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The recovered refrigerant shall be returned to the refrigerant supplier in
the correct recovery cylinder, and the relevant Waste Transfer Note ar-
ranged. 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
ammable refrigerant does not remain within the lubricant. The evacua-
tion 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.
Decommissioning
Before carrying out this procedure, it is essential that the technician is
completely familiar
with the equipment and all its detail. It is recommended good practice
that all refrigerants
are recovered safely. Prior to the task being carried out, an oil and refrig-
erant sample shall
be taken in case analysis is required prior to re-use of reclaimed refriger-
ant. 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 han-
dling refrigerant cylinders;
. All personal protective equipment is available and being used cor-
rectly;
The recovery process is supervised at all times by a competent per-
son;
Recovery equipment and cylinders conform to the appropriate stan-
dards.
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 manufactur-
er‘s instructions.
h) Do not overll cylinders. (No more than 80 % volume liquid charge).
i) Do not exceed the maximum working pressure of the cylinder, even tem-
porarily.
5. MAINTENANCE AND INSPECTION
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