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10. Labelling
The equipment must be labelled stating that it has been taken out of service and
drained of refrigerant. The labelling must be dated and signed. Ensure that there are
labels on the equipment stating that the equipment contains flammable refrigerant.
11. Recovery
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When refrigerant is removed from a system, either for service or decommissioning,
it is recommended good practice that all refrigerants are removed safely.
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When transferring refrigerant to cylinders, ensure that only suitable refrigerant-
recovery cylinders are used. Ensure that the correct number of cylinders is available
to support the total load of the system. All cylinders to be used are designated for
the recovered refrigerant and labelled for that refrigerant (i.e., special refrigerant
recovery cylinders). Cylinders must be completed with pressure-relief valves and
associated shut-off valves in good working order. Empty recovery cylinders are
evacuated and, if possible, cooled before recovery takes place.
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Recovery equipment must be in good working order with a set of instructions
concerning the equipment at hand and must be suitable for the recovery of
flammable refrigerants. In addition, a set of calibrated weighing scales must be
available and in good working order. Hoses must be complete with disconnect
couplings free of leakage and in good running order. Before using the recovery
machine, check that it is in good running order, properly maintained, and that
all associated electrical components are sealed to prevent ignition in the event of
refrigerant release. Consult the manufacturer in case of doubt.
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The flammable refrigerant must be returned to the refrigerant supplier in
the correct recovery cylinder, and the applicable waste transfer note must be
provided. Do not mix refrigerants in recovery units and especially not in cylinders.
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If compressors and compressor oils are to be removed, ensure that they have
been drained to an acceptable level so that no flammable refrigerant remains
within the lubricant. The evacuation process must be carried out before returning
the compressor to the suppliers. Only electrical heating of the compressor body
should be used to accelerate this process. When oil is drained from a system, it
must be done in a safe manner.
EVVO CLIMA 9000/12000/18000/24000
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