To ensure that the cold storage temperature is always stable and operates smoothly, it must be applied according to cold storage electrical diagram. This is one of the effective product preservation methods that processing industrial zones prioritize. Let's learn more about the cold storage control circuit diagram with Tan Long in the article below!
What is cold storage circuit design?
The cold storage electrical circuit is an essential component in the refrigeration and preservation system. This circuit is responsible for managing and controlling critical factors such as pressure, temperature, oil flow rate, and other elements, thereby ensuring optimal performance. cold storage operate efficiently and safely.
Cold storage circuit design is the process of applying electronic components to create a temperature control system. This process requires specialized knowledge of refrigeration, understanding of electronic components, and high technical skills to build and maintain electrical circuits effectively.
What parts does a cold storage electrical circuit diagram include?
The electrical control circuit diagram for a cold storage facility is selected based on the design and installation of the cold storage system. Currently, there are many different types of cold storage electrical circuit diagrams for businesses to choose from. Among them, the following are the most prominent types of cold storage electrical circuit diagrams:
Compressor oil heating circuit
The first component is the compressor oil heating circuit. If compressor The system is not functioning; the MC1-1 coil is not receiving power, causing the contacts to close. However, to ensure balanced pressure during startup, the system continues to supply power to the CH oil heater and the CV6 solenoid valve.
Oil flow fault circuit
Stability of compressor depends heavily on ensuring adequate oil flow. When the time relay TM8-1 and TM8-2 If the power is not received, the contact will close more slowly than normal. In addition, if the oil flow is still not guaranteed after about 20 seconds, the contact will often open and close slowly.
Oil level fault circuit
AX3-3 coil always supplied with power when the compressor is running, keeping the contact normally open. When the oil level is unstable, the contact UP-ON will open and AX10-1 coil does not receive power, resulting in a normally closed contact. However, the warning light remains on because the AX10 coil is still active.
Compressor overload fault circuit
This circuit protects the compressor from overload. When the compressor is operating stably, two contacts OL1-1 and OL1-2 always closed. When the compressor is overloaded, these two contacts will break the circuit and come with a warning light for the user to recognize.
Oil temperature fault circuit
The viscosity of the oil will decrease when the oil temperature increases too high. When Thr1 The compressor stops working and the fault light will turn on, this is also when the oil temperature increases.
High-low pressure fluctuation fault circuit
This circuit detects high or low pressure conditions and trips the circuit. When this happens, compressor will stop working and the warning light will turn on.
Operating principle of cold storage system
Cold storage system operates on the principle of forced air cooling. Products, whether frozen in blocks or in bulk, are arranged on trays and placed in freezer truckDepending on the area, scale and usage needs cold storage Can be installed overhead or underground.
Freezer vehicles are made from stainless steelIt has multiple tiers with appropriate spacing between the trays, ensuring even cooling for all products.
Inside the freezing chamber, the temperature is consistently maintained at -35 degrees Celsius, allowing for a rapid freezing process. For loose products, the freezing time is only about 3 hours. For other types of products, the freezing time ranges from 7 to 9 hours.
Tan Long - Prestigious and quality cold storage installation address
If you need to find a cold storage installation company to preserve food, dairy products, seafood, canned goods, etc., please contact us immediately. Tan Long Contact us via Hotline 0933.357.05. Tan Long is a reputable provider of cold storage design and installation services, offering high-quality products at the most competitive prices on the market.
Tan Long's cold storage installation service commit:
- Cold storage Meet quality standards and preserve all customer items well.
- Cold storage area spacious and airy.
- Flexible rental contracts depending on customer needs.
- Fast repair service with experienced and highly qualified staff.
- Fire protection systems comply with strict technical standards.
- Consulting team at Tan Long enthusiastic and responsible
In the above article, Tan Long has provided you with detailed information about cold storage electrical diagram as well as the basic operating principles of the system to effectively apply to your device. If you need cold storage construction and installation To store goods, contact us immediately. Tan Long by Hotline: 0933.357.058 ok
From diagram to a system that actually runs
A schematic only answers the question of how the system works. On a real project, the decisions rest on the heat load calculated for the actual conditions, the refrigerant selected, the equipment chosen and the site layout — none of which can be inferred from a diagram.
- Preparing to invest and need the capacity calculated correctly: see cold storage design consulting.
- Site ready and need a single turnkey contractor: see cold storage contractor.
- System running but consuming too much power or not reaching temperature: see refrigeration system maintenance.
- Need equipment for the compressor package: see industrial refrigeration compressors.
Frequently asked questions about cold storage circuit diagrams
What does a cold storage circuit diagram cover?
The power circuit supplies the compressor, evaporator fans, condenser fans and defrost heaters; the control circuit covers the temperature controller, relays and contactors; and the protection circuit covers the pressure switches and thermal overload relays.
Why does a cold store circuit need interlocks?
To enforce a safe sequence — for example, not letting the compressor run before the condenser fans are working, or preventing the defrost heaters and the compressor from running at the same time. Without interlocks, equipment damage follows easily.
Which protective devices are mandatory in a cold store circuit?
High and low pressure switches, motor overload relays, a circuit breaker on each branch, and — on larger compressors — an oil pressure switch plus phase-loss and phase-reversal protection.
Why is phase-loss and phase-reversal protection needed?
Because phase loss makes a three-phase motor draw excess current and burn out its windings, while phase reversal makes the compressor and fans turn the wrong way, causing damage on the very first start after rewiring.
How does reading the circuit diagram help in operation?
It lets you narrow down a non-running system quickly — identifying which protective device has operated and which circuit has lost its signal — instead of probing point by point or bypassing protection devices.
Does Tân Long supply control panels for cold stores?
Yes. Tân Long designs and builds control panels for cold stores and industrial refrigeration systems, handed over with circuit diagrams and operating instructions.
Related pages
- What is AHU? Structure, operating principle, AHU parameters
- What is HVAC? Principles, structure and research documents of HVAC
- Cold storage defrost heaters: construction, principle and how to test them correctly
- What is VRV cooling system? Advantages, disadvantages and operating principle
- industrial refrigeration systems designed and built by Tan Long
Doanh Nghiệp Đang Cần Khảo Sát, Nâng Cấp Hoặc Thiết Kế Mới Hệ Thống Lạnh Công Nghiệp?
Đội ngũ kỹ sư Cơ Điện Lạnh Tân Long với hơn 18 năm kinh nghiệm thực chiến chỉ đạo hơn 29 đại dự án quốc gia, cam kết tư vấn tính toán phụ tải nhiệt chuẩn xác, tối ưu hóa hệ số hiệu suất COP, chuyển dịch môi chất tự nhiên NH3/CO2 và tiết kiệm 20–30% chi phí điện năng vận hành.
Kỹ sư Nguyễn Toàn Thịnh (Giám đốc Kỹ thuật)
Hơn 18 năm kinh nghiệm thực chiến chỉ đạo tư vấn thiết kế và thi công hệ thống lạnh công nghiệp nặng, kho tự động ASRS và cấp đông IQF qua hơn 29 đại dự án quốc gia.
