Treatment Of Commercial Kitchen Appliances - Electrolux thermaline S90 Installation Und Betriebsanleitung

5. MALFUNCTION
Malfunction Possible cause
Pasta Cooker overheats; • Water level too low.
the power is too weak.
Flame smokes. • Gas mix too rich.
• Partially blocked burner
gaps.
Long yellow flame tips • Mixing tube narrowed by
dirt.
Flame takes off. • Exit velocity too high due
to blocked burner gaps.
• Pressure regulator on
gas cylinder not opera-
ting correctly.
Flame flashes back. • Mixture too lean.
• Insufficient exit velocityat
burner gaps.
• Soiled airways
• Blocked nozzle.
No flame at low setting. • Blocked low setting
nozzle.
No flame or flame too • Blocked nozzle or mixer
small. tube.
• Blocked gas tap.
• No gas.
• Insufficient gas pres-
sure.
Pilot burner
No flame. • Blocked burner gaps.
• Blocked nozzle.
Flame goes out after con- • Thermo-element insuf-
trol valve release. ficiently heated (dirty?)
• Defective thermo-ele-
ment
• Defective pilot burner
Flame too small or too • Primary air ratio adju-
large. sted.
• Nozzle blocked.
Seite 22
OPERATING INSTRUCTIONS
6.
APPLIANCES
Remedy
The commercial kitchen appliances are made of non-rusting
- Top up with water.
chrome nickel steels of materials No.1.4301 and 1.4404. The
corrosion resistance of these steels is due to a passive coating
- Inform Customer Ser-
which is formed on the surface by the admission of atmosphe-
vice.
ric oxygen. An accelerated or new formation of passivity
occurs by treatment with flowing water containing oxygen.
- Inform Customer Ser-
Depending on concentration and temperature, reducing effect
vice.
corrosive agents (oxygen-consuming) such as substances
- Inform Customer Ser-
containing hydrochloric acid, chloride and seasoning concen-
vice.
trates, mustard, vinegar essence, seasoning tablets and coo-
king salt solutions can cause chemical damage to or a
breakdown of the passive coating. Moreover, damage may
occur from extraneous rust (iron particles) through the forma-
- Inform Customer Ser-
tion of galvanic elements and from a deficiency of oxygen (no
vice.
access to air or low-oxygen water).
The following principles are therefore to be observed when
- Inform Customer Ser-
working with stainless steel appliances:
vice.
- Inform Customer Ser-
vice.
•
- Check gas tap setting.
- Clean pilot burner cap.
- Inform Customer Ser-
•
vice.
- Inform Customer Ser-
vice.
•
•
TREATMENT OF COMMERCIAL KITCHEN
The stainless-steel appliance surfaces must always be
kept clean and accessible to the air. When appliances are
not in use, keep the cover open so that air can have
access. Clean regularly to remove limescale, grease,
starch and egg-white coatings. Corrosion can develop
under these coatings from lack of air. Descaling can be
carried out with 10% acetic acid, 10% phosphoric acid or
suitable, commercially available descaling agents.
Stainless steel parts must not come into contact for long
periods of time with acids, seasonings or salt etc. Even
acid fumes, developed during tile cleaning, foster corro-
sion. Even acid fumes, developed during tile cleaning,
foster corrosion. This applies after use, especially after
cooking potatoes, noodles or rice in salted water. Dried-on
cooking water residues form high-concentration salt soluti-
ons, which can cause corrosion in places. Therefore rinse
out cooking appliances immediately after use with fresh
water or keep full of cold water to cool down. It is not advi-
sable to use an appliance exclusively for cooking e.g. pota-
toes in salted water. On the other hand, for stainless steel,
it is advisable to load the appliance with various foodstuffs,
e.g. fatty soups or acidic vegetables (such as sauerkraut).
if possible, the stainless steel surface should not be
mechanically damaged, especially by other metals. If stain-
less steel comes into contact with iron (steel wool, swarf
from pipes, water containing iron), this can cause corro-
sion. Fresh areas of rust can be removed with a mild scou-
ring agent or fine sandpaper. Stronger areas of rust can be
washed off with a warm 2-5% oxalic acid solution. If these
cleaning methods do not work, treatment with 10% nitric
acid is called for. Because of the dangers involved, this tre-
atment is only to be carried out by technically trained per-
sonnel in compliance with the existing regulations.
No bleaching or chloric cleaning agents are to be used for
cleaning. After cleaning the appliances must be thoroughly
rinsed with water and rubbed dry. The appliance surfaces
are of rust-resistant chrome nickel steel. Wash them with
hot soapy water to which a standard fat-dissolving agent
has been added and rub them dry. Cleaning with steel
brushes, steel wool, copper cloth, products containing
sand etc., must be prevented because their use destroys
all the surfaces and provides opportunity for corrosion to
develop. Spraying the appliance or parts of it with a water
jet or high-pressure cleaning device is damaging and can
cause malfunctions. It must therefore be stopped.
62.9680.01