81788 PROVN OF REPAIR, SERVICING AND PERIODICAL MAINT OF PACKAGE TYPE AND CENTRAL AC PLANTS AT NDA UNDER GE NDA KHADAKWASLA

Amount

Dismantling of compressor of Central type Air conditioner of capacity upto 40TR installed at ATT Plant (Make : ACCEL, Model : SMC 4 100S) and over hauling the same by replacing unserviceable / worn out parts including necessory machine work to the crank shaft, discharge valve plate etc for proper repair.Servicing of Oil pump by replacing oil pump repair kit. Reassembling the compressor unit with existing serviceable parts and new parts given here in after(as supply and fix only), rectifying other deffects if any, Charging of Refrigerant gas (R-22) and Compressor Oil upto the required level to achive desired cooling effect, Connecting the compressor with the lines and testing commissioning complete all as directed by Engr- in Charge.

Note fore Ser. Item No. 1.00 above :- i) Parts required for replacement should be compatible for the existing AC Plant and shall be measured and paid seperately under respective items ii) Unit rate includes retrieving - after Pumping down - of existing refrigerant & drain off Compressor oil from the plant, preserve carefully and re-use the same after overhauling of Compressor. iii) Additional quantity of Refrigerant Gas & compressor oil required for the job for satisfactory running of plant shall be measured and paid seperately under respective items iv) Any Minor repair or small parts (costing up to Rs 1000/-) those are not covered in item above shall to be borne by the contractor and rate for the same shall deemed to be included in the quoted unit rate.

Cleaning of shell and tube type condenser of Central type Air conditioner 40 TR Capacity (Installed at ATT Plant ) with dilute hydrochloric acid and brushing in to internal portion of condenser including replacement of gasket, testing after cleaning complete all as directed by Engineer - in - Charge.

Supply and fix in replacement of Piston assy cast Aluminium including Piston rings, scraper rings & Seeger rings complete of compressor complete all as specified and as directed.

Supply and fix in replacement of inlet Valve set suitable for exisitng liquid pipe line complete all as specified and as directed.

Supply and fix in replacement of springs for inlet and outlet valve suitable for existing type complete all as specified and as directed.

Supply and fix in replacement of Hygrometer temperature indicator suitable for existing type complete all as specified and as directed.

Supply and fix in replacement of Piston sleeves of compressor complete all as specified and as directed.

Supply and fix in replacement of Plunger for unloading mechanism of compressor complete all as specified and as directed.

Supply and fix in replacement of Piston pin of compressor complete all as specified and as directed.

Supply and fix in replacement of bush for Piston pin of compressor complete all as specified and as directed.

Supply and fix in replacement of Half section of bearing of compressor complete all as specified and as directed.

Supply and fix in replacement of Suction and discharge reed with valve plate of compressor complete all as specified and as directed.

Supply and fix in replacement of set of shaft seal complete of compressor complete all as specified and as directed.

Supply and fix in replacement of Gasket set complete of compressor complete all as specified and as directed.

Supply and fix in replacement of oil heater complete of compressor complete all as specified and as directed.

Supply and fix in replacement of oil pump repair kit complete of compressor complete all as specified and as directed.

Supply and fix in replacement of connecting rod of compressor complete all as specified and as directed.

M&L for Refrigerant Gas Leakage Testing with Nitrogen Gas Leak test including all equipment and necessary brazing and replacement arrengement for arresting leakage and Charging the required quantity of similar Gas as per existing refrigerant and reconfirmation of leakage removal for various cooling appliences at different places all as directed.

Supply and fill compressor oil of suitable grade POE complete all as specified and as directed.

Taking out existing unserviceable 'V' belt of compressor and supply and fix in replacement new 'V' belt complete all as specified and as directed.

Taking out existing unserviceable Pressure control device and supply and fix in replacement new Pressure control device(High pressure cut off with indicator) type MP-5 complete all as specified and as directed.

Taking out existing unserviceable Pressure control device and supply and fix in replacement new Pressure control device (low pressure cut off with indicator) type MP-1, complete all as specified and as directed.

