REPAIR AND ANNUAL MAINTENANCE OF AC PLANTS OF STORAGE SHEDS AT AFS AMLA

Amount

Material & labour for opening of shell and tube of water cooled Chiller cum condenser unit of central AC Plant from both sides including dismantling the water lines for inlet and outlet of chiller unit of AC plant. Removing scale/sludge precipitated in copper tube by push and pull method with iron rod connected with steel wire brush of suitable size depending upon the condendser tube size to the entire length of condenser cum chiller unit and scrapping down the sludge precipitated inside the tube, closing both side of condenser and circulating the de-scaling solution (HCl or suitable cleaning agent) in all tubes of condenser of each plant through the circulating pump and allow holding it for 30 mins for chemical reaction.

Opening the condenser from both sides and clean with iron rod connected with nylon brush of suitable size as per condenser copper tube size to the entire length of condenser to ensure that descaling process has been complete then closing the condenser at both ends and circulating clean water in all tube of condenser of each plant and drain out and fixing new rubber gasket for both ends of condenser of plant tighten with new nuts, bolts complete all as specified and directed for the following capacity:- Note: (i) The process of de-scaling/ cleaning of tubes shall be to the satisfaction of Engineer-in-Charge. (ii) The job for descaling shall be done once in four months. (iii) Cost of cleaning agent and brush shall deemed to be included in the quoted rate.

AC Plant Capacity 3 x 35 TR Shed No. 22

AC Plant Capacity 3 x 12 TR Shed No. 54

AC Plant Capacity 3 x 15 TR Shed No. 12 & 13

Material & labour for maintenance services of 8.5 TR outdoor type ductable air cooled unit of make as installed at site in Shed No. 4, 5, 6, 21, 57 & 84 by carrying out following checks and services:- (a) Cleaning of condenser coils fins with mild detergent/chemical solution for descaling of coils and flushing with high pressure jet of water in presence of JE/Engineer-in-Charge. (b) Greasing of blower motors and all moving parts. (c) Checking firmness of supporting arrangement for the compressor, blower motor, air conditioners casing and fixing etc., anti-rusting painting of the MS portion prone to rusting. Note: (i) Cleaning, overhauling and servicing of each unit shall be carried out on quaterly basis. (ii) The AC units shall be checked completely and serviced/ repaired thoroughly at least once in three months as per the manufacturer's instructions. (iii) Items/parts required for repair/ replacement shall be measured and paid separately under relevent items here-in-after as supply only/ supply & fixing as applicable.

Material and labour for overhauling of compressor of capacity 15 TR of make as installed at site complete all as per manufacturer's instruction for improved performance and design parameter including following works complete all as specified and directed :- (i) Replacement of crankshaft of suitable size including dismantling transporting to authorised approved workshop and back including refixing after repair and testing. (ii) Complete dismantling of each part of compressors cleaning each part of compressor carrying out preventive work like oiling, greasing, replacing defective parts reassembling compressor complete with vacuum test and pressure test at specified pressure to detect leak and again same tests after leak repair to ensure leakage in complete system. Note : (i) Spare parts shall be measured & paid seperately under relevent items as supply only/ supply & fixing as applicable. (ii) Any minor parts not mentioned below but required for successful operation of compressor shall deemed to be included in the quoted rate.

Supply only bushing with collar suitable for 15 TR capacity compressor complete.

Supply only connecting rod assembly suitable for 15 TR capacity compressor complete.

Supply only shaft seal assembly suitable for 15 TR capacity compressor complete.

Supply only piston rings suitable for 15 TR capacity compressor complete.

Supply only set of neoprene 'O' ring suitable for 15 TR capacity compressor complete.

Supply only suction stop valve assembly suitable for 15 TR capacity compressor complete.

Supply only discharge stop valve assembly suitable for 15 TR capacity compressor complete.

Labour charges for attending break down complaints of Central AC plant water/air cooled capacity 36 to 105 TR by specialized mechanic only for fault finding including attending repairs as and when required such as No start condition of AC plant and repairing, starting the AC plant till smooth running and setting up the alignment/required parameters of all major parts such as non starting of compressor, compressor panel, main LT panel, gas charge, cooling tower, power contactor, starter, MCCBs, Micro processor based control panel, pumps etc as required on ground or as ordered by Engineer-in-Charge complete all as specified and directed. Note: (i) Contractor shall depute his team immediately on intimation for rectification of defects. If, contractor fail to send his team for rectification action, a penalty of Rs.1000/- per day for delay beyond 72 hrs of intimation by Engneer-in-Charge shall be imposed subject to a maximum of 1 % of contract value. (ii) Cost of necessary parts/items required for rectification/ repair action shall deemed to be included in the rate quoted, if not included in this schedule.

