Maintenance Of The Oven - Vulcan TCM Série Notice D'utilisation

3V-490058NU – 12/21
WARNING: Regular and thorough cleaning will ensure prolonged service life

UNDER NO CIRCUMSTANCES SHOULD CLEANING CHEMICALS BE USED ON SURFACES THAT ARE OVER 140°F.
The result will be serious discolouration and damage to the surfaces.

Jet washers and hoses, high or low pressure should never be used for cleaning.

The warranty will not cover resulting damage if the following guidance is ignored.

The appliance must be isolated electrically during cleaning or maintenance and when replacing parts.
28.1 INFORMATION ABOUT STAINLESS STEELS
Stainless steel is a steel grade designed that a thin protective sheet is formed on the metallic surface, which protects it against corrosion
(Oxide film resulting from the chemical reaction of oxygen on the metallic surface).
Anything hindering the formation of this sheet, or facilitating its partial destruction (Food residues, overflow of liquids, stagnant liquids...)
reduces the resistance of stainless steel to corrosion.
Whilst the composition of stainless steel enables it to withstand some chemical aggression better than classical steels, you must not think
that stainless steel is indestructible.
⚫ 3 main factors contributing to corrosion should be watched for:
- The chemical environment in general:
- The temperature:
- The duration:
The combination of these three factors may lead to the eventual destruction of parts of the equipment, even if they have been made in very
high quality stainless steel.
Note that when stainless steel becomes corroded, it is extremely rare that this is generated by the steel itself. Generally, cleaning
products, which are not appropriate or are improperly used, lack of maintenance or extreme conditions of use are often found to be the
cause of the damage.
The manufacturer will not be held responsible for cases of corrosion resulting from these conditions and the warranty will not apply.
A list of the most frequent causes follows, to allow you to better identify possible inappropriate use and to ensure the long service life of your
equipment.
28.2 THE COMMONEST CAUSES OF CORROSION:
Floor cleaning
Floors are often cleaned with very aggressive products (prior to handover or during a kitchen deep clean). If the product is sprayed,
without necessary precautions or suitable dilution, any splashes on the appliances may result in the corrosion of legs, bases and low level trims.
Worse still, if the area is not properly ventilated after application, the vapour from these products may settle on the equipment and result in
corrosion spreading to the entire surfaces.
Inappropriate cleaning product (Bleach, Acids, Soda)
If inappropriate products, such as bleach, acid or soda dilutions, (all products which are not specifically designed for the maintenance of
stainless steels) are used, irreversible etching of the stainless-steel surfaces can occur.
Cleaning product applied when the temperature is too high
All cleaning products are more aggressive at higher temperature. In principle the temperature of any surface must not exceed 140°C or
permanent staining (blackening) of the stainless steel will result.
Inadequate rinsing after cleaning
After cleaning the surfaces should all be rinsed thoroughly to remove any chemical residues. If this is not done the residue will continue to
act over time with the risk of starting the corrosive process.
Worse still, if the affected surface is submitted to temperatures over 140°C (inside of an oven, a tank or tank, ...), the impact will be greater
and corrosion will almost inevitably occur.
Stagnation of cleaning products
In the same way, all the areas that can trap chemicals, especially the channels, gutters, drainage manifolds, traps etc. must be subject to
careful and plentiful rinsing. (Use a nylon brush to reinforce the action of rinsing with clean water).
Salt concentration
Salt, much in use in kitchens, is often found to be the origin of pitting that can even penetrate the stainless steel. Spillages on any surface
should be cleaned up at once.
Particular case of cooking in boiling salted water:
Page 21
28

MAINTENANCE OF THE OVEN

* Different brines (Salt concentration, Sauerkraut...)
* Chlorides contained in particular in:
- cleaning products
- bleach.
Any chemical environment is made considerably more aggressive to stainless
steel as the temperature rises.
The longer the contact time between stainless steel and the chemicals, the more
noticeable the consequences of corrosion will be.
WARNING!
VULCAN
A division of ITW Food Equipment Group LLC
P.O. Box 696
Louisville, KY 40201
EN