amiad SAF-6000, Инструкции по установке, эксплуатации и обслуживанию

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SAF 6000 219168 02.2019 Page 9 of 28
Description of Filter Operation
Filtering process:
The SAF-6000 is a sophisticated yet easy-to-operate automatic filter, with a self-cleaning mechanism driven by an electric motor. The
SAF-6000 is designed to work with various types of screens in filtration degrees from 10 to 500 micron, and is available in 6", 8" and 10"
inlet/outlet diameter.
The water enters through the inlet pipe into the coarse screen from outside in, and through the fine screen from inside out. The
"filtration cake" accumulates on the fine screen surface and creates head loss to develop.
The coarse screen is designed to protect the cleaning mechanism from large dirt particles. Usually, it does not accumulate large
quantities of suspended solids and is not cleaned automatically.
Self-cleaning process:
The SAF-6000 initiates the self-cleaning process when either the pressure differential across the screen reaches a pre-set value or the
flush timer reaches its preset timed interval.
The fine screen filter element is cleaned by the suction scanner, which rotates in a spiral movement while removing the filtration cake
from the screen, and expels it out through the exhaust valve.
A 2-way (fwd/rev) drive unit that is attached to the scanner by a threaded shaft rotates the scanner and provides the linear movement.
The exhaust valve is activated for the duration of the cleaning cycle by a 3-way solenoid. During the 20 seconds self-cleaning process,
filtered water continues to flow downstream.