Midea MP72SQWBA2RCM Owner's Manual page 7

Explanation of symbols displayed on the unit(For the unit adopts R32 Refrigerant only):
WARNING
refrigerant is leaked and exposed to an external ignition source, there is a risk
CAUTION This symbol shows that the operation manual should be read carefully.
This symbol shows that a service personnel should be handling this
CAUTION
equipment with reference to the installation manual.
This symbol shows that information is available such as the operating
CAUTION
manual or installation manual.
WARNINGS (for using R32 refrigerant only)
Transport of equipment containing ammable refrigerants.
•
See transport regulations.
• Marking of equipment using signs.
See local regulations.
• Disposal of equipment using ammable refrigerants.
See national regulations.
• Storage of equipment/appliances.
The storage of equipment should be in accordance with the manufacturer's
instructions.
• 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.
• Information on servicing.
1)Checks to the area
Prior to beginning work on systems containing ammable 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.
2)Work procedure
Work shall be undertaken under a controlled procedure so as to minimise the risk
of a ammable gas or vapour being present while the work is being performed.
3)General work area
All maintenance sta and others working in the local area shall be instructed on the
nature of work being carried out. Work in con ned spaces shall be avoided. The
area around the workspace shall be sectioned o . Ensure that the conditions within
the area have been made safe by control of ammable material.
4)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 ammable atmospheres.
Ensure that the leak detection equipment being used is suitable for use with
ammable refrigerants, i.e. non-sparking, adequately sealed or intrinsically safe.
5)Presence of re extinguisher
If any hot work is to be conducted on the refrigeration equipment or any associated
parts, appropriate re extinguishing equipment shall be available to hand. Have a
dry powder or CO2 re extinguisher adjacent to the charging area.
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