In operation industrial cold storage, maintaining the level standard storage temperature This is a key factor in maintaining product quality and optimizing energy costs. However, mastering this is crucial. how to adjust cold storage temperature Setting technical standards on controllers is not easy for every operator. To avoid errors that cause compressor thermal shock or product damage, consult with the experts at Tan Long Discover the detailed parameter setting process and safety precautions in the article below!
Technical considerations before adjusting the temperature of a cold storage unit.
Setting parameters for a refrigeration system is not simply a matter of entering random numbers. To ensure efficient operation, save energy, and avoid the risk of goods damage, technicians or investors need to consider the following five core factors before applying any settings. how to adjust cold storage temperature:
Characteristics of the goods requiring preservation
Each product group has a "golden" temperature range for preserving nutritional value and freshness. For example:
- Fresh fruits and vegetables: Typically, a temperature between 3°C and 8°C is required.
- Fresh meat and seafood: The temperature should be maintained between 0°C and -2°C (soft freezing compartment).
- Frozen foods: It must be ensured that the temperature is between -18°C and -25°C.
- Pharmaceuticals, vaccines: Strict requirements according to GSP standards.
Preservation objectives and technical standards
Depending on whether storage is long-term or temporary, you need to adjust the temperature accordingly to optimize costs. For businesses applying ISO or HACCP standards, implementation is crucial. how to adjust cold storage temperature The operating log must be kept close. In addition, the frequency of opening and closing must be monitored. cold storage door Too much heat can also mean you need to consider setting the temperature lower to compensate for the heat loss.
The current state and performance of the system.
The effectiveness of temperature control depends greatly on the airtightness of the seal. Cold storage panel shellIf the warehouse has a large area but the cooling system is weak or the insulation is degraded, the actual temperature will always be higher than the set parameters. Before operating the control panel, check that the fan and compressor systems are functioning properly.
Classify the controller being used.
To know how to adjust cold storage temperature To do this quickly and accurately, you need to identify what type of control device your system is using:
- Mechanical controller: Simple operation, but high error rate.
- Electronic controllers (Elitech, Dixell, Ewelly): It has an LED display that supports detailed F1-F6 parameter settings.
- System PLC control cabinet: Modern design allows for precise temperature monitoring and adjustment via touchscreen or smartphone.
Test the sensitivity of the temperature sensor.
Faulty or incorrectly positioned sensors (too close to the indoor unit or too far from the convection airflow) will cause the controller to misinterpret readings. Tan Long recommends that you clean the probes regularly, calibrate the sensors according to the maintenance schedule, and compare the data with an independent thermometer before making any changes to the system settings.
Related content: Solution Construction of cold storage facilities for preserving milk and cream. Technical standards ensure a stable temperature range 24/7.
4 Principles for Adjusting Cold Storage Temperature for Optimal Food Preservation
Before delving into detailed operating instructions for each controller, operators need to understand the following four core principles. These principles help ensure proper operation. how to adjust cold storage temperature Maximize the effectiveness of equipment preservation and extend its lifespan.
Principle 1 – Design the system to the right scale and capacity.
A common mistake is trying to apply how to adjust cold storage temperature The temperature dropped to a low level while the refrigeration system and compressors were underpowered for the warehouse space. Scientific arrangement of goods, creating space for convection airflow, was crucial. To achieve maximum efficiency, this process must be carried out from the very beginning. cold storage design and installationBusinesses need to carefully calculate the scale of operations to ensure that temperature adjustments later on are stable and accurate.
Principle 2 – Set the temperature to match the food's characteristics.
Each product category has different temperature tolerance thresholds and freezing points. Therefore, how to adjust cold storage temperature It is necessary to adhere closely to the physical and chemical properties of the product:
- Seafood & Meat Group: Set the temperature to -18°C to -22°C to completely inhibit bacteria.
- Agricultural products group (vegetables, roots, and fruits): Maintain a temperature between 0°C and 5°C to preserve freshness and prevent "freezer burn". You can refer to the detailed lookup table in the article: Standard food storage temperatures.
Principle 3 – Thoroughly control factors causing heat loss.
All efforts to implement how to adjust cold storage temperature It would become meaningless if thermal energy leaked out. Common causes include:
- System cold storage door The gasket is leaking or the door is opening and closing too frequently.
- The insulation panel has deteriorated and is leaking moisture. Tan Long recommends that customers install additional cold-blocking plastic curtains or windbreak fans and take appropriate action. cold storage maintenance and repair Regular maintenance is essential to ensure the system consistently maintains the set temperature.
