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Question:

Different refrigerants may be mixed in the same recovery tank but not in disposal tank.

A False
explanation

Different refrigerants shall not be mixed in recovery or disposal refrigerant cylinders.

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Related Questions

What does a suction line in refrigeration system consist of?

Cool vapor

The inlet to the compressor in refrigeration system is called the suction line. This line brings the low pressure vapor into the compressor.

If the label identifying the refrigerant is missing, which of the following methods is used to identify the type of refrigerant?

Pressure–Temperature method

Saturated refrigerants have a specific pressure rating at a specific temperature. If both of these parameters are measured, correct refrigerant can be determined by looking at the pressure-temperature chart.

Volcanoes contribute a large quantity of Chlorine as compared to CFC’s. Chlorine is dissolved with water and comes down with rain.

False

Natural Sources contribute only 18% of the chlorine in the stratosphere. The remaining 82% is contributed by man-made sources. Unlike CFCs & HCFCs, Chlorine associated with natural sources generally dissolves in water/moisture and falls down.

______ nitrogen is used to pressurize the system.

Gaseous

Dry Nitrogen gas is used to pressurize the system for determining the leak & purging contaminants from the system.

The center port of the service manifold usually has ______ hose.

yellow

Service manifold consists of 3 hoses. Blue hose is for low-pressure side, red hose is for high-pressure hose and yellow hose (center) is for service (add or remove refrigerant or remove contaminants from the system).

A vacuum test allows air and moisture to enter the system if there is a leak.

True

This is the reason why vacuum test is not an ideal method for leak detection system.

What is measured by the compound gauge of gauge manifold set?

Low pressure

Compound gauge will be on the left side of the gauge manifold color coded blue. It is used on the low pressure side of the system.

Process involved for Reclamation and Recycling of refrigerants are the same.

False

Recycling refrigerant refers to the reduction of used refrigerant contaminants using devices that reduce oil, water, acidity, and particulates. Reclamation of refrigerants refers to the reprocessing of used refrigerants to ARI 700 specifications. Reclamation is different from recycled refrigerant, which involves process of single or multiple passes through devices like filter driers.

Longer hoses between the unit and the recovery machine _______ recovery time.

Increase

The longer the hose is, the higher the pressure drop in the system will be and the longer it will take time for recovery.

The instability of the ozone molecule allows free oxygen atoms to react easily with which of the following?

All the options are correct

The ozone molecule containing three oxygen atoms is unstable and can react with Chlorine, Bromine, Nitrogen & Hydrogen.

Only cylinders designated as “refillable” by the _______ can be used for refrigerant recovery.

Department of Transportation (DOT)

DOT approved cylinder shall be used for recovery of refrigerant and transportation of pressurized recovery refrigerant. Recovery cylinders will have grey bodies with yellow tops.

______ is used to the push-pull recovery method of refrigeration.

Dual-valve recovery tank

In push-pull recovery method, the refrigerant moves directly into the storage tank without any separation of oil from the refrigerant. Push-pull generally does not work on smaller systems.

Which of the following refrigerants is used in low pressure refrigerated appliance?

R-123

Low pressure appliances use a refrigerant with a liquid phase saturation pressure below 45 psia at 104°F.

At which of the following stages of the refrigeration system is the refrigerant in Warm liquid?

Liquid Line

Pipe or hose carries the refrigerant liquid from the condenser or receiver of a refrigeration system to a pressure-reducing device constitute liquid line. In liquid line refrigerant will be at warm liquid phase.

______ refrigerant can be transferred to another owner.

Reclaimed

Reclaimed refrigerant shall meet ARI 700 purity specifications. Reclamation facilities generally purchase used recovered refrigerant if they determine it can be reclaimed from technician. They sell technician other reclaimed refrigerant that is processed earlier and certified as pure as per ARI 700.