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person;
•Recovery equipment and cylinders conform to the appropriate
standards.
d)
Pump down refrigerant system, if possible.
e)
If a vacuum is not possible, make a manifold so that refrigerant
can be removed from various parts of the system.
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 overfill 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 filled 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.
10.Labelling
Equipment shall be labelled stating that it has been de-commissioned
and emptied of refrigerant. The label shall be dated and signed.
Ensure that there are labels on the equipment stating the equipment
contains flammable refrigerant.
11.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 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. 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
