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| 1 | Annual Comprehensive Maintenance of Central AC Plant 26 TR capacity as per the descriptions enumerated below through OEM(Bluestar)/Authorised dealers:-(a) Compressor: Checking lubrication oil (level & leakage) and maintain the level by make up if any, Check operation of safety controls, valves and instruments. (b) CONDENSER / EVAPORATOR OF ALL CENTRAL CHILLING PLANTS & COOLINGCOILS OF AHUs : Check entering and leaving water temperatures, refrigerant pressures and all others parameters. Check tubes and if require, de-scaling shall be carried out by the contractor using special chemicals, Check pressure setting of safety control switches. Check for operation of safety valves. Welding/brazing of leakage points, minor leaks etc.,(c) ALL PUMPS (CONDENSOR, CHILLERS, PROCESS, WATER TREATMENT PLANT, ETC. ): Check gland packing and mechanical seals for leakage, Replace gland thread/ mechanical seal if required, Lubricate bearings with grease gun. |
| 2 | (d) INSTRUMENTS & CONTROLS ; checking of operation of all controls, sensors, measuring devices, electronic control cards etc.,Readjustment of control if necessary ,Checking of Refrigerant level sensor, water level sensor, photo sensor, pressure transducer, thermostat, temperature controller with sensor and display, thermocouple, temperature gauge, sight glass, solenoid valves, pressure gauge, oil safety switch, HP/LP cut out, DP switch, flow switch, crank case heater, thermostatic expansion valve, thermostat (operating & antifreeze) smoke detector, air stat, safety valve, limit switch, humidistat, etc... |
| 3 | (e) REFRIGERANT PIPING:Check for leaks at the joints with soap solution test. Repair and replace refrigerant pipes, Checking of WATER PIPING, VALVES & FITTINGS for leaks at the joints. &for leakage from valve glands. (f)A.H.U.: Check condition of drive coupling, sleeves. Belts, pedestal bearings and alignment ,Clean Air filters, check for proper drainage of condensate.(g) DUCT/ DAMPERS (FIRE/VOLUME CONTROL) & GRILLS: Check for any air leakage in the duct ,Check for any insulation damage for ducts, Check for functional operation of dampers and grilles. Lubricate pins of dampers, grilles, wherever required. Check louvers for any damage and cleaning shall be followed. (h) FAN COIL UNIT: Cleaning air filter, strainer, Check for the operation of fan speed regulator ,Motor bushing oiling etc., |
| 4 | ELECTRICAL MAINTENANCE: (a) MOTOR (COMPRESSOR, PUMP, AHU, FCU, BLOWER, COOLING TOWER etc):Cleaning of motor, Lubricate bearings, Check for proper glanding & tightness of connections(b)ELECTRICAL PANELS AND THEIR CABLING & WIRING: Check for any tripping, chattering in the electrical parts, abnormal noise, overheating in the panels, Check whether indication lamps are working, Check for the proper working of all ammeters, voltmeters, Hour meters, KWh meters, overload relays, contactors malfunction etc., Clean the panels from inside with the help of the blower/ vacuum cleaners ,Check all the cables for overheating, tightness of the glands, lugs & crimping, Check the fuse-link & fuse holders. Check the control wiring of the panel along with the controls for the proper functioning and tripping at the preset parameters. (c) AIRCONDITIONING UNITS :• Check proper locking of inspection doors/cover and their leakages. Clean Air filters, check for proper drainage of condensate. Cleaning of air filters. Cleaning of Cooling Coil and Condenser with nylon wire brush and air blower. Inspect blower fan motor drive, check tension of V-Belt, bearings, alignments, vibration isolator, electrical connections etc. Lubrication, wherever necessary all as specified anddirected. |
| 5 | Note:- (i) Compulsory servicing of the entire AC plant to be carried out every quarterly (04 times during the contract period) through OEM/authorized dealers only and the rates quoted are deemed to include for the same.(ii) The compressor will be checked for its proper functioning and if any defect is found, the same shall be repaired /replaced. (iii) Safety controls such as pressure cut outs will be tested for proper functioning and in case of any mal-functioning they shall be either repaired or replaced accordingly.(iv) Air filters shall be inspected and cleaned or replaced, if necessary.(v) Cooling coil shall be inspected and cleaned. |
