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Notes:
— If any parts damage, please contact the dealer or a designated repair shop;
— In case of any damage, please turn off the air switch, disconnect the power
supply, and contact the dealer or a designated repair shop;
— In any case, the power cord shall be firmly grounded.
— To avoid the possibility of danger, if power cord is damaged, please turn off
the air switch and disconnect the power supply. It must be replaced from the
dealer or a designated repair shop.
INSTRUCTIONS FOR REPAIRING APPLIANCES CONTAINING R290
1. INFORMATION ON SERVICING
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. non-sparking,
adequately sealed or intrinsically safe.
1.5 Presence of fire extinguisher
If any hot work is to be conducted on the refrigeration equipment or any associated parts,
appropriate fire
extinguishing equipment shall be available to hand. Have a dry powder or CO₂ fire extinguisher
adjacent to the charging area.
1.6 No ignition sources
No person carrying out work in relation to a refrigeration system which involves exposing any
pipe work that contains or has contained flammable refrigerant shall use any sources of ignition
in such a manner that it may lead to the risk of fire or explosion. All possible ignition sources,
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