Thermo Scientific NAPCO 6506, Руководство оператора

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7
MAINTENANCE OF STAINLESS
STEEL
WARNING
UNIT MUST BE DISCONNECTED FROM POWER
SOURCE PRIOR TO SERVICING. IT IS
RECOMMENDED THAT ALL SERVICE BE
PERFORMED BY QUALIFIED SERVICE
PERSONNEL.
CAUTION
ELECTROLYSIS CAN DAMAGE STAINLESS STEEL.
THIS CAN OCCUR IF AN OBJECT IS ALLOWED TO
REST DIRECTLY ON THE SURFACE, TRAPPING
MOISTURE THAT BECOMES OXYGEN STARVED
BUT IS SURROUNDED BY WATER CONTAINING
OXYGEN. THE RESULTING ELECTROLYTIC
ACTION WILL PIT OR CORRODE THE STAINLESS
STEEL.
Background
Stainless steel is an alloy of steel with chromium
and nickel which increase the metal's resistance to
rust and corrosion. However, if not properly cared
for it can rust and corrode. Exposure to air provides
the passivation for clean stainless steel. This expo-
sure produces a thin, durable chromium-oxide film
that forms rapidly on the alloy surface and gives
stainless steel its characteristic "stainless" quality.
Exposure of the surface to water or other oxidizing
environments also produces this passivating film.
However, if free oxygen is not available due to
scale or contamination buildup the metal surface
may become vulnerable to attack.
Maintaining a neutral pH and frequent cleaning
with detergent and water will give you years of
trouble free service for your oven. The following
are some guidelines to consider.
Other
Water Additives
Proper maintenance of the stainless steel chamber
will help assure many years of service.
It should be cleaned regularly with mild soapy water
and rinsed with distilled water. Always thoroughly
dry the chamber after cleaning.
IMPORTANT
IF IT IS NECESSARY TO USE THE FOLLOWING
CHEMICALS, LIMIT THE EXPOSURE TIME TO A
MAXIMUM OF FOUR HOURS. CLEAN SURFACES
IMMEDIATELY AFTER USE.
Citric Acid (Boiling) Mercury Salts St-
annous Chloride Tartaric Acid
Potassium Permanganate Lysol
Aluminum Chloride
BariumChlori
Chlorinated Lime Calcium Chloride
Dakin's Solution Ferrous Chloride
Potassium Thiocyanate Phenol
Sodium Hypochlorite
NEVER USE THE FOLLOWING
Aqua Regia Ferric Chloride
Iodine Sodium Azide
Sulfuric Acid
Cleaning
Spills of any chemical, especially those listed
above should be removed as soon as possible and
the stainless steel surface cleaned with mild soapy
water followed by copious rinse with clean water.
Do not use soap filled or metallic pads. Even
stainless steel pads are to be avoided as they may
destroy the passive film on the surface of the metal
and create crevices that may harbor contamination.
If stubborn stains persist use a plastic light duty
cleansing pad and rub gently in the direction of
the metal grain. If stains continue to persist use
one of the following methods.
WARNING
THE FOLLOWING CHEMICAL METHODS HAVE
PROVEN SUCCESSFUL BUT EXTREME CARE
MUST BE TAKEN WHEN HANDLING THESE
MATERIALS. ALWAYS WORK IN AN AREA WITH
ADEQUATE VENTILATION. USE THE
PRECAUTIONS OUTLINED IN THE MATERIAL
SAFETY DATA SHEET (MSDS) AND
MANUFACTURER'S INSTRUCTIONS FOR THE
PRODUCT YOU ARE WORKING WITH. FOLLOW
THE PERSONAL PROTECTION INDEX FOUND IN
THE HAZARDOUS MATERIALS IDENTIFICATION
SYSTEM (HMIS) SECTION OF THE MSDS.