Material & labour for taking down induction motors of following capacity from Central AC Plant after disconnecting incoming electric connection, removing and transporting to work shop and taken back for re-installation in existing location after repairs/ rewinding. Strip opening of induction motor and taking old burnt out copper winding, insulation material, cleaning the slots and rewinding of motor by providing high quality of class 'B' paper insulation inside the slots, rewinding with super enameled copper wire of existing size and gauge, rapping up with high quality cotton tape and varnishing with super quality oil including drying upto desired temperature and desired time including replacement of bakelite terminal testing on completion complete all as specified and directed for the following capacity :-

Induction motor 2 to 3 HP

Induction motor 5 HP

Induction motor 10 HP

Material and labour for vacuuming the refrigeration system of central AC plant capacity 36 to 105 TR by using vaccum pump upto (-) 30 PSI pressure and hold the same under vaccum pressure upto 24 hours for leak testing including charging nitrogen gas in AC plant by maintaining pressure 350 PSI for checking of gas leakage and removing water vapour choked in line and flushing out the complete system including gas leakage and detection with halide torch/ soap foam solution in system including gas welding flushing and bracing for making the refrigerant pipe line good to make the system leak proof complete all as specified and as directed for following capacities:- Note: (i) Nitrogen gas, welding and bracing shall deemed to be included in the rat quoted. (ii) Refrigerant gas shall be measured and paid separately under relevent item of schedule as supply only.

Capacity 3 x 35 TR

Capacity 6 x 8.5 TR

Capacity 5 x 8.5 TR

Capacity 3 x 15 TR

Capacity 3 x 12 TR

Supply and fixing in replacement copper condenser fan motor suitable for 8.5 TR outdoor unit of ductable type AC as per existing make/ model complete all as specified and directed.

Supply & fixing liquid line filter drier as per existing make, model and suitable for existing refrigerant line for 11/12 TR capacity compressor of AC plant including taking out old unserviceable complete all as specified and directed.

All as per item No. 15 here-in before but for compressor 8.5 TR capacity complete.

Supply and fixing in repair refrigeration pressure switch/LP-HP cut out, adjustable type including necessary accessories complete all as specified and directed.

Supply & fixing in repair differential oil pressure switch, weather proof adjustable type including necessary accessories complete all as specified and directed.

Supply & fixing in repair condenser brass safety valve 0 to 350 PSI (sealed) of existing size & type with necesssary accessories including evacuation of refrigeration gas and recharging of taken out gas complete all as specified and directed. Make: Castel/Henry/Brassomatic

Supply and filling new compressor oil polyster lubricant grade 160-SZ suitable for Scroll type compressor water/air cooled for topup the low level of oil complete all as specified and directed.

Supply and fixing in repair copper heating element threaded/flanged type capacity 3 KW ISI marked as per existing size/type including rubber gasket in hot water generator of central AC plant complete all as specified and directed. Make : ISI marked make to be approved by GE.

All as per item No. 21 here-in-before but for capacity 6 KW complete.

Supply only dry & wet bulb thermometer (analog type), mercury filled, with 2 cotton wicks and hygrometric table chart complete all as specified and directed.

Supply only dry & wet bulb thermometer (digital type) with hygrometric table chart complete all as specified and directed.

Supply only refrigerant gas R-407C in returnable cylinders. Note: The refrigerant gas shall meet the specfications and guidelines of relevant Indian/ International standards.

Material and labour for taking out fins & nozzles of cooling tower of capacity up to 100 TR central AC plant and draining out complete water, cleaning honeycomb fins by castic soda and wire brush including cleaning the cooling tower tank and removed all algae/sludge from the basin, removing sediments from all around the cooling tower, pipes, cleaning/brushing of nozzles including replacement of float valve of suitable size and re-installing of new/old fines & nozzles in existing place complete all as specified and directed. Note: (i) Cleaning shall be carried out on quaterly basis. (ii) New honeycomb fins and nozzles shall be measured and paid separately under relevent item of schedule as supply only however cost of float valve shall deemed to be included in the rate quoted.

