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If you are going to purge the system using nitrogen, rather than evacuating the system with a vacuum pump, you will first need to remove the refrigerant gas without releasing it to the atmosphere.

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Q: What must you do before you introduce nitrogen into a refrigeration system?
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Related questions

Where the refrigeration changes in a refrigeration system?

at the metering device before the evaporator


Why must nitrogen be used only with a regulator when it is charged into a system?

Nitrogen must also have its pressure regulated before it can be used. The pressure in the cylinder is too great to be connected to a system. If a person allowed nitrogen under cylinder pressure to enter a refrigeration system, the pressure could burst some weak point in the system.


Why must nitrogen used only with regulator when it is charged into a system?

Nitrogen must also have its pressure regulated before it can be used. The pressure in the cylinder is too great to be connected to a system. If a person allowed nitrogen under cylinder pressure to enter a refrigeration system, the pressure could burst some weak point in the system.


What an accumulator in refrigeration system?

right before the compressor


When pressurizing a refrigeration system with nitrogen what rule should you always follow?

charge through a pressure regulator


When pressurizing a refrigeration system with nitrogen what rule should always follow?

charge through a pressure regulator


Where does the pressure in a refrigeration system change?

at the metering device before the evaporator


Pressure in a refrigeration system is changed where?

pressure in a refrigeration system is changed in the


Why is refrigerant vapor re introduced to the refrigeration system before refrigerant liquid?

To endure that the ONLY gas in the system is refrigerant.


Why COP is used for evaluation of compression refrigeration system but not absorption refrigeration system?

cause its a gas


What does the evaporator do in the refrigeration system?

An evaporator in a refrigeration system works by passing warm air over it's coils.


What is cryogenic refrigeration?

Cryogenic refrigeration is refrigeration which uses freezing mixtures such as dry ice, soilid co2, liquid co2, or liquid nitrogen. In the liquid co2 or liquid nitrogen method, a compartment is fitted with a temperature sensing element that can be preset. This is in turn connected to a control panel which activates liquid co2 or liquid nitrogen cylinder fitted with regulators to release the refrigerant. This is delivered through a spray header into the compartment until the desired temperature is achieved.