Vivax HPS-41CH120AERI/O3 R410a User Manual page 138

ENG
In case analysis is required prior to re‐use of reclaimed refrigerant. It is essential
that electrical power is available before the task is commenced.
a)
Become familiar with the equipment and its operation.
b)
Isolate system electrically
c)
Before attempting the procedure ensure that:

Mechanical handling equipment is available, if required, for handling
refrigerant cylinders; All personal protetive 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 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.
18)
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.
19)
Recovery
When removing refrigerant from a system, either for service or decommissioning,
it is recommended good practice that all refrigerants are removed safely.
When tranferring refrigerant into cylinders, ensure that only appropriate
refrigerant recovery cylinders are employed. Ensure that the correct numbers 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.
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