Evacuating the System
In this lesson, you’ll learn about how refrigerants should be handled so you to abide by the law and take care of the environment.
In this lesson, you’ll know how to store and safely handle cylinders, how to prevent incidents from happening, and what to expect and do if they should occur.
In this lesson, you will learn how to check for leaks and detect them, perform a pump-down and recover the refrigerant that is still left in the system.
In three steps, this lesson focuses on how to change cooler oil, and you will learn how to drain the oil and see the importance of the dryer and sight glass.
In this lesson, you will learn how to finish the reefer maintenance, by vacuum pumping the system for moisture, topping up the oil and adding new refrigerant.
In this lesson, you’ll learn about how refrigerants should be handled so you to abide by the law and take care of the environment.
In this lesson, you’ll know how to store and safely handle cylinders, how to prevent incidents from happening, and what to expect and do if they should occur.
In this lesson, you will learn how to check for leaks and detect them, perform a pump-down and recover the refrigerant that is still left in the system.
In three steps, this lesson focuses on how to change cooler oil, and you will learn how to drain the oil and see the importance of the dryer and sight glass.
In this lesson, you will learn how to finish the reefer maintenance, by vacuum pumping the system for moisture, topping up the oil and adding new refrigerant.
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Read more or useStep 3 of 3•2 minutes video
After pumping down the system (either from the service valve or from the recipient valve), you need to evacuate the cooling media still left in the system. Watch the movie clip to learn how to do this. Note that a recovery bottle should never be filled to more than 75%. Used HFC that has been contaminated should be recovered and sent ashore for destruction by a licensed operator.
If you are changing the dryer, the liquid sight glass, or the valve before the expansion valve, you need to perform a pump down of the complete system to the recipient/condenser. It is similar to a simple pump-down but takes longer.
As with the normal pump-down, you will need to evacuate the system from all remaining cooling media. Do not forget to close the valves on the recipient/condenser before you evacuate the system. Note that in small systems, like ACs, provisions storerooms, cooling units, and as in this case, a CO2 cooling unit, the condenser acts as a recipient where the cooling media can be stored during service.
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