| 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 | |
| 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 2MΩ 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. | |
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| 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. | ||
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| Nitrogen gas must be used for the airtight test. | |
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| The charge hose must be connected in such a way that it is not slack. | |
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| 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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