annual maintenance and servicing of 75 nos ac machines (different make and capacity) including dismantling & refixing of bothsplit type ac machines including supplying of spare materials for day to day maintenance of air conditioning machines at different offices of commercial tax building, northern block, jalasampad bhawan, salt lake, kolkata-91 during the year 2025-26 (w.e.f. 01.08.2025. to 31.03.2026). (2nd call)- 1 sub-head-iday to day maintenance with labourengagement of proper technical manpower for day to maintenance of different type (window/ split/ cassette/ duct) and capacity (1.0tr/ 1.5tr/ 2.0tr) different make air conditioning machines including replacement of spare items for ac machines to make the machines trouble free.(contractor should arrange his own tools and tackles for the job. labour rates are inclusive of gst, cess, esi, epf, bonus, cp & oh t & p charges) 2 1 no electrician cum ac mechanic/ day x 1 shift/ day x 196 days throughout the periodfrom 01.07.2025 to 31.03.2026 excluding saturdays, sundays & holidays) 3 1 no helper for electrician/ day x 1 shift/ day x 196 days throughout the periodfrom 01.07.2025 to 31.03.2026 excluding saturdays, sundays & holidays) 4 sub-head-iisupply of material for maintenance providing & fixing of isi marked (is : 15778 - 2007) rigid cpvc drain water piping 6 kg/ cm2 with fittings like elbow, socket, tee etc& support with ms hanger on ceiling or recessed in wall with chasing & plastering with 6 mm thick closed cell elastomeric nitrile rubber insulation complete in all respect. 5 20mm dia 6 25mm dia 7 supply, installation, testing & commissioning of suction/ discharge copper pipe line in split air conditioning unit 1.0/1.5 tr/2 tr/3 tr capacity including brazing, nitrile rubber insulation 6/9mm thick class o, etc complete as required. 8 copper tube 1/4 9 copper tube 3/8 10 copper tube 1/2 11 supply & fixing ms powder coated stand suitable for 1.0/1.5/ 2.0 tr outdoor type of split ac. all as per pre-approved by engineer in charge. (wt : 3.2 kg/ unit) 12 2.5 sq mm, cu 3 core pvc insulated and pvc round sheathed cable, volatage grade 1100v, make: havells or equivalent 13 supply capacitor- fan motor- 3mfd/ 450vac, odu of split type ac machine. 14 supplying of motor - ge-e734t/picl-1182 - 900 rpm ( 753 10000008), for split type ac machine(1.5/2.0tr) of different make 15 repairing of pcbrepairing& sensor , for 1.5/2.0tr air conditioning machine (both window and split type). 16 supplying ofbrass fitting -valve - servicevalve 5/8 autocoms for 1.5/2.0 tr (split/ window) type ac machines 17 supplying of brass fitting -valve - service valve1/4autocomcopper pipe compatible with 1.5/2.0 tr (split/ window) type ac machines 18 supplying of remote - handset [ remote control set (universal type)]for 1.5/ 2.0 tr (both split and window type) air conditioning machines 19 gas charging (r410a/eco friendly green gas) of window/split air conditioning unit including flushing of cooling & condensing units with nitrogen gas & rectification of leakage, replacement of filter, flair nut etc.if any. 20 1.5 tr 21 2.0 tr 22 supply of 1.5 v aa battery, make(panasonic oreveready or equivalent) 23 supply of 1.5 v aaa battery, make: (panasonic oreveready or equivalent). 24 supply and installationof splittype room air conditioning machine of following tonnage capacity3 star rating fitted with rotary crompresser and cooling capacity min. 6000 k cal/hr., minimum discharge air flow 5.3 h.8 800cum mtr, 800eer ( w/w) 2.7-2.89.(rates are inclusive of extra refrigerant pipe drain pipe connecting cable) up to the satisfaction of the eic 25 1.5 ton (make : hitachi) 3 star non-inverter type