Principle 04 – Pre-processing and cooling procedures before warehousing
Food with excessively high input temperatures will create a "thermal shock," increasing the load on the compressor and causing significant temperature fluctuations in the storage area. Before application... how to adjust cold storage temperature For long-term storage, goods (especially seafood) need to be cleaned and cooled down beforehand. For vegetables, removing damaged parts and ensuring dryness will prevent mold growth, allowing temperature sensors to record data more accurately.
Detailed instructions on how to adjust the temperature of a cold storage unit using common control panels.
Each industrial refrigeration system will be equipped with different types of control equipment depending on its scale and level of sophistication. To implement this... how to adjust cold storage temperature To ensure accuracy and avoid compressor system malfunctions, please follow the standard 3-step technical procedure below:
Step 1 – Identify the type of control panel integrated into the electrical cabinet.
Before proceeding, you need to identify the control technology your system uses. Correctly identifying the device type will help you find the correct wiring diagram and parameter code table (such as F1-F6 or Set point):
- Analog controller: Using manual temperature control knobs, commonly found in older cold storage units or small refrigerators. The accuracy is low and it's difficult to monitor the actual temperature.
- Electronic/Digital Controller: The most popular models are Elitech (STC-8080H, STC-9200), Dixell, Fox, etc., which have LED displays showing numbers and function keys.
- PLC control panel system: Often used in large-scale cold storage facilities, it integrates an HMI touchscreen display, allowing for monitoring and operation. how to adjust cold storage temperature remotely via Internet/IoT.
Step 2 – How to accurately adjust the cold storage temperature.
Depending on the control panel's design, the steps for pressing the buttons will vary:
- For mechanical control panels: Simply turn the temperature indicator needle to the desired position. However, turn slowly and monitor its operation. refrigeration compressor To ensure the machine doesn't start up/stop too quickly.
- For digital controllers (Elitech, Dixell, Fox): 1. Press and hold the button "Set" (or the “Temp” button) for 3-5 seconds until the parameter code flashes. 2. Use the arrow keys. Up or Down To adjust to the desired storage temperature. 3. Press "Set" or "Enter" once again to save the settings. Note: If the machine still doesn't run after adjustment, check the "Hysteresis" parameter (compressor activation temperature deviation).
Step 3 – Testing and calibration using independent temperature sensors/meters
After application how to adjust cold storage temperature On the control panel, you shouldn't blindly trust the numbers displayed on the LED screen.
- Use independent measuring equipment: Use an infrared thermometer or data logger placed in hidden corners of the warehouse to check for temperature uniformity.
- Compare the specifications: If there is a significant difference between the set temperature and the actual temperature, your sensor may be misaligned or the system may be malfunctioning. industrial refrigeration There are problems with heat exchange.
If the temperature still doesn't reach the desired level after correct settings, please contact our team immediately. cold storage repair and maintenance Contact Tan Long for timely technical support.
Instructions on how to adjust the appropriate cold storage temperature according to each controller
Currently, the most popular temperature controllers include Ewelly EW 285, Elitech STC8080A, and MTC5080AIn this article, we will guide you how to install a temperature controller. Ewelly EW 285 and Elitech STC8080A.
Instructions on how to adjust the temperature of the Elitech STC8080A temperature controller
The menu navigation of a temperature controller typically includes the following function buttons:
- SET button: Used to display the value adjustment menu from F1 to F6 and is normally used to set the defrost cycle.
- RST button: Used to display the time for defrosting or to save or exit the digital setting process.
- Δ button: Used to check or switch items or parameters in value adjustment, usually related to upper limit temperature.
- Button ▽: Similar to the Δ button but is often used to check or toggle parameters related to the lower limit temperature.
The function setting operations are all performed in the same way as follows:
- Press and hold the SET button for a few seconds, the screen will display the menu with functions F1, F2, F3, F4, F5, F6.
- Move between functions by pressing the Δ / ▽ buttons.
- To set the value for each function, hold the SET button and then press p // q to increase/decrease the value.
- To set, press and hold SET until the display shows F1. When you want to set the temperature, press the SET button and then hold the triangle buttons to adjust.
Instructions on how to adjust the temperature of the Ewelly EW285 temperature controller
Menu Instructions:
- Set Temp Button: Set the shutdown temperature to the default level of -10ºC.
- D-temp button: Set the restart temperature to the default of 3ºC.
- DEF Cycle Button: Set the defrost cycle to the default of 6 hours.
- DEF Time button: Set the defrost time to the default of 10 minutes.
- Delay time button: Set the delay time in minutes.
- DEF exit temp button: Set the defrost temperature to the default level of 5ºC.
- Heat button: Forced defrost.
- Heat temp button: Adjust the temperature when defrosting.
