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Label:
The unit shall be labeled with data and note after scrapping and discharging refrigerant. Make
sure the label on the unit can reflect the R32 refrigerant which it has been filled.
Recycle:
It's recommended to remove the refrigerant from the system before maintenance and disposal.
To recycle, put the refrigerant into the specialized refrigerant tank with refrigerant label. The
refrigerant tank shall be equipped with pressure-relief valve and cut-off valve, if they are in
good condition. If possible, the empty tank should be dealt with vacuum pumping before using
and keep it at normal temperature.
Recycling device shall be kept in good working status and equipped with operation instructions
for reference. The device shall be applicable for the recycle of R32 refrigerant. In addition, qua-
lified weighing apparatus which can be used normally shall be prepared. The hose shall adopt
removable connector without leakage for connection and keep it in good status. Check if the
recycling device is in normal status before using it and if it is properly stored with all electrical
components sealed to prevent fire hazard caused by refrigerant leakage. If you have any question,
please consult a qualified technician.
The recycled refrigerant shall be put in proper containers attached with transportation instruc-
tion and send it back to the refrigerant manufacturer. Do not mix different refrigerants in the
refrigerant recycle device, especially the refrigerant tank.
When disassembling the compressor or clearing the compressor oil, make sure the compressor
has been dealt with vacuum pumping to suitable level, so that no R32 refrigerant remains in the
lubricant. Vacuum pumping shall be done before the compressor is sent back to the supplier. Only
electric heating can be adopted for heating the shell of compressor to speed up the course. When
oil is drained from the system, please ensure safety.
Additional Information for Maintenance
Must be done by a qualified technician
Area Check
Prior to beginning work on systems containing FLAMMABLE REFRIGERANTS, safety checks are
necessary to ensure that the risk of ignition is minimised.
General Work Area
• All maintenance staff and others working in the local area shall be instructed on the nature
of the work being carried out.
• Work in confined spaces shall be avoided.
• The area around the workspace shall be sectioned off.
• Ensure that the conditions within the area have been made safe by control of flammable
material.
Checking for presence of refrigerant
The area shall be checked with an appropriate refrigerant detector prior to and during work,
to ensure the technician is aware of potentially toxic or flammable atmospheres. Ensure that
the leak detection equipment being used is suitable for use with all applicable refrigerants
(i.e. non-sparking, adequately sealed or intrinsically safe).
