COMPREHENSIVE AND PREVENTIVE MAINTENANCE OF CHILLER PLANT 3X120TR AND 3X 100TR AND REPAIR/ MAINT OF CONNECTED SYSTEM FOR HVAC AT AF STN TEZPUR UNDER GE (AF) TEZPUR

M&L for preventive and comprehensive maintenance of central AC chiller Plant of capacity 3x120 TR Water cooled scroll chiller type Model – PFS 1351 DBRY at Tech area through the OEM of Daikin (As per MOU) for following plants and equipments by Checking the functioning of Chiller unit/Air Handling unit/Pumps/Cooling tower/Controls and all such equipment covered installed, Descaling of condensers/chemical cleaning of evaporator coils/replacement of pre filters based as per requirement and Replenishing refrigerant gas R134a and compressor oil in the system as per requirement respectively, servicing/replacing and descaling of chiller plant any type of spare parts of chiller unit as and when required related to compressors, thermostat, cut outs, micro processor unit control modules of the plant, control boards, pressure transducer, sensors, capacity transducer, phase protector, timer, chillers/condensing unit water cooled screw chiller compressors, evaporators, expansion valves, water cooled condensers, oil cooler, oil pipings, oil filters, refrigerant pipings, refrigerant filters, solenoid and automatic control valves etc for under mentioned models of Make - Daikin, complete with the following all as specified and directed : - [a] Water cooled screw chiller type Model – PFS 1351 DBRY – 3 x 120 TR capacity including the operations specified. SM/MES No : 977/265/CH/19, 977/266/CH/19, 977/267/CH/19, Dt of Installation 31 Jan 2019. [b] Water cooled scroll chiller type Model – PFS 1351 DBRY – 3 x 120 TR capacity including the operations specified. SM/MES No : 977/262/CH/19, 977/263/CH/19, 977/264/CH/19, Dt of Installation 31 Jan 2019.

M&L for preventive and comprehensive maintenance of central AC chiller Plant of capacity 3x100 TR Water cooled screw chiller type Model – PFS 1101 DBRY at New Tech area through the OEM of Daikin (As per MOU) for following plants and equipments by Checking the functioning of Chiller unit/Air Handling unit/Pumps/Cooling tower/Controls and all such equipment covered installed, Descaling of condensers/chemical cleaning of evaporator coils/replacement of pre filters based as per requirement and Replenishing refrigerant gas R134a and compressor oil in the system as per requirement respectively, servicing/replacing and descaling of chiller plant any type of spare parts of chiller unit as and when required related to compressors, thermostat, cut outs, micro processor unit control modules of the plant, control boards, pressure tensducer, sensors, capacity transducer, phase protector, timer, chillers/condensing unit water cooled screw chiller compressors, evaporators, expansion valves, water cooled condensers, oil cooler, oil pipings, oil filters, refrigerant pipings, refrigerant filters, solenoid and automatic control valves etc for under mentioned models of Make - Daikin, complete with the following all as specified and directed : - [a] Water cooled screw chiller type Model – PFS 1101 DBRY – 3 x 100 TR capacity including the operations specified. SM/MES No : 977/225/CH/17, 977/226/CH/17, 977/227/CH/17, Dt of Installation 30 Jun 2017.

M&L for preventive and comprehensive maintenance of central AC chiller Plant of capacity 4x66 TR Air cooled screw chiller type Model – KAS 070.14 at Annx I & II Building through the OEM of Kirloskar (As per MOU) for following plants and equipments by Checking the functioning of Chiller unit/Air Handling unit/Pumps/Cooling tower/Controls and all such equipment covered installed, Descaling of condensers/chemical cleaning of evaporator coils/replacement of pre filters based as per requirement and Replenishing refrigerant gas R134a and compressor oil in the system as per requirement respectively, servicing/replacing and descaling of chiller plant any type of spare parts of chiller unit as and when required related to compressors, thermostat, cut outs, micro processor unit control modules of the plant, control boards, pressure tensducer, sensors, capacity transducer, phase protector, timer, chillers/condensing unit Air cooled screw chiller compressors, evaporators, expansion valves, Air cooled condensers, oil cooler, oil pipings, oil filters, refrigerant pipings, refrigerant filters, solenoid and automatic control valves etc for under mentioned models of Kirloskar Make - KAS 070.14, complete with the following all as specified and directed : - [a] Air cooled screw chiller type Model – KAS 070.14 – 4 x 66 TR capacity including the operations specified. SM/MES No -408/101/CH-I/14, 408/101/CH-II/14, 408/101/CH-III/14, 408/101/CH-IV/14

M&L for preventive and comprehensive maintenance of central AC chiller Plant of capacity 2x75 TR Air cooled screw chiller type Model – KAS 070.14 at Annx III Building through the OEM of Kirloskar (As per MOU) for following plants and equipments by Checking the functioning of Chiller unit/Air Handling unit/Pumps/Cooling tower/Controls and all such equipment covered installed, Descaling of condensers/chemical cleaning of evaporator coils/replacement of pre filters based as per requirement and Replenishing refrigerant gas R134a and compressor oil in the system as per requirement respectively, servicing/replacing and descaling of chiller plant any type of spare parts of chiller unit as and when required related to compressors, thermostat, cut outs, micro processor unit control modules of the plant, control boards, pressure tensducer, sensors, capacity transducer, phase protector, timer, chillers/condensing unit Air cooled screw chiller compressors, evaporators, expansion valves, Air cooled condensers, oil cooler, oil pipings, oil filters, refrigerant pipings, refrigerant filters, solenoid and automatic control valves etc for under mentioned models of Kirloskar Make - KAS 070.14, complete with the following all as specified and directed : - [a] Air cooled screw chiller type Model – KAS 070.14 – 2 x75 TR capacity including the operations specified. SM/MES No -408/101/CH-IV/14, 408/102/CH-II/14

