REPAIR/ REPLACEMENT OF DEFECTIVE PARTS, OVERHAULING OF COMPRESSOR REWINDING OF AC PLNTS MOTORS, COOLING TOWERS, REPAIR TO SUPPLY/ RETURN DUCTS, AHU FILTERS OF AC PLANTS, ETC OF AC PLANTS AT TUNIR AREA AND OUTSIDE AREA AT NAVAL STATION KARANJA

Amount

Dismantling and removing old unserviceable compressor sealed unit of scroll type compressor carefully and supply, installation, testing new sealed compressor unit of capacity 12.5 TR Model No SZ185S4RC of Make Blue Star/ Danfoss or equivalent complete with all standard accessories as per existing model installed at AC plant complete all as specified and as directed by Engr-in-charge. Notes: (i) Sealed unit shall be purchased from authorised dealers/agents. (ii) Cost of labour, fixing and T&P shall be deemed to include in the quoted rate of this item. (iii) Unit rate quoted shall include for the necessary elelctrical check i.e checking of panel wiring to run the compressor smoothly. (iv) Before opening/ dismantling the compressor the freon gas to be taken in empty cylinder by the help Ice or as directed by Engr-in-charge.

Material and labour for rewinding of induction motor 2900 RPM, 3 phase, 50 Hz, 415 volt of compressor motor and AHU blower, chiller, condenser 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 and bolts etc., (iii) Loading, unloading and transporting motor and reinstalling in position and in alignment including electric connection 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 all as specified and directed. (iv) Replacement of 02 Nos of suitable size of ball bearing of existing size of the following type and capacity of induction motor:-

Induction Motor of Capacity 30 HP

Induction Motor of Capacity 15 HP

Induction Motor of Capacity 12.5 HP

Induction Motor of Capacity 10 HP

Induction Motor of Capacity 7.5 HP

Induction Motor of Capacity 5 HP

Induction Motor of Capacity 3 HP

Induction Motor of Capacity 2 HP

Supply and fix in replacement cooling tower fan assembly with low speed fan with noise level not exc 75 DBA made out of propeller type light weight solid/ hollow FRP rust resistant with statically and dynamically balanced blades suitable for 250 TR capacity AC plants complete all as specified and as directed by Engr-in-charge.

Supply and fix in replacement cooling tower fan assembly with low speed fan with noise level not exc 75 DBA made out of propeller type light weight solid/ hollow FRP rust resistant with statically and dynamically balanced blades suitable for 60 TR capacity AC plant complete all as specified and as directed by Engr-in-charge. Notes for Item No 3 and 4: (i) Fan speed shall not exc 60 MPS. Outlet velocity of air shall not be less than 610 mtrs/ min (ii) Fan shall be protected by a fan guard and bird screen of galvanised steel construction. (iii) G SS/ SS 304 fan guard shall be provided over the fan motor for protection against rain water.

Material and labour for laying, jointing, connecting and testing in replacement PVC insulated and sheathed under ground heavy duty wire or PVC strip armoured 1100 volt grade multistranded aluminium conductor cable in trenches/ cable tray of 3 core 6 sqmm complete all as specified and as directed by Engr-in-charge.

All as per item No.5 here-in-before but 3 core 10 sqmm.

All as per item No.5 here-in-before but 3 core 16 sqmm.

All as per item No.5 here-in-before but 3 core 25 sqmm.

All as per item No.5 here-in-before but 3 core 35 sqmm.

All as per item No.5 here-in-before but 3 core 50 sqmm.

Supply and fix for copper lugs of size 10 sqmm complete all as specified and as directed by Engr-in-charge.

Supply and fix for copper lugs of size 16 sqmm complete all as specified and as directed by Engr-in-charge.

Supply and fix for copper lugs of size 25 sqmm complete all as specified and as directed by Engr-in-charge.

Supply and fix for copper lugs of size 35 sqmm complete all as specified and as directed by Engr-in-charge.

Supply and fix for copper lugs of size 50 sqmm complete all as specified and as directed by Engr-in-charge.

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) 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

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 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.

Supply and fix in replacement pressure guage capacity of 7 Kg/cm2 0-300 PSI for AC plant complete all as specified and as directed by Engr-in-charge.

Supply and fix in replacement of power contactor 3 pole, type ML-1.5 with 2 NO + 2 NC aux contacts with standard coil voltage 415 volts, rating 25 Amp complete all as specified and as directed by Engr-in-charge.

Supply and fix in replacement of power contactor 3 pole, type ML-2 with 2 NO + 2 NC aux contacts with standard coil voltage 415 volts, rating 32 Amp complete all as specified and as directed by Engr-in-charge.

