IM RREPAIR AND MAINT OF AC PLANTS AT STORAGE SHEDS AT AFS AMLA

Amount

Material and labour for opening of shell and tube water cooled condensers of both side including dismantling the water lines for inlet and outlet of condenser 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 as per condender tube size at the entire length of condenser that scrapping down the sludge precipitated in side the tube .Closing both side of condenser and circulating the descaling solution in all tubes of condenserof each plant through the circulatiing pump and allows holding it for 30 mins for chemical reaction.Opening the condenser both sides and clean with iron rod connected with nylon brush of suitable size as per condenser copper tube size at the entire length of condenser to ensure that descaling process has been complete then closing the condenser at both endand circulating clean water in all tube of condenser of each plant and drain out the process will be continue till the satisficaion of EIc then fixing new gasket for both ends of condenserof plant tighten with new nut end bolt for the following size AC plant all as specified and directed.

3 x 35 TR capacity

3 x 12 TR capacity

3 x 15 TR capacity

Material and labour for de-scaling of chiller unit AC central type of following capacities with copper tubes by removing nuts & bolts, water connection and filling up of de-scaling acid HCL in condenser and manually cleaning of copper tubes with using nylon brush of superior quality, iron rod for removing of complete scaling from tubes and water circulation through condenser including replacement of rubber gasket, nut & bolts complete all as specified and directed. Note :-Every three month de scaling will be done in both the AC plant 22, and 54

3 x 35 TR capacity

3 x 12 TR capacity

Material and labour for overhauling of compressor capacity 15TR Make - Voltas complete all as per manufacturer's instruction by authorised dealer/ workshop for improved performance and designed parameter including the following complete all as specified and directed by Engr-in-charge. (ii) Replacement of crankshaft of suitable size including dismantling transporting to authorised approved workshop and back including refixing after repair and testing. (iii) 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 vaccum test and pressure test at specified pressure to detect leak and again same tests after leak repair to ensure leakage in complete system. Note :- Supply only following parts of existing make 15TR capacity compressor complete all as specified and directed.

Bushing with collar

Half section bearing

Connecting rod assembly

Shaft seal assembly

Bushing for piston pin

Piston

Piston rings

Oil rings

cylinder liner

Oil pressure valve

Suction valve ring plate

Discharge valve ring plate

Liquid line strainer

Oil strainer and plate

Castle nuts

Split pins

Crankshaft

Set of gasket

Set of neoprene"O' ring

Suction stop valve assembly

Discharge stop valve assembly

Attending break down of AC plant of 20 TR to 70 TR capacity by only auth OEM rep / team 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 fan belt, compressor, gas charge, cooling tower, power contactor, starter, MCCBs, Micro processor based control panel, pumps etc as required in ground/as ordered by Engr-in-charge. complete all as specified and as directed.

Material and labour for spray painting to central AC Plants of following capacity comprising of compressor, Motor frame & foundation, condenser all connected pipe lines in stranded colour code AHU unit panels boards & cooling tower etc with two coat of heat resistance paint of approved grade and shade including lettering and numbering after carrying out necessary preparation of surface by emery paper of plant capacity 34 TR capacity With 17TR stand by all as specified and directed.

Taking down electric induction motors of following capacities after disconnecting incoming electric connection, & removing to work shop for repairs/ rewinding.Dismantling the motor, separating the parts such as rotor , stator, cleaning of all dismantled parts, taking down burnt / damaged winding cleaning the slots , packing the slots with insulated packing material, rewinding with super enameled copper winding wire of same guage varnishing the stator & drying in oven reassembling the motor complete with and including new packing material, new set of bearings, terminal plate, transporting back to plant room, material, new set of bearings, terminal plate, transporting back to plant room, all as specified and directed.

2 to 5 HP ( Condensor pump,Chillar pump, CT fan pump motor)

5 to 10 HP (for AHU)

15 to 20 HP (for Compressor Motor)

Supply & fix in repairs CT fan roller bearing of size 30204 J2/Q all as specified and directed.

