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• Pump down refrigerant system, if possible.
• If a vacuum is not possible, make a manifold so that refrigerant can be
removed from various parts of the system.
• Make sure that cylinder is situated on the scales before recovery takes
place.
• Start the recovery machine and operate in accordance with
manufacturer's instructions.
• Do not overfill cylinders. (No more than 80% volume liquid charge).
• Do not exceed the maximum working pressure of the cylinder, even
temporarily.
• When the cylinders have been filled correctly and the process
completed, make sure that the cylinders and the equipment are
removed from site promptly and all isolation valves on the equipment
are closed off.
•
Recovered refrigerant should not be charged into another refrigeration
system unless it has been cleaned and checked.
10. Labeling
Equipment should be labeled stating that it has been de-commissioned and
emptied of refrigerant. The label should be dated and signed. Ensure that
there are labels on the equipment stating the equipment contains flammable
refrigerant.
11. Recovery
When removing refrigerant from a system, either for servicing or
decommissioning, it is recommended good practice that all refrigerants are
removed safely.
When transferring refrigerant into cylinders, ensure that only appropriate
refrigerant recovery cylinders are employed.
Ensure that the correct number of cylinders for holding the total system
charge is available. All cylinders to be used are designated for the
recovered refrigerant and labelled for that refrigerant (i.e. special cylinders
for the recovery of refrigerant). Cylinders should be complete with pressure
relief valve and associated shut-off valves in good working order. Empty
recovery cylinders are evacuated and, if possible, cooled before recovery
occurs.
The recovery equipment should be in good working order with a set of
instructions concerning the equipment that is at hand and should be suitable
for the recovery of flammable refrigerants. In addition, a set of calibrated
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