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What is meant by restricting liquid refrigerant into a system when its charging HVAC?
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What is meant by restricting liquid refrigerant into a refrigeration system when charging?
Vaporizing the refrigerant
What is meant by restricting liquid refrigeration system when charging?
Vaporizing the Refrigerant
How is liquid refrigerant added to the refrigeration system when the system is out of refrigeration?
Liquid refrigerant charging of a system is normally accomplished in the liquid line. For example, when a system is out of refrigerant, liquid refrigerant can be charged into the king valve on the liquid line or receiver.
When charging an r12 system with freeze12 should you charge with gas or liquid?
if system is empty, u need to charge with correct amount of oil and refrigerant. the oil actually carries the refrigerant in the system if just recharging, buy the refrigerant that has oil already added, these are available at most auto stores
What state of refrigerant leaving the receiver of a refrigerant system?
Liquid
What is charging of a compressor?
It means charging the A/C system with the proper kind and amount of refrigerant + oil. Overcharging the system will damage the compressor.
Why is refrigerant vapor re introduced to the refrigeration system before refrigerant liquid?
To endure that the ONLY gas in the system is refrigerant.
When would a technician encounter freezing temperatures when working with liquid refrigerant?
When changing liquid refrigerant into a system
What component is closed during charging to prevent the flow of refrigerant to the low-pressure side of the refrigeration system?
The King valve is closed, starving the low pressure side, creating more vacuum while charging with a liquid
When charging a refrigeration system you add refrigerant on the low side or the high side?
Low
What is the disadvantage of a dial scale?
They are more difficult to use when charging refrigerant into a system and more calculations are necessary to determine the amount of refrigerant charged.
How do you correct when a compressor has lock up due to liquid charging?
Bleed off some of the refrigerant to get the system pressure down, then wait a while until any liquid refrigerant in the compressor has time to leak into the refrigerant loop. It may take a few minutes; since the compressor valves seal imperfectly, pressures will eventually equalize and it should be possible to start up the compressor again.
