REPAIRS MAINT OF AIR HANDLING UNITS TOWERS, CONDENSOR UNITS CHILLER WATER LINES SUPPLY AND RETURN DUCTS, MODULATING VALVES PCBs SENSOR AND FILITERS OF AHUs AT RCI EMU AND CCE RND SOUTH UNDER GE I RND RCI HYDERABAD

Amount

Disconnecting and removing unserviceable tyre coupling set from the compressor and drive system of capacity 35TR to 50TR, supply and fixing new tyre coupling set with nuts, bolts including making alignment and testing complete all as directed

Disconnecting and removing unserviceable tyre coupling from the compressor and drive system of capacity 50TR to 75TR, supply and fixing new tyre coupling with nuts, bolts including making alignment and testing complete all as directed

Disconnecting and removing unserviceable tyre coupling assembly set from the pump motor and drive system of capacity 7.5HP to 15HP, supply and fixing new tyre coupling assembly set with nuts, bolts including making alignment and testing complete all as directed

Disconnecting and removing unserviceable tyre coupling from the pump motor and drive system of capacity 7.5HP to 15HP, supply and fixing new tyre coupling set with nuts, bolts including making alignment and testing complete all as directed

Disconnecting and removing unserviceable star coupling assembly set from the pump motor and drive system, supply and fixing new star coupling assembly set of sizes 100/110/ 150/(110/140) with nuts, bolts including making alignment and testing complete all as directed

Disconnecting and removing unserviceable rubber star coupling from the pump motor and drive system, supply and fixing new rubber star coupling of sizes 100/110/ 150/(110/140) with nuts, bolts including making alignment and testing complete all as directed

S&F in repairs, motor bearing bushes for pumpset for KDS-7.5HP/ KDS-10HP/ KDA -15HP complete all as directed.

Disconnecting pumpset/motor's of 1 to 5HP capacity electrical and mechanical connections and dismounting from monoblock/centrifugal pumpset/ AHU motor, cooling tower by arranging dummy plates to suction and delivery line, rewinding, varnishing, insulation, overhauling, greasing the monoblock pumpset, replacing the bearings etc., with new ones and fixing back in original position, connecting and testing complete all as directed.

All as per item No 8 above but for 5HP and upto 7.5HP capacity

All as per item No 8 above but for above 10HP and upto 12.5HP capacity

All as per item No 8 above but for above 15HP and upto 20HP capacity. Note for item No 8 to 11: Labour required for dismounting and refxing back for the job shall be carried out by outsourcing persons employed under relevant CA where Job's are located.

Disconnecting pumpset/motor electrical and mechanical connections upto 20HP capacity and dismounting from mono block/centrifugal pumpset/ AHU motor, cooling tower by arranging dummy plates to suction and delivery line, varnishing, insulation, greasing the monoblock pumpset, replacing of bearings etc., with new ones and fixing back in original position, connecting and testing complete all as directed.

Disconnecting the monoblock pumpset by arranging dummy plates to suction and delivery line, supply and fixing new monoblock pumpset (motor and pump) complete 5HP, 5 star rating, 7.1 litres per second discharge at not less than 40m metre head and connecting up complete all as specified and directed.

All as per item No 13 above but 10HP capacity and 7.8 litres per second discharge at not less than 40m head.

All as per item No 13 above but 15HP capacity and 12.5 litres per second discharge at not less than 40m head.

All as per item No 13 above but 20HP capacity and 12.5 litres per second discharge at not less than 40m head. Make for item No 13 to 16: Grundfos, Kirloskar, Crompton Greaves, Jyothi, Note for item No 13 to 16: Old pumpset complete shall be deposited to the store yard of AGE E/M.

Disconnecting electrically operated monoblock/ centrifugal pumpset coupled with induction motor upto 5HP capacity and mechanical connections from position by arranging dummy plates to suction and delivery line, removing from the existing position, overhauling, replacing the worn out impeller, bearing, gland bush, gland nut, gland rope, etc., with new ones, greasing, fixing back and testing complete all as directed.

