SOME CUSTOMERS MAY COMPLAIN THAT THE AIR FROM THE VENTS IS NOT COLD WHEN THE AIR CONDITIONER IS ON. THIS COULD BE CAUSED BY DUST GENERATED DURING POLISHING OF THE A/C PIPES AT PRODUCTION REMAINING IN THE PIPES DUE TO INSUFFI-CIENT WASHING. THE DUST THEN CIRCULATES IN THE A/C SYSTEM CAUSING THE CONDENSER TO CLOG AND THE A/C SYSTEM TO BECOME INOPERATIVE. TO CORRECT THE PROBLEM, THE POLISHING PROCESS OF THE A/C PIPES HAS BEEN IMPROVED TO MINI-MIZE THE GENERATION OF DUST.