Performance Test
| The performance test determines whether the temperature of the output air, the low pressure and high pressure at a certain ambient temperature and engine speed correspond to the specifications. |
The following conditions must be observed:
· Connect Service Station to high and low pressure service connections.
1 = High pressure service connection
2 = Low pressure service connection
(C 20 LET and C 25 XE on vehicle underbody, at front axle, right)
| Important: Hoses must not come into contact with the exhaust manifold. | |||
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| .P. E9685.tif | 9 | 7,5 | tiff;; |
· Close windows and doors, lower bonnet carefully.
· Start engine and switch on air conditioning.
·· Temperature switch "cold", air distribution switch "face level".
· Max. fan speed, recirculating air switch "off".
· Allow engine to run at idle speed for 15 minutes.
· After 15 minutes get in and set engine speed to 1500 rpm for 5 minutes.
· Measure ambient temperature and temperature at vent nozzles using
· Gauge MKM - 596 and compare with performance data.
| After performance test, allow vehicle to cool before disconnecting hoses. |