VIGO V52HD
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b. lsolate system electrically.
c. Before attempting the procedure ensure that: mechanical handling equipment is availa ble,
if required, for handling refrigerant cylinders; all personal protective equipment is availa
ble and being used correctly; the recovery process is supervised at all limes by a competent
person;recovery equipment and cylinders conform to the appropriate standards.
d. Pump down refrigerant system, if possible.
e. lf a vacuum is not possible, make a manifold so thai refrigerant can be rema ved 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 instruc tions.
h. Do not overfill cylinders. (No mare than 80 % volume liquid charge}.
i. Do not exceed the maximum working pres sure 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 rema ved from sile promptly and all isolation valves on
the equipment are closed off.
k. Recovered refrigerant shall not be charged inio another refrigeration system unless it has
been cleaned and checked.
10. LABELLING
Equipment shall be labelled stating thai it has been decommissioned and emptied of
refrigerant. The label shall be dated and signed. Ensure thai 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, il is
recommended good practice that all refrigerants are removed safely. When transferring
refrigerant inio cylinders, ensure thai only appropriate refrigerant recovery cylinders are
employed. Ensure thai the correct number of cylinders for holding the 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 shall be in good working order with a set of instructions concerning
the equipment thai 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 working order.
Hoses shall be complete with leakfree disconnect couplings and in good condition. Before
using the recovery machine, check thai il is in satisfactory working order, has been properly
maintained and thai any associated electrical components are sealed to prevent ignition in the
event of a refrigerant release. Consult manufacturer if in doubt.
The recovered refrigerant shall be returned to the refrigerant supplier in the correct recovery
cylinder, and the relevant Waste Transfer Note arranged. Do not mix refrigerants in recovery
units and especially not in cylinders. lf compressors or compressor oils are to be removed,
ensure that they have been evacuated to an acceptable level to make certain thai flammable
refrigerant does not remain within the lubricant. The evacuation 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, il shall
be carried out safely.