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·Evacuate again
·Fill with nitrogen up to atmospheric pressure
·Put a label on the equipment that the refrigerant is removed.
Disposal
·Ensure sufficient ventilation at the working place.
·Remove the refrigerant. If the recovery is not required by national regulations, drain
the refrigerant to the outside. Take care that the drained refrigerant will not cause any
danger. In doubt, one person should guard the outlet. Take special care that drained
refrigerant will not float back into the building.
·Evacuate the refrigerant circuit.
·Purge the refrigerant circuit with nitrogen for 5 min.
·Evacuate again
·Cut out the compressor and drain the oil.
Transportation, marking and storage for units that employ flammable
refrigerants
Transport of equipment containing flammable refrigerants
Attention is drawn to the fact that additional transportation regulations may exist with
respect to equipment containing flammable gas. The maximum number of pieces
of equipment or the configuration of the equipment, permitted to be transported
together will be determined by the applicable transport regulations.
Marking of equipment using signs
Signs for similar appliances used in a work area generally are addressed by local
regulations and give the minimum requirements for the provision of safety and/or
health signs for a work location.
All required signs are to be maintained and employers should ensure that employees
receive suitable and sufficient instruction and training on the meaning of appropriate
safety signs and the actions that need to betaken in connection with these signs.
The effectiveness of signs should not be diminished by too many signs being placed
together. Any pictograms used should be as simple as possible and contain only
essential details.
Disposal of equipment using flammable refrigerants See national regulations.
Storage of equipment/appliances
The storage of equipment should be in accordance with the manufacturer's
instructions.
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