REPAIR AND MAINTENANCE OF CENTRAL AND PACKAGE AC PLANTS AT AFS HAKIMPET UNDER GE (AF) HAKIMPET

Amount

De-Scaling of the Condenser for Central Air Conditioning Plant by circulating De-scaling agent (HCL) through the condensers by forced feed type method by removing the end covers of the condensers carefully, cleaning each tube of the condenser internally by brushing without damaging the tubes and re-fixing back the end covers with new rubber gasket, nuts, bolts and washers and pressure testing complete all as specified and as directed for the following :-

30 TR Capacity

16.5 TR Capacity

15 TR Capacity

Cleaning of the evaporator coil for central air conditioning plat with cleaning agent by forced feed method to remove the unwanted dust formed over the cooling coil fins without disturbing the mounting of the coils and greasing to the AHU blower bearing and tightening of all fasteners etc complete all as specified and as directed for the following :-

30 TR Capacity

16.5 TR Capacity

15 TR Capacity

Cleaning of the evaporator coil for package type air conditioning plant with cleaning agent by forced feed method to remove the unwanted dust formed over the cooling coil fins without disturbing the mounting of the coils and greasing to the AHU blower bearing and tightening of all fasteners etc complete all as specified and as directed for the following :-

10 TR Capacity

5.5 TR Capacity

Taking out the burnt electric motor of capacity 3 to 5 HP from existing position, transporting to civil work shop, separating the stator and rotor housing, cutting and removing the existing winding of stator completely, cleaning the slots and rewinding with existing gauge of super enamelled copper winding wire with suitable insulation, applying insulation varnish and heating in heating chamber till completely dried and reassembling the motor including supply and replacement of DE(01 No.)&NDE(01 No) bearings (make: NBC/SKF/TATA), transporting back to site and re-installing in its original position including proper alignment for smooth running and testing on completion complete all as specified and as directed.

All as per item No. 04 here-in-before but of capacity 15 to 25 HP -ditto-

Material and labour for leak testing of complete refrigerant system for central air conditioning plant by pumping down the refrigerant into empty cylinders, flushing out the entire system, replacing the damaged flare fittings, washers,'O'rings, gaskets, bracing etc for prevension of any leakages and leak testing by supply and charging with nitrogen gas, observing the pressure for a period of 24 hours for confirmation, flushing out the system, vacuumising and charging the required quantity of refrigerant and lubricant and testing the system complete all as specified and as directed. Note: Refrigerant gas and compressor oil for topping up will be measured and paid separately under relevant items of Sch 'A'.

30 TR Capacity

16.5 TR Capacity

15 TR Capacity

Material and labour for leak testing of complete refrigerant system for package type air conditioning plant by pumping down the refrigerant into empty cylinders, flushing out the entire system, replacing the damaged flare fittings, washers,'O'rings, gaskets, bracing etc for prevension of any leakages and leak testing by supply and charging with nitrogen gas, observing the pressure for a period of 24 hours for confirmation, flushing out the system, vacuumising and charging the required quantity of refrigerant and lubricant and testing the system complete all as specified and as directed. Note: Refrigerant gas and compressor oil for topping up will be measured and paid separately under relevant items of Sch 'A'.

10 TR Capacity

5.5 TR Capacity

Material and labour for complete checking and servicing of control wiring for the AC plant microprocessor based control panel and connected programmed safety features, safety switches/ cut-outs / thermostats etc, removing and re-terminating the burnt wires, checking of all contactors/contacts for proper auto functioning and rectifying the faults/ faulty components by replacing with new spares and setting the relays setting of programming of operating parameters and safety limits ( if required) etc complete all as specified and as directed. Note: Spares will be measured and paid separately under relevant items of Sch 'A'

Taking out the defective pump set of capacity 3 to 5 HP of Make, Model fo any type from existing position by carefully disconnecting all water pipe lines and electrical cables and carrying out overhauling by dismantling the pump casing, cleaning of the impeller and supply and replacement of Gunmetal bush(01 No), gland plate (01 No.) alongwith studs, nuts, gland packing rope, greasing and re-assembling and re-installing in its original position and testing on completion complete all as specified and as directed.

