REPAIR AND MAINTENANCE OF CENTRAL AC PLANT AT FMS AND PACKAGE TYPE AC PLANT AT KIRAN DSS AND ROOPAVANI AUDITORIUM AT AFS TAMBARAM

Amount

Material and labour for general servicing of 8.75 TR, Package type AC Plant Qty-03 sets of Voltas make at Kiran DSS Hangar including carry out the following works: (a) Cleaning of return air filters. (b) Checking of blower fan belts alignment and serviceability.(c) servicing of electrical contral panel board and its wiring of the plant.(d) Cleaning of drain lines.(e) Checking of leakage of gas.(f) Checking of pressure. Note:- 1) The above checks shall be carried out once in every two months and the same shall be measured as one job. 2) If any refrigerent gasis required, the same shall be measured and paid separatelly as supply only against item No-4 here in after.

Cleaning of indoor and outdoor Condenser coil / Evoporator coil as per manufacturers standard practice complete all as specified and directed for AC plant at Hangar. Note:- The above checks shall be carriedout once in every four months and the same shall be measured as one job.

M & L for vaccumising, dehydrating and carry out pressure test with nitrogen gas including ensuring that there is no leakage in the system complete for the above package units all as directed by Engr-in-charge for AC Plant at Hangar.

Supply of R - 22 a Refrigerent gas and charging in the AC plant installed at Hangar complete all as specified and directed.Note:- The gas shall be procured from original manufacures or auth manufactures stockist/distributor/dealer only and GST voucher etc shall be submitted to Deptt.

Material & Labour for dismantling of hermatically sealed compressor of model No. ZR 57KC - TFD - 522, make - Copeland suitable for 4.40 TR plant and supply,fixing testing and commissioning of suitable rating ,model as per site requirment in all respects complete all as specified and directed by Engineer-in-charge. Note:-The Compressor shall be procured from original manufacures or auth manufactures stockist/distributor/dealer only and Manufactures warranty certificate duly mentioned compressor make sl No ,model and GST voucher details etc shall be submitted to Deptt along with GST vouchers etc.

Material & Labour for dismantling of fan in the outdoor unit of capacity 8.75TR AC Plant at Hangar and provn of new Fan, Single phase,400 watts of existing capacity all as specified and directed.

Material and labour for removing the blower motor of capacity 2 HP installed at Hangar for rewinding with same guage, weight and same number of turns of super annealed copper wire including paper /tape of approved quality and varnishing with Class I varnishing compound including heating and re-assembling the motor, testing and commissioning after repair including replacement of worn out bearing ,shaft complete all as specified.

Material & Labour for in replacement of micro processor board [PCB] same as per exising in 8.75 TR package AC plant at Hangar including testing complete all as directed by Engineer-in-charge.

Taking out the burnt out/unserviceable three phase 440 volts 32 Amps contactor from LT control panel, and supply and fixing the same capacity as per site requirement.

Material and labour for general servicing of 8.75 TR, Package type AC Plant Qty-03 sets of Bluestar make at Signal section including carry out the following works: (a) Cleaning of return air filters. (b) Checking of blower fan belts alignment and serviceability.(c) servicing of electrical contral panel board and its wiring of the plant.(d) Cleaning of drain lines.(e) Checking of leakage of gas.(f) Checking of pressure. Note:- 1) The above checks shall be carried out once in every two months and the same shall be measured as one job. 2) If any refrigerent gas is required , the same shall be measured and paid separatelly as supply only against item No-20 here in after.

Cleaning of indoor and outdoor Condenser coil / Evaporator coil as per manufacturers standard practice complete all as specified and directed. Note:- The above checks shall be carried out once in every four months and the same shall be measured as one job.

M & L for vaccumising, dehydrating and carried out pressure test with nitrogen gas including ensuring that there is no leakage in the system complete for the above package units all as directed by Engr-in-charge.

