Product Overview
Installation
1. The replacement water treatment filling unit must be horizontally
installed following the direction of flow as indicated by the arrow on the
AutoFill™ or 573 backflow preventer body.
2. The replacement water treatment filling unit is factory pre-assembled.
Fittings may have loosened during shipping and handle. Check the
fittings and tighten accordingly.
Backow preventer
The backflow preventer with atmospheric vent is designed to protect
drinking water systems from the return, caused by backsiphonage or
backpressure, of contaminated fluids. The Caleffi 573 series has been
specifically certified to standards CSA B64.3 and ASSE 1012.
Replacement of demineralization cartridge
The 10-inch cartridge insert, code NA573102, containing the color
changing resin beads that demineralizes water passing through it, will
appear blue color when new. The internal color will change to amber
as the resin beads approach a spent condition. Each cartridge can
demineralize approximately 30 gallons of water. This should provide
several years of normal make-up water supply, assuming only minor
water losses from the system occur.
New
Spent
Cartridge change
1. Close the isolation ball valves. 2. Turn the cartridge with white plastic
wrench included with unit. 3. Remove the used cartridge and discard
them. 4. Insert the new cartridge. 5. Turn the cartridge and tighten in
place with the white plastic wrench. 6. Re-open the isolation ball valves
to return to normal operation.
1 2 3 4
Note: The replacement water treatment filling unit is not designed for
initial filling. Caleffi’s HYDROFILL™ water treatment filling unit, code
NA5709 series, is recommended for that purpose.
The capacity depends on various factors including the temperature
of the water, the chemical composition of the water and pressure.
For an exact determination is a water analysis of the raw water. The
values specified here are always related to the optimal case and are
not binding.
White plastic wrench, included in
package, required to remove filter
housing to replace spent color
changing demineralization filter.
Please do not displose and keep
in handy location for future use.
Replacement of filter housing assembly
To prevent costly repairs or possible water damage, it is strongly
recommended to replace every 5 years the clear plastic filter housing
assembly, code NA573100. Be sure to date the newly installed,
or replaced, housing for future reference and indicate the next
replacement date.