REPAIR AND MAINTENANCE OF CENTRAL AC PLANT AT FMS AND PACKAGE TYPE AC PLANT AT KIRAN DSS, SIGNAL SECTION AND ROOPAVANI AUDITORIUM AT AF STN 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 Hanger including carried out the following works: (a) Cleaning of return air filters (b) Checking of blower fan belt's alignment and serviceablity (c) Servicing of electrical control panel board and its wiring of the plant (d) Cleaning of drain lines (e) Checking of leakage of Gas (f) Checking of pressure Note:- The above checks shall be caried out every two months.

Cleaning of indoor and outdoor Condenser coil / Evoprator coil as per manufacturers standard practice complete all as specified and directed. Note:- The above checks shall be caried out once in four months

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.

Supply of R - 22 Refrigerent gas and charging in the AC plant installed at Hanger & CPT Bldg complete all as specified and directed.

M & L for dismantling of hermatically sealed compressor of model No. ZR 57KC - TFD - 522, make - Copeland suitable for 4.40 TR plant and provn of new compresser of same make and model in the unit complete all as specified and directed. Note:- The compressor shall be procured from original manufacture or auth manufactures stockist/distributor/delar only and manufacture warranty certificate duly mentioned compressor make sl no, model and GST voucher details etc shall be submitted to Dept along with GST vouhers etc.

M & L for dismantling of fan in the outdoor unit of capacity 8.75TR AC Plant, and provn of new Fan, Single phase,400 watts of existing capacity all as specified and directed. Make-Hindustan.

Material and labour for removing the blower motor of capacity 2 HP installed at Hanger 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.

M & L for in replacement of micro processor board [PCB] in 8.75 TR package AC plant at Hanger including testing all as directed .

Taking out the burnt out/unserviceable three phase 440 volts 32 Amps contactor from LT control panel, and supply and fixing the same capacity and Model of the contactor. Model ML-3 of Make L&T/Simens/BCH.

Material and labour for general servicing of 8.75 TR, Package type AC Plant Qty-03 sets of Blue Star make at Signal section including carried out the following works: (a) Cleaning of return air filters (b) Checking of blower fan belt's alignment and serviceablity (c) Servicing of electrical control panel board and its wiring of the plant (d) Cleaning of drain lines (e) Checking of leakage of Gas (f) Checking of pressure Note:- The above checks shall be caried out every two months.

Cleaning of indoor and outdoor Condenser coil / Evoprator coil as per manufacturers standard practice complete all as specified and directed. Note:- The above checks shall be caried out once in four months

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.

M & L for dismantling of fan in the outdoor unit of capacity 8.75TR AC Plant, and provn of new Fan, Single phase,400 watts of existing capacity all as specified and directed. Make-Hindustan.

Material and labour for removing the blower motor of capacity 2 HP installed at Hanger 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.

M & L for in replacement of micro processor board [PCB] in 8.75 TR package AC plant at Signal Sec including testing all as directed .

Material and labour for general servicing of 22TR, Package type AC Plant Qty-2 Nos and 11 TR Package Type AC Plant-02 Nos Make:-BLUE STAR at Roopavani T-440 including carried out the following works:- a) Cleaning of return air filters b) Checking of blower fan belt's alignment and serviceablity c) Servicing of electrical control panel board and its wiring of the plant d) Cleaning of drain lines e) Checking of leakage of Gas f) Checking of pressure Note:- The above checks shall be caried out every two months.

Cleaning of indoor and outdoor Condenser coil / Evoprator coil as per manufacturers standard practice complete all as specified and directed. Note:- The above checks shall be caried out once in four months

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.

Supply of R - 407C Refrigerent gas and charging in the AC plant installed at Signal Sec and Roopvani complete all as specified and directed.

M & L for dismantling of fan in the outdoor unit of capacity 22 TR -02 Units and 11 TR - 02 Units AC Plant, and provn of new Fan, Single phase,230volts of existing capacity all as specified and directed. Make-Hindustan.

Material and labour for removing the blower motor of capacity 3/5 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.

M & L for in replacement of micro processor board [PCB] in 22 TR -02 Units and 11 TR - 02 Units package AC plant including testing all as directed .

Material and labour for general servicing of 17 TR, Air Cooled Package type AC Plant Qty-3 Nos Make:-Carrier at CPT Bldg including carried out the following works:- (a) Cleaning of return air filters (b) Checking of blower fan belt's alignment and serviceablity (c) Servicing of electrical control panel board and its wiring of the plant (d) Cleaning of drain lines (e) Checking of leakage of Gas (f) Checking of pressure Note:- The above checks shall be caried out every two months.

Cleaning of indoor and outdoor Condenser coil / Evoprator coil as per manufacturers standard practice complete all as specified and directed. Note:- The above checks shall be caried out once in four months

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 Air Cooled package units at CPT Bldg all as directed by Engr-in-charge.

