HagenKB

Fluval-G: Output and Air

A) Air bubbles continuously come out from filter output.
B) After switching off and on of the filter, the filter is On and the flow rate is zero or insufficient.
C) The Filter has been switched off, then the mechanical pre-filter has been cleane

A) Air bubbles continuously come out from filter output.
B) After switching off and on of the filter, the filter is On and the flow rate is zero or insufficient.
C) The Filter has been switched off, then the mechanical pre-filter has been cleane
A) Air bubbles continuously come out from filter output.
1. The filter evacuates the air entering through the intake

Remove or relocate the origin of air so that it cannot enter the filter input siphon.

2. During normal operation, the filter may work with a slight negative pressure inside. It could suck air from various input system connection points. Check correct assembly and cleanliness of the intake cross rim assembly and stem, AQUASTOP, red O-rings, filter canister gasket, and cartridges. O- rings.

3. Progressive clogging of the filter media increases the negative pressure inside the filter. This favours the separation of gasses dissolved in water. These gases gather inside the filter, and are then expelled through filter outlet. Clean the mechanical pre-filter cartridge.
B) After switching the filter Off and then On, the filter is On but the flow rate is zero or insufficient.
An air bubble could be trapped inside the impeller chamber. By using the priming button, the filter's operating conditions are restored to the state previous to the power being off. If the mechanical pre-filter is very dirty (low flow), even using the priming button may not be sufficient to solve the problem. In this case clean the mechanical pre-filter cartridge.
C) The Filter has been switched off, then the mechanical pre-filter has been cleaned. The filter is On but flow rate is zero or insufficient.
An air bubble could be trapped inside the impeller chamber. By operating the priming button, the normal operation of the unit can be restored.
D) After cleaning, the maximum flow rate condition (fully white flow graph) is not restored.
The system measures the water flow by reading the electrical parameters of the pump, and it has been calibrated by referring to a standard application, i.e. intake and output hoses of the same length 1,5m, telescopic stem + strainer + regular cross rim device at intake, twin nozzles + regular cross rim device at output and AQUASTOP valve fully open. Different configurations may introduce different hydraulic circuit losses and consequently delay or accelerate the indication of flow reduction.
A premature drop in water flow may be also caused by:
Accidentally squeezed or collapsed hosing
AQUASTOP valve lever not fully lowered
Clogged hosing or cross rim assembly
Solids, debris or bacterial mud, block water passage inside the filter or at pump outlet.
The valves of the priming system are dirty or blocked
The chemical cartridge is still inside the protective poly-bag
Filtration media block pump inlet

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Hagen

Fluval-G: Output and Air

A) Air bubbles continuously come out from filter output.B) After switching off and on of the filter, the filter is On and the flow rate is zero or insufficient.C) The Filter has been switched off, then the mechanical pre-filter has been cleane

A) Air bubbles continuously come out from filter output.B) After switching off and on of the filter, the filter is On and the flow rate is zero or insufficient.C) The Filter has been switched off, then the mechanical pre-filter has been cleane

A) Air bubbles continuously come out from filter output.
B) After switching off and on of the filter, the filter is On and the flow rate is zero or insufficient.
C) The Filter has been switched off, then the mechanical pre-filter has been cleane

A) Air bubbles continuously come out from filter output.
B) After switching off and on of the filter, the filter is On and the flow rate is zero or insufficient.
C) The Filter has been switched off, then the mechanical pre-filter has been cleane