Introduction to Reverse Osmosis Reverse Osmosis (RO) operates by removing contaminants from water at the molecular level. By using your
household water pressure to squeeze your water against a special membrane, water molecules are separated
from impurities. Rejected dissolved solids are automatically rinsed down the drain leaving only high-quality,
delicious water for you to use.
General Information
1. WaterMax® Reverse Osmosis Drinking Water Appliances replenish at about one-half gallon per hour,
depending on your tap water pressure and the water temperature. Low water pressure and
temperature will cause all RO appliances to produce a lower quantity of treated water. This appliance is
designed with a self-regulating flush feature that limits the reject water to approximately four gallons for
every gallon of permeate water. Your RO will perform better and last longer with heavy use. We
encourage you to water house plants, provide water for pets, cook, mix drinks, fill batteries, etc., with
RO water.
Figure 1: H3500 RO Appliance
WaterMax RO Owner’s Manual 11/11/2009 6