M&L for preventive maintenance /cleaning of cooling tower =02 Nos of capacity 150 TR at technical area fitted with CT fan motor cap 5.5KW/7.5HP the bottom tub shall be cleaned thoroughly by necessary cleaning agent including checking of serviceability of CT fan tightness and bearing smoothness,fan blade tightness ,correctness of alignment of circular type sprinkler branch line and ensuring periodical cleaning / proper supply of water from and cleaning and maint of 10 Nos AHUs (AHU capacity 6500 CFM qty - 03, AHU capacity 8500 CFM qty - 02, AHU capacity 11000 CFM qty - 05) with cleaning agent of all AHU Filters all as directed by Engr-in-charge. Note : (i) entire Cleaning /servicing activities to be carried out quarterly by a qualified technician/helper and paid as one Job. (ii) Any type of T&P and cleaning agent such as detergent,wire brush etc required shall be arranged by the contractor and rate for the same shall be included in the quoted rate. (a) SM/MES No -408/394/CT-1/19, 408/395/CT-2/19 (Installation No 1) (b)SM/MES No -408/389/CT-1/19, 408/390/CT-2/19 dt 31 Jan 2019.(Installation No.2)

M&L for preventive maintenance /cleaning of cooling tower =02 Nos of capacity 120 TR at New Tech Flight fitted with CT fan motor cap 5.5KW/7.5HP the bottom tub shall be cleaned thoroughly by necessary cleaning agent including checking of serviceability of CT fan tightness and bearing smoothness,fan blade tightness, ,correctness of alignment of circular type sprinkler branch line and ensuring periodical cleaning / proper supply of water from make up tank and cleaning and maint of 08 Nos AHUs (AHU capacity 6500 CFM qty - 03, AHU capacity 11000 CFM qty - 05) with cleaning agent of all AHU Filters all as directed by Engr-in-charge. Note : (i) entire Cleaning /servicing activities to be carried out quarterly by a qualified technician/helper and paid as one Job. (ii) Any type of T&P and cleaning agent such as detergent,wire brush etc required shall be arranged by the contractor and rate for the same shall be included in the quoted rate.

M&L for preventive maintenance /Overhauling of Air-Handling Unit of AC Plant of capacity 66 TR x 4 Nos installed at Annx I & II Service Bldg including coil changing, cleaning of AHU drain, replacement of hessian cloth with chain, heat varnishing, baking, connecting plates, checking of all electrical connections (removing of carbon deposits if any), pre-filter and micro filter cleaning & greasing of bearings, AHU V Belts, thermostat & humdistate, Total Number = 11 No of AHU Floor mounted/Ceiling mounted of different capacitiescomplete all as specified and as directed. Note : (i) entire Cleaning /servicing activities to be carried out quarterly by a qualified technician/helper and paid as one Job. (ii) Any type of T&P and cleaning agent such as detergent,wire brush etc required shall be arranged by the contractor and rate for the same shall be included in the quoted rate.

M&L for preventive maintenance/Overhauling of Air-Handling Unit of AC Plant of capacity 75 TR x 2 Nos installed at Annx III Service Bldg including coil changing, cleaning of AHU drain, replacement of hessian cloth with chain, heat varnishing, baking, connecting plates, checking of all electrical connections (removing of carbon deposits if any), pre-filter and micro filter cleaning & greasing bearings, AHU V Belts, thermostat & humdistate, Total Number = 12 Nos of AHU Floor mounted/Ceiling mounted of different capacities complete all as specified and as directed. Note : (i) entire Cleaning /servicing activities to be carried out quarterly by a qualified technician/helper and paid as one Job. (ii) Any type of T&P and cleaning agent such as detergent,wire brush etc required shall be arranged by the contractor and rate for the same shall be included in the quoted rate.

M&L for disconnecting and taking down mechanically and electrically unserviceable primary water pump motor 03 HP capacity for chiller unit, and shifting to civil workshop, dismantling the electric motor and removing burnt out windings, cleaning the slots, rewinding with super enemelled copper winding wire as per existing gauge and size varnishing and drying complete, reassembling, replacing the ball bearings as per existing size and make and transporting to site and re-fixing at original position, connecting electrically and mechanically, testing for satisfactory working all as directed.

M&L for disconnecting and taking down mechanically and electrically unserviceable primary water pump motor 05 HP capacity for chiller unit, and shifting to civil workshop, dismantling the electric motor and removing burnt out windings, cleaning the slots, rewinding with super enemelled copper winding wire as per existing gauge and size varnishing and drying complete, reassembling, replacing the ball bearings as per existing size and make and transporting to site and re-fixing at original position, connecting electrically and mechanically, testing for satisfactory working all as directed.