Taking out existing unserviceable Pressure control device and supply and fix in replacement new Pressure control device(High pressure cut off with indicator) type MP-15 complete all as specified and as directed.

Taking out existing unserviceable Oil Pressure control device and supply and fix in replacement new Oil Pressure control device (Oil pressure cut off with indicator) type MP-35 complete all as specified and as directed.

Taking out existing unserviceable Oil Pressure control device and supply and fix in replacement new Oil Pressure control device (Oil pressure cut off with indicator) type MP-55 complete all as specified and as directed.

Taking out existing unserviceable Loading/unloading solenoid Valve three way 1/4BSP, 22 bar pressure, 100 degree C, 230 Volt and supply and fix and fix in repairs new Loading/unpoading soloniod Valve three way 1/4BSP, 22 bar pressure, 100 degree C, 230 Volt complete all as specified and as directed.

Taking out existing unserviceable High Pressure gauge and supply and fix in replacement new high Pressure gauge 0-25 Kg/cm square as per existing size complete all as specified and as directed.

Taking out existing unserviceable Low Pressure gauge and supply and fix in replacement new Low Pressure compound gauge 0-16/0-(-760) Kg/cm square suitable for R-22 as per existing size complete all as specified and as directed.

Taking out existing unserviceable monometer gauge and supply and fix in replacement new Monometer water suction gauge 0-10.6 Kg/cm square as per existing size complete all as specified and as directed.

Taking out existing unserviceable monometer gauge and supply and fix in replacment new Monometer water Discharge gauge 0-21 Kg/cm square as per existing size complete all as specified and as directed.

Taking out existing unserviceable water pressure switch and supply and fix in replacement new water pressure switch (IPS) for oil air water stem as per existing size complete all as specified and as directed.

Taking out existing unserviceable liquid solenoid valve and supply and fix in replacement new liquid solenoid valve/pilot solenoid valve MAG-2, 208-240V, 50-60 Cy, 15W as per existing size complete all as specified and as directed.

Taking out existing unserviceable filter dryer 1/4 inch outer thread, C-032F and supply and fix in replacement new filter dryer 1/4 inch outer thread, C-032F as per existing size complete all as specified and as directed.

Dismantiling carefully all water connections, decoping of pumps from electric motor taking out from foundation and transporting pump body to workshop for necessary machining works as directed and reqd and reinstalling the pump to its original position and commissioning etc instaled at ATT Plant for different capacity complete all as specified and as directed.

Supply and fix in replacement coupling made of MS cast block/ Rubber Muff Coupling with suitable accessories for existing pump & motor of make Kirloskar model suitable for 15HP/10 HP including nut, bolts & rubber bushings etc complete all as specified and as directed.

Repair and rewinding of electric induction motor by using super enamelled copper wire (Class-F) as per existing gauge, heating and varnishing complete. The repair work involves taking out burntout winding coiles from stator, cleaning of slots throughly , removing all dirt grease an other unwanted particle, replacmement of UNSV parts where reqd (as directed) capacity of motor 20/15/10 HP complete all as direced by Engr-in -charge NOTE : (i) Unit rate is deemed to be included for taking out motor from its position, shifting of motor from pump house to workshop, getting back to plant house, reinstalling at site, connecting up, couple and aligning with the pump and testing complete, retrieved winding wire will be the contractor's property and necessary credit amount is deemed to be included in the quoted rate, hence no credit has been considered in credit schedule. (ii) Spare parts other than rewinding job required for replacement shall be measured and paid separately as supply and fix only.

Dismantling/opening the pump part by part without damaging any other parts, descaling and cleaning of all parts for inspection and finding serviceability/ unserviceability of the parts and carefully assembling of pumps by using existing serviceable parts including replacement of PTFE gasket packing greasing all bearings, bushing, etc and replacement of unserviceable parts as directed installed at ATT Plant 10/15/20 HP (Cooling water pump/ Blower motor of AC plant), thoroughly, complete refix at their existing position reinstall the pumpr at existing position, complete all electric connections and testing complete all as specified and as directed.

