25
English
Safety precautions
1. Installation (Space)
• Product with
fl
ammable refrigerants, shall not
be installed in an unventilated space, if that
space is smaller than Amin (m²).
• In case of
fi
eld charge, the effect on
refrigerant charge caused by the different pipe
length has to be quanti
fi
ed, measured and
labelled.
• Must ensure the installation of pipe-work shall
be kept to a minimum. Avoid use dented pipe
and do not allow acute bending.
• Must ensure that pipe-work shall be protected
from physical damage.
• Must comply with national gas regulations,
state municipal rules and legislation. Notify
relevant authorities in accordance with all
applicable regulations.
• Must ensure mechanical connections be
accessible for maintenance purposes.
• In cases that require mechanical ventilation,
ventilation openings shall be kept clear of
obstruction.
• When disposal of the product, do follow to the
precautions in #12 and comply with national
regulations.
Always contact to local municipal of
fi
ces for
proper handling.
2. Servicing
2-1. Service personnel
• The system is inspected, regularly supervised
and maintained by a trained and certi
fi
ed
service personnel who is employed by the
person user or party responsible.
• Ensure the actual refrigerant charge size is in
accordance with the room size within which
the refrigerant containing parts are installed.
• Ensure refrigerant charge not to leak.
• Any quali
fi
ed person who is involved with
working on or breaking into a refrigerant
circuit should hold a current valid certi
fi
cate
from an industry-accredited assessment
authority, which authorizes their competence
to handle refrigerants safely in accordance
with an industry recognised assessment
speci
fi
cation.
• Servicing shall only be performed
as recommended by the equipment
manufacturer. Maintenance and repair
requiring the assistance of other skilled
personnel shall be carried out under the
supervision of the person competent in the
use of
fl
ammable refrigerants.
• Servicing shall be performed only as
recommended by the manufacturer.
2-2. Work
• Prior to beginning work on systems containing
fl
ammable refrigerants, safety checks are
necessary to ensure that the risk of ignition
is minimised.For repair to the refrigerating
system, the precautions in #2-2 to #2-8 must
be followed before conducting work on the
system.
• Work shall be undertaken under a controlled
procedure so as to minimize the risk of a
fl
ammable gas or vapour being present while
the work is being performed.
• All maintenance staff and others working
in the local area shall be instructed and
supervised on the nature of work being
carried out.
• Avoid working in con
fi
ned spaces. Always
ensure away from source, at least 2 meter of
safety distance, or zoning of free space area
of at least 2 meter in radius.
• Wear appropriate protective equipment,
including respiratory protection, as conditions
warrant.
• Ensure that the conditions within the area
have been made safe by limit of use of any
fl
ammable material. Keep all sources of
ignition and hot metal surfaces away.
2-3. 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
fl
ammable atmospheres.
• Ensure that the leak detection equipment
being used is suitable for use with
fl
ammable
refrigerants, i.e. non sparking, adequately
sealed or intrinsically safe.
• In case of leakage/spillage happened,
immediately ventilate area and stay upwind
and away from spill/release.
• In case of leakage/spillage happened, do
notify persons down wind of the leaking/
spill, isolate immediate hazard area and keep
unauthorized personnel out.
2-4. Presence of
fi
re extinguisher
• If any hot work is to be conducted on the
refrigeration equipment or any associated
parts, appropriate
fi
re extinguishing
equipment shall be available at hand.
• Have a dry powder or CO
2
fi
re extinguisher
adjacent to the charging area.
