16
SAFETY INSTRUCTIONS
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
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.
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