Install Instructions

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Safety Precautions
Page 11
WARNING (for using R290/R32 refrigerant only, continued)
10.) Once the cylinders have been filled correctly and the process has been completed,
ensure that the cylinders and equipment are removed from the site promptly,
and all isolation valves on the equipment are closed off.
11.) The recovered refrigerant should not be charged into another refrigeration system until
it has been cleaned and checked.
15. Labelling
Equipment should be labelled to state that is has been decommissioned and emptied of any and
all refrigerant. The label should be dated and signed. Ensure that there are still labels on the
equipment that states the equipment contains flammable refrigerant.
16. Recovery
When removing refrigerant from a system, either for servicing or decommissioning, it is
recommended, and good practice, to ensure all refrigerants are removed safely. When
transferring refrigerant into the cylinders, ensure that only appropriate refrigerant recovery
cylinders are used. Also, ensure that the correct number of cylinders, for holding the total system
charge, are available. All cylinders to be used are designated for the specific type of refrigerant to
be recovered and labelled for that refrigerant (i.e. special cylinders for the recovery of refrigerant).
Cylinders should be complete with a pressure relief valve and associated shut-off valves which
should be in good working order. Empty recovery cylinders are evacuated and cooled before
recovery occurs (if possible).
The recovery equipment should also be in good working order, with a set of instructions
concerning the specific equipment that is on hand, and that is suitable for the recovery of
flammable refrigerant. In addition, a set of calibrated weighing scales should be available and in
good working order. Hoses should be complete with leak-free disconnect couplings and in good
condition. Before using the recovery machine, ensure that it is in good 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.
The recovered refrigerant should 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 evacuated to an acceptable level to make certain that flammable refrigerant is
not present within the lubricant. The evacuation process should be carried out prior to returning
the compressor to the suppliers. Only electric heating to the compressor body should be
employed to accelerate this process. When oil is drained from a system, it should be done so
safely.