Subaru Impreza 2.2L MT - Manual (Page 142)

IMPREZA U.S.A. (E)
4-10
because cooling performance is impaired by any accumulation of in-
sects and leaves on the condenser.
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Efficient cooling after parking in direct sunlight
After parking in direct sunlight, drive with the windows open for a few min-
utes to allow outside air to circulate into the heated interior. This results in
quicker cooling by the air conditioner. Keep the windows closed during
the operation of the air conditioner for maximum cooling efficiency.
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Lubrication oil circulation in the refrigerant circuit
Operate the air conditioner compressor at a low engine speed (at idle or
low driving speeds) a few minutes each month during the off-season to
circulate its oil.
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Checking air conditioning system before summer season
Check the air conditioner unit for refrigerant leaks, hose conditions, and
proper operation each spring. This check is best performed by your
SUBARU dealer.
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Cooling and dehumidifying in high humidity and low temperature
weather condition
Under certain weather conditions (high relative humidity, low tempera-
tures, etc.) a small amount of water vapor emission from the air outlets
may be noticed during cooling or dehumidifying. This condition is normal
and does not indicate any problem with the air conditioning system.
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Air conditioner compressor shut-off when engine is heavily
loaded
To improve acceleration and gas mileage, this air conditioner compres-
sor is designed to temporarily shut off during air conditioner operation
whenever the accelerator is fully depressed. Such as at rapid accelera-
tion or driving on a steep upgrade.
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Refrigerant for your climate control system
Your air conditioner uses ozone friendly refrigerant HFC134a. Therefore,
the method of adding, changing or checking the refrigerant is different