Split type wall mounted air-conditioner / Owner’s Manual
45 / 220 EN
11
Maintenance Notice
C
Note:
For maintenance or 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 for appliance with R32 refrigerant. Ask repairer to
read after-sales technical service handbook for detailed information.
11.1 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. If 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.
11.2 Inspection of the Site
Safety inspection must be taken before 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 following precautions before operating the
system.
11.3 Operating Procedures
1. General work area:
All 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 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.