REPAIR REPLACEMENT OF DEFECTIVE PARTS, OVERHAULING OF COMPRESSOR REWINDING OF AC PLANTS MOTORS, COOLING TOWERS AND ALLIED WORK SUCH AS PUMPS MOTORS, PVC FILLS ETC OF AC PLANTS AT NAD EXPLOSIVE AND NON EXPLOSIVE AREA AND OUTSIDE AREAUNDER GENW KARANJA

Amount

Material and labour for overhauling of compressors SMC 4-65 Make compressor complete all as per manufacturer's instruction by authorised dealers /workshop for improved performance and designed parameter including the following complete all as specified and as directed by Engr-in-charge. (i) Replacement of crank shaft of suitable size including dismantling transporting to authorised approved work shop and back including refixing after repair and testing. (ii) Complete dismantling of each part of compressors cleaning each part of compressors carrying out preventive work like oiling, greasing, replacing defective parts reassembling compressors complete with vaccum test and pressure test at specified pressure to detect leak and again same tests after leak repair to ensure leakage in the complete system. Note: (a) New spare parts of compressors as required shall be measured and paid seperately as supply only and cost of labour and T&P shall be deemed to include in the quoted rate of this item. (b) Unit rate quoted shall include for the necessary elelctrical check i.e checking of panel wiring to run the compressor smoothly. (c) Before opening of compressor the freon gas to be taken in empty cylinder by the help ice or as directed by Engr-in-charge. (d) Unit rate quoted shall also be included for testing the whole system for any leakage using nitrogen gas by vaccumising the system and filling the system with pressurise nitrogen to test the leakage including nitrogen gas as required and top up repaired compressor and whole system with refrigerant gas R-22 and compressor oil after confirmation of no leakage. (e) Unit rate quoted shall also be inclusive of charging of compressor oil and refrigerant of sufficient quantity or as directed by Engr-in-charge. (f) Minor items required for smooth functioning of compressor is included in the quoted rate of the item. Location :- DBM 11 and DBM 14

Supply only following parts of make SMC 4-65 model Accel compressor complete all as specified and as directed by Engr-in-charge.

Bushing with collar

Half section of bearing

Rocker for unloading mechanism

Connecting rod assembly

Shaft seal assembly including 10 AG

Bushing for piston pin

Piston with pin and Rings

Cylinder liner with suction valve assembly

Oil pressure valve

Compressor safety valve

Suction valve ring plate

Suction valve retaining plate

Discharge valve ring

Discharge valve retaining plate

Suction strainer for SMC 4-65

Oil strainer and filter

Castle Nuts

Split pins

Scraper Ring

Seeger Ring

Cup washer

Crank shaft for SMC 4-65

Set of gasket for SMC 4-65

Set of neoprene 'O' ring SMC 4-65

Sealing ring set SMC 4-65

Dowty ring set SMC 4-65

Set of aluminium gasket SMC 4-65

Suction stop valve assembly

Discharge stop valve assembly

All as per item No.1.00 here-in-before but for SMC 4-100 Compressor. Location: SUT Torpedo and DBM 12/13

Supply only following parts of make SMC 4-100 model Accel compressor complete all as specified and as directed by Engr-in-charge.

Bushing with collar

Half section of bearing

Rocker for unloading mechanism

Connecting rod assembly

Shaft seal assembly including 10 AG

Bushing for piston pin

Piston with pin and Rings

Cylinder liner with suction valve assembly

Oil pressure valve

Compressor Safety valve

Suction valve ring plate

Suction valve retaining plate

Discharge valve ring

Discharge valve retaining plate

Suction strainer for SMC 4-100

Oil strainer and filter

Castle Nuts

Split pins

Scraper Ring

Seeger Ring

Cup washers

Crank shaft for SMC 4-100

Set of gasket for SMC 4-100

Set of neoprene 'O' ring SMC 4-100

Sealing ring set SMC 4-100

Dowty ring set SMC 4-100

Set of aluminium gasket SMC 4-100

Suction stop valve assembly

Discharge stop valve assembly

All as per item No.1.00 here-in-before but for SMC 8-65 Compressor. Location: Uran workshop and SBM-04

Supply only following parts of make SMC 8-65 model Accel compressor complete all as specified and as directed by Engr-in-charge.

