Every household will do a general cleaning during the Spring Festival, and the kitchen is no exception. Especially the net cover of range hood, it is not easy to c
Every household will do a general cleaning during the Spring Festival, and the kitchen is no exception. Especially the net cover of range hood, it is not easy to clean. Some wealthy families ask housekeeping companies to clean up, and many friends complain. So how to clean the range hood? I'll show you the details below.
building technology
1. Cleaning of range hoods
1 Why does the range hood need cleaning?
When the range hood is not cleaned, the burning flame in time will induce oil stains on the range hood, thus frequently causing fires. A range hood will attach a lot of oil stains after being used for a period of time. At this time, if the cleaning method is improper, it may increase the power consumption during continuous use. Frequent disassembly and washing of oil fume may lead to deformation of parts, thus increasing resistance and power consumption. In fact, lampblack generally does not enter the motor, so it is recommended to scrub the surface.
If the range hood is used for a long time and the flue is not cleaned frequently, it will leave a lot of oil stains on the surface of the range hood and flue. After a long time, oil stains will form, which will not be easily cleaned, affecting the use of range hoods and flues, making it difficult to eliminate smoke flow.
2 hood cleaning program plan
1 Preparation before cleaning:
A. Tool preparation: Tools needed for disassembling and cleaning the range hood include screwdriver, wrench, flat-headed gripper, wire pot brush, small brush, container for soaking and cleaning parts, old motorcycle tires for placing the machine body, and power tools.
B. Material preparation: soak a little detergent, a little vinegar, decontamination powder, dishcloth, electrical tape and soaking liquid hot water for cleaning parts.
2 cleaning process:
A, remove the oil residue inside and outside the machine and scale accumulated on the fan wheel; B, cleaning the range hood box and the fan impeller; C, add lubricating oil to the fan bearing.
2, fan maintenance and maintenance
1. The fan and its auxiliary equipment can be put into operation only after they are completely normal.
2. In the process of starting, stopping or running the fan, if any abnormal phenomenon is found, the power supply should be cut off immediately for inspection. For the minor faults found in the inspection, find out the reasons and try to eliminate them. If a major fault is found, the fan should be stopped immediately for a comprehensive inspection.
3. During the execution of the fan, always check whether the vibration, motor current, voltage and power of the fan are normal. If the fan is found to have abnormal phenomena such as violent vibration, impact, too large or too small current, it should be stopped immediately for inspection, and it is not allowed to start again until it is eliminated.
4. Always check the lubrication of bearings and add or replace grease regularly. The grease adopts calcium-sodium base grease. 5, axial flow or mixed flow fan, motor pipes should be maintained and cleaned frequently.
6. In order not to affect the balance accuracy of the impeller, impurities such as dust and dirt, especially oil pollution, etc. The inner and outer surfaces of the impeller and fan should be cleaned regularly to prevent the fan from rusting.
7, in order to ensure personal safety, fan maintenance must be carried out after downtime. 8. When starting the fan device after maintenance, attention should be paid to whether all parts of the fan are normal.
9. If the triangle is found to be stretched and skidded, the belt tightness should be adjusted in time to ensure that the model and quantity of the triangle are consistent.
3. The fault causes and maintenance of the oil fume purification device 1 emitting a large amount of smoke. The general reasons are:
1, the movement and filter screen of the purifier were not cleaned in time, resulting in internal grease accumulation and blockage.
2. The treatment air volume is insufficient, which makes the purifier stay in high-concentration oil fume for a long time.
3. The insulator and electrode system of the whole machine are damaged.
2 There are crackles in the electric field, and the general reasons are as follows:
1, there are foreign bodies in the electric field.
2. The distance between the electric field and the shell is too close.
3. The polarities of electric fields are opposite.
3 Maintenance and maintenance of oil fume purifier
1, regularly discharge the oil from the fume purifier.
2. Clean the oil fume purifier regularly, otherwise it will be blocked, especially the electrostatic type is easy to cause safety problems such as electric shock and fire.
3. When the equipment is idle for a long time, it needs to be cleaned to ensure that the purifier is in a dry and ventilated environment.
Cleaning operation procedure
1. Before cleaning the oil gallery, the power supply must be cut off, and the power switch should be sealed to prevent accidents; 2. After everything is ready, send someone into the oil gallery to shovel the oil stains inside;
3. Spray the liquid medicine with a sprayer for 10-20 minutes and then rinse it with a high-pressure water gun;
4. Remove the baffle of the oil fume duct and clean it with degreasing agent;
5. Cleaning the exhaust fan: drill it with an electric drill, and then shovel the oil stains on the blades of the electric fan and the oil residue inside the fan with a shovel. The electric fan cannot be washed with water;
6. When cleaning, the place with electricity and electromechanical devices should be scrubbed with a towel, not washed with water to prevent short circuit or burning. 4. Cleaning tools, methods, staffing and precautions: 1. Cleaning tools: a special high-pressure cleaning machine, a special cleaning liquid for range hoods, at least one set of lighting, several shovels and several garbage bags.
2, can use drilling method and hole method. The smaller flue adopts opening mode, and the larger flue adopts cleaning robot to completely remove flue dirt.
3. Staffing: Reasonable arrangement can make the project progress and achieve better results. The exhaust fan is generally 2 people; Generally, there are two people in the filter, and many people in the air duct rely on their own personnel. 4. Precautions during cleaning:
1. When you arrive at the site, you must cut off the power supply of the range hood system, which is the top priority of safety work. Most of the large range hoods in hotels and guesthouses use 380V high-voltage power supply, and very few use 220V power supply.
2. Use a shovel to shovel off the thicker parts such as ceiling, flue, fan and filter. Pay attention to the road conditions to avoid damage. 3. Spray special cleaning liquid for range hood once. Don't touch the human body, and take good protection.
4, sprayed with a special range hood high-pressure gun, the obvious residual dirt is a little bit.
5, except once, thoroughly remove all dirt.
6. After cleaning the oil fume pipeline, clean the site: desktop, ground, etc.
acceptance of works
1, acceptance method
After the project is completed, both parties shall jointly accept it.
2, acceptance criteria
1, range hood, cooker, no oil on the surface, no oil feeling by hand.
2. There is no scale outside the oil fume pipe, no vertical smoke pipe, no oil residue inside and no oil leakage.
3. The appearance of the range hood is free of oil stain, and the blades and box bodies are free of scale.
4. The electrostatic net inside and outside the electrostatic box is free of oil residue, scale and oil stain.