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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.
• 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 leakfree
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
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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.
• Service shall only be performed
as recommended by the
equipment manufacturer.
Maintenance and repair
operations requiring the
assistance of other skilled
personnel shall be carried out
under the supervision of the
person competent in the use of
flammable refrigerants.
• Any person who is involved
with working on or breaking
into a refrigerant circuit should
hold a current valid certificate
from an industry-accredited
assessment authority, which
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