AP83.00-A-8352A | Air conditioning system - function check | 10.11.11 |
MODEL 690.340 /341 /630 /631 /640 /641, 903.661 /662 /663 /671 /672 /673, 904.663 with CODE (HH6) Air conditioning, roof equipment
MODEL 904.662 /663 with CODE (HK1) Regulated air conditioning, roof equipment
| Removing | ||
Danger! | Risk of accident caused by vehicle starting off by itself when engine is running. Risk of injury caused by contusions and burns during starting procedure or when working near the engine as it is running | Secure vehicle to prevent it from moving by itself. | |
Danger! | Risk of death caused by falling from vehicle roof. Risk of injury to other persons caused by falling objects during work in roof area. | ||
1 | Remove paneling of condenser unit | ||
| |||
2 | Park vehicle in shade with windows open, and rotate heater temperature selection switch to "Cold" | ||
| Checking | ||
3 | Start engine and allow to idle | ||
4 | Switch on roof air conditioning and set roof air conditioning temperature control to maximum cooling output | When the roof air conditioning is switched on, a slight change in engine speed must be discernible. | |
5 | Set blower switch for roof air conditioning to position II | ||
6 | Check refrigerant level | ||
7 | Inspect the air conditioning circuit for leaks | Only if bubbles can be seen in inspection glass of roof air conditioning. | |
| |||
Air conditioner leak detector gotis://E_83_04.0 | |||
8 | Set blower switch for roof air conditioning to position I | ||
9 | Also check temperature at middle air outlet opening | After approx. 5 min. the temperature of the air flowing in has to be 7 to 10 °C below the temperature of the air suctioned in. | |
If the correct air outlet temperature is not reached: | |||
| Check high-pressure switch of roof air conditioning As a separate repair order. | ||
If high-pressure switch of roof air conditioning is OK: Check that temperature control and low-pressure switch are functioning correctly As a separate repair order. | |||
10 | Switch off roof air conditioning and switch off engine | ||
| Install | ||
11 | Install condenser unit paneling | ||
|
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