Bushing with collar

Half section of bearing

Rocker for unloading mechanism

Connecting rod assembly

Shaft seal assembly including 10 AG

Bushing for piston pins

Piston with pin and Rings

Cylinder liner with suction valve assembly

Oil pressure valve

Compressor safety valve

Suction valve ring plate

Suction valve retaining plate

Discharge valve ring

Discharge valve retaining plate

Suction strainer for SMC 8-65

Oil strainer and filter

Castle Nuts

Split pins

Scraper Ring

Seeger Ring

Cup washer

Crank shaft for SMC 8-65

Set of gasket for SMC 8-65

Set of neoprene 'O' ring SMC 8-65

Sealing ring set SMC 8-65

Dowty ring set SMC 8-65

Set of aluminium gasket SMC 8-65

Suction stop valve assembly

Discharge stop valve assembly

Material and labour for overhauling of oil pump of compressor SMC model Accel make by opening and dismantling all parts and cleaning in petrol to the entire satisfaction of Engr-in-charge and reassembling including replacement of 2 Nos gear wheels, split pins all as per manufacture instrurctions and testing the oil pump for improved performance complete all as specified and as directed by Engr-in-charge.

Material and labour for rewinding of induction motor of compressor motor, AHU Blower, chiller, condensor motor comprising of the following activities for induction motor of following capacities complete all as specified and as directed by Engr-in-charge. (i) Disconnecting and removing the electric motor from installed position and loading, unloading, transporting to authorised /approved work shop. (ii) Dismantling existing burnt winding from the motor and rewinding complete with super enamelled copper winding wire of existing guage including all material such as insulated paper sleeves tape varnish etc., complete for class F insulation and including shaft metalising, bearing cover slieving, necessary replacement of cooling fan, nuts, bolts, etc., (iii) Loading, unloading and transporting motor and reinstalling in position and in alignment including electric conection commissioning and testing in actual working condition for 8 hours continuosly to check the performance on full load and designed RPM to the complete satisfaction of Engr-in-Charge. (iv) Replacement of 02 Nos of suitable size of ball bearing of existing size of the following type and capacity of induction motors.

Induction Motor of Capacity 40 HP

Induction Motor of Capacity 30 HP

Induction Motor of Capacity 25 HP

Induction Motor of Capacity 20 HP

Induction Motor of Capacity 15 HP

Induction Motor of Capacity 10 HP

Induction Motor of Capacity 7.5 HP

Induction Motor of Capacity 5 HP

Induction Motor of Capacity 3HP

Supply and fix in replacement of wall mounting /hanging type LED digital type Temperature /relative humidity indicator with 2" large size display and minimum size (445x130x115mm) of Make: Linear insturments /Charun with following specifications complete all as specified and as directed by Engr-in-charge. Display : 2" Red LED x 2 Display Accuracy : + 0.5% Resolution : 0.1 deg C, 0.1 % RH Input : 4-20mA Enclousure : Powder coated metal case Operating Voltage : 230V AC

Supply and fix in replacement of wall mounting /duct mounting humidity cum temperature transmiter sensor suitable for LED display of relative humidity and temperature indicator of Make: Linear insturments /Charun with following specifications complete all as specified and as directed by Engr-in-charge. Measuring Range : 0 to 100 % RH, 0 to 100 deg C Accuracy : + 2% RH, + 0.3 deg C Output : 4-20mA Supply voltage : 12 to 40 VDC Housing : ABS plastic water tight enclosure (IP 65)

Material and labour for laying, jointing, connecting and testing in repairs sensor cable 3 core 2.5 sqmm PVC insulated and sheathed with bare annealed copper conductor as per IS 694:1990 for connecting RH+T sensor to RH+T Indicators as complete all as specified and as directed by Engr-in-charge.

Material and labour for laying, jointing, connecting and testing in repairs indicator cable 2 core 1.5 sqmm PVC insulated and sheathed with bare annealed copper conductor complete all as specified and as directed by Engr-in-charge.