- Time button: Displays the remaining time during defrosting.
- Set button: Toggle function settings.
- Up/down button: Increase/decrease value when setting.
The function setting operations are performed as follows:
- Press and hold the SET button for a few seconds until the function light comes on.
- To set the next items, continue pressing the SET button.
- To set the value in each function, use the Up / Down buttons to increase or decrease the required value.
What temperature should be maintained in a cold storage facility? A guide on how to adjust the cold storage temperature correctly for different types of goods.
Mastering how to adjust cold storage temperature It's not just about pressing a button; more importantly, you need to know what temperature is optimal for your product. Depending on the type of goods and storage time, experts at Tan Long We recommend that you set the temperature range according to the standards below to ensure food safety and save energy for the system. refrigeration compressor.
Below is a summary table of the temperature ranges you need to know before proceeding. how to adjust cold storage temperature:
| Type of goods | Ideal storage temperature | Installation purpose |
| Fresh meat, live seafood | 0°C to -2°C | Keeps food fresh and prevents short-term bacterial contamination. |
| Frozen food | -18°C to -25°C | Long-term storage ensures the core of the product is kept at a deep freezing temperature. |
| Fresh vegetables and fruits | 3°C to 8°C | Maintain moisture levels to prevent wilting or frost damage. |
| Milk and dairy products | 1°C to 4°C | Consider this solution: Cold storage for milk |
| Pharmaceuticals, Vaccines | 2°C to 8°C | Strictly adhering to GSP standards in healthcare. |
| Beverages (Beer, soft drinks) | 5°C to 12°C | Optimizes flavor and cooling during use. |
| Fresh flowers, cosmetics | 5°C to 8°C | Preventing flowering and chemical transformation. |
Reasons why it's necessary to adjust the cold storage temperature to the recommended range:
- Ensuring product quality: Each item has its own "freezing point". If you implement how to adjust cold storage temperature If the temperature is too low, vegetables will suffer damage to their cellular structure (freezing). Conversely, if the temperature is too high, bacteria will multiply rapidly, causing spoilage.
- Optimizing operating costs: Setting the temperature just 1°C lower than necessary can increase the system's power consumption by 5-10%. industrial cold storage.
- Protect the equipment: When you apply how to adjust cold storage temperature suitable for the design capacity, condenser This will reduce frost buildup, helping the compressor operate more smoothly and extending its lifespan.
>> Advice from Tan Long engineers: After changing the settings, you should monitor the system for at least 24 hours. If the actual temperature does not reach the adjusted level, the system may be losing heat. cold storage door Or a sensor malfunction. Please contact service immediately. cold storage repair to be processed promptly.
Important technical considerations when adjusting the temperature of a cold storage facility.
Setting the correct parameters on the controller is only a necessary condition. For the system to function... industrial cold storage To achieve optimal operation, save energy, and ensure food safety, technicians at Tan Long recommend a seamless integration of installation and practical operating principles. The essence of how to adjust cold storage temperature The key to efficiency lies in maintaining a stable thermal environment, minimizing the impact of sudden temperature fluctuations on the system. refrigeration compressorBelow are some key considerations that businesses should not overlook:
- Pre-process and cool down goods before warehousing: Cleaning, sealing, and pre-cooling the product helps limit bacterial growth and prevent "thermal shock." When food has an excessively high initial temperature, the system will have to operate at maximum capacity to compensate for the temperature, causing how to adjust cold storage temperature Your goal cannot be achieved in the short term.
- Completely eliminate gaps that cause heat loss: Always ensure cold storage door The unit should be sealed immediately after loading and unloading. You should periodically check the rubber gaskets, look for cracks in the panels, and install additional PVC curtains or air curtains to keep the temperature range under control, thereby significantly saving on your monthly electricity bill.
- Regular maintenance of the control system and ventilation fans: The electronic components in PLC control cabinet Or, if the sensors become dirty or aged, it will lead to display errors. Regularly cleaning the indoor unit and fan helps to improve cold air circulation, ensuring that the actual temperature always matches the temperature you have set. how to adjust cold storage temperature.
- Minimize frequent temperature adjustments: Making too many changes to the settings in a short period of time will cause the compressor to start and stop repeatedly, leading to equipment wear and tear and reducing the system's lifespan. Technicians should only adjust the temperature when absolutely necessary (e.g., changing the type of goods) and after thoroughly checking the insulation conditions of the warehouse.
Tan Long introduced the principles and guidelines. how to adjust cold storage temperature of 2 popular controllers today. If you need more information or support, please contact us via hotline (+84) 933357058We will be happy to advise and assist you.
>> See related article:
