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WEEKLY SERVICING
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Prior to any maintenance, unplug the device.
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The inside of the tank can be water sprayed at low pressure.
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The switching unit cannot be cleaned with water spray. Use a sponge.
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General information on stainless steel : The term “stainless steel” can cause some confusion. It is steel
which “resists” to corrosion in certain conditions.
Any type of stainless steel can be corroded:
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austenitic, e.g. “stainless steel 304” also called 18/10.
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ferritic, e.g. “F17” or “F18TNb”.
Resistance to corrosion of stainless steel results from the existence of a passive layer of chromium oxide
which is renewed spontaneously when in contact with the air. Any phenomenon interfering with the crea-
tion of this layer is likely to cause corrosion.
This is why stainless steel surfaces must be regularly rid of miscellaneous contamination which may damage
the level of resistance of the passive layer, and also ensure the maintenance steps are observed. (Preparation
to cleaning / cleaning / rinsing / disinfection / rinsing / drying).
Regular maintenance with extended rinsing with water is the best method to renew and maintain the pas-
sive layer.
Each of the steps linked with maintenance presents risks of damaging the passive layer: using hard water /
overdosing detergents / using chlorine-based detergents / food residue on the products / insufficient rin-
sing…..
Whenever corrosion appears, the element or step having led to it must be identified.
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Advice :
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maintain stainless steel surfaces clean and dry. Ensure there is a sufficient flow of air.
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clean daily to remove scale, grease and any food residue. Corrosion can form under these layers by lack
of air inlet.
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daily cleaning can be performed with a damp cloth. If necessary :
* use soapy water, cleaning products with low chloride content, javel-free detergents, window de-
greasers.
* remove hard stains with a non metallic brush (plastic material, natural bristles or stainless steel
wool).
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do not scratch the surfaces with metals other than stainless steel, and more particularly, never use iron
brushes.
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remove fresh rust stains with soft abrasive agents or fine emery cloth.
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for larger stains, use hot oxalic acid with a 2-3% concentration. If necessary, apply a treatment with nitric
acid concentrated at 10%.
After treatment, wash thoroughly with water and wipe.
The use of acid is reserved to skilled persons and complying with regulations.
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Product to ban :
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Javel water and chlorine based products
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hydrochloric acid
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iron oxide abrasive powders.
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Control panel : clean with care. Use soapy water.
MAINTENANCE
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H05RNF 3X1mm2 type power cable. In order to change a damaged cable or for any maintenance operation,
contact an approved customer service provider.
This equipment carries the recycling symbol in accordance with Directives 2002/95/CE and 2002/96/CE relating to
Waste Electrical or Electronic Equipment (DEEE or WEEE) At the end of its working life the equipment should be recy-
cled in accordance with the regulations that are in force in the country of its installation.