All as per item No. 09 here-in-before but of capacity 7.5 HP of Make Beacon, Model DM6Make, Model fo any type complete all as specified and as directed.

Dismantling the compressor of any Make of capacity 15 TR from installed position after disconnecting the suction and discharge refrigerant line, open the compressor for carrying out the repairs/ replacement of unserviceable parts, setting of valve reeds, valve plates, bearings, loading and unloading mechanism, pistons with rings, oil seals, oil pumps, crank shaft, lathe work as required etc after carrying out necessary lathe work for grinding and polishing the worn out seatings/ housing of the compressor body and assembling with essential minor parts i.e. split pins, nuts, bolts, washers, rubber rings etc and fixing in its position including testing for proper functioning complete all as specified and as directed.

Dismantling the compressor of Make:Voltas, Model: CWCDR030 of capacity 30 TR from installed position after disconnecting the suction and discharge refrigerant line, open the compressor for carrying out the repairs/ replacement of unserviceable parts, setting of valve reeds, valve plates, bearings, loading and unloading mechanism, pistons with rings, oil seals, oil pumps etc after carrying out necessary lathe work for grinding and polishing the worn out seatings/ housing of the compressor body and assembling with essential minor parts i.e. split pins, nuts, bolts, washers, rubber rings etc and fixing in its position including testing for proper functioning complete all as specified and as directed.

Dismantling the compressor of Make:Voltas, Model: WCUR017 of capacity 16.5 TR from installed position after disconnecting the suction and discharge refrigerant line, open the compressor for carrying out the repairs/ replacement of unserviceable parts, setting of valve reeds, valve plates, bearings, loading and unloading mechanism, pistons with rings, oil seals, oil pumps etc after carrying out necessary lathe work for grinding and polishing the worn out seatings/ housing of the compressor body and assembling with essential minor parts i.e. split pins, nuts, bolts, washers, rubber rings etc and fixing in its position including testing for proper functioning complete all as specified and directed by Engineer-in-Charge. Note for item No. 11 to 13 - Major Spare Parts required for replacement, compressor oil and refrigerant gas shall be measured and paid separately as "supply/filling only" under relevant items of Sch 'A'.

Supply and fix water pressure gauge analog type 0-100 PSI, 4'' dia including taking down existing unserviceable pressure gauge complete all as specified and as directed. Make: 'H' Guru / Fiebig

Supply and fix pressure relief valve 0-350 PSI including taking down existing unserviceable pressure relief valve complete all as specified and as directed. Make: Indfos / Danfos

Supply and fix oil pressure gauge round, wall/ panel mounting type flanged 4'' dia, 0-300 PSI alongwith suitable brass adopter/ flare nuts including taking down existing unserviceable pressure gauge complete all as specified and as directed. Make: 'H' Guru / Fiebig

Supply and fix low pressure gas gauge 0-150 PSI and 0 to -30 alongwith suitable brass adopter/ flare nuts including taking down existing unserviceable pressure gauge complete all as specified and as directed. Make : 'H' Guru / Fiebig

Supply and fix high pressure gas gauge 0-300 PSI alongwith suitable brass adopter/ flare nuts including taking down existing unserviceable pressure gauge complete all as specified and as directed. Make: 'H' Guru / Fiebig

Taking down the existing UNSV expansion valve supply and fixing new thermostatic expansion valve suitable for 15 TR to 30 TR capacity central air conditioning plant including cutting and bracing including taking down existing unserviceable thermostatic expansion valve complete all as specified and as directed. Make: Sporlan / Indfos / Danfos

All as per item No 19 here-in-before but of 5.5 TR to 10 TR capacity package type air conditioning plant complete all as specified and as directed.

Isolating/Disconnecting and dismantling of UNSV compressor 5.5TR capacity from package type AC unit and supply and fixing with new hermetically sealed scroll compressor of 5.5 TR capacity including leak testing and pressure testing, vaccumising and gas changing with R-22 refrigarent including testing etc complete all as specified and as directed. Make :- Samsung/panasonic/copeland or any other make as per existing. Note :- Refrigarent required to change the system shall be measured and paid seperately under respective item of BOQ.

