Honda ACCORD HYBRID 2005 Service Manual page 1588

Climate Control
S y s t e m D e s c r i p t i o n
The air conditioning system removes heat f r o m the passenger c o m p a r t m e n t by circulating refrigerant t h r o u g h the
system.
E X P A N S I O N V A L V E
(Meters the required amount of
refrigerant into the evaporator)
BLOWER FAN
E V A P O R A T O R
(Absorption of heat)
E V A P O R A T O R T E M P E R A T U R E S E N S O R
A / C P R E S S U R E S E N S O R
(Triple function)
W h e n the refrigerant is b e l o w
196 kPa (2.0 kgf/cm 2 , 28 psi)
or above 3,140 kPa (32 kgf/cm 2 ,
455 psi), the A/C pressure
switch opens the circuit to
the A/C switch and stops the
air c o n d i t i o n i n g to protect the
A/C compressor.
W h e n the refrigerant is above
1,470 kPa (15.0 kgf/cm
2
, 213 psi
the A/C pressure sensor
switches the radiator and
A/C condenser fans to high speed
RELIEF V A L V E
(Relieves pressure at the A / C compressor
when the pressure is too high)
A / C C O N D E N S E R
(Radiation of heat)
R E C E I V E R / D R Y E R
(Traps debris, and
removes moisture)
A / C C O M P R E S S O R
(Suction and compression)
HIGH P R E S S U R E VAPOR
HIGH P R E S S U R E LIQUID
L O W P R E S S U R E LIQUID
L O W P R E S S U R E VAPOR
This vehicle uses HFC-134a (R-134a) refrigerant, w h i c h does not contain chlorofluorocarbons. Pay attention to the
f o l l o w i n g service items:
• Do not m i x refrigerants CFC-12 (R-12) and HFC-134a (R-134a). They are not compatible.
• Use only the required Polyol Ester (POE) refrigerant oil (SANDEN SE-10Y) designed for the R-134a A/C compressor.
Intermixing the r e c o m m e n d e d (POE) refrigerant oil w i t h any other refrigerant oil w i l l result in A/C compressor
failure. Using the w r o n g refrigerant oil can also be a safety hazard (see page 21-6).
• 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 w i t h 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.
• A l w a y s recover refrigerant R-134a w i t h an approved recovery/recycling/charging station before disconnecting any
A/C fitting.
21-18