loss and a refrigerant leak is possible.
• Discharge capacitors in a way that won’t cause any spark.
• 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.
• Fill with nitrogen up to atmospheric pressure.
• Put a label on the equipment that the refrigerant is removed.
e) 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
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