5.
Recommended dosage is normally 2-5 ml/l.
The used concentration of detergent is related to
- the degree of water hardness
- the degree of uncleanness
- the water temperature
Usually the temperature of washing water should be approx. +60
0
C,
in case of blood somewhat lower.
5.5
Process variables
See 5.2.
5.6
Required conditions
See also Technical specifications from Chapter 6. and Installation instructions Chapter 7.
(Maintenance manual)
Water quality
Deko 190 is designed to operate with potable water (
WHO-Guidelines for drinking water quality 1996
refers
) supplied directly to it, or with potable water supplied to the water treatment equipment
supplying the machine. Water treatment equipment may include e.g. a softener, de-ioniser or
reverse osmosis plant, as necessary. Note that many of the attributes of the water supplied to the
machine can affect the efficacy and/or efficiency of the process. These include hardness, pH,
microbial purity as well as various reactive anions and cations. For testing the water quality
please see EN ISO 15883-1 Chapter 6.4.
Quality of water used in the type tests
For reference, the quality of water used in the process, excluding any final rinse after disinfection,
the following values were determined during the microbiological type tests:
Conductivity: 16,4 mS/m
pH: 8,1
Oxidizable substances (Redox potential): UH 482 mV
Total hardness (Salts of Ca
2+
, Mg
2+
, Sr
2+
expressed as mmol CaCO
3
): 0,59 mmol/l
Total dissolved solids (TDS) determined as evaporative residue: 96 mg/l
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