Toshiba RAV-SM407MUT-E Installation Manual page 7

CAUTION
R410A refrigerant air conditioner installation
• This air conditioner adopts the 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 R410A
refrigerant, refrigerating oil has also been changed. Therefore, do not
let water, dust, former refrigerant, or refrigerating oil enter the
refrigerating cycle during installation work.
• 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 R410A refrigerant.
• For connecting pipes, use new and clean piping designed for R410A,
and please care so that water or dust does not enter.
(*1) Refer to the "Definition of qualified installer or qualified service person".
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