Qlima SM 22 DUO Operating Manual page 127

Explanation of symbols displayed on the unit(For the unit adopts R32/R290 Refrigerant
only):
INSTRUCTIONS FOR REPAIRING APPLIANCES CONTAINING
R290 / R32
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 area have been made safe by control of flammable material.
1.4 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 flammable
atmospheres. Ensure that the leak detection equipment being used is suitable
for use with flammable refrigerants, i.e. nonsparking, adequately sealed or
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intrinsically safe.
60
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.
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