Material and labour for repair of condenser pump/ chiller pump any type including replacement of impeller and bearings both side, replacement of main shaft, outer body of the pump of following capacities complete all as specified and as directed by Engr-in-charge.

Chiller/ condenser pump of capacity 10 HP

Chiller/ condenser pump of capacity 7.5 HP

Chiller/ condenser pump of capacity 5 HP

Supply and fix in repairs power contactor 3 pole, type MNX09, with 2 NO + 2 NC aux contacts with standard coil voltage 415 volts, rating 25 Amps complete all as specified and as directed by Engr-in-charge.

Supply and fix in repairs power contactor 3 pole, type MNX 12 with 2 NO + 2 NC aux contacts with standard coil voltage 415 volts, rating 30 Amps complete all as specified and as directed by Engr-in-charge.

Supply and fix in repairs power contactor 3 pole, type MNX 18 with 2 NO + 2 NC aux contacts with standard coil voltage 415 volts, rating 30 Amps complete all as specified and as directed by Engr-in-charge.

Supply and fix in repairs power contactor 3 pole, type MNX 45 with 2 NO + 2 NC aux contacts with standard coil voltage 415 volts, rating 85 Amps complete all as specified and as directed by Engr-in-charge.

Supply and fix in repairs power contactor 3 pole, type 3TF47 7 with 2 NO + 2 NC aux contacts with standard coil voltage 415 volts, rating 70 Amps complete all as specified and as directed by Engr-in-charge.

Supply and fix in repairs power contactor 3 pole, type 3TF 33 00 0A with standard coil voltage 415 volts, rating 40 Amps complete all as specified and as directed by Engr-in-charge.

Supply and fix in repairs power contactor 3 pole, type 3TA 13 with standard coil voltage 415 volts, rating 32 Amps complete all as specified and as directed by Engr-in-charge.

Supply and fix in repairs power contactor 3 pole, type 3TA 11 with standard coil voltage 415 volts, rating 22 Amps complete all as specified and as directed by Engr-in-charge.

Supply and fix in repairs power contactor 3 pole, type AV 1-18 with standard coil voltage 415 volts, rating 18 Amps complete all as specified and as directed by Engr-in-charge.

Supply and fix in repairs MCCB 3 pole, type DZ1-160D# with standard coil voltage 415 volts, 36KA complete all as specified and as directed by Engr-in-charge.

Supply and fix in repairs MCCB 3 pole, type DU100 with standard coil voltage 415 volts, 10KA complete all as specified and as directed by Engr-in-charge.

Supply and fix in repairs MCCB 3 pole, type SKB 7 with standard coil voltage 415 volts, 25KA complete all as specified and as directed by Engr-in-charge.

Supply and fix in repairs MCCB 3 pole, type HPL S with standard coil voltage 415 volts, 50KA complete all as specified and as directed by Engr-in-charge.

Supply and fix for MCCB type DZ1-160N, 3 pole having thermal release range 16-80 Amp and breaking capacity ICU, 30 KA at 415 V, 50 Hz, AC complete all as specified and as directed by Engr-in-charge.

Supply and fix for MCCB 4P, 415 Volts, 50 Hz, 10 KA of rating 100 Amp NKF 100C complete all as specified and as directed by Engr-in-charge.

Supply and fix in repairs of compressor solenoid valve with coil 10W, 230V complete all as specified and as directed by Engr-in-charge.

supply and fix in repairs low pressure sensor as per existing make and type complete all as specified and as directed by Engr-in-charge.

supply and fix in repairs oil pressure sensor as per existing make and type complete all as specified and as directed by Engr-in-charge.

Supply and fix in repairs of high pressure sensor as per existing make and type complete all as specified and as directed by Engr-in-charge.

Supply and fix in repairs of motor and voltage protective device as per existing make and type complete all as specified and as directed by Engr-in-charge.

MVPD EC 5-30 A

MVPD EC 30-220A

Micro VPD (Split) 360-500V AC

Supply and fix in repairs of chilled water sensor as per existing make and type complete all as specified and as directed by Engr-in-charge.