Supply and fix in replacement of power contactor 3 pole, type ML-3 with 2 NO + 2 NC aux contacts with standard coil voltage 415 volts, rating 40 Amp complete all as specified and as directed by Engr-in-charge.

Supply and fix in replacement bimetal overload relay type MN-02 of relay range, 4.5 to 7.5 Amp with single phasing protection complete all as specified and as directed by Engr-in-charge.

Supply and fix in replacement bimetal overload relay type MN-02 of relay range, 9 to 15 Amp with single phasing protection complete all as specified and as directed by Engr-in-charge.

Supply and fix in replacement bimetal overload relay type MN-02 of relay range, 14 to 23 Amp with single phasing protection complete all as specified and as directed by Engr-in-charge.

Supply and fix in replacement electronic timer 800 SQA, working voltage 240 V, 50 Hz complete all as specified and as directed by Engr-in-charge.

Supply and fix in replacement air break contactor Model No 3TS3500-0A with Auxiliary 3TX400--2A 1 NC 415 V, 50 Hz, AC complete all as specified and as directed by Engr-in-charge.

Supply and fix for MCB SP 5 to 32 Amp rating 240V, 10KA 'C' curve complete all as specified and as directed by Engr-in-charge.

Supply and fix for MCB SPN 32 Amp rating 240V, 10KA 'C' curve complete all as specified and as directed by Engr-in-charge.

Supply and fix for MCB SPN 40 to 63 Amp rating 240V, 10KA 'C' curve complete all as specified and as directed by Engr-in-charge.

Supply and fix for MCB TP 40 to 63 Amp 415V 10KA 'C' curve complete all as specified and as directed by Engr-in-charge.

Supply and fix for MCB TPN 16 to 32 Amp 415V 10KA 'C' curve complete all as specified and as directed by Engr-in-charge.

Supply and fix for MCB TPN 40 to 100 Amp 415V 10KA 'C' curve complete all as specified and as directed by Engr-in-charge.

Supply and fix in replacement MCCB 3 Pole, 415 V, fixed type, 25 to 100 Amps with breaking capacity 16 KA complete all as specified and as directed by Engr-in-charge.

Supply and fix in replacement MCCB 3 Pole, 415 V, fixed type, 25 to 400 Amps with breaking capacity 36 KA complete all as specified and as directed by Engr-in-charge.

Supply and fix in replacement MCCB 4 Pole, 415 V, adjustable type, 160 Amps with breaking capacity 36 KA complete all as specified and as directed by Engr-in-charge.

Supply and fix in replacement MCCB 4 Pole, 415 V, adjustable type, 400 Amps with breaking capacity 36 KA complete all as specified and as directed by Engr-in-charge.

Supply and fix in replacement power contactor 3 pole, type MNX 12, 1 NO + 1 NC aux contacts with standard coil voltage 240 volts, raring 30 Amp complete all as specified and as directed by Engr-in-charge.

Supply and fix in replacement power contactor 3 pole, type MNX 18, 1 NO + 1 NC aux contacts with standard coil voltage 240 volts, raring 30 Amp complete all as specified and as directed by Engr-in-charge.

Supply and fix in replacement power contactor 3 pole, type MNX 32, 1 NO + 1 NC aux contacts with standard coil voltage 240 volts, raring 30 Amp complete all as specified and as directed by Engr-in-charge.

Material and labour for painting of following pump sets with two coats of synthetic enamel paint complete all as specified and as directed by Engr-in-charge.

Condenser Pump upto 10 HP

Chilled water Pump upto 7.5 HP

Cooling tower including CT fan motor

Supply and fix in replacement 3 KW strip heater suitable for AHU 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 30-220 A

Micro VPD (Split) 360-500V AC

Supply and fix in replacement of microprocessor of compressor upto 60 TR complete all as specified and as directed by Engr-in-charge.

Supply and fix in replacement of microprocessor of compressor for 60 TR to 100 TR complete all as specified and as directed by Engr-in-charge.

Supply and fix in replacement of microprocessor of compressor for 100 TR to 250 TR complete all as specified and as directed by Engr-in-charge.

Supply and fix in replacement of Single phase preventor type SPP VSP3 3 phase, 415 Volts, 50 Hz AC complete all as specified and as directed by Engr-in-charge.

Supply and fix in replacement of CVT for chiller controller power supply 3 phase, 415 Volts, 50 Hz AC 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 repair of condenser pump/ chiler pump any type including replacement of impeller and bearings both sides, replacement of main shaft, outer body of the pump of following capacities complete all as specified and as directed by Engr-in-charge.

chiler/ condenser pump of Capacity 10 HP

chiler/ condenser pump of Capacity 7.5 HP

chiler/condenser pump of Capacity 5 HP

Supply and fix in replacement on-off push button with elements red /green /orange complete all as specified and as directed by Engr-in-charge.

