NewAir NAC12KWH03 Manual Del Propietário página 30

c) Ensure that: handling equipment is available, if required, for handling
refrigerant cylinders; all personal protective equipment is available and
being used correctly; the recovery process is supervised at all times by a
competent person; recovery equipment and cylinders conform to the
appropriate standards;
d) Pump down refrigerant system, if possible;
e) If a vacuum is not available, 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) Begin the recovery process and work 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 is complete,
make sure that the cylinders and the equipment are removed from the site
promptly and all isolation valves on the equipment are closed off;
k) Recovered refrigerant should not be charged into another refrigeration
system unless it has been cleaned and checked.
10. LABELLING
• Equipment should be labelled stating that it has been de-commissioned and
emptied of refrigerant. The label should be dated and signed.
• Ensure that there are labels on the equipment stating that 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 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 should be in good working order with a set of
instructions concerning the equipment at hand and should be suitable for
the recovery of flammable refrigerants. In addition, a set of calibrated
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