Suzuki Baleno Manual page 80

MPa
2
MANIFOLD GAUGE kg/cm
psi
Lo Hi
0.15 – 0.25 1.37 – 1.57
1.5 – 2.5 14 – 16
21.3 – 35.5 200 – 227
0.5 – 0.6
Negative
5 – 6
pressure
71.2 – 85.3
Normal: Normal
0.15 – 0.25 1.37 – 1.57
1.5 – 2.5 14 – 16
21.4 – 35.5 200 – 227
Abnormal: Abnormal:
Negative 0.69 – 0.98
pressure 7 – 10
100 – 142
0.05 – 0.1
0.5 – 1.0
4.2 – 14.2 0.69 – 0.97
7 – 10
100 – 142
0.4 – 0.6
4 – 6
56.9 – 85.3
0.25 – 0.3
2.5 – 3.0
35.6 – 42.6
19.6 – 2.45
20 – 25
285 – 355
0.3 – 0.4
3.0 – 4.0
42.7 – 56.8
CONDITION
Normal condition.
D The low pressure side reads
a negative pressure, and the
high pressure side reads an
extremely low pressure.
D Presence of frost around tub-
ing to and from receiver/dryer
and expansion valve.
D During A/C operation, the low
pressure side sometimes in-
dicates negative pressure,
and sometimes normal pres-
sure.
D Both low and high pressure
sides indicate low readings.
D Continuous air bubbles are
visible through sight glass.
D Output air is slightly cold.
D Pressure on low pressure
side is high.
D Pressure on high pressure
side is low.
D Low pressure reading on both
low and high pressure sides.
D Air bubbles are not visible
even when engine rpm is low-
ered.
D Low pressure reading on both
low and high pressure sides.
D Low pressure side tubing is
not cold to touch.
D Air bubbles are visible
through sight glass.
D High pressure reading on
both low and high pressure
sides.
D Large amount of frost or dew
on the low pressure side tub-
ing.
AIR CONDITIONING (OPTIONAL) 1B-15
CAUSE
––––––––––
D Dust particles or water
droplets are either stuck
or frozen inside expan-
sion valve, preventing the
refrigerant from flowing.
D Gas leak from heat-sensi-
tizing tube is preventing
refrigerant flow.
D Expansion valve is frozen
due to moisture around in
the system, and tempo-
rarily shuts off the refrig-
eration cycle.
D Insufficient refrigerant in
system.
(Refrigerant leaking.)
D Internal leak in compres-
sor.
D Overcharged A/C system.
D Faulty condenser cooling
operation.
D Faulty condenser fan op-
eration.
D Presence of air in A/C
system.
(Improperly evacuated.)
D Faulty expansion valve or
improper attachment of
heat-sensitizing tube.
D Refrigerant flow is not
regulated properly.
CORRECTION
––––––––––
D Clean expansion valve. Re-
place it if it cannot be cleaned.
D Replace receiver/dryer.
Evacuate the A/C system and
recharge with fresh refrigerant.
D If heat-sensitizing tube is de-
fective, replace expansion
valve.
D Replace expansion valve.
D Replace receiver/dryer.
D Evacuate A/C system and re-
charge with fresh refrigerant.
D Using a gas leak detector,
check for leaks and repair as
necessary.
D Recharge refrigerant to a spe-
cified amount.
If the pressure reading is al-
most 0 when the manifold
gauges are attached, check
for any leaks, repair them, and
evacuate the system.
D Inspect compressor and repair
or replace as necessary.
D Adjust refrigerant to specified
amount.
D Clean condenser.
D Inspect and repair condenser
fan.
D Replace receiver/dryer.
D Inspect quantity of compres-
sor oil and presence of con-
taminants in oil.
D Evacuate system and re-
charge with fresh refrigerant.
D Inspect if heat-sensitizing tube
is properly attached.
D Replace expansion valve.