| 6 | (vi) The blower motor shall be checked and any defects noticed shall be attended to.(vii) The driver set of the blower section shall be inspected, belt tension adjusted and belts changed ,if necessary.(viii) Any defect in the electrical items and control wiring will be attended to.(ix) Refrigerant gas shall be topped up in the system as and when necessary.(x) Activities applicable to Water cooled units :-a. Condenser water pumps with motors shall be checked for satisfactory functioning. Any repairs to them, if necessary, will be carried out by Contractor.b.Cooling tower nozzles shall be inspected and attended to for proper spray and replaced, if, necessary.c. Contractor shall carryout cleaning of the cooling tower sump once in a year. |
| 7 | (xi) Activities applicable to Air Cooled Units:-(a)The Condenser fan motor shall be attended to.(b)The Condenser coil shall be inspected and cleaned (c) Any repairs in the condenser coil shall be attended to. (d) Repairs to refrigerant piping due to system problems shall be attended to.(xii) All the breakdown calls shall be attended by trained personnel (xiii) Cost of necessary spare parts (except coil and fine filters) and labour charges shall be covered in AMC.(xiv) Cost of necessary consumables including refrigerant gas top-up in the system and the labour charges shall be covered in AMC.(xv) Only genuine parts shall be used. |
| 8 | (xvi) Maintenance chart to be submitted within first five working days of every month and the maintenance job needs to be carried out once every month as per the directions of Engr-in-charge . If Contractor fails to submit the maintenance chart within thestipulated timeRs. 1000.00 per day will be recoveredas penalty till submission of Chart. |
| 9 | Material and labour for descaling of condenser unit 26 TR (6 Nos) by circulating dilute hydrochloric acid solution and cleaning the tubes wit wire brush by removing the side cover till the tubes are thoroughly cleaned and re-circulating the fresh water after fixing the side cover wit necessary gasket and bolt and nuts complete all as specified and as directed |
| 10 | Supply and replacement of FRP coated forced type Cooling Tower 250 USGPM capacity suitable for 2 x 26 TR capacity central AC Plant including replacement of cold water basin, cooling tower structure, fills, drift eliminators, cooling tower fan, water distribution piping, fan deck & fan cylinder, cooling tower louvers, gear box/ drive shafts & mechanical equipment support, valves, nozzles and ensuring CT fan position for perfect balancing and proper rotation after replacement and testing for satisfactory entering water temperature in the condenser unit including taking down old unserviceable unit complete all as specified and as directed |
| 11 | Supply and laying in repairs 40mm (outer dia) 3 layers PP-R polypropylene random copolymer) pipes SDR 7.4 and SDR 11 UV stabilized and antimicrobial fusion welded having thermal stability for hot and cold water supply including all PP-R plain and brass threaded polypropylene random fittingslaid in trenches, complete all as specified and as directed |
| 12 | Supply and laying in repairs 32mm (outer dia) 3 layers PP-R polypropylene random copolymer) pipes SDR 7.4 and SDR 11 UV stabilized and antimicrobial fusion welded having thermal stability for hot and cold water supply including all PP-R plain and brass threaded polypropylene random fittings laid in trenches, complete all as specified and as directed |
| 13 | Supply and laying in repairs 32mm (outer dia) 3 layers PP-R polypropylene random copolymer) pipes SDR 7.4 and SDR 11 UV stabilized and antimicrobial welded having thermal stability for hot and cold water supply including all PP-R plain and brass threaded polypropylene random fittings fixed complete to walls, ceiling or in floors etc, complete all as specified and as directed |
| 14 | Making connection of PP-R distribution branch with Gl main of the 25mm to 50mm bore pipes sizes by providing and fixing tee including cutting and making joint etc, complete all as specified and as directed |
| 15 | Supply and fix in repairs 40mm (outer dia) PP-R Gate Valves (brass insert) as per requirement of the site complete all as specified and as directed |
