52 PB
DECOMMISIONING OF UNITS
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 and tested prior to re-use.
NOTE: When breaking into the refrigerant circuit to make repairs or for any other purpose, conventional procedures shall be used.
However, for FLAMMABLE REFRIGERANTS (R-32 is classified in the A2L group for mildly flammable refigerants) it is important that best
practice is followed since flammability is a consideration.
Warning: Ensure sufficient ventilation at the repair place.
Warning: Ensure there are no open flame sources or hot surfaces that exceed 1200˚F in the work area.
Warning: Discharge capacitors in a way that won’t cause any spark. The standard procedure to short circuit
the capacitor terminals usually creates sparks.
1. Become familiar with the equipment and its operation.
2. Isolate system electrically.
3. 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.
4. Install a piercing valve to remove refrigerant from the sealed system.
5. Safely remove refrigerant following local and national regulations. Refer to refrigerant removal, recovery, and evacuation section of
this manual.
6. 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, ensure that there are labels on the equipment stating the equipment contains
FLAMMABLE REFRIGERANT.
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