Haier HR-7857A Answers to Questions, In maintenance, the technicians shall pay attention that

Answers to Questions

Answers to questions

Why is the lamp not on?

Why is the vapor emitted from the air discharge outlet? Why is there water overflowing below the door?

Can the microwave leak from the view window of the door?

If start the microwave oven without load of food, will it damage the oven?

1.The lamp is bad.

2.The timer is not set.

It is normal that the vapor may emit during cooking. Some- times as the vapor is too thick and gathered inside the oven, finally condensed into water and flows out. It is normal phenomenon.

No. The metal shelter can reflect the energy back into the oven. The view window only allows harmless light to pass through. The microwave can not pass through.

Yes. NEVER do that.

Why does the food need to be laid aside after cooking?

Why is it not so quick as stated in the manual to cook with my microwave oven?

It is important to lay the food aside for several minutes. Cooking by microwave oven makes the food gathering heat inside. After you take out the food from the oven, the in- side of the food will continue heating for 2-3 minutes. It can cook the jointer of the food, big block of vegetables or cookies completely outside the oven by laying aside.

Check the user’s manual. Confirm that you follow the instruction completely. Find out the reason for setting different times. The setting of cooking time is only for reference. To avoid excess cooking, you shall learn the technology of cooking with microwave. The volume, weight and shape of the food can all influence the cooking. Take the instruction as reference, and learn it independently.

Why is there lightening or cracking sound during cooking sometimes?

It may be owing to following:

1.Dishware with metal part is used (including gold and silver);

2.Fork or other metal dishware are left in the oven;

3.Too many metallic foil are used;

4.Metallic thread is used to bind the food.

In maintenance, the technicians shall pay attention that:

Components that are easy to dismantled and likely to touch voltage above 250V:

1.Magnetron

2.High-voltage transformer

3.High-voltage capacitor

4.High-voltage diode

5.AK rectifier

Components that may cause excess microwave leakage:

1.Improper installation of the magnetron on the wave guide

2.Improper adjusting of the door hook, door body and up/down hinges

3.Door body and shell are damaged

The above problems can cause excess microwave leak- age

Microwave radiation

Do not expose yourself inside the radiation of the microwave generator or other components that transfer the microwave energy.