Performance Test; How To Read The Standard Performance Curve - Suzuki Baleno Manual

1B-34 AIR CONDITIONING (OPTIONAL)
1. Thermometer
2. Psychrometer

PERFORMANCE TEST

After finishing all repairs, make sure to carry out performance test
of air conditioning system as follows.
PROCEDURE
1) Connect high and low side charging hose of manifold gauge set
to hose fittings of compressor.
2) Run engine, and keep compressor speed at 2,000 rpm.
3) Operate air conditioning, and set blower switch at "HI", temper-
ature lever at "COOL".
4) Keep all windows and doors open.
5) Insert a dry bulb thermometer in cool air outlet, and place
psychrometer (dry and wet bulb thermometer) close to inlet of
cooling unit.
6) The high pressure gauge reading should be within specified
pressure range.
High pressure
gauge reading: 1470 – 1760 kPa
(15.0 – 18.0 kg/cm
NOTE:
If the gauge indicates too high, pour water on condenser or
if it is too low, cover front surface of condenser.
7) The dry bulb thermometer at air inlet should be within 25 to 355C
(77 to 955F).
Under above conditions, operate air conditioning system until a
stabilized condition on high and low pressure gauges and ther-
mometers has been established.
HOW TO READ THE STANDARD PERFORMANCE
CURVE
1) Read psychrometer reading at the inlet, and get relative humid-
ity from psychrometric chart. (See figures on next page.)
2) Measure dry bulb temperature at cool air outlet, then find out the
difference between inlet and outlet temperatures.
3) Check the relative humidity-to-temperature difference relation-
ship using the graph.
As an example of 175C (62.65F) temperature difference and
60% relative humidity shown in it, if their crossing point falls
within the area between two lines, cooling performance then is
satisfactory and proper.
2
, 214 – 256 psi)