30-EN
29-EN
– 15 –
f) Make sure that cylinder is situated on the scales before
recovery takes place.
g)
Start the recovery machine and operate in accordance with
manufacturer’s instructions.
h)
Do not over
fi
ll cylinders. (No more than 80% volume liquid
charge.)
i) Do not exceed the maximum working pressure of the
cylinder, even temporarily.
j) When the cylinders have been
fi
lled correctly and the
process completed, make sure that the cylinders and the
equipment are removed from site promptly and all isolation
valves on the equipment are closed off.
k)
Recovered refrigerant shall not be charged into another
refrigeration system unless it has been cleaned and
checked.
18. Labelling
• Equipment shall be labelled stating that it has been
decommissioned and emptied of refrigerant.
• The label shall be dated and signed.
• Ensure that there are labels on the equipment stating the
equipment contains
fl
ammable refrigerant.
19. Recovery
• When removing refrigerant from a system, either for servicing
or decommissioning, it is recommended good practice that all
refrigerants are removed safely.
• When transferring refrigerant into cylinders, ensure that only
appropriate refrigerant recovery cylinders are employed.
• Ensure that the correct number of cylinders for holding the
total system charge are 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.
• 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 all appropriated
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
fl
ammable 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.
• Do not use the unit until it is con
fi
rmed that the portion from
which the refrigerant leaked is repaired.
• When installing, relocating, or servicing the air conditioner, use
only the speci
fi
ed refrigerant (R32) to charge the refrigerant
lines. Do not mix it with any other refrigerant and do not allow
air to remain in the lines.