Supply and fix in repair 100mm dia dial type industrial type imported thermometer complete all as specified and as directed by Engr-in-charge.

Supply and fix in repairs indicating lamps RYB-01 set for existing LT panel board complete all as specified and as directed by Engr-in-charge.

Supply and fix in repairs multifunction meter of existing LT panel board complete all as specified and as directed by Engr-in-charge.

Supply and fix in repairs of star delta electronic timer working voltage 230V, 50 Hz, of type ET 100 complete all as specified and as directed by Engr-in-charge.

Supply and fix in repairs of star delta electronic timer working voltage 230V, 50 Hz, of type GIC micon 225 complete all as specified and as directed by Engr-in-charge.

Supply and fix in repairs of single phase preventor type SM-301 series, 3 phase, 415 Volts, 50 Hz complete all as specified and as directed by Engr-in-charge.

Supply and fix in repairs of single phase preventor type VSP 3 series with auxiliary block, 3 phase, 415 Volts, 50 Hz complete all as specified and as directed by Engr-in-charge.

Supply and fix in repairs MCB 3 pole, type C 40 with standard coil voltage 415 volts, 6KA complete all as specified and as directed by Engr-in-charge.

Supply and fix MCB TPN, 415 Volts, 50 Hz, 10 KA conforming to IS 8828 of rating 40-63 Amps complete all as specified and as directed by Engr-in-charge.

Supply and fix MCB TPN, 415 Volts, 50 Hz, 10 KA conforming to IS 8828 of rating 6-32 Amps complete all as specified and as directed by Engr-in-charge.

Supply and fix for rotary type switch suitable for LT panel board complete all as specified and as directed by Engr-in-charge.

Material and labour for servicing/ cleaning of 10 to 34 TR cooling towers by dismantling top cover, fan with fan motor and removing the honey comb grills, cleaning of base tray and grills, pot strainer etc., servicing of fan motor including changing of bearings and greasing refixing the fan, frill and top cover including testing commissioning after reassembling complete all as specified and as directed by Engr-in-charge.

All as per item No.46 here-in-before but for 35 to 65 TR.

All as per item No.46 here-in-before but for 66 to 120 TR.

Material and labour for painting of cooling tower with two coats of approved synthetic enamel paint complete all as specified and as directed by Engr-in-charge.

Supply and fix in repair 3 KW strip heater suitable for AHU complete all as specified and as directed by Engr-in-charge.

Reinstallation, testing and comissioning of chilled water type central AC Plant of capacity 12 TR (12 TR working capacity) with all equipments and accessories and comprising the following complete all as specified and as directed by Engr-in-charge. Notes: (a) Testing of AC plants to be done as phase I test and phase II summer, monsoon, and winter tests as per P.S and handing over. (b) Including Warranty from OEM for 1 year from 24 hrs performance testing and completion. (c) Water cooled chiller unit factory assembled microprocessor controlled each 50% of full load capacity complete of and comprising following. (d) Two Nos scroll compressor hermatically sealed units using R-407C refrigerant gas with suction discharge shut off valves, automatic capacity control with thermostat and solenoid valves built in suction strainer, oil pump, hot gas muffler, heat wheel, oil pressure, safety switch etc., (e) Microprocessor based soft start panel with safety and operating controls, indicating lamps along with automatic operation and system protection. The safety devices consisting of condenser high pressure outlet switch, evaporator low pressure cut out switch lube oil low pressure cut out switch, digital display consisting of oil pressure condensing pressure evaporating pressure and lube oil thermo meter, indicating lights and lamps two include lubricating oil heater lamp, the system run condenser high pressure, motor overload, heater lamp and operating hours meter etc., to maintain the inside temperature 220 C + 30 C and relative humudity 55% + 5%

