| The refrigerant used by this air conditioner is the R410A. |
| Check the used refrigerant name and use tools and materials of the parts which match with it. |
| For the products which use R410A refrigerant, the refrigerant name is indicated at a position on |
| the outdoor unit where is easy to see. |
| To prevent |
| Do not use any refrigerant different from the one specified for complement or replacement. |
| Otherwise, abnormally high pressure may be generated in the refrigeration cycle, which may |
| result in a failure or explosion of the product or an injury to your body. |
| For an air conditioner which uses R410A, never use other refrigerant than R410A. |
| For an air conditioner which uses other refrigerant (R22, etc.), never use R410A. |
| If different types of refrigerant are mixed, abnormal high pressure generates in the refrigerating |
| cycle and an injury due to breakage may be caused. |
| Do not charge refrigerant additionally. |
| If charging refrigerant additionally when refrigerant gas leaks, the refrigerant composition in the |
| refrigerating cycle changes resulted in change of air conditioner characteristics or refrigerant over |
| the specified standard amount is charged and an abnormal high pressure is applied to the inside |
| of the refrigerating cycle resulted in cause of breakage or injury. |
Refrigerant | Therefore if the refrigerant gas leaks, recover the refrigerant in the air conditioner, execute |
| vacuuming, and then newly recharge the specified amount of liquid refrigerant. |
| In this time, never charge the refrigerant over the specified amount. |
| When recharging the refrigerant in the refrigerating cycle, do not mix the refrigerant or air other |
| than R410A into the specified refrigerant. |
| If air or others is mixed with the refrigerant, abnormal high pressure generates in the refrigerating |
| cycle resulted in cause of injury due to breakage. |
| After installation work, check the refrigerant gas does not leak. |
| If the refrigerant gas leaks in the room, poisonous gas generates when gas touches to fire such |
| as fan heater, stove or cocking stove though the refrigerant gas itself is innocuous. |
| Never recover the refrigerant into the outdoor unit. |
| When the equipment is moved or repaired, be sure to recover the refrigerant with recovering device. |
| The refrigerant cannot be recovered in the outdoor unit; otherwise a serious accident such as |
| breakage or injury is caused. |
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| After repair work, surely assemble the disassembled parts, and connect and lead the removed |
| wires as before. |
| Perform the work so that the cabinet or panel does not catch the inner wires. |
Assembly/ | If incorrect assembly or incorrect wire connection was done, a disaster such as a leak or fire is |
Cabling | caused at user’s side. |
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| After the work has finished, be sure to use an insulation tester set (500V Megger) to check the |
| resistance is 1MΩ or more between the charge section and the |
| (Earth position). |
Insulator | If the resistance value is low, a disaster such as a leak or electric shock is caused at user’s side. |
check |
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| When the refrigerant gas leaks during work, execute ventilation. |
| If the refrigerant gas touches to a fire, poisonous gas generates. |
| A case of leakage of the refrigerant and the closed room full with gas is dangerous because a |
Ventilation | shortage of oxygen occurs. Be sure to execute ventilation. |
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| When the refrigerant gas leaks, find up the leaked position and repair it surely. |
| If the leaked position cannot be found up and the repair work is interrupted, |
| tighten the service valve, otherwise the refrigerant gas may leak into the room. |
| The poisonous gas generates when gas touches to fire such as fan heater, stove or cocking stove |
| though the refrigerant gas itself is innocuous. |
| When installing equipment which includes a large amount of charged refrigerant such as a multi |
| air conditioner in a |
| refrigerant leaks. |
| If the refrigerant leaks and exceeds the limit density, an accident of shortage of oxygen is caused. |
Tighten the flare nut with a torque wrench in the specified manner.
Compulsion | Excessive tighten of the flare nut may cause a crack in the flare nut after a long period, which may |
result in refrigerant leakage. |
Nitrogen gas must be used for the airtight test.
The charge hose must be connected in such a way that it is not slack.
For the installation/moving/reinstallation work, follow to the Installation Manual.
If an incorrect installation is done, a trouble of the refrigerating cycle, water leak, electric shock or fire is caused.
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