Preventive maintenance of AC, 3 Phase induction motor of capacity 20/15 HP by dismanteling the motor completely without damaging any parts and applying air dry insulating varnish, of appropriate grade, cleaning bearing refix at their existing position with bearing grease, checking terminals and thimbles tighting the all terminal joints replace terminal plates where necessary/reinstall the motor at existing position, connecting electric connections and testing complete all as directed by Engr-in-Charge.

Preventive maintenance of AC, 3 Phase induction motor of capacity 7.5/10 HP by dismanteling the motor completely without damaging any parts and applying air dry insulating varnish, of appropriate grade, cleaning bearing refix at their existing position with bearing grease, checking terminals and thimbles tighting the all terminal joints replace terminal plates where necessary/reinstall the motor at existing position, connecting electric connections and testing complete all as directed by Engr-in-Charge.

Taking out existing burnt contactor from panel and supply and fix in replacement new connecting 3 Pole power contactor, 415 Volt, AC 3 Phase, AC3 rating 80 Amps, AC 3 Phase, AC1 rating 100 Amps, with 400/230 Volt coil, (as per existing) Conforms to IS / IEC 60947-4-1 & IEC 60947-4-1 complete all as specified and as directed.

Taking out existing burnt contactor from panel and supply and fix in replacement new connecting 3 Pole power contactor, 415 Volt, AC 3 Phase, AC3 rating 40 Amps, AC 3 Phase, AC1 rating 55 Amps, with 400/230 Volt coil, (as per existing) Conforms to IS / IEC 60947-4-1 & IEC 60947-4-1 complete all as specified and as directed.

Taking out existing burnt contactor from panel and supply and fix in replacement new connecting 3 Pole power contactor, 415 Volt, AC 3 Phase,AC3 rating 25 Amps, AC 3 Phase, AC1 rating 45 Amps, with 400/230 Volt coil, (as per existing) Conforms to IS / IEC 60947-4-1 & IEC 60947-4-1 complete all as specified and as directed.

Taking out defective burnt contactor from panel and supply and fix in replacement new connecting 3 Pole power contactor, 415 Volt, AC 3 Phase, AC3 rating 18 Amps AC1 rating 20 to 32 Amps, with 400/230 Volt coil, (as per existing) Conforms to IS / IEC 60947-4-1 & IEC 60947-4-1 complete all as specified and as directed. (Note for Ser. No. 40.00 to 43.00 above : Power contactor to be provided by Contractor shall be compatible / suitable for existing panel)

Taking out defective Thermal over load relay and supply and fix in replacement new relay type AUR1 complete all as specified and as directed. (Note : Thermal Over load relay to be provided by Contractor shall be compatible / suitable for existing panel)

Taking out defective burnt out MCCB 200A, 3 Pole and supply and fix in replacement new MCCB 200A, 3 Pole, 36kA, Conforms to IS/IEC 60947-2 & IEC 60947-2 complete all as specified and as directed.

Taking out defective burnt out MCCB 310A, 4 Pole and supply and fix in replacement new MCCB 310A, 4 Pole, 36 kA Conforms to IS/IEC 60947-2 & IEC 60947-2 complete all as specified and as directed. (Note for Ser. Item No. 45.00 & 46.00 above : MCCB to be provided by Contractor shall be compatible / suitable for existing panel)

Taking out existing burnt Add on auxilary contact block from panel and supply and fix in replacement new connecting Add on auxilary contact block with 2 NO + 2NC, front mounted ,415 Volt complete all as specified and as directed. (Note : Add on Auxillary contact block to be provided by Contractor shall be compatible / suitable for existing panel)

Taking out existing burnt timer from panel and supply and fix in replacement new Timer 0-30/60Sec pluse time 50-100 msec, 800 SD 2-230 selce,415 Volt, reqd for star delta complete all as specified and as directed. (Note : New Timer to be provided by Contractor shall be compatible / suitable for existing panel)

Supply and fix in replacment of of Miniature circuit breaker triple pole 415 volt, 25-63 Amps having rupturing capacity 10kA 'C' Series complete all as specified and as directed.