(f) Two Nos shell and tube type water cooled condenser MS shell integrally finned copper tubes complete with safety valve drain valve, connection of water inlet and outlet, connection of hot gas inlet and liquid outlet with valves, thermometer and purge valve. (g) Two Nos shell and tube type DX chiller with thermal insulation including refrigerant inlet and outlet connection with isolating valves, expansion valves water inlet and outlet valves, temperature and pressure gauges at water inlet and outlet, drain and vent stop valves. (h) Two Nos stands fabricated out of MS channel/ angle of suitable size for mounting compressor, motor, condenser and chiller. (j) Two set of nitro neoprene rubber antivibration ribbed pad with MS channel in foundation etc., (k) Necessary MS heavy duty refrigerant pipe for suction and discharge lines and copper pipe for liquid line complete with fitting valves etc.,

Material and labour for leak test of machines and filling up R407C gas complete all as specified and as directed by Engr-in-charge.

Supply and filling of compressor oil as recommended by OEM complete all as specified and as directed by Engr-in-charge.

Material and labour for descaling of condenser complete all as specified and as directed by Engr-in-charge.

Material and labour for PCC foundation of suitable size for chiller machine complete all as specified and as directed by Engr-in-charge.

Reinstallation and commissioning of FRP induced draft rectangular type counter flow cooling tower of capacity 20TR supported over hot dip galvanised steel structure, fitted with axial flow fan direct driven, PVC /polypropylene fills/ nozzels with maximum allowable temperature 50 degree centigrade, drift losses 0.005% of water circulation with suitable foundation and float valve suitable size, mounted on suitable size PCC 1:2:4 complete all as specified and as directed by Engr-in-charge.

Supply and fix for PVC two mounting layered, closed lid cylindrical shapes ISI marked water tank of 2000 ltrs capacity mounted on suitable stage PCC 1:2:4 complete all as specified and as directed by Engr-in-charge.

Reinstallation and commissioning of monoblock centrifugal pump set of capacity 02 HP, 8.7 to 4.3 LPS, 12m to 16m head for condenser cooling water circulation and suitable for three phase 50 cycle 450V AC supply and including suitable foundation of MS structure with antivibration rubber pads complete all as specified and as directed by Engr-in-charge.

Renstallation and Commissioning Monoblock centrifugal pump set of capacity 02 HP, 8.7 to 4.3 LPS, 22 to 26 Mtr head for Chilled water circulation & suitable for three phase, 50 cycle, 440V AC, supply and including suitable foundation of MS Structure with antivibration rubber pads all as specified Make:Beacon Model No.2DM4 .

Supply and fix for MS pipes as per IS-1239 for condenser water circulation of 50mm bore complete all as specified and as directed by Engr-in-charge.

Supply and fix for MS pipes 'C' class conforming to IS-3589 for chilled water circulation with insulation complete fittings and supports of 50mm dia complete all as specified and as directed by Engr-in-charge.

Supply and fix for GI pipe medium grade conforming to IS-1239 including all fittings for condenser water drain pipe of 25mm dia complete all as specified and as directed by Engr-in-charge.

Supply and fix for PVC chilled water make up tank 500 ltrs and thermally insulated with 50mm thick EPS quality sheet of suitable size having density not less than 65 Kg/Cum with protecting cover of 25 gauge aluminum sheet cladding and supporting pipe connections complete all as specified and as directed by Engr-in-charge.

Reinstallation and commissioning of Air Handling Unit (AHU) capacity 4000 CFM at 50mm TSP, sectionalised construction, factory made double skin floor mounted six row deep cooling coil all accessories controls etc and comprising the following complete all as specified and as directed by Engr-in-charge. (i) Cooling coils of copper tube with aluminum fins. (ii) Prefilter (iii) Blower for AHU with suitable motor, TEFC scroll case induction motor for operation of 415 volts 3 phase AC supply with 'V' belt and guard. (iv) Insulation of AHU as specified. (v) Including foundation of suitable size. Note: For satisfying the dehumidified air CFM concluded from heat load calculation the contractor is liable for the modification of AHU CFM.