Supply only honeycomb type cooling tower fins suitable for induced draft counter flow type cooling towers of size (LxWxH) : 2 Ft x 0.5 Ft x 1 Ft (Approx.), Flute Height / Size : 12.5 mm (Approx.) Standard Fill Sheet (Material) Thickness : 0.3 mm, Material: PVC Fills, complete all as specified and directed.

Supply only spray nozzles of cooling tower as per existing size/type/material complete all as specified and directed.

Supply and fixing in repair gun metal globe/gate valves, with iron wheel head, screwed both ends for iron pipe 25 mm dia complete all as specified and directed.

Supply and fixing in repair gun metal globe/gate valves, with iron wheel head, screwed both ends for iron pipe 32 mm dia complete all as specified and directed.

Supply and fixing in repair butter fly valves of size 40 mm dia complete with all fittings and fixtures such as washer, rubber gasket complete all as specified and directed.

Supply and fixing in repair butter fly valves of size 65 mm dia complete with all fittings and fixtures such as washer, rubber gasket complete all as specified and directed.

Supply and fixing in replacement of condenser pump capacity 5 HP, 3 phase, 50 Hz, as per existing model/type including taking down of old unserviceable pump complete all as specified and directed. Make: Kirloskar/ CG/ KSB

Supply and fixing in replacement monoblock pumps capacity 2 HP, 3 phase, 50 Hz as per existing model/type including taking down of old unserviceable pump from hot water generator complete all as specified and directed. Make: Kirloskar/ CG / KSB/Beacon/CRI Pumps/ Wilo Mather Platt/ Jyoti/ V Guard

Supply and fixing in replacement chiller monoblock pumps capacity 3 HP, 3 phase, 50 Hz as per existing model/type including taking down of old unserviceable pump complete all as specified and directed. Make: Kirloskar/ CG / KSB/Beacon/CRI Pumps/ Wilo Mather Platt/ Jyoti/ V Guard

Supply, installation and testing of water cooled hermatically sealed scroll compressor of capacity 11/12 TR, 3 phase, UL electrical ratings 460 V3 - 60 Hz and 380-400 V3 - 50 Hz with thermally protected system with mounting kit with grommets, bolts, nuts, sleeves and washers including taking down old unserviceable compressor complete all as specified and directed. Make: Danfoss Model No. SZ110S4VC/ Copeland or equivalent.

Supply, installation and testing of air cooled hermatically sealed scroll compressor of capacity 8.5 TR, 3 phase, UL electrical ratings 460 V3 - 60 Hz and 380-400 V3 - 50 Hz with thermally protected system with mounting kit with grommets, bolts, nuts, sleeves and washers including taking down old unserviceable compressor complete all as specified and directed. Make: Danfoss Model No. SM185S4RC/ Copeland Model: ZR10KCE-TFD-522 or equivalent.

Supply and fixing in replacement of refrigerant line copper tubing of size 1 1/8" with clamping on supports with both the ends connection or fixing by brazing complete all as specified and directed.

Supply and fixing in replacement of refrigerant line copper tubing of size 5/8 " with clamping on supports with both the ends connection or fixing by brazing complete all as specified and directed.

Supply and fixing in replacement pilot solenoid coil 3 way as per existing size/type/model complete all as specified and directed.

Supply and fixing in replacement monoblock pump set of capacity 0.75 HP, 560 LPH, 9 mtr head single phase, 240 volts suitable for humidifier system including taking down old unserviceable mono block pump complete all as specified and directed. Make: Kirloskar/ CG / KSB/Beacon/CRI Pumps/ Wilo Mather Platt/ Jyoti/ V Guard

Supply and fixing in repair double sided AHU fan belt as per existing size/type/thickness as per sample complete all as specified and directed.

Supply and fixing in repair air filter for AHU unit, box type in light weight metallic frame 50 mm thickness, capable of filtering particles of size 5 micron or less complete all as specified and directed.

Supply and fixing in repair expansion brass valve as per existing size/type/model suitable for 11/12 TR capacity compressor including neccessary cutting, brazing and testing complete all as specified and directed.

Supply and fixing in repair expansion brass valve as per existing size/type/model suitable for 15 TR capacity compressor including neccessary cutting, brazing and testing complete all as specified and directed.

