Answer:
Recovering refrigerant from a mini split system is a critical process when performing maintenance or decommissioning the unit. In our experience, the process involves using a refrigerant recovery machine to safely extract and store the refrigerant. Begin by connecting the recovery machine and a refrigerant cylinder to the service ports on the outdoor unit using a manifold gauge set. After ensuring all connections are secure, start the recovery machine to draw refrigerant from the system into the recovery cylinder. Monitor the gauges to ensure all refrigerant is safely removed, and follow local regulations for proper handling and disposal.
More On How to Recover Refrigerant From a Mini Split:
Why Refrigerant Recovery is Important
Recovering refrigerant prevents environmental harm and complies with legal requirements regarding ozone-depleting substances. Proper recovery also allows the refrigerant to be reused or safely disposed of, reducing waste and costs.
Step-by-Step Guide:
- Gather Required Equipment:
- Refrigerant recovery machine
- Refrigerant recovery cylinder
- Manifold gauge set
- Hoses with appropriate fittings
- Prepare the System:
- Turn off the mini split and ensure the power supply is disconnected.
- Connect the Equipment:
- Attach the manifold gauge set to the service ports on the outdoor unit.
- Connect the recovery machine to the manifold gauges and the recovery cylinder.
- Purge Air from the System:
- Before starting, ensure no air remains in the hoses or recovery cylinder by purging the system.
- Start the Recovery Machine:
- Power on the recovery machine and open the service valves on the manifold gauges.
- Monitor the recovery process, ensuring refrigerant flows into the recovery cylinder.
- Monitor Pressure Levels:
- Observe the gauges to confirm all refrigerant is removed. The system should reach a vacuum state to indicate completion.
- Finalize the Process:
- Turn off the recovery machine and close all valves.
- Disconnect the equipment and inspect the system for any residual refrigerant.
Tips for Safe Refrigerant Recovery:
- Always use a recovery machine and cylinder rated for the type of refrigerant in your mini split.
- Follow local environmental regulations for refrigerant handling and disposal.
- Regularly inspect your recovery equipment for leaks or damage to ensure safety.
By performing refrigerant recovery correctly, you ensure environmental compliance and system integrity, making it an essential skill for mini split maintenance and servicing.