Material and labour for earthing complete with GI earth plate electrode of size 600x600x6mm thick burried directly in ground (earth pit not less than 2.25m deep flow the ground level) with top edge of the plate not less than 1.5m below the normal ground level connected with GI strip 25x3mm by means of bolts and nuts, check nuts and washers of galvanised iron steel including necessary excavation and earth work in any type of soil, removing the surfplus soil to a distance not exc 50m, with and including PCC chamber in 1:2:4 type B1, (Using 20mm graded stone aggregate) having outer dimensions 600x600x600mm internal dimensions 300x300x300mm, MS angle iron frame made out of size 40x40x6mm thick duly painted with 2 core synthetic enamelled paint over one coat of red oxide zinc chrome primer hinged with including 10mm thick CI cover with handled, watering arrangement with funnel internally secured with wire mesh with 20mm dia medium grade pipe for watering 40mm dia light grade, GI pipe for lead protection from electrode to test point, panel, accesorries in and including alternate layers of charcoal dust and common salt all as shown in electrical Plate No 3 and connected and indicated including testing on completion complete all as specified and as directed by Engr-in-charge.

Material and labour for GI sheet 0.80mm thick (22 SWG) for making duct complete all as specified and as directed by Engr-in-charge.

Material and labour for GI sheet 0.63mm thick (24 SWG) for making duct complete all as specified and as directed by Engr-in-charge.

Material and labour for return air grill made of GI sheet 16 SWG complete all as specified and as directed by Engr-in-charge.

Supply and installation for acoustic lining 25mm thick resin bonded lead wool /fiber glass 200mm covered with 24 gauge perforated aluminum sheet over chicken wire mesh, covering the insulation with RP tissue, cover the insulation with 24G aluminum perforated sheet complete all as specified and as directed by Engr-in-charge.

Material and labour for duct insulation 25mm thick with resin bonded fibre glass wool roll of density 24Kg/cum with factory laminated aluminum vapor barrier complete all as specified and as directed by Engr-in-charge.

Supply and fix for air diffusers aluminum construction powder coated with dampers complete all as specified and as directed by Engr-in-charge.

Supply and fix for three way control valves with return air thermostat with insulation of 50mm bore complete all as specified and as directed by Engr-in-charge.

Supply and fix for CI butterfly valve 50mm bore complete all as specified and as directed by Engr-in-charge.

Supply and fix for 'Y' strainer CI 50mm bore complete all as specified and as directed by Engr-in-charge.

Supply and fix for fire damper made out of GI sheet 16 gauge complete all as specified and as directed by Engr-in-charge.

Supply and fix for pressure gauge 0-7 Kg/cm² complete all as specified and as directed by Engr-in-charge.

Supply and fix for temperature gauge (0-50C) complete all as specified and as directed by Engr-in-charge.

Supply and fix for NRV valve brass body size 50mm bore complete all as specified and as directed by Engr-in-charge.

Supply and lay 4 core 16 sqmm PVC insulated armoured and PVC sheathed with aluminium conductor heavy duty LT 1100 volts grade conforming to IS-1554 part-1 including and testing for chiller unit complete all as specified and as directed by Engr-in-charge.

All as per item No.80 here-in-before but 4 core 6 sqmm for AHU blower motor.

All as per item No.80 here-in-before but 3 core 4 sqmm for CT fan, condenser motor, chiller motor.

Supply and lay 2 core 1.5 sqmm PVC insulated armoured and PVC sheathed with copper conductor heavy duty LT 1100 volts grade conforming to IS-1554 part-1 including and testing for control wiring complete all as specified and as directed by Engr-in-charge.

All as per item No.83 here-in-before but 7 core 1.5 sqmm for control wiring.

All as per item No.83 here-in-before but 4 core 1.5 sqmm for control wiring.

All as per item No.83 here-in-before but 4 core 10 sqmm for heater.

Material and labour for 25x3mm GI earthing strip necessary bracing complete all as specified and as directed by Engr-in-charge.

Supply and fix for strip heater 3 KW complete all as specified and as directed by Engr-in-charge.

Supply and fix for humidistat for humidity control complete all as specified and as directed by Engr-in-charge.

Supply and fix for thermostat to maintain desire temprature complete all as specified and as directed by Engr-in-charge.

Material and labour for painting of complete AC plant equipments complete all as specified and as directed by Engr-in-charge.

somnath engineering corporation