Organization of catering in educational institutions institutions require strict adherence to sanitary standards, and cleaning refrigerators in the school cafeteria is a critical process. The safety of products that children and staff consume every day depends on the quality of surface cleaning. Sanitary treatment It is carried out not only for the neat appearance of the equipment, but also to prevent the growth of pathogenic bacteria such as salmonella or listeria.
The process of cleaning industrial refrigeration equipment is significantly different from washing household equipment home appliances. There are strict regulations here, prescribed in SanPiN 2.3/2.4.3590-20, violation of which can lead to serious consequences, including the closure of the catering unit. It is important to understand that the use of unsuitable detergents or violation of temperature conditions can spoil products or damage seals.
In this article we will analyze in detail all the stages of preparation, direct washing and disinfection of refrigerators in a school canteen. You will learn about the correct choice of chemicals, the frequency of procedures and nuances that are often missed during standard cleaning. According to the standards, defrosting of refrigerators with a drip system should be carried out at least once a month, and freezers - when frost forms more than 5 mm thick.
Regulatory requirements and cleaning schedule
The first thing to start planning cleaning work at a school catering unit is studying the current regulatory framework. In Russia, the main document regulating this process is the Sanitary Rules and Norms, which clearly regulate the frequency of sanitary days. A mandatory schedule has been established for refrigeration equipment, ignoring which is a gross violation.
Usually general cleaning with complete defrosting is carried out weekly, however, in school canteens with high traffic and heavy load, this interval can be shortened. Routine cleaning internal surfaces should be carried out daily as they become dirty, but at least once a day. External surfaces, including door handles and control panels, are wiped with disinfectants several times a day.
All actions of personnel must be recorded in a special sanitization log, which indicates the date, time, product used and the name of the responsible employee. This allows you to monitor compliance with the schedule and be responsible for the quality of work performed. Lack of records is equivalent to failure to clean.
⚠️ Attention: The defrosting schedule can be adjusted depending on the type of equipment. Modern low-temperature cabinets with the system No Frost require less frequent defrosting, but mandatory daily disinfection of the internal shelves.
You cannot independently reduce the frequency of cleaning in order to save time or resources, as this directly affects the health of schoolchildren.
Preparing equipment and products for washing
Before starting active actions, it is necessary to properly prepare the workplace and the equipment itself. The first step is always to empty the refrigerator compartment of all food stored there. The products should be transferred to backup refrigerators or special containers with ice so as not to disturb the temperature conditions of storage.
After the chamber is released, the equipment is disconnected from the power supply. This is a mandatory safety requirement that cannot be ignored. If the refrigerator has an automatic defrosting system, you must wait until the condensation has completely drained or speed up the process using approved methods that do not damage the evaporator.
- 🧊 Remove all removable elements: shelves, grilles, trays and baskets for further washing in the sink.
- 🧹 Prepare equipment: buckets, brushes with soft bristles, sponges and rags, which are color-coded for catering units.
- 🧤 Wear personal protective equipment: rubber gloves, a robe and, when working with aggressive chemicals, a mask or respirator.
Particular attention should be paid to checking the integrity of the rubber seals on the doors. Before washing, they need to be inspected for cracks or contaminants that could impair the seal of the chamber. Damaged seals must be replaced, as they become a breeding ground for mold.
Choice of detergents and disinfectants
In school canteens the use of household chemicals intended for home use is strictly prohibited. All products used must have a certificate of state registration and be approved for use in children's and medical institutions. Usually these are professional concentrates on an alkaline or acid basis.
Alkaline solutions are used to remove fatty contaminants, which are often found in refrigerators where meat and dairy products are stored. They effectively break down fat and protein contaminants. To remove mineral deposits and scale, if it forms on evaporators, acidic agents can be used, but with great care.
| Type of product | Purpose | Features of application | Washability |
|---|---|---|---|
| Alkaline | Removing fat and proteins | Requires caution, can dry the skin | Required |
| Acidic | Descaling, rust | Cannot be mixed with chlorine | Required |
| Disinfectant | Destruction of bacteria | Used after washing | Depends on the type |
| Neutral | Daily wiping | Safe for frequent use | Not required |
When preparing working solutions, you must strictly follow the dosage specified by the manufacturer on the label. Exceeding the concentration can lead to damage to the plastic elements of the refrigerator or the appearance of foreign odors in the food. Insufficient concentration will not ensure proper disinfection.
Is it possible to use chlorine-containing products?
The use of chlorine-containing products in school canteens is limited. Their use is allowed only for the disinfection of sewer drains and garbage cans. It is prohibited to use chlorine to treat surfaces in contact with food or the internal chambers of refrigerators due to toxicity and corrosiveness.
