User Manual for the Cliniklav
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It is advisable to make use of appropriate cleaning aids such as ultrasonic cleaning units, cleaning and
maintenance equipment for hand pieces and contra-angles, or thermo-disinfecting systems.
Cleaning the instruments before sterilization is very important in order to avoid introducing contamination
which can separate from the instruments under steam pressure during sterilization and block filters, jets and
valves of the autoclave. In particular, locks, joints and hinges should be thoroughly cleaned with a brush.
Cleaning and disinfecting agents should be washed off the instruments thoroughly in running water, again
with a brush. Residues of cleaning and disinfectant chemicals must not find their way into the autoclave,
since they can lead to corrosion! Swill finally with demineralized water and then dry the instruments.
Turbines and transfer instruments should be oiled in accordance with manufacturer's instructions in order to
ensure a long life for these components.
Brand-new instruments
The cleaning procedures described above are also necessary for brand-new instruments, since these often
carry very small amounts of oil, fat and soiling from the manufacturing process.
Note:
The instructions of the instrument manufacturers concerning first-time sterilization and re-sterilization
should be followed carefully.
7.3 Rust formation = Drag-in rust
__________________________________________
As already explained, the non-rusting materials used in the autoclave cannot cause rust formation in the
autoclave!
Where rust forms this is "drag-in rust". This originates from instruments or other metal items carrying traces
of rust, even though they are made of stainless steel, or which are made of normal steel but which have a
damaged galvanic coating. Often, a single rusty instrument is enough to pass rust on to other instruments or
to lead to film rust forming in the autoclave resulting to corrosion damage. Drag-in rust must be removed
from the affected instruments or from the autoclave and mounting using a mild commercial cleaning agent for
stainless steel. Do not use steel wool, a wire brush or other abrasive cleaners! Spots can be removed with a
damp, lint-free cloth or a cloth with surgical spirits or alcohol.
7.4 Use qualitatively high-grade feed water
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Quality requirements
For steam sterilization it is necessary to use high quality distilled or demineralized water.
The DIN EN 285:2009 recommends to notice the guide values for water quality in accordance with the
appendix B, table B.1.
Guide values for water quality in accordance with the CEN standard DIN EN 285:2009, Appendix B
Table B.1 –
impurities in the feed water for an assigned steam generator
Substance/properties
Feed water
Evaporation residue
≤
10 mg/l
Silicates
≤
1 mg/l
Iron
≤
0.2 mg/l
Cadmium
≤
0.005 mg/l
Lead
≤
0.05 mg/l
Residues of heavy metals
apart from iron, cadmium,
lead
≤
0.1 mg/l
Chloride
≤
2 mg/l
Phosphate
≤
0.5 mg/l
Conductivity (at 25 °C)
≤
5
µ
S/cm *
)
pH value
5 - 7
Appearance
without colour, without residue
Hardness
≤
0.02 mmol/l
*
)
µ
*
)
µ
S/cm = micro-Siemens per centimetre