User guide
M
Milleniumâ„¢ RO System by GE Osmonics 
14693e – 31 Mar 03  1 - 9  General Information 
1.8  Monitors and Controls 
Inlet Water Valve Switch:   
The Inlet Water Valve Switch is mounted on the control panel. The switch is used 
to energize a solenoid, pressurizing the system with feed water. 
RO Pump Power Switch:   
The RO Pump Power Switch is mounted on the control panel. The switch is used to 
energize the RO pump/motor. The inlet water switch must be ON for the 
pump/motor to operate. 
Disinfect Switch: 
The Disinfect Switch is mounted on the front panel. This switch is used to 
introduce disinfectant or cleaning agents into the RO through the disinfect port. 
Pressure Adjust Regulator: 
The Pressure Adjust Regulator inside the RO is used to set the maximum product 
pressure needed to supply a dialysis machine. Adjusting this regulator will also 
result in small adjustments in the pump pressure. 
Product Pressure Gauge: 
The Product Pressure Gauge reads the product pressure from 0 to 100 PSI. Product 
pressure will read zero when the product line is not connected to a dialysis unit and 
the product hose is connected to the product fitting and the valve is open. 
Pump Pressure Gauge: 
The Pump Pressure Gauge reads the pump pressure from 0 to 300 PSI. It is used 
for monitoring during operation and when adjusting the pump pressure, and is 
located on the front of the RO. 
Operate/Flush Valve:   
The Operate/Flush Valve is a 1/4-turn ball valve. When in the operate mode, the 
valve is in the closed position. When the valve is turned at any point towards flush, 
the valve is open. The closer to the flush point, the more the valve is open. When in 
flush, the valve bypasses the waste flow tube. 
Disinfect Port: 
The Disinfect Port is a quick-disconnection port for the introduction of disinfectant 
or cleaning agents. The port has a check valve that closes when there is no hose 
connected to the fitting. 
Feed Port: 
The Feed Port is a quick-disconnection port for the introduction of feed water to the 
RO. The port has a check valve that closes when there is no hose connected to the 
fitting. 










