Refrigeration Systems | Common Issues And SolutionsPosted by Craft Group on September 5th, 2022 Your refrigeration system must work well. A malfunctioning system can cause a catastrophe for your company. System failures can be prevented with regular maintenance.
Things like Refrigeration Couplings can be found in fluid transfer applications to facilitate the maintenance of air conditioning systems.
The ideal applications include air conditioning and refrigeration systems, as well as split refrigeration and split beverage systems.
In the event of equipment failures, they are inevitable, and we must adapt accordingly. It is crucial to be aware of what to do in the event of an emergency.
Here are some typical issues with their solution that can arise with commercial refrigeration equipment.
Undercharging Refrigeration System IndicationYou can detect that a refrigeration system is undercharging when: It is because the compressor has been heating up, and performance decreases. Also, there is the possibility of a decrease in suction as well as the pressures of discharge.
Indication:
Causes:The leakage of refrigerant can lead to undercharging. Leakage of refrigerant may occur on the shaft, the flange couplings, and the gaskets of valves. The cause of undercharging could be obstructions at an expansion valve or the evaporator.
Solution:Look for leaks in refrigerant around the shaft seal, the flange couplings, as well as valve gaskets. Clean the driers and filters. Replace the lost refrigerant using a new refrigerant. Be sure to follow and adhere to the instructions of the manufacturer.
Overcharge of the Refrigeration SystemA refrigeration system that is overcharged is one that is running with more refrigerant than it is able to handle. These are signs that a system is overcharged.
Indication:
Causes:Overcharges in refrigeration systems can be caused by excessive refrigerant levels. Air in the system could cause an overcharge.
Solution:Remove the refrigerant that is too high out of the system. As a result, this can be accomplished by connecting a cylinder with a charging valve (liquid line).
The compressor should be started and operated on the charge valve.
If you believe that air is the reason for the overcharge, rectify it by cleaning the air.
Moisture within the SystemThe starving of refrigerant in the evaporator and rapid increase in pressure of the condenser causes the compressor to run shorter. So, clogging at the expansion valve filter.
Causes:The issue is caused by the infiltration of air into the system. The air’s humidity can make the expansion valve freeze. In turn, the refrigeration system could show indicators of overcharging. In addition, moisture may cause corrosion in the system.
Solution:If there is a small amount of moisture in the system, replace the gel with silica. It is also possible to remove the refrigerant and then pump out all air from the system.
Air in the SystemIndication:
Causes:Air could be introduced into the system during the charging process. Freon-12 has low working pressure. When you use freon-12, air leaks could occur on your suction lines.
Solution:It is possible to remove air from the system by using the condenser. Keep the condenser’s cooling water on. Let the air out at the very top of the condenser. Connect a collecting cylinder with the purging line. The line can be opened to let the air out.
After purging the air, make sure to close the purge valve securely. Verify your refrigerant level. Make sure that the refrigeration system is charged by using fresh refrigerant. Be sure to take all security precautions when you start the compressor.
Oil in the Refrigeration SystemIndication:
Causes:
Solution:
Refrigerant FloodingThe term “flooding” refers to the process of letting liquid back into the suction line of the compressor that cools refrigerant. So, the cause of this issue could be inadequately adjusted or damaged expansion valves.
Cause:It could also cause by leakage from the solenoid valve. The overcharging of the refrigerant system could also result in refrigerant flooding.
If the problem is not addressed If not addressed, flooding could cause ice to the evaporator or even damage the compressor.
Solution:The refrigerant is excessively leaking out of the system. It is possible to do this by connecting a cylinder with a charging valve (liquid line). The compressor should start and operate to charge the valve.
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