Supply and fixing in repair expansion brass valve as per existing size/type/model suitable for 8.5 TR capacity compressor including neccessary cutting, brazing and testing complete all as specified and directed.

Material and labour for disconnecting, dismantling and removing of central shaft of AHU of central AC plants of any capacity/make for transporting to the work shop for repairs of shaft by re-metalling, turning, brazing and polishing work. Cleaning, greasing and overhauling of shaft by replacement of unserviceable/worn out ball bearing and other minor spares, reassembling after repairs, bringing back to existing location and fixing in original position. Testing and re-commisioning on full load to the entire satisfaction of Engineer-in-Charge. Note: Unit rate quoted by tenderers shall deemed to be included for cost of nuts, bolts, washers, lugs, thimbles, wires and petty items required for efficient and smooth functioning of the equipment without any extra cost to the department.

Supply and fixing in repair 13 mm thick nitrile rubbber insulation Class '0' suitable for 8.5 TR compressor unit having suction and discharge copper tube of size 1 1/8" & 5/8" complete all as specified and directed.

Supply and fixing in repair 16 mm nitrile rubbber insulation Class '0' suitable for upto 35 TR AC plant unit for suction and discharge condensing line of size up to 100 mm dia complete all as specified and as directed.

Supply and fixing in replacement MNX25 type power contactor, 3 pole, 415 V, 50 Hz with auxiliary contact 2 NO+2 NC suitable for non-inductive or slightly inductive, resistive load rating AC-1, 40 Amps complete all as specified and directed.

Supply and fixing in replacement MNX40 type power contactor, 3 pole, 415 V, 50 Hz with auxiliary contact 2 NO+2 NC suitable for non-inductive or slightly inductive, resistive load rating AC-1, 40 Amps complete all as specified and directed.

Supply and fixing in replacement MCCB 125 Amps, 4 pole, 415 Volts, 36 KA, thermal magnetic release with overload setting of 80-100% in existing panel along with all connected accessories complete all as specified and directed

Supply and fixing in replacement MCCB 160 Amps, 4 pole, 415 Volts, 36 KA, thermal magnetic release with overload setting of 80-100% in existing panel along with all connected accessories complete all as specified and directed.

Supply and fixing in replacement MCCB 250 Amps, 4 pole, 415 Volts, 50 KA, thermal magnetic release with overload setting of 80-100% in existing panel along with all connected accessories complete all as specified and directed

Supply and fixing in replacement MCCB 63 Amps, 4 pole, 415 Volts, 16 KA, thermal magnetic release type in existing panel along with all connected accessories complete all as specified and directed

Supply and fixing in replacement chilled water sensor for AC Plants as per existing type/model complete all as specified and directed.

Supply and fixing in replacement of oil pressure gauge 100mm dia, range 0 to 200 PSI complete all as specified or as directed. Make: Fiebig/ Guru/ York

Supply and fixing in replacement water pressure gauges with adoptor (circular type) 100 mm dia with brass adoptor 15 mm, 0-150 Kg/cm2 inlet only complete all as specified and directed.

Supply and fixing in replacement water pressure gauges with adoptor (circular type) 100 mm dia with brass adoptor 15 mm, 0-60 Kg/cm2 inlet only complete all as specified and directed.

Supply and fixing in replacement temperature gauge circular type 100 mm dia with brass adoptor 15 mm inlet only with temp range 0 to 100 ºC complete all as specified and directed.

Supply and fixing in replacement water pressure /switch /cutout, box type as existing size/model complete all as specified and directed.

Supply and fixing in replacement, multi stranded, 16 sqmm, 4 core, PVC insulated and sheathed round/flat cable, 1100 volts, with copper conductor, ISI marked, IS- 694 including connecting to outdoor unit of ductable AC with suitable size copper thimble through PVC conduit complete all as specified and directed.

Supply and fix in repairs cross arms, bracing, clamps and back plates fabricated from structural steel sections including nuts, bolts, washers, welding, bending cold or hot drilling holes for bolts, in any shape or size including two coat of aluminium paint over one coat of red oxide paint complete all as specified and as directed.

