Page 17 of 75 Pages
3.11.3
Reverse Osmosis
A Reverse Osmosis (RO) system may be used to improve the
quality of the water used to generate steam in the autoclave
chamber.
In RO, the water is forced through a semi-penetrable membrane,
which filters out contaminants to a high degree of efficiency. In
deionisation (DI) ions and charged particles are removed either
by electric fields or by ion exchange in resin beds.
Although the RO cannot normally attain the degree of purity
possible with the DI methods, it is more than adequate for the
feed water intended for clean-steam generators.
Moreover the RO has several advantages:
1.
RO is cheaper to install and to run than DI.
2.
RO removes particulate matter, organic molecules and
pyrogens that DI cannot remove
3.
RO water is less corrosive to steel and copper than DI
water.
4.
RO maintenance requirements are less demanding than
those of the DI units.
Therefore the use of mineral free water will contribute to better
performance and longer life of the autoclave.
3.12 Safety Features
This autoclave includes built-in safety features such as:
Error message display.
Electronic pressure and temperature measurement.
Safety relief valve to avoid build-up of excessive pressure.
Door switches enabling operation to be started only when the door is
closed.
Water level safety device.
Excess temperature protection.
Summary of Contents for 3840 ELVG-D
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