What is troubleshooting in refrigeration?

With any refrigeration system, there are a slew of miscellaneous problems that may occur, such as incorrect amperage, noncondensables in the system, oil problems, restrictions, and airflow issues.

What are the two basic problems of refrigeration systems?

4 Most Common Problems with Refrigeration Units

  • Not Cold Enough. One of the most common issues with these units is when they stop keeping your goods as cold as they need to be (or when they stop refrigerating whatsoever).
  • Frost or Ice Forming.
  • Too Much Noise.
  • Excessive Power Consumption.

What are the 5 major components in the basic refrigeration cycle?

The 6 Main Components of a Refrigeration System

  • Thermostatic Expansion Valve (TXV) Before the evaporator, this is located at the end of the liquid line.
  • Evaporator.
  • Capacity Control System.
  • Compressor.
  • Condenser.
  • Receiver.

What causes high liquid pressure?

Overcharging of refrigerant, liquid slugging of the compressor, oil contamination and other sources can damage compressor valves. Refrigerant overcharging will show up as high head pressure, normal suction line pressure, normal superheat, high sub-cooling.

What causes high refrigerant pressure?

Another possible cause is an excessive amount of refrigerant in the system, commonly referred to as an overcharge. This will cause the excess liquid refrigerant to take up condensing space, which will cause less space to condense the refrigerant, leading to an elevated discharge pressure.

What is the most common problem that enters a refrigerant system?

While there are many different potential causes of compressor failure, high compressor discharge temperatures represent one of the most common problems when it comes to commercial refrigeration.

What causes low pressure in refrigeration?

The two most common causes of low head pressure at an air conditioner or heat pump compressor motor are: Refrigerant under-charge, due to a refrigerant leak or improper charge. TXV (TEV) malfunction, over-metering refrigerant.

What causes high condensing pressure?

If condensing pressure is higher than normal with adequate water flow, (temperature of the water exiting the condenser lower than normal) it may be assumed the condensing surface is fouled. It must next be determined whether the fouling is on the inside or outside of the tubes.

What is superheat in refrigeration?

Superheat is a measured value. It is the difference between two temperatures. Superheat is measured as the difference between the actual temperature of the refrigerant vapor and the saturation temperature of the refrigerant at that same point.