Supply & fix in repairs Bearing for cooling tower motor 1.5 / 2 HP all as specified and directed.

Supply & fix in repairs Ball brass valves, high pressure with Polyethylene float and fly nut complete screwed for Iron pipe or brass ferrule of size 20 mm dia all as specified and directed.

Taking down UNSV liquid line filter drier and Supply & fix liquid line filter drier as per existing make and specification and suitable size to fixing with existing refrigerant line for 11/12 TR capacity compressor of AC plant all as specified and directed.

Taking down UNSV liquid line filter drier and Supply & fix liquid line filter drier as per existing make and specification and suitable size to fixing with existing refrigerant line for 8.5TR capacity compressor of AC plant all as specified and directed.

Taking down UNSV liquid line filter drier and Supply & fix liquid line filter drier as per existing make and specification and suitable size to fixing with existing refrigerant line for 10/15TR capacity compressor of AC plant all as specified and directed.

Supply and fixing in replacement of LP/HP Cut out MP-15 all as specified and directed.

Supply and fixing in replacement LP cut out MP-1 all as specified and directed

Supply and fixing in replacement HP cut out MP-5 all as specified and directed.

Supply and fixing in replacement Oil pressure cut out MP-55 all as specified and directed.

Supply and filling of new compressor oil No - 68 suitable for AC Compressor all as specified and directed. Make : Castrol / Servo /HP

Supply and Fix in repairs of angle Valve, brass 1/4" complete all as specified and directed.

Supply and fix in repairs Shut Off valve brass 1/4" bore complete all as specified and directed.

Supply & Fix in repairs of condenser safety valve, brass 0 to 350 PSI sealed of any size confirming to ISI including evacuation of refrigeration gas and recharging of taken out gas all as specified and directed. Make - Castle/Henry/Brassomatic

Supply and filling of new compressor oil polyster lubricant grade 160-SZ suitable for Scroll compressor all as specified and directed.

Supply and fixing Heating element threded type capacity 3KW as per sample (each row 3 heaters) proper fixing in heater box with opening , closing system of heater box complete all as specified and directed .

Supply and fixing Heating element threded type capacity 6KW as per sample (each row 3 heaters) proper fixing in heater box with opening , closing system of heater box complete all as specified and directed .

Supply and fixing PVC insulated Industrial type stranded copper cable size 6 sqmm 3Core all as specified and directed.

Supply and fix in repairs dry & wet bulb thermometer mercury filled and graduated on tube including removing existing unserviceable thermometer all as directed.

Material and labour for vacumising the plant by using vaccum pump upto (-) 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 20TR to 70 TR AC Plant.

Material and labour for charging N2 or Nitrogen Gas in 2 x 35 TR working capacity with 1 x 35 TR standby AC plant maintaining pressure 350 Psi for checking of Gas leakage and removing water vapour choked in line, flushing out the complete system including gas leakage and detection with halide torch/ soap foam solution in system including gas welding flushing and making good the pipe line to make the system leak proof complete all as specified and as directed.

All as per srl item No 27.00 here-in-before but of capacity 2 x 15 TR working with 1 x 15 TR standby.

All as per srl item No 27.00 here-in-before but of capacity 2 x 12 TR working with 1 x 12 TR standby.

All as per srl item No 27.00 here-in-before but of capacity 4 x 8.5 TR working with 2 x 8.5 TR standby.

supply and charging refrigerant gas R-22 in returnable cylinder Make - Mafron/Refron/Floron

Supply and charging refrigerant gas R-407c in returnable cylinder. Make - Mafron/Refron/Floron

Material and labour for Dismantling the fins of cooling tower of capacity up to 3x35 TR central AC plant 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 50 mm float valve complete all as specified and directed. Note: The time between first and second cleaning shall be 3 month minimum.

