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 […]
Problem Compressor Milky Oil in The Crankcase in Marine If there is an accumulation of milky coloured oil in the crankcase, it can be because of the following reasons : Water leakage from cylinder liner. Water leakage from jacket. Oil running hour is over. Crankcase sweating or frosting up Causes Liquid in suction line Expansion […]
Problem Compressor Overheating of Discharged Air in Marine If the temperature of the discharged compressed air is high, it can be because of overheating caused as a result of the following reasons: Chocked or dirty intercooler tube. Cooling water pump capacity decreased or insufficient. The atmosphere at air suction of compressor is hot. No forced […]
Problem Compressor Excessive Vibration and Noise in Marine If the compressor is generating too much of noise and vibration, it can be because of the following reasons: Loose pulley, flywheel, belt, belt guard, cooler, clamps or accessories. Lack of oil in the crankcase. Piston hitting the valve plate i.e reduced bumping clearance. Compressor holding down […]
Problem Compressor Oil Carry Over in Air in Marine If the compressed air in the system is carrying oil, would be mainly because of the following reasons : Oil separator is not working correctly hence oil is being carried to the air receiver. One item that could cause oil carry-over is that someone could be […]
Procedure of Testing Steering Gears on Ship Safety of the ship is the prime concern for seafarers onboard and for governing authorities like IMO. There have been many ship accidents in the past which includes collision, grounding, stranding etc. due to failure of one critical system- the steering gear. Hence crew must be careful in […]