Maintenance of Cold Storage Cold Room
1. After the new installation or long-term shutdown of the cold storage and refrigeration equipment, comprehensive testing and debugging should be carried out before reuse. Under the guidance of professional refrigeration technicians, it can be started and used only when all indicators are normal.
Piston type Compressor Unit
2. Attention should be paid to the collision and scratching of hard objects on the cold storage body and outer body during use. Because it can cause dents and rust, and in severe cases,
Screw type Compressor Unit it can lead to a decrease in local insulation performance.
3. Due to the fact that prefabricated cold storage is composed of several insulation boards, there are certain gaps between the boards. During construction, these gaps will be sealed with sealant to prevent air and moisture from entering.Air Cooled type Condenser Unit So, in use, timely repair some sealing failure parts. We must resolutely prevent the occurrence of cold escape.
4. Generally, insulation boards are used for the floor of small prefabricated cold storage. When using a cold storage, a large amount of ice and water should be avoided on the ground.
Water Cooled type Condenser Unit If there is ice, hard objects should not be used to knock or damage the ground during cleaning.
5. Initial operation of the unit: It is necessary to regularly observe the oil level and return oil situation of the compressor, as well as the cleanliness of the oil. Evaporator UnitIf oil dirt or oil level drop is found, it should be promptly resolved to avoid poor lubrication.
6. Regularly clean the air cooler to maintain good heat exchange. Check if the motor and fan rotate flexibly. If there is any blockage, lubricating oil should be added; If there is abnormal friction sound, the bearings of the same model and specification should be replaced to clean the dirt on the fan blades, coils, and water accumulation plates. For the cold air unit, it is necessary to regularly check the condenser. If there is scaling problem, it should be promptly removed. Mobile Cold Room
7. For evaporators: it is necessary to regularly check the defrosting situation. Whether defrosting is timely and effective can affect the refrigeration effect, leading to liquid return in the refrigeration system.
8. Regularly observe the operating status of the compressor; Check its exhaust temperature. During seasonal operation, pay special attention to the operating status of the system and adjust the system's liquid supply and condensation temperature in a timely manner.
9. Carefully listen to the sound of the compressor and condenser fan during operation, promptly handle any abnormalities, and check the vibration of the compressor, exhaust pipe, and foundation. Check if the compressor has any abnormal odor.Refrigeration Project and Construction
10. In the initial stage, the internal cleanliness of the system was poor, and the refrigeration oil needs to be replaced after 30 days of operation. For systems with high cleanliness, it should be thoroughly replaced after six months of operation (depending on the actual situation).
11. The refrigeration technician conducts an annual inspection and maintenance of the compressor. Check the oil level and color of the compressor. If the oil level is lower than 1/2 of the sight glass, the cause of the oil leakage should be identified and the fault should be eliminated before filling with lubricating oil; If the oil has changed color, the lubricating oil should be thoroughly replaced. Check if there is air in the refrigeration system, and if so, discharge the air.
12. Regularly check and confirm whether the voltage of the power supply meets the requirements, and the voltage should be 380V ± 10% (three-phase four wire). When the cold storage equipment is not in use for a long time, the main power supply of the fresh-keeping cold storage should be cut off, and the cold storage equipment should be ensured not to be damp or contaminated by other substances such as dust.
13. Regularly check whether the connecting pipes and valves of the refrigeration unit are secure and whether there is refrigerant leakage (oil stains usually appear in the leaking areas).
