DISHWASHER INO 81
Code NU271706-02/04
Chap. 5 – Page 3
5.3. THE MOST CURRENT CASES OF CORROSION.
Cleaning tiling.
The cleaning of tiling (at completion of a building yard or on regular cleaning) is often done with very
aggressive products. If such products are carelessly sprayed under pressure, splashes at the bottom of
the machines lead to the corrosion of bottom and trimmings.
Even worse, the vapour issuing from these products, if the room is not immediately properly ventilated, by
falling and settling on the equipment succeeds in extending corrosion to the entire surfaces.
Unadapted maintenance product (bleach, acids, soda).
When unadapted products, such as bleach, acid and soda solutions (all these products are not specially
designed for maintaining stainless steel) are used, an irreversible attack occurs on the stainless steel
surfaces.
Maintenance product badly rinsed
Once cleaned, if the walls are not abundantly rinsed to eliminate any trace of maintenance product, the
latter will continue its action, which in time, leads to the risk of generating the start of corrosion.
Stagnation of cleaning products
In the same manner, any part that can withhold cleaning products, especially gutters and siphons, are to
be submitted to careful and abundant rinsing. (Use a nylon brush to reinforce the rinsing action with clear
water).
5.4. STAINLESS STEEL SURFACE
1. EXTERNAL SURFACES
It is necessary to carefully maintain the external surface to eliminate dust, metallic particles and residues
of any kind that could alter the protective layer mentioned above.
For this purpose, just wash these surfaces with water and soap or any neutral and non-abrasive
detergent product. Rinse carefully and wipe the surfaces.
Never scrub stainless steel with metal wool, but only and if this is necessary, with a “scotch brite” pad or
equivalent product by following the polishing direction of the stainless steel surface.
2. INTERNAL SURFACES
The general principle consists in not letting substances susceptible to concentration or modification
accumulate and so become very corrosive in certain parts.
For this purpose, clean the dishwasher thoroughly.
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Cleaning after each washing operation (Refer to the paragraph 3.4.) At completion of service)
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Verify the nozzles regularly.
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The washing nozzles should not choke, except with lack of precautions on preparing the dishes to be
washed or when installing the filter.
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The rinsing nozzles are choked due to scaling; in this case, soak the rinsing ramps in a descaling
solution.
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Verify monthly the presence of gaskets normally installed on the base of the ramp water supply.