Material and labour for spray painting to central AC Plants of following capacity 3X35 TR comprising of compressor, Motor frame & foundation, condenser, all connected pipe lines in stranded colour code as existing and all inlet and out let lines connecting to cooling tower ,painting of complete cooling tower in existing colour, connecting ladder, base and inlet and outlet condensing pipe line with sky blue paint complete in plant room pipe lines of diff size with two coat of sky blue paint over a coat of red oxide of approved grade and shade including lettering and numbering after carrying out necessary preparation of surface by emery paper of plant capacity 2X35 TR capacity With 1x35TR stand by all as specified and directed.

Taking down old unsv fins/cells of cooling tower and supply and fix PVC fins(honey comb) suitable for fiber glass cooling tower complete suitable for upto 70TR of AC plant all as specified and dirtected .

Material and labour for Cleaning and Servicing quarterly of nozzles of cooling tower completly by draining out water and draining out all rusted/ particles from hot water tank after opening all heating element fixed in tank of central AC plants and after cleaning fixing all element properly to their existing place of any capacity, as and when required or directed by the Engineer in charge.

Supply and fixing in repair spray nozzles of cooling tower fixed in cooling tower pipe line all as specified and dirtected .

Supply and fixing in repair float valves of size 20/ 25 mm dia complete with rod and ball of cooling tower pipe line all as specified and dirtected .

Supply and fix in repair Gun-metal, globe or gate valves, with iron wheel head, screwed both ends for iron pipe and fixed valve 20 mm dia all as specified and as directed

Supply and fix in repair Gun-metal, globe or gate valves, with iron wheel head, screwed both ends for iron pipe and fixed valve 25 mm dia all as specified and as directed

Supply and fix in repair Gun-metal, globe or gate valves, with iron wheel head, screwed both ends for iron pipe and fixed valve 32 mm dia all as specified and as directed

Supply and fix in repair butter fly valves of 50 mm dia complete with all fittings and fixtures washer, rubber gaskit all as specified and as directed.

Supply and fix in repair butter fly valves of 80 mm dia complete with all rubber washer, gasket all as specified and as directed.

Supply and install in repairs including testing water cooled hermatically sealed scroll compressor of capacity 11/12 TR, three phase, UL electrical ratings 460 V3 - 60 Hz and 380-400 V3 - 50 Hz with thermally protected system including taking down old U/S compressor complete all as specified and directed.

Supply and install in repairs including testing Air cooled hermatically sealed scroll compressor of 8.5 TR capacity, three phase, UL electrical ratings 460V3 - 60 Hz and 380-400 V3 - 50 Hz with thermally protected system including taking down old U/S compressor complete all as specified and directed.

Supply and fix Pilot solenoid coil 3 way complete all as specified and directed.

Supply and fix in replacement mono block pump set of cap 0.6 kw (0.75 hp), 560 LPH, 9 mtr head single phase, 240 volts suitable for humidifier system including taking down old U/S mono block pump complete all as specified and directed. Make :- Vguard/Lubi/Kirloskar

Supply and fix in repair chiller motor /hot water motor shaft seal assembly as per sample complete all as specified and as directed.

Supply and fix copper fuse links of temperature rating 74°C for fire damper for supply air ducting including taking down old U/S fuse links complete all as specified and directed.

Supply and fix brass liquid valve of size 1/2" incl cutting, brazing and testing complete all as specfied and directed.

S&F as in repair Fan Belt Size A-74 as per sample complete all as specified and directed.

S&F as in repair Fan Belt Size B-72 as per sample complete all as specified and directed.

S&F as in repair Fan Belt Size B-80 as per sample all as specified and directed.

S&F as in repair Fan Belt Size B-70 as per samplecomplete all as specified and directed.

S&F as in repair Fan Belt Size B-117/118 as per sample complete all as specified and directed.

