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Instructions / Assembly

ManualsBrandsAPEC Water Systems ManualsKitchenUltimate Reverse Osmosis 360 GPD Commercial-Grade Water Filtration System
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OWNER’S MANUAL
This section provides explanation and basic concepts on how an RO system works, and how it performs in
relation to your input water’s condition. We hope this information helps keep your RO system running at top
performance for years to come.
1). Basic Terms
GPD = Gallons Per Day (flow rate)
PSI = Pounds per Square Inch (pressure)
TDS = Total Dissolved Solids (contaminants)
PPM = Parts Per Million (unit used to measure TDS level)
TDS Meter = A digital meter for measuring the TDS level in the water
2). Water Pressure – The Most Important Factor!
The RO system runs on water pressure. Therefore your water pressure has the most direct effect on how
well your RO will perform. Your Lite Commercial RO requires a minimum 50 psi input water pressure
to run efficiently. Higher pressures of 70-85psi will give faster output, fuller and quicker tank refills, and
higher contaminant rejection rates compare to lower pressure levels.
ITEM# 40 psi 50 psi 60 psi 70 psi 80 psi
LITE-180 120 GPD 150 GPD 180 GPD 220 GPD 250 GPD
LITE-240 160 GPD 200 GPD 240 GPD 280 GPD 320 GPD
LITE-360 175 GPD 220 GPD 270 GPD 317 GPD 360 GPD
Output at 77 °F VS. Various Input Water Pressure
3). Storage Tank’s Volume:
Your incoming water pressure will determine how fast and how full the storage tank will be filled up. The
storage tank is pressurized, so when it fills up, it asserts a “back-pressure” accordingly. The RO system
has to override this back-pressure when it spurts the product water into the tank. Therefore, the stronger
your input water pressure is, the fuller and quicker the tank will be filled. If the water pressure is low, the
tank will take longer to fill and may not fill up to its full capacity.
The 14 gallon tank will fill up according to your input water pressure as follows:
Input 70+ psi > tank fills 9.7 gallon ( almost 100% full )
Input 60 psi > tank fills 9.0 gallon ( almost 88% full )
Input 50 psi > tank fills 7.8 gallon ( about 70% full )
Input 40 psi > tank fills 6.1 gallon ( about 50% full )
So, if your input water pressure is low, the tank will not fill up to full.
* 14 gal is the tank volume. The tank bladder’s actual holding capacity depends on your input water
pressure. Higher water pressure fills up the bladder more, and lower water pressure fills it up less.