NewAir NAC12KWHD3 Owner's Manual page 29

9. DECOMMISSIONING
Before carrying out this procedure, it is essential that the technician is
completely familiar with the equipment and all components. It is
recommended good practice that all refrigerants are recovered safely. Prior to
the task being carried out, an oil and refrigerant sample should be taken in case
analysis is required prior to re-use of reclaimed refrigerant. It is essential that
electrical power is available before the task is undertaken. Please adhere to the
following steps for carrying out this procedure:
a) Become familiar with the equipment and its operation;
b) Isolate electrical system;
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.
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