Safety Cautions
Caution!
Store the piping to be used during installation indoors, and keep both ends of the piping sealed until immediately before brazing.(keep elbows and other joints wrapped in plastic.)
If dust, dirt, or water enters the refrigerant cycle, it may cause the oil in the unit to deteriorate or may cause the compressor to malfunction.
Use a small amount of ester oil,ether oil, or alkylbenzene to coat flares and flange connections.
A large amount of mineral oil will cause the refrigerating machine oil to deteriorate.
Do not use a charging cylinder.
The use of charging cylinder will change the composition of the refrigerant and lead to power loss.
Exercise special care when handling the tools.
An introduction of foreign objects such as dust, dirt, or water into the refrigerant cycle will cause the refrigerating machine oil to deteriorate.
Only use R410A refrigerant.
The use of refrigerants containing chlorine(i.e. R22) will cause the refrigerant to deteriorate.
Use lipuid refrigerant to charge the system.
Charge the unit with gas refrigerant will cause the refrigerant in the cylinder to change its composition and will lead to a drop in performance
Before Installing the Unit
Warning!
Do not install the unit in a place where there is a possibility of flammable gas leak.
Leaked gas accumulated around the unit may start a fire.
Do not use the unit to preserve food, animals, plants,artifacts, or for other special purposes.
The unit is not designed to provide adepuate conditions to preserve the quality of these items.
Do not use the unit in an unusual environment
The use of the unit in the presence of a large amount of oil, steam,acid, alkaline solvents,or special types of sprays may lead to a remarkable drop in performance and/or malfunction and presents a risk of electric shock, smoke, or fire. 
The presence of organic solvents, corroded gas (such as ammonia,sulfur compounds,and acid may cause gas or water leak.)
When installing the unit in a hospital,take necessary measures against noise.
High-frequency
Do not place the unit on or over things that may not get wet.
When humidity level exceeds 80% or when the drainage system is clogged, indoor units may drip water.
Installation of a centralized drainage system for the outdoor unit may also need to be considered to prevent water drips from the outdoor units.
6