Supply and fix in replacement toggle switch of 5 Amp capacity complete all as specified and as directed by Engr-in-charge.

Supply and fix in replacement indication lamp RYB-01 set complete all as specified and as directed by Engr-in-charge.

Supply and fix in replacement MS ERW tubing medium grade 80mm dia for condenser water circulation pipes complete all as specified and as directed by Engr-in-charge.

Supply and fix in replacement MS ERW tubing medium grade 100mm dia for condenser water circulation pipes complete all as specified and as directed by Engr-in-charge.

Material and labour for nitrogen leak test entire system of the AC plant of capacity upto 150 TR with nitrogen gas. If found any leakage or reduction in the scale of pressure shall located and arrest the leakage immediately by soldering or an appropriate measure are to be taken to top the leakage permanently complete all as specified and as directed by Engr-in-charge.

Supply and fix in replacement sprinkler assembly complete with header nozzles made out of galvanised iron suitable to fix in cooling towers of 60 TR capacity AC plants complete all as specified and as directed by Engr-in-charge.

Supply and fix in replacement sprinkler assembly complete with header nozzles made out of galvanised iron suitable to fix in cooling towers of 250 TR capacity AC plant complete all as specified and as directed by Engr-in-charge.

Supply and fix in replacement HRC fuse base suitable for cylindrical / DIN type fuse links 2 to 32 Amp complete all as specified and as directed by Engr-in-charge.

Supply and fix in replacement HRC fuse base suitable for cylindrical /DIN type fuse links 32 to 63 Amp complete all as specified and as directed by Engr-in-charge.

Supply and fix in replacement HRC fuse base suitable for bolted fuse links 2 to 32 Amp with connection both side cable and type HD 32 H complete all as specified and as directed by Engr-in-charge.

Supply and fix in replacement HRC fuse base suitable for bolted fuse links 35 to 63 Amp with connection both side cable and type HK 63 H complete all as specified and as directed by Engr-in-charge.

Supply and fix in replacement HRC fuse link cylindrical type fuse links 4-25 Amp complete all as specified and as directed by Engr-in-charge.

Supply and fix in replacement HRC fuse link cylindrical type fuse links 32 Amp complete all as specified and as directed by Engr-in-charge.

Supply and fix in replacement HRC fuse link cylindrical type fuse links 40 Amp complete all as specified and as directed by Engr-in-charge.

Supply and fix in replacement HRC fuse link cylindrical type fuse links 63 Amp complete all as specified and as directed by Engr-in-charge.

Supply and fix in replacement HRC fuse link bolted type fuse links 6 to 16 Amp complete all as specified and as directed by Engr-in-charge.

Supply and fix in replacement HRC fuse link bolted type fuse links 20 to 32 Amp complete all as specified and as directed by Engr-in-charge.

Supply and fix in replacement HRC fuse link bolted type fuse links 50 to 63 Amp complete all as specified and as directed by Engr-in-charge.

Dismantling the inlet and outlet connection of water pipe lines, wiremesh all-around the cooling tower, PVC fins, CT fan and motor and incomming connection of electric supply and other related items all as per site requirement complete all as specified and as directed by Engr-in-charge.

Cleaning the cooling tower by applying wire brush, washing powder and other solvent by removing the deposited impurities sush as silt, dust particles mud/ sand inside the dume and around the fins, cleaning of base tray and grills, pot stainer, main shaft etc., and other connected items, servicing of fan motor including changing of bearings and greasing refixing the fan, frill and top cover including testing commissioning after reassembling upto 35 TR complete all as specified and as directed by Engr-in-charge.

All as per item No. 71 here-in-before but for 35 TR to 65 TR.

All as per item No.71 here-in-before but for 66 TR to 250 TR.

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

Material and labour for descaling of complete condenser units for central/ package type AC plants of following capacities by means of adding descaling chemical solution (HCL) into the cooling tower sump as per requirements, and running the plant pump continuously till all the scale of pipes/ shell are removed including removing side covers of condenser and cleaning the water tubes by means of nylon brushes till the scaling is removed and re-fixing of covers including replacement of neoprene rubber gasket and refixing pipe connection etc., complete all as specified and as directed by Engr-in-charge.

Material and labour for leak test of machine 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.

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

Supply and lay for synthetic rubber insulated mat 2mm thick for electrical purpose as per IS15652-2006, suitable for electric shock safety of insulating mat of size 2x1m ISI marked complete all as specified and as directed by Engr-in-charge.

Supply and lay for synthetic rubber insulated mat 2.5mm thick for electrical purpose as per IS15652-2006, suitable for electric shock safety of insulating mat of size 2x1m ISI marked complete all as specified and as directed by Engr-in-charge.

