The rectangular cooking rack is ideal for two-level cooking. It provides extra cavity space for cooking 2 or more containers at the same time. Insert the rack securely into the rack supports on the side walls of the microwave oven.
When not using the rack for cooking, remove it from the microwave oven. Damage to the microwave oven could result if someone unintentionally turns on the microwave oven.
Rack will become hot. Always use oven mitts or pot holders when handling.
To avoid damage to the microwave oven, do not allow the rack to touch the inside cavity walls, ceiling or floor.
Use the rack only when cooking on 2 levels.
To avoid damage to the microwave oven, do not use metal cookware, utensils, or a browning dish with the rack.
To avoid damage to the microwave oven, do not let food container on rack touch the top or sides of the microwave oven.
For best cooking results, do not use browning pan on rack.
Remove rack before using Popcorn function.
Do not cook food directly on the rack. Always use a microwave-safe container.
The rack is designed specifically for this microwave oven. Do not attempt to use any other rack (besides those supplied with the microwave oven) in this microwave oven.
To avoid damage to the microwave oven due to soil buildup, clean rack supports often (see “General Cleaning†section
The oven cavity wall can most likely be repaired. The rack support will have to be replaced and the burnt area sanded and then painted with some microwave touch up paint. The rack may be able to be cleaned and reused but it may have to be replaced if it will not clean up.
RACK SUPPORTS
To avoid soil buildup which may lead to arcing and cause damage to the microwave oven, clean rack supports often.
Do not use soap-filled scouring pads, abrasive cleaners, steel wool pads, gritty washcloths or some recycled paper towels.
Mild, nonabrasive soap or detergent and washcloth, toothbrush or cotton swab:
Rinse with clean water and dry with soft, lint-free cloth
NOTE
: If all the carbon/burned area are not totally removed, it could happen again.
I added a list of some paints used for microwaves. Most part of the part numbers is available. I would recommend using the spray paint instead of touch up paint. The part number will be the number after the (DIV) and after the (PLS) numbers. Without knowing the model number of your microwave I will not be able to provide the specific part number of the rack support or rack.