Buick LeSabre 1965 Service Manual page 840

ACCESSORIES
OPTIONAL HEATER-AIR CONDITIONER SYSTEM 1 1 - 1 0 7
Test Conditions - 1*9000 Series
1. Car windows and hood open, doors closed.
2. Air Conditioner Temp, and Air levers set at maximum cooling position*
3. All Air Conditioner outlets open.
4. Gage set connected to Schrader valve fittings as shown in Figure 11-153.
5. Heater defroster and ventilator controls in OFF position.
6. Test should be conducted in area with above 70°F. ambient temperature.
7. Ambient air temperature should be measured in immediate test area toward
front of car.
8. A fan should be used in front of radiator grille to insure minimum differ-
ential between temperature of air passing over condenser through radiator
grille and evaporator through body cowl screen.
Test No. 1; -1*9000 Series
Set engine speed at 2000 rpm.
The following table lists ambient temperature, evaporator and head pressures and
right air outlet temperatures that can be expected from a normally-functioning unit.
NOTE: If evaporator pressure is not correct for indicated ambient temperature, ad-
just suction throttle valve following procedure in par. 11-1$, sub-par, f.
NOTE: The lower outlet temperature can be achieved on dry days, and the higher on
humid days.
Compressor
Ambient Evaporator Pressure Head Pressure Rt. Outlet
Temperature °F PSIG PSIG Temperature °F
70
80
90
100
110
20-22
20-22
20-22
20-22
22-25
160-190
190-210
220-240
250-270
280-300
37-41
39-43
43-46
47-50
51-54
Test No. 2: -1*9000 Series
This should be run on cars which will pass Test No. 1, but do not perform satis-
factorily on the road. In this test the engine speed should be adjusted to the ambient
temperature and humidity.
Compressor
Ambient Engine Evaporator Head Pressure Right
Temperature °F Humidity R.P.M. Pressure PSIG PSIG Outlet °F
70
70
80
80
90
90
100
100
110
110
Dry
Humid
Dry
Humid
Dry
Humid
Dry
Humid
Dry
Humid
500-525
500-525
525-550
675-700
725-750
975-1000
1000-1025
1100-1125
1200-1225
1675-1700
26
26
26
26
26
26
26
26
26
26
122
138
155
190
200
220
230
245
260
285
36
38
41
45
44
48
46
49
49
54
Figure 11 —155—Air Conditioner Functional Test - 49000 Series