All as per item No 17 above but for above 5HP and upto than 10HP capacity.

All as per item No 17 above but for above 10HP and upto than 15HP capacity. Note for item No 17 to 19: Impeller, Bearing, gland bush will be measured and paid separately. Cost of gland rope and gland nut is deemed to be included in quoted rate.

S&F in repairs, various size/capacity electrical terminal box including terminal plate for monoblock/motor/pump motor complete all as directed.

Supply only gland bush of any size and type complete all as directed.

Supply only air release stud for pumps of various capacities complete all as directed.

Supply only impeller for pumps upto 15HP capacity complete all as directed.

Supply only ball bearing of size 6205 ZZ to 6209 ZZ complete all as directed.

Supply only ball bearing of size 6210 ZZ to 6213 ZZ complete all as directed.

Supply only ball bearing of size 6305 ZZ to 6309 ZZ complete all as directed.

Supply only ball bearing of size 6310 ZZ to 6313 ZZ complete all as directed.

Supply only various sizes of pillow block bearing suitable for 5000Cfm to 10000Cfm AHU complete all as directed. Make for item No 24 to 28: SKF, NBC, Tata

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 directed.

S&F in repairs, cooling fan blades for motors of various capacities complete all as directed.

S&F in repairs, mechanical sealing for pumps of capacity upto 15HP complete all as directed. Note for item No 30 & 31: Labour required for carrying out the job shall be from the outsourcing persons employed under relevant CA where Job's are located.

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 directed. Note: Rate quoted shall be deemed to include the cost of taking shaft to workshop and back for carrying out repairs.

Disconnecting and removing the unserviceable burnt out timer, supply and fixing new Star Delta timer 0.3 to 30 Sec complete all as directed. Make: GE, SIEMENS, L&T, C&S, SCHNEIDER

Disconnecting and removing of the unserviceable fused dual element time delay fuse, supply and fixing new dual element time delay fuse unit TR S30R or FRN-R, 30Amps, 600V AC, 330V DC complete all as specified and directed. Make: FERRAZ SHAWMUT / FUSETRON/Bussmann or equivalent

Supply only, 3 pole Power contactor 415 Volts, 50Hz, type MNX, 95Amp AC3 rating complete all as specified and directed.

Supply only, 3 pole Power contactor 415 Volts, 50Hz, type MNX, 50Amp AC3 rating complete all as specified and directed.

Supply only, 3 pole Power contactor 415 Volts, 50Hz, type MNX, 32Amp AC3 rating complete all as specified and directed.

Supply only, 3 pole Power contactor 415 Volts, 50Hz, type MNX, 25Amp AC3 rating complete all as specified and directed.

Supply only, 3 pole Power contactor 415 Volts, 50Hz, type MNX, 18Amp AC3 rating complete all as specified and directed.

Supply only, 3 pole Power contactor 415 Volts, 50Hz, type ML 1.5, 25Amp AC3 rating complete all as specified and directed.

Supply only, 3 pole Power contactor 415 Volts, 50Hz, type ML 3, 40Amp AC3 rating complete all as specified and directed.

Supply only, 3 pole Power contactor 415 Volts, 50Hz, type ML 4, 70Amp AC3 rating complete all as specified and directed.

Supply only, Thermal Over Load Relay type MN5, relay range 30-50Amp complete all as specified and directed. Make for item No 35 to 43: L&T, ABB, Siemens, Legrand, Schneider as approved by GE. Note for item No 33 to 43: Labour required for carrying out the job shall be from the outsourcing persons employed under relevant CA where Job's are located.

Disconnecting and removing of unserviceable chilled water sensor from the existing position, supply and fixing new chilled water sensor for Trane, Dhanhambush, Carrier, York, Voltas chillers including testing complete all 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 directed. Make: Trane, Dhanhambush, BlueStar, York, Voltas

Supply only HRC fuses of size F1, A1L, A2, fixing type offset/open/closed slot, centre tag 2/4holes complete all as directed.

