Carrier CDII-184R1-0CTR4 Installation & Operation Manual page 7

Third-party individuals may enter the work site and receive electric shocks if this warning is not
to the
heeded. Children shall be supervised to ensure that they do not play with appliance.
equipment
Connect the cut-off lead wires with crimp contact, etc., put the closed end side upward and then
apply a water-cut method, otherwise a leak or production of fire is caused at the users' side.
Insulating
measures
When performing repairs using a gas burner, replace the refrigerant with nitrogen gas because
the oil that coats the pipes may otherwise burn.
When repairing the refrigerating cycle, take the following measures.
1. Be attentive to fire around the cycle. When using a gas stove, etc., be sure to put out fire
before work; otherwise the oil mixed with refrigerant gas may catch fire.
2. Do not use a welder in the closed room. When using it without ventilation, carbon
No fire
monoxide poisoning may be caused.
3. Do not bring inflammables close to the refrigerant cycle, otherwise fire of the welder may
catch the inflammables.
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 miss-charging, the size of the service valve and
flair nut is changed from R22 to R410A.
For an air conditioner which uses R410A, never use other refrigerant than R410A. For an air
conditioner which uses another 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.
When the air conditioner has been installed or relocated, follow the instructions in the Installation
Manual and purge the air completely so that no gases other than the refrigerant will be mixed
in the refrigerating cycle. Failure to purge the air completely may cause the air conditioner to
malfunction.
In case of additional refrigerant charge, follow additional refrigerant charge instructions. 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
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. 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 cooking
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.
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.
If incorrect assembly or incorrect wire connection was done, a disaster such as a leak or fire is
Assembly/
caused at user's side.
Wiring
After the work has finished, be sure to use an insulation tester set (500 V Megger) to check the
resistance is 1 MO or more between the charge section and the non-charge metal section
(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
When the refrigerant gas leaks during work, execute ventilation.
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