Why does the oven smoke when it is preheated?
Feel shy, oven and not bad, this is a new oven "disease", at the beginning of the oven heating heating element will be oxidized, will smoke, smell the smell of burning rubber that is usually used, anyway, a few times, good point. (handshake)
After 10 minutes, the oven door is fully opened to accelerate heat dissipation, and then it can be used in accordance with general procedures. You only need a small oven inside and outside wipe clean, open the oven door (there will be the same preheating smoke or smell out, turn off the power to smoke) until when. The heating tube changes brightness.
The oven should be roasted at high temperature before it is officially used to remove the heating odor of the new oven. Before using, wipe the oven inside and outside with a clean wet cloth. After the oven door is half opened, it is about to fire up and down. The temperature will be adjusted to the highest temperature (250 degrees Celsius) and empty for 10 minutes.
Smoking is normal. The first warm-up is smoke, because the grill is covered with protective oil.