Marine Refrigeration Systems The objective of any refrigeration system is to collect heat from a low temperature area and move it to a high temperature area. Refrigerant is a substance that acts as a cooling agent by absorbing and giving off heat. Usually there are two types of refrigeration systems commonly encountered : namely the […]
Reducing Oil Level in Compressor If the oil level in the compressor crank case of the refrigeration system is reducing within short intervals, this indicates leakage or increase in consumption of lube oil due to following reasons : Reasons Solutions Nozzle or filter clogged. Ensure that the nozzle in oil return line or filter in […]
Evaporator Coil Icing Another common problem in reefer system is icing of the evaporation coils which may happen due to : Reasons Solutions Too low temperature setting. Increase the coil temperature by adjusting TEV or it’s sensor. The coil capacity is less. Install large capacity evaporator coils. Defrost is not operational. Check if the defrost […]
Reduced Cooling Capacity If the cooling capacity of the plant has reduced and it is not being able to maintain the provision room or cargo hold temperature, following may be the causes : Reasons Solutions Inadequate refrigeration. Charge refrigerant in the circuit. Insufficient or damaged insulation in the room. Check and renew the insulation. Room […]
Compressor is Running Continuously The function of compressor in a refrigeration system is to act as a pump to circulate the refrigerant in the cooling circuit. It can happen that to maintain the cooling temperature in the rooms, the compressor is running continuously. If this happens following can be the causes for the same : […]
Compressor Start and Stops Frequently If while maintaining the correct temperature of the ship’s provision room or reefer cargo, the reefer compressor is frequently cutting-in and out, then such problem needs to be sorted out immediately. The most normal causes for such operation are : Reasons Solutions Wrong Setting of Cutouts : It may be […]
Refrigeration System Problem in Ship When the compressor in the reefer circuit starts and suddenly stops, it can be because of the following reasons : Reasons Solutions Low pressure cut out gets activated Ensure that all the suction line valves are in open condition, the refrigeration is properly charged and the low pressure cut out […]
