How to operate a wind freezer is an important aspect when using this appliance in food preservation. By using the functions and adjustments correctly, you can ensure that your food is well preserved and safe. In this article, let's Tan Long Discover how to operate your air-cooled freezer efficiently to optimize performance and ensure food safety.
What is a wind freezer?
Air Blast Freezer commonly used to preserve small-volume frozen products, such as seafood (fish fillets, shrimps, etc.), suitable for medium and small-sized enterprises. Average capacity from 200-500kg/h, using forced air to cool with temperatures that can drop to -35˚C. Goods are arranged in thin layers on trays and cooled by a high-speed circulating air system. The air freezer uses the flooded liquid feeding method.
Technical specifications
General Specifications
- Frozen products: Nobashi shrimp (PTO, HLSO)
- Product size: Various sizes
- Freezing capacity: 250 kg/batch (Nobashi 26/30)
- Freezing time: 45 – 180 minutes
- Initial product temperature: 10 oC
- Product release temperature: – 18 oC (equilibrium temperature)
- Required cooling capacity: 48 kW (60 minutes/batch, Nobashi 26/30)
- Chamber temperature when unloading: – 35 oC
- Number of freezer compartments: 2
- Number of condensers: 2
- Number of trays: 4
- Power supply: 380 V / 3Æ / 50Hz
Cabinet shell
- External dimensions: 5500L x 2250W x 2200H
- Shell type: Prefabricated panel
- Insulation material: Polyurethane 125 mm
- Shell material: Stainless steel
- Doors: 4 hinged doors with locks
Condenser
- Quantity: 2 sets
- Required cooling capacity: 24kW
- Required evaporation temperature: – 40 oC
- Rack type: Floor standing
- Refrigerant: NH3
- Fluid supply type: Fluid pump
- Defrost: Water 100 l/min, 2 bar 20 oC ¸ 30 oC
- Fan: 220V/380V x 3f x 50Hz x 0.8kW x 4 sets
Tray holder
- Quantity: 2 sets
- Dimensions: 810W x 500L x 1680H
- Material: Stainless steel
Tray
- Quantity: 100 sets
- Dimensions: 740W x 490L x 30H
- Material: 2mm thick aluminum sheet
>>>See more: Structure and working principle of contact freezer
Advantages of air freezer
The advantages of air-cooled freezers are diverse:
- Fast freezing and energy saving: The cabinet has the ability to freeze quickly, save electricity and still maintain product quality.
- Durable and well insulated cabinet: The cabinet is made of stainless steel, with high insulation capacity using polyurethane foam, helping to preserve the product in the best cold conditions.
- Divided into separate compartments: The cabinet is designed with many separate compartments, each compartment has two convenient doors, creating flexible conditions for arranging and storing products.
- Compartments can operate independently: Each compartment can operate independently, which is suitable for the need to preserve different types of products without affecting each other.
- Easy to operate, maintain and clean: The cabinet is designed for easy operation, maintenance and cleaning, making the use process convenient and efficient.
Instructions on how to operate a freezer
Prepare to freeze
Note: If the refrigerator has just been defrosted, make sure it is dry before loading.
1. Open the cabinet door.
2. Check that there are no foreign objects left in the cabinet such as tools, trays, rags, etc.
3. Move the frozen trays to the tray rack. Arrange the trays to ensure ventilation between the products as designed.
4. Check to make sure the trays are empty.
5. Close the cabinet door.
Freezing
1. Check to confirm that the system is ready for cooling.
2. Turn on the circuit breaker supplying power to the cabinet.
3. Supply fluid to the cabinet.
Out of stock
1. Cut off the service level condenser.
2. Wait for the evaporator to drain (pump-down). The length of time depends on the capacity of the cooling system.
3. Disconnect power to the cabinet's electrical panel.
4. Open the door.
5. Remove the tray.
Defrost
1. Turn off the electrical cabinet circuit breaker before defrosting.
2. Open the solenoid valve to supply defrost water.
3. During defrosting, leave the door open to allow water to drain.
4. Defrosting time (about 30 minutes) depends on the temperature and flow of defrosting water.
Toilet
Use low pressure water jet method for cleaning. Use water that has been treated with microbiology according to regulations. Cleaning steps are as follows:
- Defrost
- Water spray
- Use detergent
- Rinse with water after using detergent.
