system charge is available. All cylinders to be used are
designated for the recovered refrigerant and
labelled for that
refrigerant (i.e. special cylinders for the recovery of refrigerant).
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. T
he
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. T
he
recovered
refrigerant
shall
be
returned
to
the
refrigerant
supplier
in
the correct
recovery
cylinder,
and
the
relevant
Waste
tr
ransfer
n
ote
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. T
he
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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