6
Prevent water leakage by ensuring drainage
pipe is:
- Connected properly,
- Kept clear of gutters and containers, or
- Not immersed in water
After a long period of use or use with any
combustible equipment, aerate the room
regularly.
After a long period of use, make sure the
installation rack does not deteriorate to
prevent the unit from falling down.
Remote control
Do not use rechargeable (Ni-Cd) batteries. It
may damage the remote control.
To prevent malfunction or damage of the
remote control:
• Remove the batteries if the unit is not going
to be used for a long period of time.
• New batteries of the same type must be
inserted following the polarity stated.
Power supply
Do not disconnect the plug by pulling the cord
to prevent electric shock.
Precaution for using R32 refrigerant
The basic installation work procedures are the same as
conventional refrigerant (R410A, R22) models.
1. Installation (Space)
• 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 offices for
proper handling.
Safety precautions
2. Servicing
2-1. Service personnel
• 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 recognised 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.
2-2. Work
• 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 #2-2 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
flammable 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 confined spaces.
• 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
flammable 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 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.