M&L for servicing the Air handling units for compressor of capacity 40 TR, with and including cleaning complete units, sheet metal parts, blowing out the dust, chemical cleaning by spraying the organic based scale removing agent Vaniklin at the appropriate ratio till removal of complete dust & scale deposits in the fin area of evaporator coil, flushing through for proper air flow across the coil, cleaning of expansion valve; greasing of blower motor, checking of electrical connection, cleaning of air filters, prefilters & fine filters box type with washable nylon filters media having 90% efficiency to control dust particles up to 10 microns fitted in aluminum framed with both side wire mesh of size 610x610x50mm of class EU-4 and for fine filters 99% efficiency to control dust particles up to 10 microns 610x610x500 mm EU-7 as per sample suitable for 40 TR AHU plant, greasing of blower motor, replacement of unserviceable bearings, water drain lines, renewal of rusted sheet metal screws, and testing & commissioning the unit all as specified and as directed by Engineer-in-Charge.

Material and Labour for cleaning and servicing of Cooling Tower at ATT (100 TR) including changing of defective deflectors, Sprinklers, Fan Blade, Rotor etc. complete all as specified and as directed.

Supply & install PVC Corrugated honey comb type of size each 600mm x 300mm x 150mm Cooling Tower Fins/ Fills in Cooling towers of 150.0 TR and 100.0 TR complete all as specified and as directed.

Material and Labour for cleaning and servicing of Package Type AC of 8.50 TR - Cleaning the Indoor and Out Door units, Checking for any leakges in the gas copper pipe lines and charging with refrigeration gas as required after rectification of faults/ Leakages complete all as specified and as directed.

Supply and fix in replacement of connecting Integrated circuit board with all electronic components suitable for 8.5 TR capacity Carrier Pakage type Air conditioner complete all as specified and as directed.

Supply and fix in replacement of connecting high pressure cut off valve 275 lbs suitable for 8.5TR capacity package AC of make Carrier complete all as specified and as directed.

Supply and fix in replacement of low pressure cut off valve 25 lbs suitable for 8.5TR capacity package AC of make Carrier complete all as specified and as directed.

Supply and fix in replacement of SPPR Circuit board suitable for 8.5TR capacity Package type AC of make : Carrier complete all as specified and as directed.

Supply and fix in replacement electronic sensor unit (PCB) suitable for 8.5 TR Package type AC complete all as specified and as directed.

Supply and fix, testing and commissioning of factory made new scroll/OEM recommended compressor suitable to fixed with 8.5TR capacity air cooled package AC of make Carrier complete all as specified and as directed.

Supply and fix 10A Digital thermostat of dual mode, Temperature Regulating device of range from -50 degrees to 999 degree Centigrade of K type thermocouple,and alarm mode type required if it exceeds the set temperature value complete all as specified and as directed.

Material & Labour in charging refrigerant gas R-22 to AC Plant Compressor equipments complete all as directed by Engineer-in-charge.

Supply and fix in replacement of Pre-filter made up of GI sheet frame size 65x 25cm with Nylon wire mesh 10 Micron grade with efficiency more than 90% suitable of AHU of 2x40 TR Cap Central AC Plant complete all as specified and as directed.

Material and Labour in repair Ducting (Supply and Return) : Ducting made out of GI sheet with proper gasketing, supports, Consumables rods, incl all accessories such as Corner, Cleat, Carriage bolt, Gasket etc and fabricated as per standards. All flange joints shall be sealed with RTV Sealent to make it air tight. As per SMACNA Standard along with 25 mm accoustic insulation inside the duct :-

22 Gauge

20 Gauge

Material and Labour for Duct insulation with resin bonded fibre glass wool roll of density 24 kg/Cum, with factory laminated aluminium vapour barrier, thickness of insulation 25 mm as specified and including the following:- (a) Cleaning the duct surface (to be insulated) by scrapping carefully with wire brush etc. to make the surface completely free of millscale, dirt, dust, grease and other foreign materials, taking special care so that all duct joints are sealed against any leakage. (b) Applying rubber based adhesive CPRX compound. (c) Sealing of all longitudinal joints and circular overlaps with and including Aluminium cladding with 26 G sheet with and including Aluminium foil tape 50 mm wide, to make the insulation leakproof.