Material and labour for earthing complete with copper earth plate electrode of size 600x600x6mm thick burried directly in ground (earth pit not less than 2.25m deep below ground level) with top edge of the plate not less than 1.5m below the normal ground level connected with copper strip 32x6mm by means of bolts, nuts, check nuts and washers of galvanished iron steel including necessary excavation and earth work in any type of soil, removing surplus soil to a distance not exc 50m, with and including PCC chamber in PCC (1:2:4), type B1, (Using 20mm graded stone aggregate), mild steel angle iron frame made out of MS angle iron of size 40x40x6mm thick duly painted with two coats of synthetic enamel paint over one coat of red oxide zinc chrome primer hinged with and including 6mm thick CI cover with handle, 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 in and including alternate layers of charcoal dust and common salt complete all as shown in electrical plate No 3 of SSR Part-I (2009) connected to earthing test point and indicated including testing on completion complete all as specified and as directed by Engr-in-charge.

Supply and fix for copper strip of size 32x6mm buried in ground and pass through duct or GI pipe and connected to another copper strip by means of nuts and bolts, washers complete all as specified and as directed by Engr-in-charge.

Supply and fix in replacement V belt of following sizes complete all as specified and as directed by Engr-in-charge.

V Belt A-62

V Belt A-71

V Belt A-79

V Belt B-56

V Belt B-63

V Belt B-72

V Belt B-84

Periodical and maintenance of under mentioned central AC plants comprising the various equipments as mentioned below as directed for DX type central AC plant of capacity 70 TR installed at Akber 5/6 Hanger AC plant for maintaining Temp 22 C + 2 C and humidity 65 + 5% in AC spaces comprising of mentioned plants equipments and accessories complete all as specified and as directed by Engr-in-charge.

Periodical and maintenance of under mentioned central AC plants comprising the various equipments as mentioned below as directed for Screw chiller make: Voltas central AC plants of capacity 50 TR and 48 TR installed at MRF RZ-61 (Bldg No 457) and MRF P-20 (Bldg No 445) respectively. AC plant for maintaining Temp 20 C + 2 C and humidity 65 + 5% in AC spaces comprising of mentioned plants equipments and accessories complete all as specified and as directed by Engr-in-charge.

Periodical and maintenance of under mentioned central AC plants comprising the various equipments as mentioned below as directed for Screw chiller make : Voltas, central AC plant of capacity 200 TR installed at Sea Eagle (Ahilyabai) AC plant for maintaining Temp 20 C + 2 C and humidity 65 + 5% in AC spaces comprising of mentioned plants equipments and accessories complete all as specified and as directed by Engr-in-charge.

Periodical and maintenance of under mentioned central AC plants comprising the various equipments as mentioned below as directed for DX type central AC plant of capacity 100 TR installed at Long Term AC plant for maintaining Temp 20 C + 2 C and humidity 65 + 5% in AC spaces comprising of mentioned plants equipments and accessories complete all as specified and as directed by Engr-in-charge.

Notes: The quoted rate for above plants described from Sl Item No. 85 to 88 shall be deemed to be included following:- Inspection services : (a) Inspecting the plant /system and carry out preventive maintenance as per the standard practice four times in a year. (b) Checking the refrigeration system, motor and starters and ensuring healthy condition of the plant. (c) Checking the system for any leaks and rectificationm of leaks if found. (d) Tracking set of reading and reporting the healthiness of the plant and suggesting improvements if any. (e) Checking the refrigeration control system for operation and adjusting the settings. (f) Checking the functioning of compressor and its accssories. (g) Cleaning the evaporator once a year if found necessary. (h) Lubricating the bearings of motors, and fans when found necessary. (j) Quarterly inspection of belts adjusting the tension. (k) Checking of the microprocessor controller for its proper functioning. (l) Attending to break calls. (m) Labour involving evecuation of refrigerant during replacement of controls and replacement of compressor. (n) Carrying out once in a year, testing of lubricant and water (chilled water system and water cooled condensing system only) samples.

(o) To carry out routine, periodical, preventive (weekly, monthly, quarterly, half yearly, yearly) breakdown maintenance as per attached formats and as directed by GE and Engr-in-Charge. (p) To attend the breakdown during day and night including holidays and putting the plant in operational condition with in the shortest period. The contractor shall keep all fast consuming spares in store to be made available by GE/ Engr-in-Charge at any one of the above installation. (q) Maintaining all the accessories such as electric panel. Interlocking wiring cables, pumps etc., and all assemblies such as chillers etc and sub assemblies such as AHU, tower etc functional in any situation round the clock for the period including holidays etc..,

somnath engineering corporation