M & L for dismantling of fan in the outdoor unit of capacity 17 TR - 03 Units AC Plant, and provn of new fan, Single phase,230volts of existing capacity all as specified and directed.

Material and labour for removing the blower motor of capacity 3/5 HP installed at CPT Bldg 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.

M & L for in replacement of micro processor board [PCB] in 17 TR -03 Units package AC plant including testing all as directed .

M & L 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.

M & L 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 castic 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.

M & L 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.

M&L 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.

M&L for 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.

M & L 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.

M & L 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: Cleanig and checks shall be carried out every 03 months.

M&L 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.

M & L 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.

M & L 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: (i) spare parts , refrigerent (gas) & compressor oil for top up if required shall be measured and paid for seperately as supply only in respective item of this schedule. (ii) Metal filling , grinding, polishing spring, washer, quarter, and consumable items such as grease cotton waste etc., are deemed to be included in the quoted rate. 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.

S & F metal coupling along with rubber coupling of size L-100 complete suitable for 5 Hp pump.

S & F metal coupling along with rubber coupling of size L-110 complete suitable for 10 Hp pump.

S & F 'V' belt SPB 3350/B-92/B-76 Make;Fenner

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

M&L Removing / replacement of new high pressure cut off switch for gas line (Make : Donfoss or other equivalent)

M & L for Replacement of filter for drier unit of 35 TR Make ALCO D-48

S & F in replacement PCB control board intellisys make: softhard suitable for 70 TR central AC plant

M & L in replacement of contactor of model MNX 18 complete with NO

M & L in replacement of contactor of model MNX 12 complete with NO

M & L in replacement of contactor of model MNX 09 complete with NO

M & L in replacement of contactor of model MNX 25 complete with NO

M & L for Replacement of PVC honey comb fins as per existing size at FMS AC plant

M & L for Drain out old compressor oil from the compressor and cleaning compressor unit refilling new compressor oil as required level oil type Poly oil-Mobil suitable for reciprocating type compressor of 35 TR capacity 03 No's Make: Zed plus Model: Reefrigeration oil-68 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.

M & L in replacement of star delta starter suitable for 3 ph motor of capacity 5 HP complete all as specified and as directed.

M & L in replacement of star delta starter 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 all as specified and directed by Engr-in-charge.

M & L in replacement of butterfly valve of size100 mm complete all as specified and directed.

M & L in replacement of butterfly valve of size 50 mm complete all as specified and directed.

M & L in replacement of gate valve of size 25 mm complete all as specified and directed.

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 MAKE - Supreme Insuflex , Armasound, A-Flex,K-FLEX OR other equivalent make approved by GE

M&L for 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

(b) Filter Sizes 600 x 400 x50 mm : capacity 900 CFM @4 mmwc

(c) Filter Sizes 500 x 400 x50 mm : capacity 900 CFM @4 mmwc

M&L 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. (a) Filter Sizes 530 x 430 x150 mm: capacity 1000 CFM @7 mmwc

(b) Filter Sizes 430 x 430 x 150 mm: capacity 850 CFM @7 mmwc

(c) Filter Sizes 430 x 330 x 150 mm: capacity 650 CFM @7 mmwc

M&L for 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. (a) Filter Sizes 430 x 430 x 305 mm : capacity 700 CFM @18 mmwc

(b) Filter Sizes 520 x 420 x 305 mm:capacity 1000 CFM @18 mmwc

(c) Filter Sizes 425 x 425 x 305 mm: capacity 650 CFM @18 mmwc

(d) Filter Sizes 420 x 320 x 305 mm: capacity 500 CFM @18 mmwc

M & L 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. (a) Ball bearing set Make : SKF (b) Bearing sleeve (c) Terminal connector any size any capacity (d) M.S. Metal shaft (e) Gasket any size any capacity (f) MS bolts, nut and washer any sizes suitable flange any size any capacity, foundation bolt, nut

M&L 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.Make Asian paint

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 .Make Asian paint

M & L in Replacement of water pressure gauges with adoptor (circular type) 100 mm dia with brass adoptor 15 mm 0-200 Kg/CM2 inlet only make Scientific.

M & L 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 Make scientific.

S & F in replacement of MCCB 63- 100 AMPS , 16 KA , 415V

S & F in replacement of MCCB 160 AMPS , 36 KA , 415V

S & F in replacement of MCCB 200 AMPS , 36 KA , 415V

S & F in replacement of LED indicator lamp (Red/Yello/Blue)

M&L for PCC 1:4:8, type D-2, (using 40 mm graded stone aggregate) for foundation, filling and mass concrete all as specified and as 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:- Gounting 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 plnt original manufactures Engineers/technicians only. (2) All BOQ items No 1 to 82 as applicable shall be purchased from original manufactures/authorized distributor/delar and GST purchase vouchers along with manufacutres warrenty 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 purchase.

RK ENTERPRISES