1.Common faults and solutions of refrigeration systems

1）Water pressure alarm

Reason for malfunction: Insufficient cooling water supply pressure or malfunctioning water supply pump; Water pressure controller malfunction.

Solution: Increase external water supply pressure or repair the water supply pump; Check if the contacts of the pressure controller are functioning properly or if there are any other issues with their wiring.

2）High voltage alarm

cause of failure:Scaling inside the condenser leads to a decrease in heat transfer efficiency; The temperature of the cooling water is too high or the amount of cooling water is insufficient; When the compressor is working, the low-pressure pipeline leaks, causing external air to enter the refrigeration system.

Solution: Clean the cooling water pipeline of the condenser; Reduce the cooling water temperature or increase the water flow rate; Perform leak detection on the refrigeration pipeline. If this operation cannot be achieved during operation, the shut-off valve above the water condenser can be opened to allow a portion of the air present in the condenser to be discharged.

2.Common faults and solutions of vacuum system

1）The airtightness of the system has decreased, resulting in leakage. Find the leakage point, and after finding the leakage point, repair the leakage, replace the sealing ring or replace the valve.

2）The performance of the vacuum pump has decreased, and the vacuum pump oil has been contaminated. If the oil level drops and emulsification occurs, the oil volume should be increased immediately or the vacuum pump should be replaced, and the cause of contamination should be identified. If the vacuum pump sucks in a small amount of water, the gas damper can be opened0.5-1hObserve whether the appearance of the vacuum pump oil has improved and whether the vacuum degree continues to decrease. If the vacuum pump oil element is significantly improved after multiple replacements, it is necessary to inspect the vacuum pump.