Ducted exhaust fans, when in normal operation, require a professional assessment of their running condition prior to the start of cleaning projects. It is essential to ensure that the equipment operates normally before and after cleaning, and to guarantee the safety of the cleaning personnel by preventing electrical shocks or damage to equipment and facilities during the cleaning process. The following are the technical requirements for the cleaning standards:
1. Intake hood cleaning
(1) Employees are required to wear clean, waterproof, non-conductive, and anti-slip work attire prior to starting their shift, and all power sources to the smoke machine equipment are turned off by a professional.
(2) Completely remove the stove and adjacent equipment. For the stove top and adjacent equipment that cannot be moved, seal and cover them for protection.
(3) Staff conducted a thorough check of cleaning tools and equipment, took photos for documentation before the start of the cleaning process, and then commenced the cleaning operations.
(4) Gently scrape off the thicker oil sludge inside the wind deflector with a shovel, then apply degreaser and brush it two to three times, with a 15-minute interval between each application. Wait until the oil begins to melt, then wipe the wind deflector from top to bottom with hot water and detergent. Once the oil is completely clean, rinse the deflector with clean cold water and a dry towel. Finally, apply a stainless steel polish to achieve a spotless, glossy finish like new.
2.油烟管道清洗
(1) Employees wear waterproof, electric-shock proof, non-slip, and pipe-climbing suitable work clothes before cleaning the pipelines. It is essential to have a clear understanding of the pipeline diameter and air ventilation before cleaning. There must be at least two staff on-site, and someone must be present outside the pipeline for emergency prevention. Ensure that both pipeline and external personnel are on-site and leave simultaneously.
(2) Pipe cleaning must proceed from top to bottom in an orderly manner. Cleaning vertical pipes requires the use of a ladder, safety harness, and ropes for coordination. First, securely fasten the ladder and fasten the safety harness. Use an oil scraper to remove heavy oil stains from top to bottom, then use degreaser along with a scrub pad to scrub and wipe the pipe until it is bright and clean.
(3) When cleaning the horizontal pipeline, personnel must enter from the top opening of the exhaust hood. They should be equipped with oil sludge containers to remove and dispose of the heavy oil sludge from the exhaust hood opening. Subsequently, use a solvent and a polish to clean and brighten the area thoroughly.
Fuel Injector Cleaning
Carburetors are an essential purification equipment in kitchen exhaust systems. Prior to cleaning, it is mandatory for professionals to confirm the equipment's operational status and take photographs as samples before the cleaning commences. This ensures a clear understanding of the equipment's wear and tear, with evidence preserved for reference.
(1) Professional electricians inspect the equipment before cleaning to ensure it is operating properly, confirm that the power is off before starting the cleaning process, and then open the storage door and remove the power supply equipment for the electrical wires.
(2) The cleaning staff removes the carburetor screen, submerges it in the cleaning tank, soaking until the oil污 is clean. Rinse thoroughly with clean water, then let it dry before assembly.
(3) Cleaning staff will remove heavy oil污 from the carburetor's interior compartment, followed by wiping the inner walls clean with a towel soaked in carburetor cleaner.
(4) Carburetor Installation: After cleaning, take photos for record purposes. A professional will then reassemble the carburetor, power on the unit, and confirm proper operation.
4. Turbine Cleaning
The range hood fan is a particularly important electromechanical component of the equipment. Cleaning the fan refers to the cleaning of the fan blades and oil tank, not the motor wiring or electrical equipment.
(1) Prior to cleaning, a professional confirms that the fan is operating normally, then shuts off the power to the fan for cleaning. The cleaning personnel must open the impeller chamber under the supervision of a professional, remove the impeller blades, or directly enter the impeller chamber for cleaning.
(2) Avoid using water to wash the impeller to prevent water from entering the motor. For the oil mud on the motor's exterior, dry cleaning is recommended. When cleaning the interior, the principle is to use a small amount of water and gently wipe, ensuring no oil stains are visible on the equipment, and take photos for record-keeping.
(3) Fan Installation: After cleaning, take photos for documentation. Professional staff will reinstall the fan, turn on the power, and confirm the fan is operating normally.