Taking down the existing UNSV catch all filter supply and fixing the new catch all filter 5/8" x 5/8" model No C-16M with all connected fittings complete all as specified and as directed.

Supply only refrigerant gas R-22 for topping up complete all as specified and as directed.

Supply only refrigerant gas R-410a for topping up complete all as specified and as directed.

Supply only compressor oil Freezol 68 for topping up. Make : HP/Bharat/ Indian Oil)

Supply and replace wall mounting type thermometer wet/dry bulb type complete all as specified and as directed Make : Indfos / Danfos / ThermoX

Supply and replace 'V' belt A-28 complete all as specified and as directed. Make : Dunlop / Pix / Turboflex

Supply and replace in repairs 'V' belt B-68 complete all as specified and as directed. Make : Dunlop / Pix / Turboflex

Supply and replace in repairs 'V' belt B-74 complete all as specified and as directed. Make : Dunlop / Pix/ Turboflex

Supply and replace in repairs 'V' belt B-78 complete all as specified and as directed. Make : Dunlop / Pix / Turboflex

Supply and replace in repairs 'V' belt B-110 complete all as specified and as directed. Make: Dunlop / Pix / Turboflex

Supply and replace in repairs 'V' belt C-80 complete all as specified and as directed. Make: Dunlop / Pix / Turboflex

Supply and replace power contactor 3 pole, 415 volts, 50 Hz type ML-1 (Make: L&T) with auxiliary supply 240 Volts complete all as specified and as directed.

All as per item No. 33 here-in-before but of type ML-2 -ditto-

All as per item No. 33 here-in-before but of type ML-3 -ditto-

All as per item No. 33 here-in-before but of type ML-6 -ditto-

Supply and replace power contactor 45 Amps, 4 pole, 415 volts, 50 Hz complete all as specified and as directed.

Supply and replace HRC fuse 32 Amps rating, 415 Volts, 50 Hz Make: Standard / HPL / C&S

Supply and replace HRC fuse 63 Amps rating, 415 Volts, 50 Hz Make: Standard / HPL / C&S

Supply & fix push button flush headed Green/Red suitable for panel mounting Make: L&T / C&S / HPL

Supply & replace LED pilot light indicator lamps R/Y/B, 230 Volts, 50 Hz Make: L&T / C&S / HPL

Supply & replace Analog Ammeter, AC, 3Ph CT operated -/5A, accuracy class 1.0 for working on 240V AC auxiliary supply, 4'' x 4'' size, suitable for panel mounting complete all as specified and as directed. Make: L&T / AE / MECO / CONZERV

All as per item No. 42 here-in-before but of direct type of range 0-100A -ditto-

Supply & replace analogue voltmeter, AC 3 Ph of size 4'' x 4'', accuracy class 1.0, suitable for panel mounting complete all as specified and as directed. Make: L&T / AE / MECO / CONZERV

Supply & replace indoor type, tape insulated ring type LT, 415 Volts, 50 Hz, AC Current Transformer of ratio 100/5A of accuracy class 1.0 complete all as specified and as directed. Make: Kappa / AE / Legrand

All as per item No. 45 here-in-before but of ration 200/5 A -ditto-

Supply and replace Polyurethane (PU) Coiled Air Hose of size 8mm (OD), 5mm (ID) and standard linear length 15 Mtrs alongwith suitable push and pull adopter complete all as specified and as directed. Make: KBL or any other Make with ISI Mark)

Supply and fixing pre filter for AHU of size 63x50x4.5 cm or nearest size as per existing one complete all as specified and as directed.

Supply and fixing micro filter for supply duct inlet of size 55x55x14 cm or nearest size as per existing one complete all as specified and as directed.

Painting of complete AC plant including compressor, cooling tower, motor, pipe line, any iron structure, installation board etc of any capacity installed at various locations with synthetic enameled paint over a coat of red oxide primer including writing of plant capacity, SM/MES no or other details as per existing complete all as specified and as directed.

Taking down the existing UNSV MCCB 63 A, 16 KA and Supply, Fixing and testing of MCCB 4 pole 63 Amp, 16 KA capacity 415 volts rupturing capcity 16KA complete all as specified and as directed.

