Astralpool 09688 Manual De Instalación Y Mantenimiento página 4

? Starting up a new unit.
? Starting up a unit after an extended period of inactivity.
? Following use of a suction bottom cleaner.
? Air absorbed by the skimmer due to the low level of water in the pool.
? Due to incorrect use of the unit, suction cover or skimmer plug.
5.1.1 When is the filter unprimed?
The filter is unprimed when:
? The water entering the filter sounds like it is falling freely. This fact indicates that an air chamber has been created
between the water inlet and the silica sand.
? An excess of air bubbles are released through the feedback nozzle.
? The bottom cleaner (not supplied) does not operate with suction, and the silica sand remains clean after the
cleansing.
5.1.2 How can we prime the filter?
? Verify that the suction hose is connected to the skimmer and the passage is clear (the plug is not in place).
? Disconnect the filter from the power point.
? With the valve on the filtration setting, slightly loosen the drain nut which is next to the pressure gauge so that the air
which has built up inside the filter will be released. If the drain T has not been set in place, loosen the triangular knob
until water is released through the waste outlet without bubbles.
? When you see that only water is released (for 1 to 2 minutes), retighten the nut.
? Connect the filter to the power point and check that the sound of falling water is no longer heard. Otherwise, repeat
the operation.
5.2 Filtration
The valve must be in the filtration position (FILTER) fig. 12. The service life of the filter will be longer if the periods of
continuous operation do not exceed 4 hours. The need for daily filtration is determined by the volume of water in your
3
pool in m in comparison to the m
period of operation.
Example:
In the initial filtration treatment it is important to leave the filter at a standstill for the periods indicated.
5.3 Sand backwash
The backwash process cleans the silica sand from inside the filter. This is achieved by reversing the direction of water
circulation with the top selector valve. This process should be done regularly. For this purpose you should observe
several factors which indicate the dirtiness of the sand:
? Decrease in the flow rate of feedback is detected, after checking that the pump is well primed.
? Pressure gauge indicates that there is excess pressure (needle pointing between yellow and red, or on red).
5.3.1 For filter backwash, proceed as follows:
? Disconnect the filter from the power point. Never move the selector valve while the motor is running.
? Loosen the upper triangular knob on the valve by turning it until the cover is lifted from its housing and turned. Place
the valve on the backwash setting, reinserting the cover in its housing and retightening the knob by turning it. Do not
overtighten the knob as the valve may be damaged. Fig. 12.
? Connect the Ø38 mm x 1.5 m. hose to the valve waste (fig 8, pos 8) outlet and direct the other end of the hose to a
drain or sewer.
? Start up the filter for approximately 2 min (until no further impurities are released with the water).
? Stop the filter and leave it at a standstill for 2 min. to allow the silica sand to settle and prevent it from being released
into the pool.
? Reset the valve to the desired setting (filtration or closed) and remove the hose from the drain outlet.
5.4 Draining the pool
The following accessory is provided to empty the pool: portable submersible pump.
The filter allows you to drain nearly the entire pool after the bathing season has ended. In order to do so, you should set
the top selector valve on the waste setting (fig. 12) without plugging in the filter and connect a hose to the free outlet of
the selector valve in order to channel the water to the drain or sewer. Then, depending on the skimmer model, proceed as
follows:
3
/h filter flow rate. Leave the motor at a standstill for at least 2 h. between each 4 h
Volume of the pool in m
Filter flow in m
3
26 m
=7.42 hours
3
3.5 m /h
NEVER HANDLE THE VALVE WHILE THE MOTOR IS RUNNING
3
=hours required
3
2 cycles of 4 hours with an intermediary
cycle of 2 hours rest