comprehensive maintenance of high precision a/c plants installed in cdr and nib at rttc chinchwad , pune , comprehensive maintenance of precision package air-conditioning units ( without operation ) as per details given in relevant sections by deploying the required specialized manpower as & when required by arranging required tools and plant etc . to carry out maintenance activities and attend all break down maintenance calls . contractors to take all steps to undertake preventive / special maintenance and testing to keep the system at optimum working condition a ) services included are: section- i , 15 tr precision package ac units . , 11 tr precision package ac units . , 5 tr precision package ac units .