18
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 electrical 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 evacuated 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 employed to accelerate this
process. When oil is drained from a system, it shall be carried
out safely.
