Tender For engg defects rectification - various engineering defects, e-867:03 in nos. fan fire flap stuck in position. same to be made free to rotate for operation from remote and manual. in way job includes removal and fitment of motor fan housing., e-868:performance of ref plant observed sub optimal. di/dr to be carried out and plant to be proved for satisfactory operation. in way job includes pressure testing by nitrogen gas and refrigerant to be charge post vaccum process., e-869:abnormal noise observed from port fin stabilizer hydraulic pump. di/dr to be carried out and fin stabilizer to be proved for satisfactory operation. in way job includes removal and re-fitment of pump in position., e-870:pin hole observed from chilled water expansion tank of ac plant frequently due to aging. same to be fabricated as per sample (mat-ss)..