Taking down the unserviceable burnt out HRC fuses of 32Amp capacity and supply and fixing new HRC fuses BS size A1 to A4, F1, A1L, B1 to B3, C1 to C3 type offset / open / closed slot / single / double slot complete all as directed.

All as per item No 47 above but of 125Amp capacity of size A4, B1.

All as per item No 47 above but of 250Amp capacity of size B3. Make for item No 47 to 49: L&T, Siemens, Havells, C&S, Schneider, Standard. Note for item No 47 to 49: Labour required for carrying out the job shall be from the outsourcing persons employed under relevant CA where Job's are located.

Supply only, 25mm bore steel water tubing, medium grade, galvanized, ISI marked complete all as specified and directed.

All as per item No 50 above but 40mm bore of pipe.

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 52 above but 25mm dia globe or gate valve.

All as per item No 52 above but 40mm dia globe or gate valve.

All as per item No 52 above but 50mm dia globe or gate valve.

Supply only, 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 directed. Make:Prayag CAT No152 or equivalent as approved by GE

Supply only, 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 directed. Make:Prayag CAT No153 or equivalent as approved by GE. Note for item No 50 to 57: Labour required for carrying out the job shall be from the outsourcing persons employed under relevant CA where Job's are located.

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 directed. Note: Excavation and earthwork will be measured and paid separately.

All as per item No 58 above but for 100mm bore of pipe but conforming to IS 1239

All as per item No 58 above but for 80mm bore of pipe but conforming to IS 1239

All as per item No 58 above but for 50mm bore of pipe but conforming to IS 1239 Make for item No 58 to 61: TATA, JINDAL, PRAKASH

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 62 above but 80mm bore Butterfly Valve.

All as per item No 62 above but 100mm bore Butterfly Valve.

All as per item No 62 above but 150mm bore Butterfly Valve.

Supply only, 50mm dia non return valve in CI body flanged ends, swing type, gun metal seat ISI marked, with necessary bolts, nuts and washers complete all as specified and directed.

All as per item No 66 above but 80mm dia.

All as per item No 66 above but 100mm dia.

All as per item No 66 above but 150mm dia. Make for item No 62 to 69: Audco, Leader, Zolotto, Kartar

Supply only, 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 directed.

All as per item No 70 above but for 80mm bore.

All as per item No 70 above but for 100mm bore.

All as per item No 70 above but for 150mm bore. Note for item No 62 to 73: Labour required for carrying out the job shall be from the outsourcing persons employed under relevant CA where Job's are located.

Supply only Pre filter down to 20 micron level of approximate size 24 x 24 x 2 inches complete all as directed.

All as per item No 74 above but approximate size of 24 x 12 x 2 inches

All as per item No 74 above but approximate size of 20 x 18 x 2 inches. Make for item No 74 to 76: Aerodyne/Eurofill/Ultrafil

Supply only, water filter of 'Y' strainer for condenser pipe line of water cooled chiller unit of size 80mm to 100mm dia complete all as directed.

All as per item No 77 above but for 100mm dia.

All as per item No 77 above but for 150mm dia. Note for item No 74 to 79: Labour required for carrying out the job shall be from the outsourcing persons employed under relevant CA where Job's are located. Make for item No 77 to 79: Audco, Leader, Zolotto, Kartar

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 directed.

S&F in repairs, scale preventor guard of size 80 to 150mm dia in condensing water pipe line complete all as directed.

M&L, painting of mild steel pipes lines of any sizes, and types, LT panel board, dehumidifier, all accessories of AC plant with one coat of synthetic enamel paint by using spray gun machine after removing all dust and rust and writing date of painting with black synthetic enamel paint complete all as directed.

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 directed.

Supply only, Sprinkler assembly/Nozzle assembly with PVC pipes including dummies for 20TR capacity cooling towers complete all as directed.

All as per item No 84 above but for 45/50/60 TR capacity.

All as per item No 84 above but for 80TR capacity.

All as per item No 84 above but for 100/120 TR capacity.

All as per item No 84 above but for 150/160 TR capacity. Note for item No 84 to 88: Labour required for carrying out the job shall be from the outsourcing persons employed under relevant CA where Job's are located.

