Fresenius Medical Care AquaA, Instructions For Use Manual

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Chapter 12: Specifications
168 Fresenius Medical Care AquaA IFU-EN-US 06B-2021
Water pretreatment Pretreatment of the water is determined after previous water analysis.
Sensors
Parameter Values Unit
Water hardness < 1 °dH
Total chlorine < 0.1 mg/L
Iron* < 0.1 mg/L
Manganese* < 0.05 mg/L
Silicate* < 25 mg/L
Max. conductivity 2500 µS/cm
SDI*
( S ilt- D ensity I ndex or colloid index)
< 3 - - -
pH 6 to 8 - - -
* The parameters for iron, manganese, silicate, and SDI in the inlet water
should be checked before the water pretreatment components are
dimensioned.
Warning
Risk for the patient due to damage to the membrane
Deviating water quality can reduce the service life of the membrane.
This may require the membrane to be replaced prematurely.

Ensure compliance with the necessary parameters.
Measured value Sensor Measuring
range Unit Accuracy
Dialysis water conductivity CD–P 0.0 to 100.0 µS/cm ±5 % of the MV*;
±0.1 µS/cm
100 to 2500 ±10 % of the
MV*; ±0.1 µS/cm
Inlet conductivity CD–F 0.0 to 100.0 µS/cm ±5 % of the MV*;
±0.1 µS/cm
100 to 2500 ±10 % of the
MV*; ±0.1 µS/cm
Dialysis water temperature T–P 0.0 to 115.0 °C ±2 °C
Inlet temperature T–F 0.0 to 115.0 °C ±2 °C
Dialysis water pressure P–P 0.0 to 10.0 bar ±1%
Concentrate pressure P–C 0.0 to 20.0 bar ±1%