Technology for washing internal chambers
The process of direct washing of internal surfaces begins only after complete defrosting and removal of residual water. First, the walls, floor and ceiling of the chamber are sprayed or wiped with a rag generously moistened with a cleaning solution. Exposure (exposure time) must comply with the instructions for the specific product, usually 5-15 minutes.
To clean hard-to-reach places, corners and panel joints, brushes or brushes with soft bristles are used. It is important not to use abrasive sponges or metal scrapers, as they leave micro-scratches on plastic and metal. These scratches will subsequently become filled with dirt, which will be extremely difficult to wash out.
After exposure, all surfaces are thoroughly rinsed with clean running water. This is a critical step as chemical residues may end up on the food. Washing should be carried out until the water becomes completely transparent and free of foam.
☑️ Quality control of chamber washing
After rinsing, wipe the surfaces dry with a clean rag. A humid environment promotes the rapid development of microorganisms, so high-quality drying is as important as the washing itself. The refrigerator door is left open until completely dry and ventilated.
Processing removable elements and seals
Removable shelves, grates and trays are washed separately in the washing baths of the catering unit. They are also soaked in a cleaning solution, thoroughly scrubbed on all sides and rinsed with hot water. The temperature of the water for rinsing should be at least 40-50 degrees for better fat removal.
Particular attention is paid to the rubber seals on the doors. It is in the folds of rubber that black mold most often forms. To clean them, you can use cotton swabs soaked in an approved disinfectant solution or a soft toothbrush. You cannot rub aggressively so as not to damage the rubber structure.
⚠️ Attention: It is strictly forbidden to use hot water or aggressive solvents to wipe the seals, as this leads to deformation of the rubber and loss of door tightness.
After washing, all elements are thoroughly dried. It is not recommended to dry plastic shelves in direct sunlight or near open heat sources, as the plastic may become deformed or become brittle. It is best to dry them in a vertical position at room temperature.
Disinfection and the final stage
After all surfaces washed and rinsed, final disinfection is carried out. A disinfectant solution is applied to the internal walls, shelves and seals by spraying or wiping. This allows you to destroy the remaining microflora and create a protective barrier.
The exposure time of the disinfectant is strictly regulated and depends on the type of drug. Some products require rinsing with water after exposure, others are leave-in and should dry on their own. It is necessary to read the label carefully to prevent indelible chemicals from getting on the products.
The final step is to ventilate the chamber. The refrigerator should remain open until the smell of the disinfectant disappears completely. Only after this is the equipment ready to be loaded with products. The door closes tightly and the refrigerator is turned on.
It takes a certain time to set the temperature to operating mode. You can load food only after the refrigerator reaches the set temperature. Sharp loading with warm products can lead to their spoilage and increased load on the compressor.
External cleaning and care of equipment
The external surfaces of the refrigerator in the school canteen are no less polluted than the internal ones. Splashes of soup, hand marks, dust - all this requires regular removal. External walls, doors and handles are wiped daily using rags and an approved detergent.
For steel surfaces (stainless steel), it is recommended to use special polishes or products that do not leave streaks. Motions when wiping should be along the metal fibers to maintain the aesthetic appearance of the equipment. Abrasive powders cannot be used for external cleaning.
- 🚫 Do not allow water to get into the ventilation openings and electrical parts of the equipment.
- 🧽 Use a separate rag for external cleaning, marked with the appropriate color.
- 🌡️ Check cleanliness condenser (grids at the back) - its dustiness reduces the efficiency of the refrigerator.
Regular care of the external part of the equipment prolongs its service life and maintains a neat appearance of the catering unit. A refrigerator that is dirty on the outside often indicates problems inside, so the appearance is an indicator of the overall sanitary culture of the institution.
What to do if there is an odor left after washing?
If after a full cycle of washing and disinfection a persistent chemical odor remains in the refrigerator, the rinsing and airing procedure must be repeated. You can use activated carbon or special odor absorbers to speed up the process. It is prohibited to load food into a refrigerator that smells of chemicals.
How often should you change cleaning rags?
Rags for wiping the internal surfaces of the refrigerator should be labeled and used only for their intended purpose. After each general cleaning, it must be soaked in a disinfectant solution, then washed, dried and stored in closed cabinets. Worn rags must be replaced in a timely manner.
Is it possible to wash a refrigerator under water pressure?
Washing refrigeration equipment with a jet of water under pressure (from a hose) in school canteens is usually prohibited unless this is provided for by the design and the electrical part is not protected. Water may get into the insulation or contacts, which will lead to a short circuit or electric shock.
Does the capacitor need to be washed?
Yes, the capacitor (radiator), usually located on the back wall, needs to be periodically cleaned from dust and lint. A condenser clogged with dust impairs heat transfer, causing the compressor to work longer and consume more electricity. Cleaning is carried out with a dry brush or vacuum cleaner with the appliance turned off.