M & L for dismantling of exsisting make & model hermatically sealed compressor suitable for 4.40 TR plant and supply,fixing testing and commissioning of suitable rating ,model as per site requirment in all respects complete all as specified and directed by Engineer-in-charge. Note:-The Compressor shall be procured from original manufacures or auth manufactures stockist/distributor/dealer only and Manufactures warranty certificate duly mentioned compresser make sl No ,model and GST voucher details etc shall be submitted to Deptt along with GST vouchers etc.

Material andLabour for dismantling of fan in the outdoor unit of capacity 8.75TR AC Plant, and Supply and fixing of new Fan, Single phase,230 volts,400 watts of existing capacity as per site requirement all as specified and directed.

Material and labour for removing the blower motor of capacity 2 HP installed at signal sec for rewinding with same guage, weight and same number of turns of super annealed copper wire including paper /tape of approved quality and varnishing with Class I varnishing compound including heating and re-assembling the motor, testing and commissioning after repair including replacement of worn out bearing complete all as specifiedand directed.

Material and labour for in replacement of micro processor board [PCB] same as per existing in 8.75 TR package AC plant including testing complete all as specified and directed .

Material and labour for general servicing of 22 TR, Package type AC Plant Qty-02 Nos and 11TR Package type AC plant -02 Nos Make Blue star at RoopavaniT-440 including carry out the following works: (a) Cleaning of return air filters. (b) Checking of blower fan belts alignment and serviceability.(c) servicing of electrical contral panel board and its wiring of the plant.(d) Cleaning of drain lines.(e) Checking of leakage of gas.(f) Checking of pressure. Note:- 1) The above checks shall be carry out once in every two months and the same shall be measured as one job. 2) If any refrigerent gas required the same shall be measured and paid separatelly as supply only against item No-20 here in after.

Cleaning of indoor and outdoor Condenser coil / Evaporator coil as per manufacturers standard practice complete all as specified and directed for 22 TR AC Plant. Note:- The above checks shall be carried out once in every four months and the same shall be measured as one job.

M & L for vaccumising, dehydrating and carrying out pressure test with nitrogen gas including ensuring that there is no leakage in the system complete for the above package units all as directed by Engr-in-charge 22 TR AC Plant.

Supply of R - 407C Refrigerent gas and charging in the AC plant installed at Hangar complete all as specified and directed.Note:- The gas shall be procured from original manufacures or auth manufactures stockist/distributor/dealer only and GST voucher etc shall be submitted to Deptt.

Material & Labour for dismantling of fan in the outdoor unit of capacity22 TR -02units and 11 TR-02 units AC Plant, and provn of new Fan, Single phase,400 watts of existing capacity all as specified and directed.

Material and labour for removing the blower motor of capacitynot less than 3 HP installed at Roopavani for rewinding with same guage, weight and same number of turns of super annealed copper wire including paper /tape of approved quality and varnishing with Class I varnishing compound including heating and re-assembling the motor, testing and commissioning after repair including replacement of worn out bearing complete all as specified.

Material and labourfor in replacement of micro processor board [PCB] in 22 TR -02 Units and 11 TR - 02 Units package AC plant including testing complete all as specified and directed .

Material and labour for Descaling of condensor unit of capacity 35 TR by circulating dilute hydrochloric acid solution and cleaning the tubes with wire brush by removing the side cover till the tubes are thoroughly cleaned and re-circulating the fresh water after fixing the side cover including replacement of gasket set complete all as specified and directed by Engr-in-charge.

Material and labour for Dismantling the cooling tower of capacity 70 TR central AC plant installed at FMS bldg and draining out complete water, cleaning honey comb fins by canstic soda and wire brush including cleaning the cooling tower tank and removed all algae from the basin, removing sediments from the all around cooling tower and GI pipes complete with replacement of 50mm float valve complete all as specified and directed by Engr-In-charge. Note: The time between first and second cleaning shall be six month minimum.

