Section 6
Maintenance
STAINLESS STEEL CARE
Cleaning
Stainless steel contains 70-80% iron, which will rust
if not properly maintained. It also contains 12-30%
chromium, which forms an invisible passive, protective
fi lm that shields against corrosion. If the fi lm remains
intact, the stainless steel will remain intact. However,
if the fi lm is damaged, the stainless steel can break
down and rust. To prevent stainless steel breakdown,
follow these steps:
CAUTION
Never use any metal tools. Scrapers,
fi les, wire brushes or scouring pads (except for
stainless steel scouring pads) will mar the surface.
CAUTION
Never use steel wool, which will
leave behind particles that rust.
CAUTION
Never use acid-based or chloride-
containing cleaning solutions, which will break
down the protective fi lm.
CAUTION
Never rub in a circular motion.
CAUTION
Never leave any food products or
salt on the surface. Many foods are acidic. Salt
contains chloride.
For routine cleaning, use warm water, mild soap or
detergent and a sponge or soft cloth.
For heavy-duty cleaning, use warm water, a degreaser
and a plastic, stainless steel or Scotch-Brite pad.
Always rinse thoroughly. Always rub gently in the
direction of the steel grain.
Preserving & Restoring
Special stainless steel polishing cleaners can
preserve and restore the protective fi lm.
Preserve the life of stainless steel with a regular
application of a high quality stainless steel polishing
cleaner as a fi nal step to daily cleaning.
If signs of breakdown appear, restore the stainless steel
surface. First, thoroughly clean, rinse and dry the surface.
Then, on a daily basis, apply a high-quality stainless steel
polish according to manufacturer's instructions.
Heat Tint
Darkened areas, called heat tint, may appear on
stainless steel exposed to excessive heat, which
causes the protective fi lm to thicken. It is unsightly
but is not a sign of permanent damage.
To remove heat tint, follow the routine cleaning procedure.
Stubborn heat tint will require heavy-duty cleaning.
To reduce heat tint, limit the exposure of equipment
to excessive heat.
38 Combination Oven Installation and Operation Manual
RECOMMENDATIONS FOR CLEANING
Since the appliance is used for preparing foods for human
consumption, special care must be paid to everything
relating to hygiene, the appliance and the entire
surrounding environment must constantly be kept clean.
Table of Cleaning Products
Description
For washing and rinsing
For cleaning and drying
Recommended detergents An all-purpose cleaner *
Products for eliminating
unpleasant smells
*
mixed to the proper dilution and then properly rinsed per directions
IMPORTANT _________________________
Before starting any cleaning operation,
always turn off the gas supply valve, cut
off the electricity supply using the master
switch and allow the appliance to cool.
The precautions which follow are also important.
WARNING
When
personal
protective
gloves,
protective
goggles) must be worn in accordance with
the relevant safety regulations.
1. Always take the greatest care when handling
detergents.
2. Spray only small amounts of detergent.
3. Never spray detergent onto excessively hot
surfaces.
4. Never spray detergent at people or animals.
5. Follow the instructions provided on the detergent
pack and in the technical information. Mix to the
specifi ed dilution.
6. Clean all parts of the appliance with warm water,
food-approved detergents and non-abrasive
materials only.
WARNING Never use products containing
substances harmful or hazardous for health
(solvents, petroleum spirits, etc.).
7. Rinse surfaces with clean tap water and dry.
8. Do not use pressurized water jets.
Products
Tap water at room
temperature
Non-abrasive cloth which
does not leave any lint
Polishes containing citric
acid, acetic acid
using
detergents,
equipment
(rubber
mask
and
safety