Supply & Fixing as in repair Air filter for 10000 CFM AHU unit for type Air conditioning plant micron type complete all as specified and directed.

Supply & Fixing as in repair Air filter for 12000 CFM AHU unit for type Air conditioning plant micron type complete all as specified and directed.

Supply & Fixing as in repair Air filter for 14000 CFM AHU unit for type Air conditioning plant micron type complete all as specified and directed.

Supply & Fixing as in repair Air filter for 13000 CFM AHU unit for type Air conditioning plant micron type complete all as specified and directed.

Supply and fixing as in repairs expansion brass valve as per existing suitable for 35 TR capacity compressor in site including cutting brazing and testing with complete accessories complete all as specified and as directed

Supply and fixing as in repairs expansion brass valve as per existing suitable for 15 TR capacity compressor in site with nut bolt complete accessories complete all as specified and as directed

Removing of all fine/alpha/hepa filters of AHU from their positions and laying out the filters at site for refixing after cleaning them including cleaning of AHU cooling coil using chemical with water jet/ brass brush in-order to remove all type of sludge/dust precipitated on the coil and filter without any damage to the copper cooling coil and then washing the cooling coil with fresh water and then air blowing the same to the complete satisfaction of Engr-in-Charge. Cooling coil drain water line shall be clean, if any type of obstacle is there in the flow of water, all to the complete all as specified and as directed

Supply and fixing as in repairs expansion brass valve as per existing suitable for 12 TR capacity compressor in site with complete including cutting brazing and testing accessories complete all as specified and as directed.

Supply and fixing as in repairs expansion brass valve as per existing suitable for 8.5 TR capacity compressor in site with complete accessories complete all as specified and as directed.

Disconnecting, dismantling and removing central shaft of air handling units of central AC plants of any capacity and any make for repair, transporting to the work shop, opening up for repairs carry out the repairs, of shaft including re-metalling, turning, brazing and polishing work of AHU shaft of any size, cleaning, greasing and overhauling including replacement of unserviceable/worn out ball bearing and other minor spares, reassembling after repairs, bringing back to its location fixing in original position, connecting instt, and testing on full load capacity and commissioning to the entire satisfaction of Engr in charge. Note : Unit rate quoted by tenderers shall deem to incl for 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 fix in replacement of hot water circulating coil made of copper size 127X127 CM including necessary cutting brazing ,testing at existing AHU complete all as specified and directed

Supply and fix in repair 13mm Nitril rubbber insulation class O suitable for Cap 8.5TR unit suction & Discharge copper tube of size 1 1/8" & 5/8" complete all as specified and directed

Supply and fix in repair 16 mm Nitril rubbber insulation class O suitable for Cap up to 35TR unit suction & Discharge condensing line of cap up to 100 mm dia all as required at site specified and directed

Supply and fix in repair MNX25 type power Contactor, 3 pole, 415 V, 50Hz, with auxulary Contact 2 NO+2NC suitable for Non-Inductive or Slightly Inductive ,Resistive Load (AC1- 40 Amps rating with the existing complete all as specified and directed

Supply and fix in repair MNX40 type power Contactor, 3 pole, 415 V, 50Hz, with auxulary Contact 2 NO+2NC suitable for Non-Inductive or Slightly Inductive ,Resistive Load (AC1- 40 Amps rating with the existing complete all as specified and directed

Supply and fix in repair MNX70 type power Contactor, 3 pole, 415 V, 50Hz, with auxulary Contact 2 NO+2NC suitable for Non-Inductive or Slightly Inductive ,Resistive Load (AC1- 40 Amps rating with the existing complete all as specified and directed

Supply and fix in repair MCCB 3 pole 100 Amps with breaking capacity 18 KA DU100 /DY100 complete all as specified and directed

Supply and fix in repairs MCCB 125 Amps, 3 pole 415 V 16 KA suitable for main incomming in exisitng panel along with all connected accessories and arrangement including dismantling the old MCCB complete all as specified and directed

