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Attention:
Far maintenance ar scrap, please contact authorized service centers.
Maintenance by unqualified person may cause dangers.
Feed air conditioner with R32 refrigerant, and maintain the air conditioner in strictly
accordance with manufacturer's requirements. The chapter is mainly focused on special
maintenance requirements far appliance with R32 refrigerant. Ask repairer to read
afler-sales technical service handbook far detailed infarmation.
Qualification requirements of maintenance personnel
1.Special training additional to usual refrigerating equipment repair procedures is
required when equipment with flammable refrigerants is affected. In many countries,
this training is carried out by national training organisations that are accredited to
teach the relevant national competency standards that may be set in legislation. The
achieved competence should be documented by a certificate.
2.The maintenance and repair of the air conditioner must be conducted according to the
method recommended by the manufacturer. lf other professionals are needed to help
maintain and repair the equipment, it should be conducted under the supervision of
individuals who have the qualification to repair AC equipped with flammable refrigerant.
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Safety inspection must be taken befare maintaining equipment with R32 refrigerant to
make sure the risk of fire is minimized. Check whether the place is well ventilated,
whether anti-static and fire prevention equipment is perfect.
While maintaining the refrigeration system, observe the fallowing precautions befare
operating the system.
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1.General work area:
AII maintenance staff and others working in the local area shall be instructed on the
nature of 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.
2. Checking far 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 far use with all
applicable refrigerants, i.e.non-sparking, adequately sealed ar intrinsically safe.
3.Presence of fire extinguisher:
lf any hot work is to be conducted on the refrigeration equipment ar any associated
parts, appropriate fire extinguishing equipment shall be available to hand. Have a dry
powder or C02 fire extinguisher adjacent to the charging area.
lnspection of the Site
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Operating Procedures
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Maintenance Notic
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