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Z Series RO System by GE Osmonics
Inlet Solenoid Valve:
The Inlet Solenoid Valve is located on the riser pipe of the Z Series RO and serves to
shut off the water supply to the RO system. It is actuated open when the power switch is
placed in the ON position.
Inlet Water Valve:
The Inlet Water Valve is located after the inlet manifold and before the pre-filter. The
valve allows manual shut off of the water supply to the unit. This valve is also used to
shut off the water for pre-filter changes.
Product Return Valve:
The Product Return Valve is a spring loaded check valve that is set to open at about 2 PSI
over the inlet water pressure. If the Z-Series RO is used to supply water under pressure,
all excess product water will be diverted back to the inlet water line through this valve.
The valve prevents pressurized untreated inlet water from entering the product return
line.
1.8 Monitors and Controls
Power Switch:
The Power Switch is mounted on the front of the control panel. The switch is used when
normal operation of the RO system is desired.
System On Lamp:
The System On indicator lamp is lit whenever the power switch is in the ON position.
Low Feed Pressure Lamp:
The Low Feed Pressure indicator lamp is lit whenever the input water pressure drops
below the inlet pressure switch setting (approximately 10 PSI). The indicator will go out
when the water pressure returns above the pressure switch setting.
Pump Pressure Gauge:
The Pump Pressure Gauge reads the pump discharge pressure from 0 to 600 PSI. It is
used for monitoring during operation and when adjusting the pump pressure. It is used in
conjunction with the waste pressure gauge to evaluate the need to clean the membranes.
Waste Pressure Gauge:
The Waste Pressure Gauge indicates the waste pressure (post membrane) from 0 to 600
PSI. It is used as a reference when adjusting the pump pressure and flow controls. It is
used in conjunction with the pump pressure gauge to evaluate the need to clean the
membranes.
Pre-filter Pressure Gauges:
Pre-filter Pressure Gauges indicate the input water pressure from 0 to 100 PSI. The input
gauge indicates the raw water pressure available to the unit. The output gauge indicates
the pressure available after the pre-filter. The difference (delta) is used to determine
when the filter must be changed.
1238339b – 16Oct03 1 - 9 General Information