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

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

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

Supply only, 500litres capacity triple layered rotational moulded polyethylene water storage tank (cylindrical vertical with closed top) complete all as specified and as directed.

Supply only, 1000litres capacity triple layered rotational moulded polyethylene water storage tank (cylindrical vertical with closed top) complete all as specified and as directed. Note for item No 92 & 93: Labour required for carrying out the job shall be from the outsourcing persons employed under relevant CA where Job's are located.

Leak testing for AC plant of 40TR capacity Nitrogen(N2) pressure (Nitrogen to be arranged by the contractor) after evacuating the existing gas from the system into empty cylinder by separating the entire system like compressors, condenser, cooling coil refrigerant lines and rectifying the leakage including cutting welding brazing etc., re-connecting including replacement of ‘O’ rings, washers, gaskets etc.,with new ones flushing out the Nitrogen, vacuumising, charging the gas complete all as directed.

All as per item No 94 above but for 40TR to 75TR capacity AC plant.

All as per item No 94 above but for 90TR to 150TR capacity AC plant. Note for item No 94 & 96: Supply of Refrigerant gas will be measured and paid for separately. Nitrogen to be arranged by the contractor.

Descaling of condenser of 40TR by circulating descaling agent DC-96 through condensers by forced feed method by removing the end covers of the condensers, cleaning the each tube of condenser thoroughly by brushing, re-fixing the end covers with new rubber gasket, nuts bolts, washers and testing complete all as directed.

All as per item No 97 above but for 40TR to 75 TR capacity

All as per item No 97 above but for 75TR to 150TR capacity

Supply and filling Refrigerant gas R-22

Supply and filling Refrigerant gas134A

Supply and filling Refrigerant gas 407C Make for item No 100 to 102: Refron, Mefron, Freon as approved by GE.

Opening covers of AHU, descaling of the AHU coil to bring down the high pressure, cleaning of the dust particles formed on the coil system with diluted 'ASFOCLEAN' chemical or Caustic Soda by pouring on the coil with leg pump or mechanical system till the clearing of the dust on the coil as primary wash and using detergent powder or surf water as final wash, testing complete all 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 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 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 directed.

S&F in repairs, cast metal cooling tower 4 No of fan blades suitable for 125 TR cooling tower including hub assembly complete all 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) covered with polythene sheet faced hessian cloth, GI chicken wire mesh, protected with 10mm thick cement plaster in cement mortar 1:4 and painted with two coats of cement based paint complete all as directed.

Dismantling and taking out unserviceable insulation, supply and fixing thermal insulation to exposed duct with fibre glasswool 50mm thick (Density 48Kg/Cum), covered with GI chicken wire mesh and cladded with 28 SWG Aluminium sheet in unconditioned area complete all as directed. Make for item No 108 & 109: Spintex, FGP, Lloyds

Disconnecting microprocessor based control panel of chiller package AC plant of capacity 125 TR Make BlueStar/Voltas/Carrier/ Dhanhambush 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 directed. Note: Work shall be carried out through OEM after obtaining prior approval of Accepting Officer. Payment shall only be made upon production of paid voucher along test report.

Taking down non return valve from existing position, carrying out repairs to non return valves of sizes 80 to 100mm dia by opening cover plate, welding the disc, spindle, cleaning and refxing back to its original position complete all as directed.

All as per item No 114 above non return valve of size 150mm dia

Repairs to existing Modulating valve of size 50mm including gear box fixed in chilled water pipe line by servicing, reprogramming BMS sysem, servicing of DC motor 24V, replacing the thermostat and limit switch complete all as specified and directed.

Supply only, Modulating valve of size 80mm including actuator, thermostat and limit switch complete all as specified and directed. Note: Labour required for carrying out the job shall be from the outsourcing persons employed under relevant CA where Job's are located. Make: Honeywell or equivalent as approved by GE

CHITRA ENGINEERING CORPORATION

Universal refrigeration and Engineering Company

Bismi Engineering

omsai thermax engineers