Page 11 of 101 pages
2.4 Water
Quality
2.4.1 Built-in Steam Generator
The distilled or mineral – free water supplied to the steam generator should be in
accordance with the specifications below:
Physical Characteristics and Maximum acceptable contaminants levels
in water or steam, for steam generator
(In compliance with ISO 11134 and ISO 13683)
Evaporate residue
≤
15 mg/l
Silica
≤
2 mg/l
Iron
≤
0.2mg/l
Cadmium
≤
0.005 mg/l
Lead
≤
0.05 mg/l
Rest of heavy metals
≤
0.1 mg/l
Chloride
≤
3 mg/l
Phosphate
≤
0.5 mg/l
Conductivity
≤
50 µs/cm
pH
6.5 to 8
Appearance
colorless, clean,
without sediment
Hardness
<
0.1 mmol/l
Compliance with the above data should be tested in accordance with approved
analytical methods, by an authorized laboratory.
Attention:
The use of water for the autoclave that does not comply with the table above
may have severe impact on the working life of the sterilizer and can
invalidate the manufacturer’s guarantee
.
The use of soft water is strictly forbidden!
2.4.2 Water for the Vacuum System and the Drain Cooling
The feed water supplied to the liquid ring vacuum pump must meet the following
requirements:
♦
Hardness:
0.7 - 2 mmol/l, 4-12 °(German) of CaCO
3
,
7.2-21°(French) of CaCO
3
, 72- 215 mg/l of CaCO
3
♦
Recommended temperature: 15°C
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