Material and labour for Painting of mono block pump set with motor and blower motor cooling tower motor of any capacity with two coats of red oxide and one coat of existing colour of synthetic enamel paint after cleaning and scrubbing complete with base and supports etc., all as specified and directed.

Material and labour for vaccumising the plant by using vaccum pump up to (-) 30 PSIG pressure and hold the same under vaccum pressure upto 24 hours including necessary welding and bracing if required complete all as specified and directed for 35 TR AC plant.

Material and labourfor leak testing the plant by using nitrogen Gas up to 300 PSIG pressure and hold the same under high pressure upto 24 hours including necessary welding and bracing if required complete all as specified and directed for 35 TR AC plant.

Material and labour for charging/topping up the refrigerant gas R-134A into the system ,testing complete in FMS central AC plant all as specified and as directed.

Material and labour for Dismantling and overhauling of Air handling unit of capacity 70 TR central AC plant installed at FMS and assembling , testing for following parts. (a) Inspect absolute filters , removed and clean by used vaccum cleaner and refix the same. (b) Clean cooling coil, applying grease for all motors, check and adjust belt tension if required, check condition of blower shaft, scroll, impeller and bearings, check tightness of all electrical terminations, clean water line strainers, check proper balancing system, check for noise and vibration. (c) Check healthy operation of controls and safety devices. (d) Air filters: Removal and fixing after cleaning by Air Blower and water.Note: The above checks shall be carried out once in every three months and the same shall be measured as one job.

Supply & Installation of Fresh Air Damper hand operated of size 2500 mm x 400mm) as per exsisting GI sheet complete all as specified and directed by Engr -in-charge

Supply & Installation of return Air Damper hand operated of size 1200 mm x 1200mm) as per exsisting GI sheet complete all as specified and directed by Engr -in-charge

Taking down exsisting glass wool insulation and M & L of 13mm Thick Thermal Insulation - Closed Cell Elastomeric Foam Nitrile Rubber Insulation With Class - O , Installation With Synthetic Rubber Adhesive to be Apply on the Surface of the Duct Inside and Fix these Insulation as per the Given Dimensions , Density 50 KG/M3.

Material and labour for dismantling Monoblock pump set 10 /5 HP model UP50/30 removing scales cleaning, heating varnishing of motor winding, servicing the pump sets by repalcing the worn out bushes, bearings, gland rope, gland mounting assly,Gun metal Impeller, bolts & nuts, etc reassembling the complete pump set including testing and commissioning complete all as directed by Engineer - in - Charge.

M & L for dismantling burnt out three phase, 50 C/S capacity 10 / 5 HP motor for rewinding with same guage, weight and same number of turns of super annealed copper wire including paper /tape of approved quality and varnishing with Class I varnishing compound including heating and re-assembling the motor, testing and commissioning after repair including replacement of worn out bearing complete all as specified.

Material and labour for dismantling burnt out three phase, 50 C/S capacity 60 Hp/45 KW compressor motor for rewinding with same guage, weight and same number of turns of super annealed copper wire including paper /tape of approved quality and varnishing with Class I varnishing compound including heating and re-assembling the motor, testing and commissioning after repair including replacement of worn out bearing complete all as specified.

Material and labour for dismantling of compressor including taking down unserviceable parts and refixing new parts whererever necessary complete all as directed by AGE after the pumping down the complete system and collecting the refrigerant into condener, compressor oil into clean container & disconnecting the compressor from suction & discharge side and including leak testing of compressor after reassembling the parts, recharging/filling retrived oil & gas, replacement of belt if required and testing upto satisfactory cooling performance complete all as specified and directed. Note:-1) Spareparts,refrigerent gas and compressor oil for top up if required shall be measured and paid for supply only in respect item of this schedule for 35TR.2) metal filling,grinding,polishingspring,washer,quarter,and consumable items such as grease, cottonwasteetc,are deemed to be included in the quoted rate.

