Suzuki WagonR+ RB310 Service Manual page 2087

1B-8 AIR CONDITIONING (OPTIONAL)
Ambient Temperature
Temp. at Evaporator Air Inlet
9) Check for each pressure of low side and high side if it is within
shaded range of left graph.
NOTE:
Pressure registered on gauge varies with ambient temper-
ature. Therefore, use left graphs when determining if pres-
sures are normal or not.
Example:
Gauges should read as follows when ambient
temperature is 30_C
Pressure on high pressure
gauge (HI):
Pressure on low pressure
gauge (LO):
If each gauge reading is out of specified pressure, correct de-
fective part referring to following Test Diagnosis table.
_F
10) Check inlet port temperature-to-outlet port temperature rela-
tionship using graph at the left.
For example, if evaporator inlet port temperature is 25_C
(77_F) and center duct air outlet temperature is 8_C (46.4_F),
their crossing point is within acceptable range as shown in
graph at the left.
In this case, cooling performance is satisfactory and proper.
11) If crossing point is out of acceptable range, diagnose trouble
referring to following Test Diagnosis table.
1400 – 1750 kPa
2
14.0 – 17.5 kg/cm
230 – 350 kPa
2
2.3 – 3.5 kg/cm