Tuttnauer 1730EK, Technical Manual

Page: 8 / 111

www.shanghaidelan.com
6
4. WATER QUALITY
4.1. Water quality
The distilled or mineral – free water supplied to the sterlizer shall be
according to the table below:
Physical Characteristics and Maximum acceptable contaminants levels
in water or steam for sterilizers
(According to EN 285:2006).
Evaporate residue ≤ 10 mg/l
Silicate (SiO
2
) ≤ 1 mg/l
Iron ≤ 0.2mg/l
Cadmium ≤ 0.005 mg/l
Lead ≤ 0.05 mg/l
Rest of heavy metals except iron,
cadmium, lead
≤ 0.1 mg/l
Chloride (Cl) ≤ 2 mg/l
Phosphate (P
2
O
5
) ≤ 0.5 mg/l
Conductivity (at 25°C) ≤ 15 µs/cm
pH value (degree of acidity) 5 to 7.5
Hardness ( Σ ions of alkaline earth) ≤ 0.02 mmol/l
Appearance
Colourless, clean, without
sediments
Compliance with the above data should be tested in accordance with
acknowledged analytical methods, by an authorized laboratory.
Attention:
We recommend testing the water quality once a month. The use of
water 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.
4.2. Reverse Osmosis
A Reverse Osmosis system may be used to improve the quality of the
water used to generate steam in the autoclave chamber. The use of
mineral free will contribute to better performance and longer life of the
autoclave.