5
Service Manual for Refrigerated Back Bar Model RUF 48
MAINTENANCE
Stainless Steel Care and Cleaning
Stainless steel contains 70-80% iron, which will
rust. It also contains 12-30% chromium, which
forms an invisible passive film over the steel
surface and acts as a shield against corrosion.
As long as the protective film remains intact,
the metal will not corrode. However, if the film
is broken or contaminated, outside elements
can begin to breakdown the steel and begin to
form rust or discoloration. To prevent rust and
discoloration on stainless steel, several important
steps need to be taken.
CAUTION: Never use steel wool pads or
wire brushes or scrapers. Avoid
cleaning solutions that contain
alkaline or chloride.
Use alkaline based or non-chloride cleaning
solutions. Anything containing chloride will
damage the protective film on stainless steel.
Chlorides are found in household and industrial
cleaners and also in hard water and salts. If a
chloride or alkaline cleaner has been used, rinse
repeatedly and dry thoroughly.
Always use only soft cloths or plastic scouring
pads. For routine cleaning, use warm soapy water.
For stubborn stains use a non-abrasive cleanser.
For heavy grease use a degreaser. For best
results, rub with the grain of the steel.
Pitting and cracking are early signs of stainless
steel breakdown. Special stainless steel cleaners
can restore and preserve the protective film. If
signs of breakdown appear, thoroughly clean and
dry all surfaces. Begin regular application of a
high quality stainless steel cleaner according to
the manufacturer’s instructions. Again, always rub
with the grain of the steel for best results.
CAUTION: Never use an acid-based cleanser!
Be sure to clean all food products
from any stainless surface. Many
food products contain acid, which
can deteriorate the finish. Common
foods include tomatoes, peppers
and other vegetables.
WARNING
ThE POWER MUST BE TURNED OFF
AND DISCONNECTED AT ALL TIMES
DURING MAINTENANCE OR REPAIR
FUNCTIONS.
