Stulz CeilAir CW - Recovering Refrigerant; Labeling Decommissioned Equipment

67OCH0006F08/13/2024
CEILAIR
®
CW & DX IOM
3.4.2 LABELING DECOMMISSIONED EQUIPMENT
6. Place the cylinder receiving the refrigerant on the scale before starting recovery.
7. Start the recovery machine and operate in accordance with manufacturer’s instructions.
8. Do not overfill cylinders. They should contain no more than 80% volume liquid charge.
9. Do not exceed the maximum working pressure of the cylinder, even temporarily.
10. After the cylinders have been filled correctly and the process completed, close all isolation valves and
make sure that the cylinders and the equipment are promptly moved off-site.
11. Recovered refrigerant must not be charged into another refrigeration system unless it has been cleaned
and checked.
3.4.1 Recovering Refrigerant
When removing refrigerant from a system, either for servicing or decommissioning, best practice is to remove
all refrigerants safely. Use the following recommended guidelines:
• 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 are
available and that all cylinders to be used are designated for the recovered refrigerant and labeled for
that refrigerant (i.e., special cylinders for the recovery of refrigerant). Cylinders must be complete with
pressure relief valve and associated shut-off valves in good working order. Empty recovery cylinders
must be evacuated and, if possible, cooled before recovery occurs.
• Recovery equipment must be in good working order with a set of instructions concerning the equipment
at hand, and the equipment must be suitable for recovering flammable refrigerants. In addition, a set
of calibrated weighing scales must be available and in good working order. Hoses must be complete
and in good condition with leak-free disconnect couplings. Before using the recovery machine, check
that it is in satisfactory working order, has been properly maintained and that any associated electrical
components are sealed to prevent ignition in the event of a refrigerant release. Consult manufacturer if
in doubt.
• Recovered refrigerant must 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 they have been evacuated to an
acceptable level to ensure no flammable refrigerant remains within the lubricant. The evacuation
process must be carried out prior to returning the compressor to the suppliers. Only electric heating of
the compressor body may be employed to accelerate this process. When oil is drained from a system, it
must be carried out safely.
3.4.2 Labeling Decommissioned Equipment
Equipment must be labeled stating that it has been decommissioned and emptied of refrigerant. The label
must be dated and signed. Ensure that there are labels on the equipment stating the equipment contains
flammable refrigerant.