CS-TE9HKE, CS-TE12HKE, CU-TE9HKE, CU-TE12HKE - Panasonic Air Conditioner Service Manual (repair manual). Page 3

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11. This equipment must be properly earthed. Earth line must not be connected to gas pipe, water pipe, earth of lightning rod and

telephone. Otherwise, it may cause electric shock in case equipment breakdown or insulation breakdown. 

12. When connecting the piping, do not allow air or any substances other than the specified refrigerant to enter the refrigeration cycle. 

Otherwise, this may lower the capacity, cause abnormally high pressure in the refrigeration cycle, and possibly result in explosion and 
injury. 

13. Do not damage or use unspecified power supply cord. Otherwise it will cause fire or electric shock.

14. Do not modify the length of the power supply cord or use extension cord, and do not share the single outlet with other electric 

appliances. Otherwise, it will cause fire or electric shock. 

15. It is desirable that the amount of residual oil is less than 40 mg/10m. 

Thickness of copper pipes used with R410A must be more than 0.6 mm. Never use copper pipes thinner than 0.6 mm.

16. During installation, before run the compressor, confirm the refrigerant pipes are fixed. Operation of compressor without fixing the piping, 

setting the valves at open condition, a burst may occur and cause injury.

17. After completion of installation or service, confirm there is no leakage or refrigerant gas. It may generate toxic gas when the refrigerant 

contacts with fire.

18. Ventilate if there is refrigerant gas leakage during operation. It may cause toxic gas when refrigerant contacts with fire. 

1.

Do not install the unit at place where leakage of flammable gas may occur. In case gas leaks and accumulates at surrounding of the 
unit, it may cause fire. 

2.

Carry out drainage piping as mentioned in installation instructions. If drainage is not perfect, water may enter the room and damage the 
furniture. 

3.

Tighten the flare nut with torque wrench according to specified method. If the flare nut is over-tightened, after a long period, the flare may 
break and cause refrigerant gas leakage. 

4.

Do not touch outdoor unit air inlet and aluminium fin. It may cause injury. 

5.

Select an installation location which is easy for maintenance. 

6.

Pb free solder has a higher melting point than standard solder; typically the melting point is 50

qF – 70qF (30qC – 40qC) higher. Please use       

a high temperature solder iron. In case of the soldering iron with temperature control, please set it to 700 ± 20

qF (370 ± 10qC).

Pb free solder will tend to splash when heated too high (about 1100

qF / 600qC).

7.

Power supply connection to the air conditioner. Connect the power supply cord of the air conditioner to the mains using one of the following 
methods.
Power supply point shall be the place where there is ease for access for the power disconnection in case of emergency. In some countries, 
permanent connection of this room air conditioner to the power supply is prohibited. 
i. Power supply connection to the receptacle using a power plug. Use an approved power plug with earth pin for the connection to the socket.
ii. Power supply connection to a circuit breaker for the permanent connection. Use an approved circuit breaker for the permanent connection. 

It must be a double pole switch with a minimum 3.5 mm contact gap. 

8.

Do not release refrigerant during piping work for installation, servicing, reinstallation and during repairing a refrigerant parts. Take care 
of the liquid refrigerant, it may cause frostbite. 

9.

Installation work: It may need two people to carry out the installation work. 

10. Do not install this appliance in a laundry room or other location where water may drip from the ceiling, etc.