in order to clean it.
• Carefully press the new washer into position using a suitable, non-
metallic object. Be careful not to damage the washer and the
connection socket. Check that the washer is fitted correctly in place.
What if ... – Troubleshooting
Fault Cause
A faint hissing sound is Pressure reducer is
to be heard at the skew or has not been
screwed connection screwed in tight
between pressure enough.
reducer and CO cylin-
2
der.
Washer in the con-
nection socket of the
pressure reducer is
defective.
Bubbles no longer CO
2
visible at the CO
2
Micro-Perler.
Needle valve closed.
, such Hose connection lea-
2
king.
within only
2
Upgrade options
Level 1: The DENNERLE CO
is controlled by a time switch and cuts off the CO
at night, as plants do not consume any CO
saves valuable CO
Level 2: The DENNERLE pH controller 588 Digital
Comfort measures the pH value in the aquarium conti-
nuously and controls the pH value and the CO
cisely and fully automatically via the CO
valve Comfort.
Professional tips from DENNERLE:
• Large quantities of valuable CO
king CO hoses. We thus recommend the special Softflex CO
2
hose 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 in user-friendly reading
coupled with exceptional precision: The CO
CO bubble counter Exact have a mean weight of 0.125 mg and a
2
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.
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Technical data

Disposable CO
Remedy
In accordance with TRG 303 (German technical regulations for pressuri-
Unscrew pressure sed gases). Test number issued by TÜV technical control board:
057478/85. Capacity: max. 500 g of CO
reducer and screw in
place again hand- Volume: 930 ccm. Pressure: 36 bar (0 °C). Test pressure: 165 bar.
Self-closing cylinder valve. Connecting thread M 10 x 1.25.
tight without can-
ting.
Pressure reducer Compact for Comfort-Line
Fit new washer (see Factory-set operating pressure: approx. 1 bar. Connection for hose
4/6 mm. Needle valve with stainless steel needle and precision thread.
above).
Self-closing pressure-relief valve.
Note: The CO
2
the DENNERLE disposable CO
cylinder empty. Replace CO cylinder.
2
be used with these cylinders. It is NOT permissible to operate the pressure
reducer with reusable CO
Open needle valve
Warranty: 3 years from the date of purchase (except wearing parts)
and set number of
Spare parts and useful accessories
bubbles.
(available from specialist retailers)
Check hose connection
3013 Disposable CO
(DENNERLE leak detec-
3014 Comfort-Line pressure reducer Compact
tion spray), replace if
3029 2 washers for Comfort-Line pressure reducer
necessary.
3042 2 Longlife suction clips, black
1484 Leak detector spray
3060 Special CO
night cut-off valve Comfort
2 3050 CO bubble counter Exact
2
supply
2 3053 Special CO
at night. This
2 3040 CO long-term test Correct
2
.
2
For further information on the range of aquarium plants and accessories
from DENNERLE, consult your dealer or check out DENNERLE's free pro-
supply pre-
2 fessional tips!
night cut-off
2
DENNERLE professional tips are available from your dealer and on the
internet at www.dennerle.de!
may be lost every day through lea-
2
2
2
bubbles produced by the
2
Sales:
Customer service: DENNERLE GmbH, D-66981 Münchweiler
cylinder
2
. Tare weight: 1.16 kg.
2
pressure reducer Compact has been developed especially for
cylinders of the Comfort-Line, and may only
2
cylinders by means of an adapter.
2
cylinder, 500 g
2
Softflex hose, 2 m
2
check valve
2
DENNERLE GmbH, D-66957 Vinningen
www.dennerle.de
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