JCB Refrigeration and Air Conditioning Mechanic Interview Questions and Answers

Gas charging is done to ensure proper functioning and efficiency of refrigeration systems.

• Gas charging is the process of adding refrigerant gas to a refrigeration system.

• It is necessary to maintain the correct amount of refrigerant in the system for optimal performance.

• Gas charging helps in achieving the desired cooling effect and temperature control.

• It also helps in preventing compressor damage due to low refrigerant ...read more

To check proper voltage, use a multimeter to measure voltage at the source and at the appliance.

• Use a multimeter to measure voltage at the source and at the appliance

• Check the voltage rating of the appliance to ensure it matches the source

• Ensure the voltage is within the acceptable range for the appliance

• Check for loose or damaged wiring that could affect voltage

The locations at the back side need to be checked.

• Check for any leaks or damage to the refrigerant lines

• Inspect the condenser coils for any dirt or debris buildup

• Ensure that the fan motor is functioning properly

• Check the compressor for any signs of wear or damage

• Inspect the evaporator coils for any frost buildup or blockages

Sweating problem in refrigeration can be caused by various factors.

• Check for proper insulation

• Ensure proper ventilation

• Check for refrigerant leaks

• Check for clogged air filters

• Check for faulty thermostat

• Check for overloading of the refrigeration unit

Checking biometal and timer is a routine task for a refrigeration technician.

• Inspect biometal for any signs of damage or wear.

• Check timer settings and ensure they are functioning properly.

• Replace biometal or timer if necessary.

• Ensure proper calibration of biometal and timer for optimal performance.