General Information; Before Operating - Carrier XPOWER 42ADF025 Service Manual

2.1 Before Operating

Precautions for safety
Ensure that all Local, National and International regulations are
satisfied.
• Read this "PRECAUTIONS FOR SAFETY" carefully before
Installation.
• The precautions described below include the important items
regarding safety. Observe them without fail.
• After the installation work, perform a trial operation to check for
any problem. Follow the Owner's Manual to explain how to use and
maintain the unit to the customer.
• Turn off the main power supply switch (or breaker) before the unit
maintenance.
• Ask the customer to keep the Installation Manual together with the
Owner's Manual.
CAUTION:
• This air conditioner adopts the new HFC refrigerant (R410A)
which does not destroy ozone layer.
The characteristics of R410A refrigerant are ; easy to absorb water,
oxidizing membrane or oil, and its pressure is approx. 1.6 times
higher than that of refrigerant R22.
Accompanied with the new refrigerant, refrigerating oil has also
been changed.
Therefore, during installation work, be sure that water, dust, former
refrigerant, or refrigerating oil does not enter the refrigerating cycle.
To prevent charging an incorrect refrigerant and refrigerating oil, the
sizes of connecting sections of charging port of the main unit and
installation tools are charged from those for the conventional
refrigerant. Accordingly the exclusive tools are required for the new
refrigerant (R410A).
• Connect indoor and outdoor units with field-supplied copper pipes
by means of flare connections. Use insulated seamless refrigeration
grade pipe only, (Cu DHP type according to ISO1337), degreased
and deoxidized, suitable for operating pressures of at least 4200
kPa and for burst pressure of at least 20700 kPa. Under no
circumstances must sanitary type copper pipe be used.
Moreover, do not use the existing piping because there are
problems with pressure-resistance force and impurity in it.
• Check that the impedance of the mains power supply is in
conformance with the unit power input indicated in the electric
data (EN 61000-3-11).
• This unit complies with low-voltage (EEC/73/23) and
electromagnetic compatibility (EEC/89/336) directives.
• This appliance must be connected to the main power supply by
means of a switch with a contact separation of at least 3 mm.
The installation fuse (25A D type ) must be used for the power
supply line of this conditioner.
WARNING:
• Ask an authorized dealer or qualified installation professional to
install/maintain the air conditioner. Inappropriate installation may
result in water leakage, electric shock or fire.

General Information

• Turn off the main power supply switch or breaker before
attempting any electrical work. Make sure all power switches are
off. Failure to do so may cause electric shock.
• When moving the air conditioner for the installation into another
place, be very careful not to enter any gaseous matter other than
the specified refrigerant into the refrigeration cycle.
• If air or any other gas is mixed in the refrigerant, the gas
pressure in the refrigeration cycle becomes abnormally high and
it may cause pipe burst and injuries on persons.
• Do not modify this unit by removing any of the safety guards or
by by-passing any of the safety interlock switches.
• After unpacking the unit, examine it carefully for possible
damage.
• Do not install in a place that might increase the vibration of the
unit.
• To avoid personal injury (with sharp edges), be careful when
handling parts.
• Perform installation work properly according to the Installation
Manual.
Inappropriate installation may result in water leakage, electric
shock or fire.
• When the air conditioner is installed in a small room, provide
appropriate measures to ensure that the concentration of
refrigerant leakage occurred in the room does not exceed the
critical level.
• Install the air conditioner securely in a location where the base
can sustain the weight adequately.
• If the air conditioner is not installed correctly, accidents may
occur due to the falling unit.
• If refrigerant gas has leaked during the installation work,
ventilate the room immediately.
If the leaked refrigerant gas comes in contact with fire, noxious
gas may generate.
• After the installation work, confirm that refrigerant gas does not
leak. If refrigerant gas leaks into the room and flows near a fire
source, such as a cooking range, noxious gas might generate.
• Electrical work must be performed by a qualified electrician in
accordance with the Installation Manual.
• Use the specified cables for wiring and connect them firmly to
the terminals.
To prevent external forces applied to the terminals from affecting
the terminals.
• Be sure to provide grounding. Do not connect ground wires to
gas pipes, water pipes, lightning rods or ground wires for
telephone cables.
• Do not install the air conditioner in a location subject to a risk of
exposure to a combustible gas.
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