AIR CONDITIONING 38 11.15 DO’s AND DON’T’s SR. NO. DO’s REASON 1. Clean condenser During Regular Service of the Vehicle Dirty and Clogged Condenser Results in AC tripping and less cooling 2. Maintain proper Refrigerant level Less Refrigerant Results in less cooling. Excessive Refrigerant Results in AC tripping and less cooling 3. Add Recommended oil and Quantity in the compressor during refrigerant charging. Adequate Quantity of Compressor oil prevents poor pumping and premature wearing of internal components. 4. Clean evaporator periodically to remove dust and foreign particles. Clogged evaporator results in less air flow and reduced cooling. 5. Educate Customer on proper usage of AC controls (Refer owner’s manual) Proper usage of AC control will give optimum cooling 6. Adjust proper engine rpm. Less rpm will result in stalling of engine and less cooling. 7. Check coolant level and ensure proper engine tuning This will prevent overheating of engine. 8. Check proper belt tension. (For details refer Engine group). Loose belt will slip and over tight belt will result in noise and premature failure of magnetic clutch of the compressor. SR. NO. DON’TS REASON 1. Do not operate AC without refrigerant in the system of compressor. This will result in premature failure 2. Do not leak check the AC system with more than 20 kg / cm2 pressure. Higher pressure may result in damage To AC components. 3. Do not Leave AC joints open. Moisture tends to enter the AC system if the joints remain open for long time. 4. Do not charge refrigerant in the AC system without carrying out proper vacuum. Improper or No vacuuming of the AC system results in less cooling conditions.
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