US Water Systems Defender 223-DFROM Series, Owner'S Manual

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If anti - scalant is used in lieu of a water softener to control hardness, the dose and mix is determined using the
feed water analysis, the chemical pump specifications and the RO system operating parameters. The table
below can be used in 90% of the applications. However, in some rare cases the US Water representative will
have specific guidelines. If this is the case the representative will make it known. Use the following procedure
when filling the tank;
1. Fill the tank with 5 gallons of clean water (preferably RO water). Add specified oz of the Hyper - Guard Plus
7000 anti - scalant solution for each gallon of water to the tank using the table below.
2. Install the injection check valve is in the chemical injection port on the RO system after the sediment filter.
This should be labeled with a pipe plug installed. Plug the chemical injection pump into the chemical injection
pump female cord labeled “ Dosing Pump ” on the RO system. This cord is energized when the RO system is
operating.
Anti - Scalant Filling and Settings (Optional)
1. Remove the cover on the Tank Connection access elbow.
2. Screw the strain relief on the float wire into the access elbow.
3. Connect the Black and Blue wire to each of the Green wires on the RO.
4. Tighten the strain relief and install the cover.
NOTE: If Pretreatment Lockout is utilized, a different wire routing method may be required.