Safety Precautions; Before Installation And Electric Work - Mitsubishi Electric PQRY-P200YEM-A Service Handbook

Safety precautions

Before installation and electric work

Before installing the unit, make sure you read all
the "Safety precautions".
The "Safety precautions" provide very important
points regarding safety. Make sure you follow
them.
This equipment may not be applicable to
EN61000-3-2: 1995 and EN61000-3-3: 1995.
This equipment may have an adverse effect on
equipment on the same electrical supply system.
Please report to or take consent by the supply
authority before connection to the system.
Symbols used in the text
Warning:
Describes precautions that should be observed to
prevent danger of injury or death to the user.
Caution:
Describes precautions that should be observed to
prevent damage to the unit.
Symbols used in the illustrations
: Indicates an action that must be avoided.
: Indicates that important instructions must be followed.
: Indicates a part which must be grounded.
: Indicates that caution should be taken with rotating parts.
(This symbol is displayed on the main unit label.)
<Color: Yellow>
: Indicates that the main switch must be turned off before
servicing. (This symbol is displayed on the main unit label.)
<Color: Blue>
: Beware of electric shock (This symbol is displayed on the
main unit label.) <Color: Yellow>
: Beware of hot surface (This symbol is displayed on the
main unit label.) <Color: Yellow>
: Please pay attention to electric shock fully because
ELV
this is not Safety Extra Low-Voltage (SELV) circuit.
And at servicing, please shut down the power supply
for both of Indoor Unit and Heat Source Unit.
Warning:
Carefully read the labels affixed to the main unit.
Warning:
• Ask the dealer or an authorized technician to install the air
conditioner.
- Improper installation by the user may result in water leakage,
electric shock, or fire.
• Install the air unit at a place that can withstand its weight.
- Inadequate strength may cause the unit to fall down, resulting
in injuries.
• Use the specified cables for wiring. Make the connections
securely so that the outside force of the cable is not
applied to the terminals.
- Inadequate connection and fastening may generate heat and
cause a fire.
• Prepare for typhoons and other strong winds and earth-
quakes and install the unit at the specified place.
- Improper installation may cause the unit to topple and result
in injury.
• Always use an air cleaner, humidifier, electric heater, and
other accessories specified by Mitsubishi Electric.
- Ask an authorized technician to install the accessories.
Improper installation by the user may result in water leakage,
electric shock, or fire.
• Never repair the unit. If the air conditioner must be
repaired, consult the dealer.
- If the unit is repaired improperly, water leakage, electric
shock, or fire may result.
• Do not touch the heat exchanger fins.
- Improper handling may result in injury.
• If refrigerant gas leaks during installation work, ventilate
the room.
- If the refrigerant gas comes into contact with a flame,
poisonous gases will be released.
• Install the air conditioner according to this Installation
Manual.
- If the unit is installed improperly, water leakage, electric
shock, or fire may result.
• Have all electric work done by a licensed electrician
according to "Electric Facility Engineering Standard" and
"Interior Wire Regulations"and the instructions given in
this manual and always use a special circuit.
- If the power source capacity is inadequate or electric work is
performed improperly, electric shock and fire may result.
• Securely install the cover of control box and the panel.
- If the cover and panel are not installed properly, dust or water
may enter the heat source unit and fire or electric shock may
result.
• When installing and moving the air conditioner to another
site, do not charge the it with a refrigerant different from
the refrigerant (R407C) specified on the unit.
- If a different refrigerant or air is mixed with the original
refrigerant, the refrigerant cycle may malfunction and the unit
may be damaged.
• If the air conditioner is installed in a small room, measures
must be taken to prevent the refrigerant concentration
from exceeding the safety limit even if the refrigerant
should leak.
- Consult the dealer regarding the appropriate measures to
prevent the safety limit from being exceeded. Should the
refrigerant leak and cause the safety limit to be exceeded,
hazards due to lack of oxygen in the room could result.
• When moving and reinstalling the air conditioner, consult
the dealer or an authorized technician.
- If the air conditioner is installed improperly, water leakage,
electric shock, or fire may result.
• After completing installation work, make sure that refriger-
ant gas is not leaking.
- If the refrigerant gas leaks and is exposed to a fan heater,
stove, oven, or other heat source, it may generate noxious
gases.
• Do not reconstruct or change the settings of the protec-
tion devices.
- If the pressure switch, thermal switch, or other protection
device is shorted and operated forcibly, or parts other than
those specified by Mitsubishi Electric are used, fire or
explosion may result.
• To dispose of this product, consult your dealer.
• The installer and system specialist shall secure safety
against leakage according to local regulation or standards.
- Following standards may be applicable if local regulation are
not available.
• Pay a special attention to the place, such as a basement,
etc. where refrigeration gas can stay, since refrigerant is
heavier than the air.
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