Material and labour for repairing the existing LT panel of AC plant by taking proper shutdown for power house and disconnecting and re-connecting cables connection both in coming and outgoing using appropriate size of thimbles, making proper welding, drilling for smooth functioning of panel, replacement of unserviceable parts and necessay nuts, bolts & washers, locking arrangement complete all as specified and directed. Note: (i) The cost of minor spares required including connector, lugs, copper wire/cable, fuses required shall deemed to be included in the quoted rate. (ii) Necessary items/spare parts shall be measured and paid separately as supply & fixing under respective items.

Supply and fixing ON/Off push button existing type/size complete. Make : L&T/Siemens/Legrande/CG/ABB

Supply and fixing LED indicator lamp (RYB), neon type complete. L&T/Siemens/ABB/Schneider/Philips/Havells/wipro/Bajaj

Supply and fixing electronic timer, ST-100 type ranging from 3-30/12-120 secs complete. Make : L&T/Siemens/Schneider

Supply and fixing thermal over load relay, directly operated for relay range 17.5-22 Amps, with connected accessories complete. Make : L&T/Siemens/ABB/Schneider

Supply and fixing thermal over load relay, directly operated for relay range 6-10 Amps, with connected accessories complete. Make : L&T/Siemens/ABB/Schneider

Supply and fixing single phase preventer complete. Make : Minilec/L&T/Siemens/ABB/Schneider

Supply and fixing MCB TPN 'B' curve 63 Amp, 10 KA complete. Make : L&T/ ABB/Legrand/Siemens/Schneider/Havells

Supply and fixing MCB SPN 'B' curve 6 - 32 Amp, 10 KA complete. Make : L&T/ ABB/Legrand/Siemens/Schneider/Havells

Supply and fixing contactor ML-2, 32 Amp AC-3 rating complete. Make : L&T/ ABB/Legrand/Siemens/Schneider/Havells

Supply and fixing add-on block MNX-A1 suitable for existing contactor complete. L&T/ ABB/Legrand/Siemens/Schneider/Havells

Supply and fixing digital type ammeter, 3 phase complete. Make: IMP/ Automatic Electric/L&T/Havells/MECO

Supply and fixing digital type voltmeter, 3 phase complete. Make: IMP/ Automatic Electric/L&T/Havells/MECO

Supply, fixing, testing and commisioning in replacement of exisiting squirrel cage TEFC induction motor copper winding capacity 10 HP, 1455 RPM, 415 Volt 3 phase, 50 Hz as per existing model/frame size for AHU of AC plant including taking down of old unserviceable induction motor and depositing to MES Store complete all as specified and directed. Make: Kirloskar/ABB/CG/Siemens/Bharat Bijlee.

Material and labour for putting/fixing POP/ white cement over iron net and lead wool on hot water tank cover of AC plant along with hot water circulating pipe line in AC plant room in repair of broken plaster and wire mesh/lead wool with neat/good finishing complete all as specified and directed .

Supply and fixing in replacement rotational moulded polyethylene water storage tanks double layer of capacity 5000 ltr (cylindrical vertical with closed top) hoisted and fixed in position for storage of water of AC Plant and dismantling the old one by opening all its inlet and outlet connection and fixing the new one by all inlet and out let connection properly with all fitting and fixture complete all as specified and directed. Make: Sintex/Polycon/Rotex

Material and labour for disconnecting electric and water connection cooling tower of capacity upto 40 TR, FRP type complete with accessories like fan, fan motor and shifting to new location with in 500 mtrs, re-installing and re-connecting all electric and water connections with accessories including testing on completion complete all as specified and directed.

Material and labour for disconnecting electric connections of LT panel cum starter panel of AC plant and shifting to new location with in 500 mtrs, re-installing and reconnecting all electric connection as per existing with accessories complete all as specified and directed on site by Engineer-in-Charge. Note: (i) Rate quoted shall be deemed to be inclusive of the following : (i) Any repair / cutting/ welding / fabrication work on old/new location. (ii) Any rusted surface on the leg/support channel of panel shall be treated with red oxide primer prior to application of blavk bitumen paint. (iii) Necessary cutting of PCC new/old and new PCC shall deemed be to included in rate quoted.

Note:- The amount of schedule of credit on page No. 34 shall be deducted from the amount quoted against sch 'A' while deriving at the contract sum for accptance.

M/s Vinod Yadav (BID ID -3381540)

M/S SHARADA ASOCIATE (BID ID -3381270)