Supply only metal coupling along with rubber coupling of size L-100 complete suitable for 5 Hp pump.

Supply only metal coupling along with rubber coupling of size L-110 complete suitable for 10 Hp pump.

Supply only 'V' belt SPB 3350/B-92/B-76 complete all as specified and directed. Make;Fenner

Supply only of water pressure switch as per existing all as specified and directed by Engr-In-charge.

Material and labour of Removing / replacement of new high pressure cut off switch for gas line complete all as specified and directed.

Material and labour for Replacement of filter for drier unit of 35 TR complete all as specified and directed. Make ALCO D-48

Supply and fixing in replacement PCB control board intellisys complete all as specified and directed. Make: -soft hard suitable for 70 TR central AC plant

Material and labour in replacement of contactor of model MNX 18 complete all as specified and directed

Material and labour in replacement of contactor of model MNX 12 complete all as specified and directed.

Material and labour in replacement of contactor of model MNX 09 complete all as specified and directed.

Material and labourin replacement of contactor of model MNX 25 complete all as specified and directed

Material and labour for Replacement of PVC honey comb fins as per existing size at FMS AC plant complete all as specified and directed

Material and labour for Drain out old compressor oil from the compressor and cleaning compressor unit refilling and supply only new compressor oil top up of required for compressor unit in and including cleaning unit suitable for reciprocating type compressor of 35 TR capacity 03 No's Make: Zed plus Model: Reefrigeration oil-68 complete all as specified and directed Note:- The compressor oil shall be procured from original manufactures or auth manufactures stokiest /distributor/dealer only and GST voucher etc shall be submitted to Deptt.

Material and labour in replacement of star delta starter as per site requirement suitable for 3 ph motor of capacity 5 HP complete all as specified and as directed.

Material and labour in replacement of star Delta starter as per site requirement suitable for 3 ph motor of capacity 10 HP complete all as specified and as directed.

Supply and fix in replacement of single phasing preventer (Make Minilac model VSPI 3 ph 415 volts or equivalent all as specified and directed by Engr-in-charge.

Material and labour in replacement of butterfly valve of size100 mm complete all as specified and directed.

Material and labour in replacement of butterfly valve of size 50 mm complete all as specified and directed.

Material and labour in replacement of gate valve of size 25 mm complete all as specified and directed.

Material and labourfor replacement of AHU of central AC plant pre air filters, dry type, washable, rated air flow capacity 17750 CFM 90%efficiency, down to particle 10 micron max operating temp of -50 deg C frame made of aluminium box type synthetic woven fabric with non woven polyester and one layer of aluminiuam expanded metal as reinforcement throughout the length of the media with PU sealant of following sizes Make: Airtech/Spectrum. (a) Filter Sizes 500 x 500 x50 mm : capacity 900 CFM @4 mmwc

All as per item No 57 but Filter Sizes 600 x 400 x50 mm : capacity 900 CFM @4 mmwc

All as per item No 57 but Filter Sizes 500 x 400 x50 mm : capacity 900 CFM @4 mmwc

Material and labour for replacement of AHU of central AC plant fine air filters, dry type, washable, rated air flow capacity 17750 CFM 95%efficiency, down to particle 3 micron max operating temp of -50 deg C frame made of aluminium flange type two layers of synthetic woven fabric with10mm G3 media and one layer synthetic woven fabric aluminiuam tubes regidly fitted to the casing using with PPCP studs with PU sealant of following sizes: Make: Airtech/Spectrum. (i) Filter Sizes 530 x 430 x150 mm: capacity 1000 CFM @7 mmwc

All as per item No 60 but Filter Sizes 430 x 430 x 150 mm: capacity 850 CFM @7 mmwc

All as per item No 60 but Filter Sizes 430 x 330 x 150 mm: capacity 650 CFM @7 mmwc

