d.
If a vacuum is not possible, make a manifold so that refrigerant can be removed from
various parts of the system.
f.
Make sure that cylinder is situated on the scales before recovery takes place.
g.
Start the recovery machine and operate in accordance with manufacturer's instructions.
h.
Do not overfill cylinders. (No more than 80 % volume liquid charge).
i.
Do not exceed the maximum working pressure of the cylinder, even temporarily.
j.
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.
k.
Recovered refrigerant shall not be charged into another refrigeration system unless
it has been cleaned and checked.
Equipment shall be labelled stating that it has been de-commissioned and emptied of
refrigerant. The label shall be dated and signed. Ensure that there are labels on the
equipment stating the equipment contains flammable refrigerant.
Labelling
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 shall 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 shall be in good working order with a
set of instructions concerning the equipment that is at hand and shall be suitable for the
recovery of flammable refrigerants. In addition, a set of calibrated weighing scales shall
be available and in good working order. Hoses shall be complete with leak-free disconnect
couplings and in good condition. Before using the recovery machine, check that it is in
satisfactory working order, has been properly maintained and that any associated elec-
trical components are sealed to prevent ignition in the event of a refrigerant release.
Consult manufacturer if in doubt. The recovered refrigerant shall be returned to the
refrigerant supplier in the correct recovery cylinder, and the relevant Waste Transfer
Note arranged. Do not mix refrigerants in recovery units and especially not in cylinders.
If compressors or compressor oils are to be removed, ensure that they have been evac-
uated to an acceptable level to make certain that flammable refrigerant does not remain
within the lubricant. The evacuation process shall be carried out prior to returning the
compressor to the suppliers. Only electric heating to the compressor body shall be emp-
loyed to accelerate this process. When oil is drained from a system, it shall be carried
out safely
Recovery
Your home in sync
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