Supply and fix in repairs MCCB 160 Amps, 4 pole 415 V 36 KA thermal magnetic release with overload setting of 80-100% in existing panel along with all connected accessories including dismantling old MCCB all as specified and direted

Supply and fix in repairs MCCB 250 Amps, 4 pole 415 V 50 KA thermal magnetic release with overload setting of 80-100% in existing panel along with all connected accessories including dismantling old MCCB all as specified and direted

Supply and fix in repair MCCB, 4 pole of current rating 63 Amps thermal release and rupturing capacity 16 KA Nos in existing panel along with all connected accessories including dismantling old MCCB all as specified and direted

Supply and fix in repair chilled water sensor for AC Plants of any capacity complete all as specified and as 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 fix in Replacement of 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 fix in Replacement of 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 fix in Replacement of temperature gauge circular type 100 mm dia with brass adoptor 15 mm inlet only with temp range 0 to 100 degree centigrade complete all as specified and directed.

Supply and fix 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 fix in Replacement of water pressure /switch /cutout (DANFOSS) box type of existing size complete all as specified and directed.

Repair & relaying of Electrical interlocking wiring of LT panel of AC plant including all connected lux, cable, fuzes, complete all as specified and directed . NOTES :- (i) The cost of minor spares required including connector, lux, wire/cable, fuses required is deemed to be included in the quoted rate. (ii) Spares incorporated during repair of the electric panel will be measured separately under relevant item.

Push Button

KP-15 cutout Make:- Dafoss/Indfoss

Loading unloading coil

Contactor ML-2 as per existing

Timer 30-120 Sec.

Relay 17.5-22 Amp Make -L&T/ Siemens/ Legrand

ALV D-2 single phase preventer

MCB TPN 63 Amps, 10 KA Make -Siemens/ Legrand/ Hagger(L&T)

MCB SP 32Amps, 10 KA Make -Siemens/ Legrand/ Hagger(L&T)

Relay, MN-2 06-10 Amps Make -Siemens/ Legrand/ Hagger(L&T)

Relay, 11-18 Amps Make -Hagger(L&T)/ Siemens/ Legrand

Relay, MN-2 09-15 Amps Make -Hagger(L&T)/ Siemens/ Legrand

Digital type Ammeter 3 phase & CT coil Make- Conzerv/Selec/ AE

ON/OFF switch

Digital type Voltmeter 3 phase Make- Conzerv/Selec/ AE

Indicator (R-Y-B ), 15mm dia, Neon type Make- As per sample

MCCB 63 Amp Model DU-100 Make:- L&T/ Legrand/ Havells

ADD BLOCK suitable for existing contactor

CT Coil 50/5

PVC insulated multi stranded copper cable size 1.5 sqmm 2Core

Amp meter analog /normal type 3 Phase (0-100 A )

Volt meter analog/normal type 3 phase (0-500 V)

Flexible condute of size 25 mm

Supply and fix in repairs spherical insert bearing Model no SA 208 or equivalent Make : FAB/SKF/ NRB/NTN

Material and labour for putting/fixing POP/ white cement over iron net and lead wool on hot water tank cover of AC plant 12,13 21,22,54 along with hot water circulating pipe line in ac plant room complete where pop broken and wire mesh/lead wool taken out with nice finishing directed at site where necessary all as specified and as directed

Supply and fixing in repair Rotational moulded polyethylene water storage tanks of capacity 2000 ltr (cylindrical vertical with closed top) hoisted and fixed in position for storage of water of cooling 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 in SSR Part -I

Supply and fixing in repair 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 cooling 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 .

Note : The amount against Schedule of Credit on Page No. 40(R) shall be deducted from the total amount quoted against Sch 'A' while deriving lum Sum for Acceptance.

M/S J J ENTERPRISES

M/s Vinod Yadav

Uma engineers