Material and labourfor replacement of AHU of central AC plant deep pleat Hepa air filters,(Normal Flow type) dry type, washable, rated air flow capacity 17750 CFM 99.97%, down to particle 0.3 micron max operating temp of -50 deg C frame made of aluminium flange type micro glass fiber media with PU sealant of following sizes: Make: Airtech/Spectrum. (i) Filter Sizes 430 x 430 x 305 mm : capacity 700 CFM @18 mmwc

All as per item No 63 but Filter Sizes 520 x 420 x 305 mm:capacity 1000 CFM @18 mmwc

All as per item No 63 but Filter Sizes 425 x 425 x 305 mm: capacity 650 CFM @18 mmwc

All as per item No 63 but Filter Sizes 420 x 320 x 305 mm: capacity 500 CFM @18 mmwc

Material and labour for Dismantling the central AC plant AHU fan motor / cooling tower fan motor of any make of capacity 20/12.5HP capacity servicing by over hauling, cleaning, greasing, lubricating, reassembling, painting the angle base and testing including replacing the following items all as specified and directed. (b) Ball bearing set Make : SKF (c) Bearing sleeve (d) Terminal connector any size any capacity (e) M.S. metal shaft (f) Gasket any size any capacity (g) MS bolts, nut and washer any sizes suitable flange any size any capacity, foundation bolt, nut

Material and labour for painting of central type AC plant 35 TR complete with Chiller Unit compressor unit outer side colour two coating of existing synthetic enamel paint after cleaning and scrubbing complete and writting of MES NO all as spcified and directed by Engr-In-charge

M & L for Painting of condensor pipe line inlet and outlet( length upto cooling tower basin ) and chiller pump pipe line inlet and outlet(length up to plant room wall) of any size , one coat of red oxide primer and two coating of existing colour of synthetic enamel paint after cleaning and scrubbing including marking and numbering complete all as specified and directed .

Material and labour in Replacement of water pressure gauges with adoptor (circular type) 100 mm dia with brass adoptor 15 mm 0-200 Kg/CM2 inlet only complete all as specified and directed.

Material and labour in Replacement of temperature gauge circular type 100 mm dia with brass adoptor 15 mm inlet only with temp range 0 to 50 degree centigrade complete all as specified and directed.

Supply and fixing in replacement of MCCB 63- 100 AMPS , 16 KA , 415V complete all as specified and directed.

Supply and fixing in replacement of MCCB 160 AMPS , 36 KA , 415V complete all as specified and directed.

Supply and fixing in replacement of MCCB 200 AMPS , 36 KA , 415V complete all as specified and directed.

Supply and fixing in replacement of LED indicator lamp (Red/Yello/Blue) complete all as specified and directed.

Material and labour for PCC 1:4:8, type D-2, (using 40 mm graded stone aggregate) for foundation, filling and mass concrete complete all as specified and directed.

Disconnect ,taking down existing Condenser/Chilled water pump with motor and worn out CI base frame structure at FMS AC plant. M&L for fabrication of new CI Base Frame with two coat of red oxide primer with single coat of enemelled paint as per existing dimention, size of CI material including. gounting fully threared nuts and bolts all as requied at site.Re- installation existing pump with motor , erection with proper alignment and testing all as specified and directed by Engr-in-charge. Note: Grounting on foundation with new nut and bots by providing new pcc work shall be measured and paid relevant schedule of item. Note for central AC plant and Package AC plant :- 1) The Contractor is responsible to carry out general servicing, other repairs and charging gas etc by AC plant original manufactures Engineers/technicians or their authorized distributor/dealer/channel partner Engineers/technicians only.2. All BOQ items No 1to77 as applicable shall be purchased from original manufactures/authorized distributor/dealer and GST purchase vouchers along with manufactures warranty cert duly defaced/signed by contractor,JE and Engineer-in-charge shall be submitted to deptt during payment claims for verification, scrutiny,passing of bill and future record purpose.

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