Honda Accord 2008 Manual page 1877

07/11/02 09:39:19 61TA0000_210_0013
Heating/Air Conditioning
System Description
The air conditioning system removes heat from the passenger compartment by transferring heat from the ambient air
to the evaporator. The evaporator cools the air with the refrigerant that is circulating through the evaporator. The
refrigerant expands in the evaporator, and the evaporator becomes very cold and absorbs the heat from the ambient
air. The blower fan pushes air across the evaporator where the heat is absorbed, and then it blows the cool air into the
passenger compartment.
＊０１
A/C PRESSURE SWITCH
When the refrigerant is below
196 kPa (2.0 kgf/cm , 28 psi)
or above 3,138 kPa (32 kgf/cm ,
455 psi), the ECM/PCM turns the
compressor relay off to protect
the A/C compressor.
This vehicle uses HFC-134a (R-134a) refrigerant, which does not contain chlorofluorocarbons. Pay attention to the
following service items:
• Do not mix refrigerants CFC-12 (R-12) and HFC-134a (R-134a). They are not compatible.
• Use only the recommended polyalkyleneglycol (PAG) refrigerant oil (DENSO ND-OIL 8) designed for the R-134a A/C
compressor. Intermixing the recommended (PAG) refrigerant oil with any other refrigerant oil will result in A/C
compressor failure.
• All A/C system parts (A/C compressor, discharge line, suction line, evaporator, A/C condenser, receiver/dryer,
expansion valve, O-rings for joints) are designed for refrigerant R-134a. Do not exchange with R-12 parts.
• Use a halogen gas leak detector designed for refrigerant R-134a.
• R-12 and R-134a refrigerant servicing equipment are not interchangeable. Use only a recovery/recycling/charging
station that is U.L.-listed and is certified to meet the requirements of SAE J2210 to service the R-134a air
conditioning systems.
• Always recover refrigerant R-134a with an approved recovery/recycling/charging station before disconnecting any
A/C fitting.
21-12
ＴＡ０８ＡＨＡＧ２４１００００００００ＣＡＡＴ８０
EXPANSION VALVE
(Meters the required amount of
refrigerant into the evaporator)
2
2
A/C CONDENSER
(Radiation of heat)
BLOWER FAN
EVAPORATOR
(Absorption of heat)
EVAPORATOR TEMPERATURE SENSOR
RELIEF VALVE
(Relieves pressure at the A/C compressor
when the pressure is too high)
A/C COMPRESSOR
(Suction and compression)
RECEIVER/DRYER
DESICCANT
(Traps debris, and
removes moisture)
HIGH PRESSURE VAPOR
HIGH PRESSURE LIQUID
LOW PRESSURE LIQUID
LOW PRESSURE VAPOR