AR83.50-A-5130B | Check the air conditioning's high-pressure switch (roof equipment) | 15.11.11 |
MODEL 690.340 /341
with CODE (H06) Air conditioning
with CODE (HH6) Air conditioning, roof equipment
MODEL 690.630 /631 /640 /641 with CODE (HH6) Air conditioning, roof equipment
MODEL 903.661 /662 /663 /671 /672 /673, 904.663 /662 with CODE (HH6) Air conditioning, roof equipment
MODEL 904.663 with CODE (HK1) Regulated air conditioning, roof equipment
A83.30-0030-12
1 Electrical connector
2 Condenser fan
Attaching | |||
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. | ||
Danger! | Risk of explosion caused by welding or soldering work on closed air conditioning system. Risk of poisoning caused by inhaling overheated refrigerant vapors. Risk of injury to skin and eyes caused by contact with liquid refrigerant. | Never perform welding work on or near a closed air conditioning system. No smoking or open flames. Wear safety glasses and protective gloves. Work only in well ventilated areas. Carry out repair work on the air conditioning system circuit only after the system has been drained. | |
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. | |
1 | Open front flap | ||
2 | Unscrew protective caps from test and filling connections at thrust side and intake side and connect air conditioning service unit | Operate air conditioning service unit as described in the manufacturer's operator's manual. | |
Air conditioner service unit R134a gotis://E_83_05.0 | |||
| Removing | ||
3 | Remove condenser unit paneling on roof | ||
4 | Disconnect electrical connector (1) from condenser fan (2) | ||
| Checking | ||
5 | Start engine and allow to idle | ||
6 | Switch on air conditioning | ||
7 | Read off pressure from air conditioning service unit when refrigerant compressor is being switched on and off | If pressure when switching on and off does not correspond with the specified values, replace high-pressure switch: | |
Remove/install high-pressure switch of air conditioning system | |||
8 | Turn off engine | ||
| Install | ||
9 | Connect electrical connector (1) to condenser fan (2) | ||
10 | Install condenser unit paneling on roof | ||
11 | Disconnect air conditioning service unit and screw protective caps to test and filling connections at thrust side and intake side | ||
12 | Close front flap |
Test values for air conditioning pressure switch
Number | Designation | Model | Model | |||
BE83.30-N-1001-03A | High/low-pressure switch | Low pressure | Switching off | bar | - | - |
Switching on | bar | - | - | |||
High pressure | Switching off | bar | 25.5 (0.5) | 25.5 (0.5) | ||
Switching on | bar | 18 (0.5) | 18 (0.5) | |||
Test values for air conditioning pressure switch
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