- Aseptic
- Rinse with water after use using sterile method.
- Dry the evaporator, chamber and floor.
Long-term inactivity of the refrigerator
When the cabinet is not used for a long time, the following steps must be taken:
- Disconnect the power supply to the cabinet.
- The cabinet must be cleaned thoroughly.
- Cabinet doors should be left open for ventilation.
- During this time maintenance work should be carried out.
>>> Reference: Impingement freezing mechanism – Tan Long
What is the application of air freezer?
Air blast freezers are a popular solution in the food industry and are widely used in the following areas:
- Restaurant, hotel: Supports the preservation and quick freezing of foods, ensuring quality and food hygiene and safety in restaurant and hotel environments.
- Food Store: Maintain the quality of frozen foods, extend shelf life to ensure products are always fresh and safe for consumers.
- Food processing industry: Used in production lines to quickly freeze food products, helping to increase productivity and production efficiency.
- Medical: Air freezers are applied in the medical field to preserve vaccines, pharmaceuticals and biological samples, ensuring the safety and effectiveness of these medical products.
Maintenance work
Air freezer maintenance plays an important role in maintaining operating performance and ensuring food safety.
Weekly Check
- Fan: no strange noise, fan blades rotate smoothly without rubbing against the frame.
- Door heater resistor.
- Gas leak
Monthly Check
- Fan: check fan screws and bolts.
- Door limit switch on door frame controls fan (fan will automatically turn off when door is opened).
- Door seal.
- Door: secure position with no sagging, adjust if necessary.
- Cabinet: is there any damage?
- For direct or flooded throttle systems, the oil in the condenser must be drained.
- Defrosting water system: piping system, water supply solenoid valve, unclogged spray pipe.
Quarterly Check
- Drain the oil in the heat exchanger.
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Outstanding features
The air-cooled freezer has many outstanding features that help preserve food effectively and save energy. Some notable features include:
- Tan Long's air freezer has the ability to quickly reduce temperature and freeze many types of food materials, so it can eliminate slow freezing.
- Designed and manufactured according to HACCP and FDA standards
- The freezer is made of stainless steel and standard materials that comply with food safety.
- Although the products are quickly frozen at low temperatures, they still maintain their natural flavor.
- This design freezes a variety of products in batches placed in trolleys, trays and cartons.
- Use Polyurethane Panel for insulation and stainless steel covering both sides.
- Floor structure is welded with stainless steel
- The coil is made of aluminum tube and stainless steel, so it can be easily cleaned and discharged.
- The freezer is fully factory tested and packaged for easy shipping. It is then assembled and tested before being accepted at your factory.
Buy air freezer at Tan Long
Tan Long – A reputable address for those looking for high-quality air-cooled freezers. With many years of experience in the field of providing refrigeration equipment, Tan Long is committed to bringing customers genuine air-cooled freezers, diverse designs and competitive prices.
When buying a freezer at Tan Long, customers will be enthusiastically consulted by a team of professional and experienced staff. We will listen to your needs and desires, from which we will give appropriate suggestions and advice, helping customers choose the most satisfactory freezer product.
Tan Long also provides on-site delivery, installation and training services for customers on how to use the air-cooled freezer. Our team of experienced technicians will ensure that the air-cooled freezer is properly installed, operates stably and safely.
In addition, Tan Long also provides thoughtful warranty and after-sales service. During the warranty period, if the air freezer has any problems, customers can rest assured to bring the product to Tan Long's warranty center for repair and replacement of genuine components, ensuring the air freezer works like new again.
With outstanding advantages in product quality, professional service and good after-sales warranty, Tan Long deserves to be a reliable address for those who are in need of buying air-cooled freezers. Come to Tan Long to experience the best quality air-cooled freezers and services.
For more information, please contact us directly using the information below:
Tan Long Refrigeration Electrical Engineering Company Limited
Head office: 86 Dong Den, Ward 14, Tan Binh District, Ho Chi Minh City
Factory: Lot MM3-2, Road No. 04, Duc Hoa 1 Industrial Park, Duc Hoa Dong Commune, Duc Hoa District, Long An
Phone : (+84) 028 38494943 – 028 62937108
E-mail : info@tanlongvn.com
Website:tanlongvn.com