| 16 | Supply and fix in repairs 32 mm (outer dia) PP-R Gate Valves (brass insert) as per requirement of the site complete all as specified and as directed |
| 17 | Material and labour for comprehensive mainatainance of Humidifier system including necessary electrical connections during the entire AMC period complete all as specified and as directed |
| 18 | Excavating in trenches, not exceeding 1.5m wide and not exceeding 1.5m in depth; for laying pipes and getting out in any type of soil, complete all as specified and as directed |
| 19 | Returning, filling in including spreading, levelling, watering and well ramming in layers not exceeding 25 cm in any type of soil, complete all as specified |
| 20 | Material and Labour for removing excavated soils not exceeding 50m and depositing where directed at a level not exceeding. 1.5m above the starting point complete all as specified and as directed by the Engineer-in-Charge |
| 21 | Cutting existing bituminous road and excavating in trenches, not exceeding 1.5m wide and not exceeding 1.5m in depth by cutting existing bituminous road not exceeding 10 sq. m on plan and not exceeding 1.5m in depth and getting out in hard/dense soil, complete all as specified |
| 22 | Demolition, Cement concrete (unreinforced) in ground floors and pavings not exceeding 15 cm thickness (below or above ground level) complete all as specified and as directed by the Engineer-in-Charge. |
| 23 | Material and Labour for 100 mm thick cement concrete 1:2:4 type B-1, using 20mm graded aggregate for making good the disturbed road surface after laying of pipe line over returned filled and compacted earth surface to match with existing road level complete all as specified and as directed |
| 24 | Supply and fixing in repairs Pressure Gauge 4\" dial, 0-21 kgs rating, complete all as specified and as directed |
| 25 | Material and labourfor earthing complete with galvanised steel earth plate electrode 60cmx60cmx 6mm thick, buried directly in ground (earth pit not less than 225 metres deep below ground level) with top edge of the plate not less than 1.5 metres below normal ground level, connected to galvanised earth lead wire 4.0mm dia as earthing lead by means of bolts, nuts, check nuts and washers of copper all as shown in electrical plate No. 3 in SSR part 1 (2010 edition) connected to earthing test point, including 20 mm GI pipe (Medium grade) for watering and 40 mm Gl pipe (Medium grade) for protection of earth strip and etc.. including testing on completion, PCC chambers in PCC1:3:6 type C1, RCC M25 type cover slab 50mm thick with 8mm dia TMT HCR/CRS steel bars at 140mm C/C both way and lifting handle Gl funnel & wire mesh, funnel lugs and charcoal, salt etc all as applicable complete all as specified and as directed by the Engineer-in-Charge |
| 26 | Material and labourfor earthing complete with galvanised steel earth plate electrode 60cmx60cmx 6mm thick, buried directly in ground (earth pit not less than 2.25 metres deep below ground level) with top edge of the plate no less than 1.5 metres below normal ground level, connected to 32xômm GI strip as earthing lead by means of bolts, nuts, check nuts and washers of copper all as shown in electrical plate No.3 connected to earthing test point, including 20 mm GI pipe (Medium grade) for watering and 40 mm Gl pipe (Medium grade) for protection of earth strip and etc. including testing on completion, PCC chambers in PCC1:3:6 type C1, RCC M25 type cover slab 50mm thick with 8mm dia TMT HCR/CRS steel bars at 140mm C/C both way and lifting handle Gl funnel & wire mesh, funnel, lugs and charcoal, salt etc all as applicable complete all as specified and as directed by the Engineer-in-Charge |
| 27 | Supply and fix three phase direct online starter suitable for 1 HP-5 HP Pump/motor including necessary electrical connections and taking down old unserviceable complete all as specified and as directed |
| 28 | Supply and fix three phase Star delta starter, suitable for 10 HP-15HP Pump/motor, including necessary electrical connections and taking down old unserviceable all as directed. |
| 29 | Supply and fixing in repairs Air filter for AHU including connecting accessories all as applicable complete all as specified and as directed by the Engineer-in-Charge |
