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Safety
Precautions
Page 7
precautions shall be complied with prior to conducting work on the system.
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.
6.Information on servicing
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
1.Transport of equipment containing flammable refrigerants
See transport regulations
2.Marking of equipment using signs
See local regulations
3.Disposal of equipment using flammable refrigerants
See national regulations.
4.Storage of equipment/appliances
The storage of equipment should be in accordance with the manufacturer's instructions.
5.Storage of packed (unsold) equipment
Storage package protection should be constructed such that mechanical damage to the equipment
inside the package will not cause a leak of the refrigerant charge. The maximum number of pieces of
equipment permitted to be stored together will be determined by local regulations.
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 area have been made safe by control of flammable
material.
4)Checking for presence of refrigerant
Explanation of symbols displayed on the unit(For the unit adopts R32/R290 Refrigerant only):
WARNING
CAUTION
CAUTION
CAUTION
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.
This symbol shows that the operation manual should be read carefully.
This symbol shows that a service personnel should be handling this equipment
with reference to the installation manual.
This symbol shows that information is available such as the operating manual or
installation manual.
Caution: Risk of fire/
flammable materials
(Required for R32/R290 units only)
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