Servicing & maintenance (as and when directed) of Chilled water storage unit outer and inner side cleaning of condensing unit/all filters, dryers complete with vaccum cleaner, soap water, caustic soda, colin etc of capacity 4.5 HP of any make and any type in situ including, leak testing, brazing the suction / discharge tubes checking electric connection from DBs to machine , sensor unit/cooling effect of airconditioner etc any time during period of the contract for proper functioning complete all as specified and as directed.

Taking down burnt compressor from chilled water plant and supply and fix in replacement, install connecting and testing of hermetically sealed compressure of capacity 4.5 HP, suitable for R-22 refrigerant, AC 3 phase, 415 volt, 50 Hz, having capacity of cooling 4 C suitable for chilled water plant installed at cadet mess complete all as specified and as directed. (Note : Sample / Make shall be got approved from GE prior procurement.)

Taking down burnt fan motor from Water chiller plant and supply and fix in replacement new Fan Motor with blade, 415 V, 50 Hz, Three Phase suitable for chilled water plant installed at cadet Mess complete all specified and directed.

Taking down burnt chiller tank Automatic water level controller with float controller and motor, Single phase, 240 V, 50 Hz with delay (ON-OFF) - 0.1 sec to 10 sec and indicator with three float level sensor probe from Water chiller plant and supply and fix in replacement new chiller tank water level controller with motor along with three float level sensor probe as per sample/ site requirement suitable for chilled water plant installed at cadet Mess complete all specified and directed.

Supply and fix in replacement of float valve 40mm dia high Pressure with Polythene float and flynut complete screwed for iron pipe or brass ferrule, rod of suitable length PVC ball with all connecting items as in repair complete suitable for chilled water plant installed at cadet Mess complete all specified and as directed.

Supply and fix in replacement of solenoid valve- Type HM2 suitable for chilled water plant installed at cadet Mess complete all specified and as directed.

Supply and fix in replacement of relay -Type LR1-D12316 suitable for chilled water plant installed at cadet Mess complete all specified and as directed.

Supply and fix in replacement of temperature indicator sub-O SZ 7510P suitable for chilled water plant installed at cadet Mess complete all specified and as directed.

Supply and fix in replacement of temperature indicator sub-T-72 suitable for chilled water plant installed at cadet Mess complete all as specified and as directed.

Supply and fix in replacement of relay MNX-12 suitable for chilled water plant installed at cadet Mess complete all as specified and as directed.

Supply and fix in replacement of relay MNX-A18 suitable for chilled water plant installed at cadet Mess complete all as specified and as directed.

Material and labour for earthing complete with 60cm x 60cm x 6mm thick GI plate electrode buried in ground vertically not less than 2.25mtrs deep below ground level with top edge of the plate not less than 1.5mtrs below ground level with GI strip of size 32 x 6mm as earthing lead with bolts, nuts, checknuts and washers of galvanised iron or steel all as shown in Electrical plate No. 3 connected to earthing test point all as specified including testing on completion including necessary excavation and earth work (in any of strata) providing charcoal dust, salt mixed with fine sand in continuous layers, PCC (1:3:6 ) type C1 in chamber, Precast 50 mm thick in cement (1: 2:4) type B.1 with CI frame with cover, 20mm dia bore light grade GI watering pipe furnel etc fixing of GI Pipe 40 mm bore protection for earthing strip from earth pit to test point complete & making connection all as directed. NOTE: (i) Item includes the cost of 7.5 metre GI pipe for protection of earth lead. Any additional length shall be adjusted through deviation order. (ii) Item includes the cost of 7.5 metre GI earth lead. Any additional length shall be adjusted through deviation order.

GRID SYSTEMS (BID ID -3157986)

SUNIT TRADING CORPORATION (BID ID -3159196)