Important Considerations to Make in R-22 Recovery
The phase-out of the R-22 refrigerant has raised many concerns for everyone involved in the HVACR industry. Among these concerns is the proper recovery of this refrigerant. There are many options for refrigerant recovery but it’s important to engage licensed professionals for this activity.
Qualified professionals will undertake all recovery procedures cautiously and avoid possible health hazards. The professionals also ensure that the recovery process is done in accordance with the law. Stringent policies and serious consequences have been set to prevent any unapproved R-22 activity. It is also advantageous to contact an approved HVACR company for R-22 recovery as the company will advise you on what to do with the recovered refrigerant – reuse, reclaim, or resell.
IMPORTANT TIPS FOR R-22 RECOVERY
The first and most important consideration to make before starting the process is EPA compliance. Use of proper equipment is vital to a safe and successful recovery process. Efficient recovery of liquid and vapor refrigerant requires well-maintained recovery machines with appropriate recovery cylinders. Filters and driers should be replaced regularly to enable the machine to remove particulate matter and moisture. Proper labeling of cylinders is critical in ensuring compliance with the law. Cylinders must be DOT-approved and inspected and stamped every five years.
For the safety of everyone involved in the recovery activity, care should be taken during refrigerant transfers to avoid overfilling recovery cylinders. It is advisable to use scales for this purpose. To know the pressure rating of each cylinder, it is usually stamped on the collar or shoulder of the cylinder. For R-22, the pressure is 260psig.
RECOVERY METHODS FOR R-22 RECOVERY PROCESS
1. Push-pull recovery: This method is recommended for recovery of large volumes of liquid refrigerant (more than 10 pounds). The recovery unit pulls vapor from recovery cylinder and then produces discharge gas at high pressure. The gas quickly pushes liquid out of the HVAC system and back into the recovery cylinder. The push-pull recovery method cannot be used if the system is a heat pump, or if the system has a reversing valve. Also, if the system doesn’t allow a solid column of liquid to form, then this method is not recommended.
2. Vapor recovery: Refrigerant is removed from the system in vapor form. The vapor is then condensed into liquid before its transfer to the recovery cylinder. Vapor recovery is slower compared to liquid recovery. Most of the circulating oil is retained in the system and this is an important consideration if one intends to re-use the recovered refrigerant in another system. Vapor recovery, however, can cause higher cylinder pressure and increased temperatures. Consequently, there is a need to cool the tank, especially on hot days.
3. Liquid recovery: This is the fastest recovery method in which the refrigerant is transferred in its liquid state. However, not all recovery equipment can handle direct liquid recovery. The method is ideal for recovery of large amounts of refrigerant.
The R-22 recovery process basically involves ensuring that all procedures are compliant with EPA regulations, having the right and well-maintained equipment and choosing the appropriate recovery method. When these three procedures are done, there’s a high likelihood of success and compliance with the law.
If you are looking for Refrigerant R22 for sale, then the author of the article recommends Diversified Pure Chem.
Qualified professionals will undertake all recovery procedures cautiously and avoid possible health hazards. The professionals also ensure that the recovery process is done in accordance with the law. Stringent policies and serious consequences have been set to prevent any unapproved R-22 activity. It is also advantageous to contact an approved HVACR company for R-22 recovery as the company will advise you on what to do with the recovered refrigerant – reuse, reclaim, or resell.
IMPORTANT TIPS FOR R-22 RECOVERY
The first and most important consideration to make before starting the process is EPA compliance. Use of proper equipment is vital to a safe and successful recovery process. Efficient recovery of liquid and vapor refrigerant requires well-maintained recovery machines with appropriate recovery cylinders. Filters and driers should be replaced regularly to enable the machine to remove particulate matter and moisture. Proper labeling of cylinders is critical in ensuring compliance with the law. Cylinders must be DOT-approved and inspected and stamped every five years.
For the safety of everyone involved in the recovery activity, care should be taken during refrigerant transfers to avoid overfilling recovery cylinders. It is advisable to use scales for this purpose. To know the pressure rating of each cylinder, it is usually stamped on the collar or shoulder of the cylinder. For R-22, the pressure is 260psig.
RECOVERY METHODS FOR R-22 RECOVERY PROCESS
1. Push-pull recovery: This method is recommended for recovery of large volumes of liquid refrigerant (more than 10 pounds). The recovery unit pulls vapor from recovery cylinder and then produces discharge gas at high pressure. The gas quickly pushes liquid out of the HVAC system and back into the recovery cylinder. The push-pull recovery method cannot be used if the system is a heat pump, or if the system has a reversing valve. Also, if the system doesn’t allow a solid column of liquid to form, then this method is not recommended.
2. Vapor recovery: Refrigerant is removed from the system in vapor form. The vapor is then condensed into liquid before its transfer to the recovery cylinder. Vapor recovery is slower compared to liquid recovery. Most of the circulating oil is retained in the system and this is an important consideration if one intends to re-use the recovered refrigerant in another system. Vapor recovery, however, can cause higher cylinder pressure and increased temperatures. Consequently, there is a need to cool the tank, especially on hot days.
3. Liquid recovery: This is the fastest recovery method in which the refrigerant is transferred in its liquid state. However, not all recovery equipment can handle direct liquid recovery. The method is ideal for recovery of large amounts of refrigerant.
The R-22 recovery process basically involves ensuring that all procedures are compliant with EPA regulations, having the right and well-maintained equipment and choosing the appropriate recovery method. When these three procedures are done, there’s a high likelihood of success and compliance with the law.
If you are looking for Refrigerant R22 for sale, then the author of the article recommends Diversified Pure Chem.
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