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Maintenance and repairs that require the assis-
tance of other qualified personnel must be per-
formed under the supervision of an individual
specified in the use of flammable refrigerants.
Appliances shall be installed,operated and stored
in a room with a floor area larger than 4 m
appliance shall be stored in a well-ventilated area
where the room size corresponds to the room area
as specified for operation.
Explanation of symbols displayed on the unit(For the unit adopts R32/R290 Refrigerant only):
INSTRUCTIONS FOR REPAIRING APPLIANCES CONTAINING R290
1
GENERAL INSTRUCTIONS
This instruction manual is intended for use by individuals possessing adequate
backgrounds of electrical, electronic, refrigerant and mechanical experience.
1.1 Checks to the area
Prior to beginning work on systems containing flammable refrigerants, safety
checks are necessary to ensure that the risk of ignition is minimised. For repair to
the refrigerating system, the following precautions shall be complied with prior to
conducting work on the system.
1.2 Work procedure
Work shall be undertaken under a controlled procedure so as to minimise the risk of a
flammable gas or vapour being present while the work is being performed.
1.3 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
4
area have been made safe by control of flammable material.
94
WARNING:
This symbol shows that this appliance used a flammable
refrigerant. If the refrigerant is leaked and exposed to an
external ignition source, there is a risk of fire.
CAUTION:
This symbol shows that the user manual should be read carefully.
CAUTION:
This symbol shows that the installation manual should be read
carefully.
CAUTION:
This symbol shows that the technical manual should be read carefully.
2
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