IRP U-SHAPE Series, User Manual

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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 refrigerant sample shall be taken in case analysis is required prior to
reuse of reclaimed refrigerant. It is essential that electrical power is available before the task is commenced.
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Become familiar with the equipment and its operation.
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Isolate system electrically.
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Before attempting the procedure, ensure that:
Mechanical 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.
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Pump down refrigerant system if possible.
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If a vacuum is not possible, make a manifold so that refrigerant can be removed from various parts of the system.
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Make sure that cylinder is situated on the scales before recovery takes place.
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Start the recovery machine and operate in accordance with
manufacturer’s instructions.
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Do not overfill cylinders. (No more than 80% volume liquid charge).
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Do not exceed the maximum working pressure of the cylinder, even temporarily. Make sure that the cylinders and
the equipment are removed from site promptly and all isolation valves on the equipment are closed off.
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Recovered refrigerant shall not be charged into another refrigeration system unless it has been cleaned and
checked.
Labelling
Equipment shall be labelled stating that it has been de-commissioned and emptied of refrigerant. The label shall be
dated and signed. For appliances containing FLAMMABLE REFRIGERANTS, ensures that there are labels on the
equipment stating the equipment contains flammable refrigerant.
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 (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 that is at
hand and shall be suitable for the recovery of all appropriate refrigerants including, when applicable, FLAMMABLE
REFRIGERANTS. In addition, a set of calibrated weighing scales shall be available and in good working order. Hoses
shall be completed with leak free disconnect couplings and in good condition. Before using the recovery machine,
check that it is in satisfactory working order, has been properly maintained and that any associated electrical
components are sealed to prevent ignition in the event of a refrigerant release. Call service center for technical support.
The recovered refrigerant shall be returned to the refrigerant supplier in the correct recovery cylinder, and the relevant
waste transfer not arranged. 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 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 form a system, it shall be carried out safely.