Tender For providing of customized amc/cmc for pre-owned products - the contractor shall provide normal preventive maintenance services viz., general check-up, adjustments, cleaning of internal components, functional testing, pressure testing, valve maintenance, gasket replacement and shall ensure the smooth functioning of the desorption canisters. the contractor, for this, shall depute its service engineer two times per year during the period of this agreement once in every six months and any number of breakdown visits to set the machine in order as and when required at free of cost within 72 hrs. of receipt of complaint at central mine planning & design institute ltd., gondwana place, kanke road, ranchi- 834031. such preventive maintenance shall be carried out in predetermined schedule in consultation with cmpdi