Removing the condenser fan.
1 - condenser, 2 - radiator, 3 - radiator electric fan, 4 - condenser electric fan.
Capacitor check
1. Check the condenser tube fins for damage or blockage. If a blockage is found, flush these areas with water and blow with compressed air. If deformation is found (bend), carefully straighten the deformed fins with a screwdriver or pliers.
2. Check fittings and other condenser connections for leaks. Repair or replace parts as necessary.
Removal and installation of the electrofan of the condenser
Remove and install the compressor according to the assembly drawing "Removing the condenser fan".
Checking the condenser fan motor
1. Check the condition of the condenser fan motor connector terminals.
2. Connect battery power to the fan motor leads as shown in the figure and check that the fan rotates smoothly.
Checking the receiver dryer
1. Using a leak detector, check the tightness of the fusible plug and fittings of the receiver-dryer.
2. Start the engine and set the idle speed to high (warm-up speed). Turn on the air conditioner and check the temperature of the tubes at the inlet and outlet of the receiver. If there is a significant temperature difference, replace the receiver dryer.
Attention:
- Plug the disconnected fittings immediately to prevent moisture and contaminants from entering the system.
- Do not remove plugs from components until the components are ready to be connected.
- When replacing the dryer receiver, add 40 ml of compressor oil to the compressor.
- Evacuate the system and charge the system with refrigerant, then check the A/C system. The system overtemperature switch turns on the condenser and radiator fans at maximum speed.
Triple pressure switch test
The triple pressure switch is a combination of low, medium and high pressure switches.
- A) The low pressure switch turns off the air conditioning compressor when the pressure in the system drops below normal.
- b) The high pressure switch turns off the air conditioning compressor when the pressure in the system is exceeded.
- V) The average pressure switch is used to detect the overheating condition of the air conditioning system.
Table. Characteristics (set pressure) switch (kPa).
Pressure | OFF↔ON | ON↔OFF |
High | 3200±200 | 2600±200 |
Low | 230±25 | 200±20 |
Average | 1550±80 | 1150+120 |