Cold rooms play a critical role in the storage of food, medicine and other sensitive products. However, the trouble-free operation of cold rooms is possible with regular maintenance and effective fault detection. In this article, we will provide detailed information about common faults in cold rooms, their symptoms and how to detect them.
1. Temperature Fluctuations
Symptoms:
The temperature inside the cold room is constantly changing.
Deterioration of products before their expected shelf life.
Possible Causes:
Thermostat fault.
Gas leak in the cooling system.
Inadequate insulation or doors not closing properly.
Detection Methods:
Check the Thermostat: Check if the thermostat is working properly. Make sure the thermostat settings are correct.
Gas Pressure Measurement: Check the gas pressure of the cooling system. Low gas pressure may indicate a gas leak.
Door and Insulation Check: Check whether the doors close properly and whether the insulation is sufficient.
2. Cooling Unit Failure to Work
Symptoms:
The cooling unit does not work at all or stops frequently.
Increase in temperature inside the cold room.
Possible Causes:
Electrical faults.
Engine or compressor failure.
Thermal protector is activated.
Detection Methods:
Electrical Connections: Check the electrical connections of the cooling unit. Check that the fuses are not blown and that the sockets are working properly.
Check the motor and compressor: Check that the motor and compressor are operating properly. If the motor is overheating or making strange noises, this could be a sign of a fault.
Thermal Protector: Check if the thermal protector has activated. This is a safety mechanism designed to prevent the motor from overheating.
3. Icing and Freezing Problems
Symptoms:
Excessive frost on the cold room evaporator or pipes.
Decrease in cooling capacity and increase in energy consumption.
Possible Causes:
Drain line clogging.
Malfunction of defrost system.
Refrigerant level is low.
Detection Methods:
Drain Line Check: Check if the drain line is clogged. A clogged drain line can prevent water from evaporating and cause ice to form.
Defrost System: Check if the defrost system is working properly. Test the functionality of the defrost timer and heater elements.
Refrigerant Level: Check the refrigerant level. Low levels can cause icing and reduced cooling capacity.
4. Humidity Problems
Symptoms:
High humidity levels inside the cold room.
Signs of mold or moisture on the surface of products.
Possible Causes:
Frequent opening and closing of doors.
Inadequate ventilation.
Inadequate operation of dehumidifiers.
Detection Methods:
Door Usage: Check how often doors are opened and closed. Frequently opening doors can cause humidity levels to rise.
Ventilation Check: Check if the ventilation system of the cold room is working properly. Make sure that air circulation is sufficient.
Dehumidifiers: Check the functionality of dehumidifiers. Make sure the filters are clean and the devices are working properly.
5. Coolant Leaks
Symptoms:
Decrease in cooling capacity.
Continuous operation of the cooling unit.
Possible Causes:
Leaks in pipes or joints.
Inadequate refrigerant filling.
Detection Methods:
Leak Test: Check the cooling system for leaks. Use leak detection spray or soapy water to detect gas leaks in pipes or joints.
Gas Pressure Measurement: Check the refrigerant pressure. Low pressure may indicate a gas leak.
Kaynak: Tunelgroup Cooling System