Taking down the existing UNSV MCCB 100 A, 16 KA and Supply, Fixing and testing of MCCB 4 pole 100 A, 16 KA capacity 415 volts rupturing capcity 16 KA complete all as specified and as directed.

Taking down the existing UNSV MCCB 250 A, 35 KA and Supply, Fixing and testing of MCCB 4 pole 250 A, 35 KA capacity 415 volts rupturing capcity 16KA complete all as specified and as directed.

Supply and fix, Thermal Over Load Relay type MN5, relay range 10-50Amp complete all as specified and as directed. Make : L&T, ABB, Siemens, Legrand, Schneider as approved by GE.

Supply and fix , Sprinkler hub assembly/Nozzle assembly with PVC pipes including dummies from 15TR to 30TR capacity cooling towers complete all as specified and as directed.

Restoration of Electrical panel of AC plants by cleaning all the panels cubicles, required painting where ever necessary and taking out un servicable electrical parts, replacing with new control wiring/cables terminations, connectors complete all as specified and as directed. Note : Required Electrcial parts shall be paid separately

Supply & fix various sizes of pillow block bearing suitable for 5000Cfm to 10000Cfm AHU complete all as specified and as directed. Make: SKF, NBC, Tata

Removing unserviceable existing fills from cooling tower and Supply and fixing new CPVC fills with honeycomb design including maintenance of basement of fills of any capacity cooling tower complete all as specified and as directed.

S&F in repairs, supporting system of air conditioning plant including all accessories of plants i.e. AHU, Pumps, Cooling tower, pipe lines etc., modification/alternation of existing elements using size of steel elements, plates, angles iron, flat, cross arms, bracing supports, clamps from structural steel sections including nuts, bolts, washers, welding, bending cold or hot, drilling holes for bolts in any shape or size including painting with two coats of synthetic enamel paint over a coat of primer complete all as specified and as directed.

Supply only, cooling fan blades for motors of various capacities complete all as specified and as directed.

Taking down unserviceable shaft from centrifugal pumpset/ monoblock /AHU, carrying out welding and turning of shaft on lathe machine and refixing the same back in original location and testing of pumpset/motor complete all as specified and as directed. Note: Rate quoted shall be deemed to include the cost of taking shaft to workshop and back for carrying out repairs.

S&F in repairs, to cooling tower bottom by fibre reinforcing complete all as specified and as directed.

S&F in repairs, to cooling tower body by fibre reinforcing complete all as specified and as directed.

S&F in repairs, PVC side screen for cooling tower complete all as specified and as directed.

M&L, PCC 1:2:4 type B-2 using 40mm graded stone aggregate as in foundation, filling and mass concrete complete all as specified and as directed.

Dismantling and taking out unserviceable canvas cloth box from AHU unit, supply and fixing new canvas cloth box including mild steel frames, refixing with new nuts, bolts, washers, gasket etc., testing complete all as specified and as directed.

Disconnecting blower shaft of AHU 7.5TR to 40TR capacity, taking out the defective shaft, remetalling, grinding, machining and balancing the shaft, refixing and realigning the blower including testing complete all as specified and as directed. Note: Rate quoted shall be deemed to include cost of taking shaft to workshop and back

Taking down diffusers and return air ducts, cleaning of the dust particles by high pressure spray system till clearing of the dust on the diffusers and return air ducts, and subsequent cleaning using detergent water complete all as specified and as directed.

Dismantling and taking out unserviceable insulation, supply and fixing thermal insulation to exposed duct with fibre glass wool 50mm thick (Density 48Kg/Cum) complete all as specified and as directed.

Taking down non return valve from existing position, carrying out repairs to non return valves of sizes 65 to 100mm dia by opening cover plate, welding the disc, spindle, cleaning and refxing back to its original position complete all as specified and as directed.

Disconnecting microprocessor based control panel of chiller package AC plant of capacity 5.5 TR to 10TR, Make Voltas and removing unserviceable PCB, supply and fixing new PCB to microprocessor based control panel, refixing to chiller package and programming the entire panel for smooth functioning, testing complete all as specified and as directed. Note: Work shall be carried out through OEM.

