AIR CONDITIONING
AIR CONDITIONING SYSTEM - PERFORMANCE
TEST
4. Insert dry bulb thermometer into cold air outlet
and position dry and wet bulb thermometer close
to outside air inlet.
WARNING: R134a is hazardous, refer to
the GENERAL PRECAUTIONS given at the
beginning of this section.
Carry out this test with bonnet and doors or windows
open, air conditioning switched on, temperature
control set to cold and blower at maximum speed. Set
the air supply control to supply fresh air.
Do not spill water from the wet thermometer
(psychrometer).
5. Start engine and run it at 1500 rev/min for 10
minutes with air conditioning switched on.
6. Check that sight glass is free of bubbles.
7. Read both pressure gauges and thermometers.
Check readings against table below with
humidity between 60% and 80%. If readings are
incorrect. See Fault diagnosis, Refrigeration
System Faults.
1.
2.
3.
Close low pressure valve on refrigerant station.
Close high pressure valve on refrigerant station.
Connect a Refrigerant Station to the high and
low pressure servicing connections.
8. Switch off air conditioning, stop engine,
disconnect test equipment.
Performance range
Intake temperature
Outlet temperature
4 - 10°C
Low pressure
High pressure
20
25
30
- 24°C
- 29°C
- 35°C
18 - 28 lbf/in
- 1.9 bar
27 - 37 lbf/in
- 2.6 bar
33 - 47 lbf/in
- 3.2 bar
2
2
2
213 - 299 lbf/in
14.7 - 20.6 bar
256 - 341 lbf/in
17.6 - 23.5 bar
299 - 384 lbf/in
20.6 - 26.5 bar
2
1.2
9 - 19°C
2
2
1.9
20 - 27°C
2.3
Table 1
Ambient
Temperature
Compound Gauge
Readings
High Pressure
Gauge Readings
˚C
°F
bar
lbf/in
2
bar
lbf/in
2
16
26,7
38
60
80
100
110
1,03-1,4
1,4-1,72
1,72-2,1
2,1-2,4
15-20
20-25
25-30
30-35
6,9-10,3
9,6-13,1
12,4-15,5
14,8-17,2
100-150
140-190
180-225
215-250
43,5
ADJUSTMENT
5
| Categories | Range Rover |
|---|---|
| Tags | Land Rover |
| Model Year | 1998 |
| Download File |
|
| Document Type | Workshop Manual |
| Language | English |
| Product Brand | Land Rover |
| Document File Type | |
| Publisher | landrover.com |
| Wikipedia's Page | http://en.wikipedia.org/wiki/Land_Rover |
| Copyright | Attribution Non-commercial |
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