Astralpool 57186-0100 Manual De Instalación Y Mantenimiento página 8

ENGLISH
Backwash process:
The valve automatically reverses the fi ltration cycle and commences the sand wash
process. This function requires that the valve is set so that the water coming from the
PUMP connection passes through the valve and is taken to the fi lter by the BOTTOM
connection, the sand is stirred and the water, together with any accumulated dirt exits
the valve TOP connection which communicates with the WASTE connection and is taken
to the drain. This process is carried out in accordance with the pre-established timing.
Rinse process:
The valve is positioned to compress the fi lter bed and not to send water containing
sand to the swimming pool. This function is achieved by water coming from the PUMP
connection entering the fi lter by the TOP connection, it then compresses the sand and
the water enters the valve via the BOTTOM connection which then sends it to the WASTE
connection. This process is carried out in function of the pre-established time and once
it has elapsed, the valve commences the fi ltration process again.
1.3 VALVE SPECIFICATIONS
Sizes 1½" and 2", side and top mounting.
Valve body manufactured in ABS.
Internal distributor manufactured in PPO.
Connection via threaded female, BSP or NPT, BOTTOM solvent socket connection.
Maximum operating pressure: 350 kPa (3.5 bar).
Test pressure: 520 kPa (5.2 bar).
Maximum useful life: 5,000 back-wash programmes.
Temperature range: 5 - 35 ºC.
Degree of protection of the electronic module: IP-65.
Maximum power = 35 W.
Do not use above 2,000 m from sea level.
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