Hellenbrand HRO 6 Series, User Manual

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HRO 6 07/26/12
The amount of permeate water recovered for use is expressed as a percentage. To calculate % recovery,
use the following formula:
% Recovery = (Product Water Flow Rate / Feed Water Flow Rate) x 100
Example:
26% = (1.04/4.00) x 100
% Rejection = [(Feed TDS – Product TDS) / Feed TDS] x 100
Example:
99% = [(550-5.5)/550] x 100
NOTE: ALL FLOW RATES MUST BE EXPRESSED IN THE SAME UNITS.
SYSTEM REQUIREMENTS AND OPERATION GUIDELINES
PLUMBING
The membranes and high pressure pumps used on HRO 6-Series systems require a continuous flow of
water with a minimum feed pressure of 45 psi, not to exceed 90°F.
FEED WATER CONNECTION
1. Locate the 1” FNPT Solenoid Valve feed water inlet.
(Figure 1A, Page 14)
2. Attach the inlet piping to the 1” FNPT Solenoid Valve feed water inlet.
3. Be certain that all of the dissolved solids within the feed water are soluble at the concentrations
attained in the system.
PERMEATE (PRODUCT WATER) CONNECTION
Locate the 1” or 3/4” connection (Depending on the unit) labeled permeate and attach to storage tank.
Ensure that the permeate water can flow freely with no backpressure. Backpressure can cause
irreversible damage to the membrane elements. The 1” or 3/4” (Depending on the unit) permeate line can
be run to the holding tank with PVC fittings, or other FDA approved materials. This is so the material
being used does not leach into the permeate water.
CAUTION THE pH OF THE REVERSE OSMOSIS PERMEATE WATER WILL TYPICALLY
BE 1-2 pH UNITS LOWER THAN THE FEED WATER PH. A LOW PH CAN BE VERY AGGRESSIVE
TO SOME PLUMBING MATERIALS SUCH AS COPPER PIPING.