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8
OPERATION
RO System Assembly
The RO System Assembly directs the flow of
water into the filters in numeric order, and out to
the steam humidifier. A built-in backflow preven-
tion valve prevents the backward flow of water
from the storage tank. The shutoff/check valve
provided with the steam humidifier must still be
installed between the RO system and the steam
humidifier.
#1 Sediment Filter
Cold water enters the sediment filter, reducing
chlorine, sand, silt, dirt and other sediment. This
filters the feed water before entering the RO filter.
#2 Reverse Osmosis (RO) Cartridge
Filtered water enters the RO filter where dis-
solved minerals are removed, effectively ‘soften-
ing’ the hardness of the water. This reduces the
amount of solid mineral (scale/sediment) fallout
inside the steam humidifier’s tank. Reducing the
amount of scale and sediment increases the time
between manual cleanings of the steam humidifi-
er.
#3 Staging Tank Canister
After leaving the storage tank, but before going to
the steam humidifier, water enters the #3 staging
tank canister. This canister holds the initial water
that enters steam humidifier when the solenoid fill
valve opens.
Storage Tank
The storage tank holds filtered water. A
diaphragm inside the tank keeps water pressur-
ized when the tank is full, to provide fast flow
from the RO outlet. The tank is charged with 5-7
psi air. The automatic shutoff valve fills and pres-
surizes the tank when low, and stops the flow of
water when the tank is full.
NOTE: It is normal to hear the RO System oper-
ating the first few days after the initial
installation. This will dissipate as air is
purged from the system.