11-14. COMPONENT PRINCIPLES OF OPERATION-continued.
CARTRIDGE FILTER (9). Removes small suspended solids that pass through the multimedia filter. Solids are trapped on
eight replaceable cartridges filter tubes inside the filter body. Elements should be replaced when cartridge filter gage
differential pressure rises above 20 psid.
RO. PUMP (10). Electrically driven high pressure pump increases system water pressure to the R.O. pressure tubes for
operation of the R.O. process.
PULSE DAMPENER (11) (Models WPES-10, WPES-20 and WPES-30 only). A cylindrical metal tank installed
between the R.O. pump and the R.O. pressure tubes removes pulses in water flow caused by the reciprocating action of the
R.O. pump pistons.
R.O. PRESSURE TUBES (12). The four fiberglass R.O. pressure tubes each contain two R.O. elements. Water entering
the R.O. pressure tubes is under high pressure, The semi-permeable R.O. elements use the high pressure to separate (strain)
dissolved solids from the filtered water. Product water is removed from the center of the elements. Dissolved solids are
flushed out of the R.O. pressure tubes as brine.
PRODUCT WATER TANKS (14). Two 3,000 gallon collapsible water tanks store product (potable) water produced by
DISTRIBUTION PUMP (15). Pumps and distributes potable water from the product water tanks to user containers.
DISTRIBUTION NOZZLE(16). Controls water flow from the distribution pump, Used for filling small hand held
containers or portable water tanks.
BACKWASH WATER TANK (18). Collapsible 3,000 gallon water tank stores brine water produced by the R.O. process
for use during the backwash cycle and cleaning R.O. elements.
BACKWASH PUMP (19). Pumps brine water from the backwash water tank to the multimedia filter for operation of the
backwash cycle. A strainer connected to the outlet of the backwash pump removes large particles of debris that may have
entered the brine water tank.
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