Toshiba Carrier MMD-AP0726HP-UL Manuel D'installation page 4

• Conform to the regulations of the local electric company
when wiring the power supply.
• For the refrigerant recovery work (collection of refrigerant
from the pipe to the compressor), stop the compressor
before disconnecting the refrigerant pipe.
If the refrigerant pipe is disconnected while the compressor is
working with the valve open, the compressor sucks air and the
refrigeration cycle is overpressurized, which may cause a burst
or injury.
• Before carrying out the installation, maintenance, repair or
removal work, set the circuit breaker to the OFF position.
Otherwise, electric shocks may result.
• Do not touch the aluminium n of the unit. You may injure
yourself if you do so. If the n must be touched for some
reason, rst put on protective gloves and safety work
clothing, and then proceed.
• Install the air conditioner securely in a location where the
base can sustain the weight adequately. If the strength is
not enough, the unit may fall down resulting in injury.
• The unit can be accessed from the service panel.
• Install a circuit breaker that meets the speci cations in
the installation manual and the stipulations in the local
regulations and laws.
• Install the circuit breaker where it can be easily accessed by
the agent.
• Under no circumstances the power wire must not be
extended. Connection trouble in the places where the wire is
extended may give rise to smoking and/or a re.
• Upon completion of the installation work, tell the user where
the circuit breaker is located. If the user does not know
where the circuit breaker is, he or she will not be able to
turn it off in the event that trouble has occurred in the air
conditioner.
5-EN
01_1117882101-EN.indd 3 01_1117882101-EN.indd 3
– 3 –
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 changed from those for the
conventional refrigerant.
• Accordingly the exclusive tools are required for the new
refrigerant (R410A).
• For connecting pipes, use new and clean piping designed for
R410A, and please care so that water or dust does not enter.
• Tighten the are nut with a torque wrench in the speci ed
manner.
Excessive tightening of the are nut may cause a crack in the
are nut after a long period, which may result in refrigerant
leakage.
• Wear heavy gloves during the installation work to avoid
injury.
6-EN
6/16/2559 BE 8:51 AM 6/16/2559 BE 8:51 AM