Arjo Typhoon - Water Quality Requirements

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9 WATER QUALITY
It is the customer’s responsibility to supply the
washer-disinfector with water of the right quality.
The quality of the water used in all stages of cleaning is important
for good cleaning results. The water used in each step should be
compatible with:
• The material that the washer-disinfector is made of.
• The chemicals used in the process.
• Process requirements for the various stages of the process
The main factors for good water quality are:
Hardness High hardness will cause limescale
deposits in the washer-disinfector,
leading to poor cleaning results.
Ionic contaminants A high concentration of ionic contaminants
may cause corrosion and pitting on
stainless steel.
Heavy metals such as iron, manganese
or copper cause instruments to tarnish.
Microbial contaminants Goods to be washed are treated for
microorganisms and their residual
products, which may cause fever-like
symptoms if they get into the human
body. Use water that does not increase
the biological load.
Sanitary chemicals High concentrations of, and high
exposure to, sanitary chemicals may
cause corrosion and pitting on stainless
steel.
Arjo recommends that water used in the pre-rinsing, washing and
nal rinsing phases should be of drinking quality in accordance
with the guidelines. Recommended water quality is drinking water
with max 5°dH. Detailed information about acceptable water quality
can be found in “Guidelines for Drinking Water Quality, published
by WHO.