Supplying, laying, jointing, testing and commissioning 1100 volts grade, 3.5core 120Sqmm LT XLPE insulated, as per IS-7098 (Part-I), 1988 galvanized steel strip or wire armoured, heavy duty, electric cables, with multistranded aluminium conductor laid in trenches/passing through pipe/duct/ road crossing or fixed on poles, walls with suitable size clamps made out of mild steel flat iron including jointing material such as crimping type lugs, brass cable glands, heavy duty double compression type etc., including taking down old unserviceable cables complete all as specified and as directed.

All as per item No 72 above but 3.5 core 50Sqmm -ditto-

All as per item No 72 above but 3.5 core 35Sqmm -ditto-

All as per item No 72 above but 3.5 core 16Sqmm -ditto-

Supply, laying, welding, fixing, leak proof testing and commissioning of 150mm bore, medium grade mild steel ERW pipes conforming to IS 1239 with bitumen wrap coating over the external surface of the pipe including necessary specials/fittings and taking down old unserviceable pipe complete all as specified and as directed. Make : TATA, JINDAL, PRAKASH Note: Excavation and earthwork will be measured and paid separately.

All as per item no 76 above but for 100mm bore of pipe but conforming to IS 1239 -ditto-

All as per item no 76 above but for 80mm bore of pipe but conforming to IS 1239 -ditto-

All as per item no 76 above but for 50mm bore of pipe but conforming to IS 1239 -ditto-

Supply only, 50mm dia Butterfly valve in CI body with integrally moulded liner of nitrile or EPDM, stainless steel disc & stem, lever operated, ISI marked including bolts, nuts and washers complete all as specified and as directed.

All as per item no 80 above but 80mm bore Butterfly Valve -ditto-

All as per item no 80 above but 100mm bore Butterfly Valve -ditto-

Supply only, 20mm dia Gun metal, globe or gate valves with iron wheel head, ISI marked complete all as specified and as directed.

All as per item No 83 above but 25mm dia globe or gate valve -ditto-

All as per item No 83 above but 40mm dia globe or gate valve -ditto-

All as per item No 83 above but 50mm dia globe or gate valve -ditto-

Supply and fix 20mm bore premium PTMT Ball valves, high pressure, with epoxy coated aluminium rod and high density plastic ball and fly nut complete all as specified and as directed.

Supply and fix 25mm bore premium PTMT Ball valves, high pressure, with epoxy coated aluminium rod and high density plastic ball and fly nut complete all as specified and as directed.

Supply & fix mild steel flanges, thickness 6mm, class 'C' duly drilled holes with nuts, bolts, washers, rubber gasket etc., for 50mm bore complete all as specified and as directed.

All as per item No 89 above but for 80mm bore -ditto-

All as per item No 89 above but for 100mm bore -ditto-

All as per item No 89 above but for 150mm bore -ditto-

Supply only timer 0.3 to 30 Sec complete all as specified and as directed. Make: GE, SIEMENS, L&T, C&S, SCHNEIDER

Disconnecting and removing of unserviceable pressure transducer / sensor from the existing position, supply and fixing new pressure transeducer including testing complete all as specified and as directed. Make: Danfoss, ALERTON

Disconnecting and removing of unserviceable oil sensor from chiller, supply and fixing new oil sensor including testing complete all as specified and as directed. Make: Danfoss, ALERTON

Supply and fix High (micro) efficiency filters to remove dust particles down to 5 micron with minimum efficiency 99% when tested as per BS 6540 - Part I made out of non woven synthetic/polyester/polypropylene media sandwiched between HPDE mesh on one side for additional coarse filtration and aluminium expanded mesh on the other side for mechanical support, media is encased and sealed in sturdy aluminium for longer life including rubber gasket on flanged with final drop of 20mm Hg, approximate size 600x600x303mm complete all as specified and as directed.

PVC Board of size 3x4 feet for indiaction of the Central AC plant or Package type AC plant details showing with Machine type, capacity, make, sl no, SM No, MES No etc with white letters on the blue background in the complete all as specified and as directed.

Supply and lay Insulation mat of 1 mtr width x 2 mtr length x 3 mm thickness (Voltage grade 11KV) ISI marked IS 15652-2006, (superseding IS 5424), CPRI approved complete all as specified and as directed.

omsai thermax engineers (BID ID -3124875)