Fluval Q.5 Mode D'emploi page 5

1. Install a Check Valve.
2. Leave pump running while you disconnect tubing from pump. Disconnect tubing and tape this end of the
tubing to the very top frame of your aquarium.
3. Filter(s), air stone(s) and other air-driven ornaments can now be safely removed from your aquarium.
AIR FLOW ADJUSTMENT
The Fluval Q2 air pump incorporates a flow control knob (rheostat) to control air
output. Turning the knob clockwise increases the air flow and counter-clockwise
reduces the air flow. Proper air flow control reduces harmful back pressure and
lengthens the service life of the pump. Q.5 and Q1 air pumps are not equipped with
flow control; in which case an air control valve can be used to regulate air output
(sold separately).
In order to achieve correct airflow, a balance between the valve setting and the
pump output is necessary. The ideal setting is obtained by minimum back pressure
or non restriction of flow of air. Never physically restrict the output of the pump.
Restriction causes damage to the diaphragm (see BACK PRESSURE section for more information). Adjust
air valve output as required.
Note: If the first valve on the air control assembly is fully opened, air volume to the remaining outlets will
be reduced.
To alleviate excess air pressure or overproduction of air, it is recommended to open the last valve every 2
weeks or when required. In doing this, you will increase the life of the pump and diaphragms by preventing
premature wear.
BACK PRESSURE
Back pressure is the build-up of pressure on the diaphragm due to restricted air flow. This occurs when
excess air is produced by the air pump, or when the air channels are inadvertently blocked. Back pressure
over time resulting from clogged air stones or other air system blockages and restrictions will cause the
diaphragm to expand or rupture. An expanded diaphragm leads to a loss of air volume while a rupture
results in the total loss of air.
MAINTENANCE (EXTERNAL APPEARANCE)
Remove dust and grime with a soft, damp cloth. Do not immerse pump in water. Do not use detergents.
AIR STONE, AIRLINE, AND ORNAMENT MAINTENANCE
This pump requires no regular internal maintenance during its life.
The rest of the air system should be periodically checked and cleaned.
• Airlines should be carefully inspected whenever standard aquarium maintenance is performed. Adjust,
or if required, replace all sections which are pinched, kinked, or otherwise damaged.
• All attached air-driven aquarium ornaments should be regularly maintained. Algae growths should be
removed from moving parts and kept as clean as possible. Internal air tubes should be cleaned.
• Air stones should be kept clean and free of debris or algae build-up. The ideal situation is to replace them
To regulate air volume using an air control valve with multiple outlets, it
is recommended to have the last valve available to release excess air
pressure build up (see BACK PRESSURE section for more information). In
regulating the air pressure, it is best to work from the valve farthest from
the input of the air valve. Remember to have the last valve completely
closed so as not to lose any air pressure. Proceed to make adjustments
on the remaining valves. Once the adjustments are complete, slowly
open the last valve to the point where no loss of air output is noticed
from the items controlled by the other valves. To achieve and maintain
an equal balance of air pressure to the accessories in the aquarium,
further adjustments of the air valve may be required depending on the
items powered by the air pump.