Microwave

Microwave ovens, once an expensive novelty, are now found in most kitchens. Microwaves are a form of electromagnetic energy. It passes through the food and is readily absorbed by water, sugar, and fat molecules, causing them to vibrate. This increased molecular activity is basically how we define heat! That’s why people say a microwave oven cooks things “from the inside.” The radiation is reflected by metal.  This is why metal containers shouldn’t used, and why the oven’s walls are metal: it reflects the microwaves and keeps them safely inside.

Never run a microwave oven when empty, as this can damage it. You can test using a dampened paper towel or a small cup of water. Within 15-20 seconds the water should boil or the towel start to steam. Always report any arcing. Inspect for any physical damage inside and outside, including the door’s grid screen. The door should open easily and close tightly. If the unit is mounted it must be secure. If above a cooking surface a minimum 18″ clearance is needed. Check for functioning fans, lights, and turntables as present. Fans should not cause air to blow out around the cabinets; that implies a duct leak.

The microwave oven is inoperative. This prevents normal use. Repair or replace the oven.

The microwave oven is arcing during operation. This is a safety hazard. Replace the oven.

The microwave has significant interior damage or corrosion. This is a safety concern. Replace the oven.

The microwave door is broken or inoperative. This is a safety concern. Repair or replace the door.

The microwave door handle is broken or missing. This affects proper operation. Repair or replace the door handle.

The microwave has one or more missing, damaged, or inoperative controls. This affects proper function. Repair or replace the oven.

The microwave mounting is not secure. This is a safety concern. Secure the oven.

The space between the bottom of the microwave and the cooking surface is inadequate. This is a safety concern. Reinstall the oven so the space between the bottom of the oven and the cooking surface meets the manufacturer’s guidelines.