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6.3 Lighting and shutdown of electric oven
GN 1/1
With knob (pos. 1 fig. 2A) turn the thermostat from the "0" position
to a desired temperature between 50°C and 300°C; the indicator
light will come on; the green one (pos. 2 fig. 2A) shows that the
appliance is on, the yellow one (pos. 3 fig. 2A) indicates that the
resistances are operational, as soon as the set-up temperature is rea-
ched, the indicator light goes off.
To turn the appliance off, turn the knob to position "0".
6.4 Turning the appliance off in case of
breakdown
6.4.1 What to do in case of failure
In case of breakdown or malfunctioning or failure turn off the plates
and the oven. Switch off any electric power. Call the service centre.
6.4.2 What to do in case of prolonged period of disuse
When the appliance is not to be used for a long time, clean thor-
oughly, cas instructed in the chapter 6.5 "Appliance care and fre-
quency of maintenance", switch off any electric power.
6.5 Appliance care and frequency of maintenance
Attention! When cleaning, carefully avoid washing the
appliance with direct water jets or high-pressure
water!
Cleaning must be performed when the appliance is cold.
Thorough daily cleaning of the appliance, after disconnecting it, will
keep it in perfect working order and make it last longer. All steel
parts should be cleaned with water and a detergent, using a damp
cloth; do not use abrasive substances or corroding detergents.
Do not use steel wool, which could cause rust to form.
For the same reason, avoid touching the appliance with anything
made of iron. Do not clean with sandpaper and lubricating gel paper.
If absolutely necessary, you may use pumice powder.
If the appliance is extremely dirty, use a synthetic sponge (i.e.
Scotchbrite sponge).
After cleaning the appliance, rinse with clean water and wipe with a
clean cloth.
All maintenance and repair work must be carried out by authorized
technicians only.
The appliance must be checked at least once a year. For this reason,
a service agreement contract is recommended.
6.6 Recommendations for the treatment of
stainless "steel industrial" kitchens
6.6.1 Useful information on "stainless steel"
Industrial kitchens are generally made of "stainless steel" having the
following material codes:
• 1.4016 or 1.4511 = magnetizable chromed steels
• 1.4301, 1.4401 and 1.4571 = non-magnetizable chromed steels
Chromed steels have favourable thermo-technical characteristics. In
fact, they have less of a tendency to warp due to the effect of heat.
Chrome-nickel steels, instead, have good corrosion resistance features.
"Stainless steel" corrosion resistance is given by an inactive coat that
builds up on the surface by coming into contact with oxygen.
The oxygen in the air is already enough to build up the inactive coat
that allows automatic removal of anomalies and damage due to
mechanical actions. The inactive coat builds up or re-builds up faster
if the steel comes in contact with running water containing oxygen.
A more powerful effect is given by oxidative acids (nitric acid, oxalic
0801_GB_42 - ELECTRIC KITCHENS
6 - INSTRUCTIONS FOR USE
acid). These acids are used if the steel has undergone strong chemi-
cal stresses, hence generally losing its inactive coat.
The inactive layer can be chemically damaged or jeopardized by
reducing agents (oxygen consumption) if they come in contact with
the steel, concentrated or at high temperatures. These active sub-
stances include for instance:
• saline and sulphurous substances
• chlorides (salts)
• concentrated spices such as mustard, vinegar essences, soup
cubes, kitchen salt solutions, etc.
More damage can be caused by:
• outside rust (i.e. from other components, tools or incipient rust)
• iron particles (i.e. file dust)
• contact with non-ferrous metals (element build up)
• lack of oxygen (i.e. no air inlet, water lacking oxygen).
6.6.2 Warnings and advice for maintenance of "stain-
less steel" appliances
• "Stainless" steel equipment surfaces must be kept clean and in
contact with air at all times. When not running, keep appliance
doors open so as to allow air to run through it.
• Regularly remove calcium , grease, starch, and egg white
deposits where rust may build up if there is lack of air. Do not
use bleaching products or products containing chloride. Follow
all indications given by the company concerning special soaps
and cleaning methods to be used for the appliance. If no specific
cleaning recommendations are available, it is necessary, however,
to use detergents having a low chloride content. After cleaning,
remove all soap residues with plenty of clean water and thor-
oughly dry the surfaces.
• Minimize contact of "stainless steel" with concentrated acids,
spices, salts, etc. Even acid vapours coming from cleaning the
tiles favour "stainless steel" corrosion.
• Particularly for pots and multiple appliances, it is not recom-
mended to load the cooking chamber only with food having a
high salt content.
It is preferable to cook different food together, i.e. fatty dishes
or vegetables containing acids.
• Avoid damaging the "stainless steel" surface, in particular with
different metals. Residues from other metals help build up the
formation of chemical microelements that may cause rust. At
any rate, it is appropriate to avoid contact between iron and
steel since it produces rust. Any contact between "stainless
steel" and iron (steel wool, pipeline chips, chalybeate waters)
can start corrosion phenomena.
• As for mechanical cleaning, it is recommended to use only steel
wool or natural, plastic or steel bristle brushes. Steel wool or
brushes with "stainless steel" can cause rust due to rubbing.
Newly formed rust spots can be removed with slightly abrasive liq-
uid soaps or fine-grained sand paper. Larger rust spots can be
removed with 2-3% of hot oxalic acid solution. If these cleaning
products do not do the job, a nitric acid (10%) treatment is
required.
11 · 20
Attention! These treatments can be carried out only by
expert personnel according to current regulations!
04/2008
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