bids are invited for annual comprehensive maintenance contract of floor mounted upflow air cooled precession air-conditioning system at eldis radar with variable capacity scroll compressor, evaporator fan having electrically controlled commutator motor, dx cooling coil, micro processor controller, expansion valves, drivers, filters including attending breakdown calls within time as mentioned in scc and supply of all accessories, as per manufacturer recommendation which is including of replacement of outdoor & indoor motor , expansion valve , drier , contractor , relay etc. and repair or rectification of system leakage with refrigerant , other minor fault etc. as directed by engineer - in -charge. (model no : pex 3100ec , make : emerson, upflow+fixed scroll comp with icom, refrigerant gas - r407c). , supply & installation of pcb/mother board for emerson make floor mounted upflow air cooled precession air-conditioning system ( pac model no : pex 3100ec ). , supply & installation testing commissioning (sitc) of zr190kce - tfd - 523 copland scroll compressor ( make : copland scroll, volt : 380 - 420, ph : 3, hz : 60/50, lra i - block 179.0 ) for emerson make precession type air conditioner, model - pex 3100ec upflow+fixed scroll comp with icom, compressor capacity:-14.3tr ,refrigerant gas - r407c. , replacement of air filter ( gi frame, 2 layer hdpe, 1 layer nwpp, bonding adhesive, 5 micron ) for pac by size 820 mm x 660 mm x 100 mm. , replacement of damage air filter with 5 micron capacity new air filter made of gi frame, 2 layer hdpe, 1 layer nwpp, bonding adhesive, having size 395 mm x 845 mm x 100 mm suitable for precision ac as mentioned in item no-1.