Drop BX-20-201, Руководство по эксплуатации

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General recommendations
INTRODUCTION
• In small facilities, with few filter elements, it is
recommendable to install a sustaining pressure
valve under the filtrate system, with the purpose of
guaranteeing sufficient pressure for the backwash
process of. This valve must go provided with a
control mechanism (electrical
or hydraulic) that manages its total opening during
the filtration process.
• In any case, whenever the installation does not
allow to maintain necessary the sufficient pressure
for the backwash one, it is advisable to place a
manual valve when coming out (of butterfly),
regulated properly to stabilize the pressure.
• With the purpose of eliminating the air that
could arrive at the filter elements, he is
recommendable to place a vent valve in an
advisable place of the system.
• In order to avoid the inverse flow, from the
• In order to avoid the inverse flow, from the
irrigation
towards the filtrate, before a
shutdown of the pumping system, the
installation of a retention valve is advisable, in
cases in that the height waters down is greater
than where the
pressure system is located.
• With the purpose of being able to eliminate
the water of the system for operations of
maintenance one is due to have a purge valve.
• The use of satellites filters in the water
takings
of the irrigation sectors
eliminates risks of cloggings of emitters.
These cloggings could be caused by the
grain
formation by agglutinations of
dissolved substances that precipitate
throughout the conduction. Also risk of
clogging
by a possible accidental
breakage of the conduction is run.
• As protection against overpressures
safety valves can be installed in the
system.