Labconco WaterPr RO Systems 90750 Series - Manuel (Page 6)

Chapter 1: Introduction
2
Original Instructions
The WaterPro RO System dispenses reverse osmosis purified water at the rate of up to 1 liter per
minute at 25°C from either the manual dispense valve or the optional dispensing gun. Water from
the dispense valve may also be activated automatically by using the timed dispense feature that
allows dispensing of the water for a period up to 99.9 minutes. An outlet port from the 17-liter
storage tank is provided for connection to a WaterPro PS Polishing Station and/or a Labconco
Glassware Washer.
The unit accepts softened or tap feed water. Softened water is preferred for extended membrane
life. Softened water is required when the LSI (Langlier Saturation Index) is positive. This is
determined through the Water Profile testing service from Labconco. Each model has the
capability of displaying water quality in microsiemens µS, water temperature in °C, timed dispense
duration from 0 – 99.9 minutes and a storage tank full indication light. The RO System uses built-
in activated carbon and particulate prefilters prior to the reverse osmosis membrane and storage.
The WaterPro RO Station is preset to 150 psi operating backpressure to provide an optimal RO
membrane conversion rate, prolonging membrane life. See RO efficiency table on page 39 for a
complete listing of RO performance.
To reduce bacterial growth in the storage tank, an automatic flush valve is incorporated to
automatically flush the storage tank while flushing the RO membrane for 3 minutes every 12-hour
period of inactivity. This process is controlled by the microprocessor board.
A hydrophobic filter is installed above the storage tank to filter air entering the tank as the tank
empties.
When greater quantities of RO water are required, a 14 Gallon or a 20 Gallon Bladder Tank is
available to provide additional storage of pressurized RO water. (Tank sold separately)