1
1-11-2-1-2
CAUTION
1. General
•
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 #11 and comply with national regulations.
•
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.
Always contact to local municipal offi
ces for proper handling.
•
Ensure the actual refrigerant charge is in accordance with the room size within which the refrigerant containing
parts are installed.
•
Ensure refrigerant charge not to leak.
•
Wear appropriate protective equipment, including respiratory protection, as conditions warrant.
•
Keep all sources of ignition and hot metal surfaces away.
2. Servicing
2-1. Quali
fi
cation of workers
•
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 recognized 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.
•
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.
2-2. Checks to the area
•
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 #2-3 to #2-7 must be followed before conducting work
on the system.
2-3. Work procedure
•
Work shall be undertaken under a controlled procedure so as to minimize the risk of a flammable gas or vapour
being present while the work is being performed.
2-4. General work area
•
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.
2-5. 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.
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