U-4LE1E5, U-4LE1E8, U-5LE1E5, U-5LE1E8, U-6LE1E5, U-6LE1E8 (serv.man2) - Panasonic Air Conditioner Service Manual (repair manual). Page 3

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2011/08/25   11:41:37

• Ventilate the room well, in the event that is refrigerant 

gas leaks during the installation. Be careful not to allow 
contact of the refrigerant gas with a flame as this will 
cause the generation of poisonous gas.

• Keep all tubing runs as short as possible.

• Use the flare method for connecting tubing.

• Apply refrigerant lubricant to the matching surfaces 

of the flare and union tubes before connecting them, 
then tighten the nut with a torque wrench for a leak-free 
connection.

• Check carefully for leaks before starting the test run.

• Do not leak refrigerant while piping work for an

installation or re-installation, and while repairing
refrigeration parts.
Handle liquid refrigerant carefully as it may cause
frostbite.

• When performing piping work do 

not mix air except for specified 
refrigerant (R410A) in refrigeration 
cycle. It causes capacity down, and 
risk of explosion and injury due to 
high tension inside the refrigerant 
cycle.

• Refrigerant gas leakage may cause 

fire.
Do not add or replace refrigerant
other than specified type.
It may cause product damage, burst
and injury etc.

•

• Turn the power OFF at the main power box 

(mains) before opening the unit to check or repair 
electrical parts and wiring.

•

Keep your fingers and clothing away from any moving 
parts.

•

Clean up the site after you finish, remembering to 
check that no metal scraps or bits of wiring have been 
left inside the unit being serviced.

•

•

Do not clean inside the indoor and 
outdoor units by users. Engage 
authorized dealer or specialist for 
cleaning.
In case of malfunction of this 
appliance, do not repair by yourself. 
Contact to the sales dealer or service 
dealer for a repair.

• Do not touch the air inlet or the 

sharp aluminum fins of the 
outdoor unit. You may get injured.

•  Ventilate any enclosed areas when 

installing or testing the refrigeration 
system. Escaped refrigerant gas, on 
contact with fire or heat, can produce 
dangerously toxic gas.

•  Confirm after installation that no 

refrigerant gas is leaking. If the gas 
comes in contact with a burning stove, 
gas water heater, electric room heater 
or other heat source, it can cause the 
generation of poisonous gas.

•

•

•

Do not touch the air inlet or the 
sharp aluminum fins of the 
outdoor unit. You may get injured.

Do not sit or step on the unit, 
you may fall down accidentally.

Do not stick any object into the 
FAN CASE. 
You may be injured and the 
unit may be damaged.

Select an installation location which is rigid and strong 
enough to support or hold the unit, and select a location 
for easy maintenance.
…In a Room
Properly insulate any tubing run inside a room to prevent 
“sweating” that can cause dripping and water damage to 
walls and floors.

Keep the fire alarm and the air outlet at least 
1.5 m away from the unit.

…In Moist or Uneven Locations
Use a raised concrete pad or concrete blocks to provide 
a solid, level foundation for the outdoor unit. This prevents 
water damage and abnormal vibration.
…In an Area with High Winds
Securely anchor the outdoor unit down with bolts and a 
metal frame. Provide a suitable air baffle.
…In a Snowy Area (for Heat Pump-type Systems)
Install the outdoor unit on a raised platform that is higher 
than drifting snow. Provide snow vents.

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2014/08/26   17:37:46

2014/08/26   17:37:46