MIOX RIO-S Series Operators Manual
102-00130-D
Page
18
Figure 5: External plumbing connections required (3-way valve and Y-strainers not shown)
Sampling Valve Installation
MIOX supplies a three-way valve to allow for sampling of the disinfectant solution to verify
system performance. MIOX also supplies a check valve and strongly recommends installing
the valve on the oxidant discharge line. The valve should be installed immediately after the
three-way valve sample port to prevent the backflow of oxidant/hypochlorite into the
electrolytic cell.
Feed Water Requirements
Feed water requirements for the RIO-S OSG are given in Table 1. Additional feed water
flow rate is based on water softener requirements. Consult water softener specifications for
required flow rates. A minimum feed water pressure at the OSG of 50 PSI (345 kPa) for
systems with 1-3 banks and 60 PSI (414 kPA) for 4 bank systems; is required to ensure
stable flow and a continuous supply of 5-25 PSI (34-172 kPa) brine feed to the electrolytic
cell. To protect against low water pressure, an auto adjusting flow control valve is included
in the piping manifold to compensate for inconsistent flow and pressure fluctuations. It uses
a turbine flow sensor that sends pulses to the PLC when the turbine is spinning. Based on
the rate of the pulses, the system can calculate the feed water flow rate and adjust the flow
control valve accordingly. This setting is critical for proper oxidant production, cell cooling,
and other key operating parameters. A liquid filled pressure gauge is included in the
plumbing assembly to visually monitor the cell pressure (Figure 4). Maximum supply
pressure to the RIO-S OSG should not exceed 100 PSI (689 kPa). For supply pressure above
100 PSI (689 kPa), a pressure regulator must be added to lower the pressure to the before
mentioned specified range.
