Refrigeration - Liquid and suction line components

Which is a Suction accumulator ?

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Which should be fitted after a compressor burnout?

• Oil separator

• Solenoid valve

• TEV

• Suction drier

Answer explanation

A suction drier should be fitted after a compressor burnout because it helps remove contaminants, such as acids and moisture, from the refrigerant system. This prevents further damage to the compressor and other components. Oil separators, solenoid valves, and TEVs are not specifically designed for this purpose and would not be the appropriate choice after a compressor burnout.

A suction line drier is primarily fitted to remove

•  Acid

• Copper particles

• Oil

• Wax

Answer explanation

A suction line drier is primarily fitted to remove acid from the refrigeration system. Acid can cause damage to the compressor and other components, leading to system failure. The drier effectively filters out acid, protecting the system and ensuring its efficient operation.

What device is used to protect the compressor flood back

• EPR

• Oil separator

• Suction line accumulator

• CPR

Answer explanation

A suction line accumulator is used to protect the compressor from flood back. It collects excess liquid refrigerant and prevents it from entering the compressor, which could cause damage. The other options, EPR, oil separator, and CPR, do not serve this specific purpose.

Which is a Non Return valve ?

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5)          A Evaporator Pressure Regulator (EPR) is designed to

• Maintain a constant crankcase pressure

• Maintain a constant subcooling value

• Maintain a minimum evaporating pressure/Temperature

• Maintain a minimum evaporator superheat

Answer explanation

The question asks about the function of an Evaporator Pressure Regulator (EPR). The correct answer is that an EPR is designed to maintain a minimum evaporating pressure. This means that the EPR ensures the pressure in the evaporator does not fall below a certain level, which is crucial for the proper functioning of the system.

Which is a EPR ?

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The liquid line solenoid valve is what type of valve

• Permanent magnet

• Modulating

• Electro magnetic

• Thermostatic

Answer explanation

The liquid line solenoid valve is an electromagnetic valve. It operates by using an electric current to generate a magnetic field, which in turn controls the opening and closing of the valve. This type of valve is commonly used in refrigeration and air conditioning systems to control the flow of refrigerant. The other options, such as permanent magnet, modulating, and thermostatic valves, do not accurately describe the liquid line solenoid valve.

Which is the recommended order of the liquid line components?

• Mag valve/sight glass/drier

• Mag valve/drier/sight glass

• Sight glass/mag valve/drier

• Drier/ mag valve/sight glass

Answer explanation

The recommended order of the liquid line components is Drier, Mag valve, and Sight glass. This arrangement ensures that the refrigerant is first dried and filtered by the drier, then controlled by the mag valve, and finally, the sight glass allows for visual inspection of the refrigerant condition and flow.

Which is a CPR ?

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