Panasonic CS-CZ25ZKE Service Manual page 6

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.

1. When disposal of the product, do follow to the precautions in #11 and comply with national regulations.

In case of field charge, the effect on refrigerant charge caused by the different pipe length has to be quantified, measured
and labelled.
Always contact to local municipal offices 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.
Servicing
2-1. Qualification of workers

Any qualified person who is involved with working on or breaking into a refrigerant circuit should hold a current valid
certificate from an industry-accredited assessment authority, which authorizes their competence to handle refrigerants
safely in accordance with an industry recognized assessment specification.

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
flammable refrigerants.

Servicing shall be performed only as recommended by the manufacturer.

The system is inspected, regularly supervised and maintained by a trained and certified 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 flammable 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 confined spaces. Always ensure away from source, at least 2 meter of safety distance, or zoning of free
2.
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 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.

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.
2-6. Presence of fire extinguisher

If any hot work is to be conducted on the refrigerating equipment or any associated parts, appropriate fire extinguishing
equipment shall be available at hand.

Have a dry powder or CO
2-7. 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. He/She must not be smoking when carrying out such work.

All possible ignition sources, including cigarette smoking, should be kept sufficiently far away from the site of installation,
repairing, removing and disposal, during which flammable refrigerant can possibly be released to the surrounding space.

Prior to work taking place, the area around the equipment is to be surveyed to make sure that there are no flammable
hazards or ignition risks.

"No Smoking" signs shall be displayed.
fire extinguisher adjacent to the charging area.
2
CAUTION
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