Parker AQUA DUO A455C-2800, Technical Manual

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1) Measure raw water temperature and determine the corresponding correction factor from
Table 4.2 based on the measured temperature.
2) Note the actual product flow rate at the Product Flow meter or digital product readout. Multiply
the actual product flow meter flow rate by the correction factor from Table 4.2 to give
theoretical temperature compensated flow under standard conditions (25°C).
Example:
Raw Water Temperature: 15°C
TCF (Temperature Correction Factor): 1.47
Actual Product Flow: 113.5 (gph)
Calculation: 113.5 x 1.47 = 167 (gph)
Temperature Corrected
Flow: 167 (gph)
3.5 CONTROLS AND INSTRUMENTATION
The following table provides a brief description of each individual component along with an
explanation of its function. It is intended as a supplement to the more detailed information
contained in the System/Equipment Drawings and Diagrams.
3.6 RO FILTRATION SYSTEM DESCRIPTION
The raw seawater supplied flows to the booster pump were the pressure is increased to flow
through the filtration section of the system.
The fresh water passes through the Freshwater Flush Filter, which is designed to reduce chlorine of
the fresh water entering the unit when flushing. The filter housing consists of one carbon filter cartridge
(see section 1.4). The automatic valve for the freshwater flush filter, located on the top of the filter
housing, diverges water coming to the unit. The raw seawater is bypassed through the valve to skip the
freshwater flush filter and enter the unit.
Next the raw sea water passes through the 5-micron pre-filter, which is designed to reduce raw water
turbidity to a nominal 5-microns in diameter. The micron filter consists of one 5-micron filter cartridge.
The inlet and discharge pressure from the filter housing are monitored by the pressure gage & transducer,
which allows the operator to determine when the filter element requires replacement.
3.7 REVERSE OSMOSIS SYSTEM
The clean and filtered raw water (now referred to as feedwater) is supplied to the inlet of the high-
pressure pump.
This pump raises feedwater pressure to 56-65 BAR (800 - 950 psi), the nominal
pressure required for optimal system recovery. The pressurized feedwater then flows directly into the