REPAIR MAINT OF PACKAGE TYPE AC CENTRAL AC PLANT AND OTHER CONNECTED ITEMS AT 8 FEBSU AF STATION AWANTIPUR

Amount

Taking down of U/S Commercial scroll sealed compressor Model NP SZ185S4RC from the location by OEM only. Remove pressure from both the high and low side before cutting out the compressor copper pipes by tubing cutter complete all as specified and directed.

Material and labour for commissioning, testing of new commercial scroll sealed compressor Model No SZ185S4RC suitable for 26 TR central type water chiller plant, max operating 35 Ampere LR 175A, suction pressure varying from 25 bar to 31.9 bar TS max varries from 54 degree C to 65 degree C from LP side to HP side & TS min varries from -35 degree C to -35 degree C from LP side to HP side refrigeration water chiller type, refrigerant R 407C, lubricant oil type mineral oil, P.O.E. 160 SZ. complete including necessary brazing and leak test complete all as specified and as directed by Engr-in-Charge. Note: Supply & installation to be performed by OEM of existing make only. Make-Danfoss as approved by GE whose design shall be final for make.

Material and labour for filter dryer strainer suitable for central AC plant of various capacities for installation in suction/chiller/liquid line. Make- Danfoss

Material and labour for cleaning/servicing of cooling tower by using of chemical, natural draught type/FRP type of the following capacities central AC plant including removing of existing choked fins of 50 TR cooling tower cap and S&F of new fins of cooling tower for AC plant including replacement of Wire mess protector jali, cleaning of water tank, cleaning of nozzels (brass/PVC), including replacement unsv nozzels all as specified and directed.

All as per srl item No 4.00 here-in-above but for 20 TR capacity cooling tower.

Supply and fixing for 4 way sprinker assembly compatible for existing make of cooling tower with bearing of suitable size and S&F GI tubing (4 piece in each head ) of size 25 mm dia and 3 ft length of cooling tower of capacity 50/30/20 TR of suitable size all as specified and directed.

Material and labour for leak testing of AHU unit cooling coil of package unit (10X3) TR capacity after pumping down the complete system, isolating the cooling coil from both ends and charging the nitrogen gas for pressure leak test, after detecting leak point, release the nitrogen gas, repairing the leak point by means of soldering/brazing and connecting the cooling coil with system, vacuumised the complete system and charge the refrigerant gas as per required quantity and testing upto satisfactory cooling performance of the plant as per desired condition.

Material and labour for carry out the descaling of shells and tubes water cooled type condenser by disconnecting the inlet and out water connections and providing of dummy to the inlet and outlet and descaling the condenser by circulating the circulated descaling agent R-111 or equivalent chemical or organic compound at the proper ratio circulated chemical till remove complete scale deposited inside the copper tubes, and opening the both end cover by the condenser brushing the copper tubes with appropriate size nylon brush remove complete scale and flushing and boxing up the both end covers connecting up the water inlet & outlet connections including renewal by damaged rubber gaskets and leak testing the joints for water leakage for the capacity following TR shell and tube condensers all as specified and as directed by Engineer-in-charge. Note: de-scaling operation to be done by OEM only. (a) Condenser unit of capacity 26 TR of WSA Make: denfoss/voltas

(b) Condenser unit of capacity 10 TR of 3005 sqn & I level Make: bluestar/voltas

Material and labour for disconnecting /dismantling (electrically & Mechanically) the 3 phase 440 VAC electrical motor of following capacity and transport to work shop opening the motor end cover taking out rotor, taking out burnt stator winding, cleaning the stator and rewinding the motor stator with appropriate guage and turns of synthetically enamelled copper wire using proper insulating material (F- class) varnishing with class I varnish, heating/ baking, cleaning and greasing to bearings, cleaning the rotor, reassembling the motor completely and brought at site including replacement of foolowing items , fixing it at its original location with proper alignment connect and testing completely all as specified and directed. (a) Replacement of ball bearing. Make: SKF-02 Nos (b) Replacement of bush (c) Replacement of cooling fan - 01 Nos. (a) 20 HP

Material and labour for cleaning/servicing of hot water generator of 3X26 TR capacity AC plant by pressure air method with using air blower and opening the hot water generator carefully , taking out & replacement of old unserviceable heating element, and applying one coat of synthetic enamelled paint ,all as specired and directed. Note:- heating element changed measured and paid separately under respective item of section A as supply only.

Taking out carefully detoriated GI sheet duct from its existing location and supply, assembly and erection of GI sheet with TDF flange rectangular/square duct made out of 'L' shaped hollow profile, duly factory boxed, incl all accessories such as Corner, Cleat, Carriage bolt, Gasket and appropriate sealant on longitudinal joins etc. complete of size 22 Guage to match with existing duct complete all as specified and directed.

Taking down old detoriated duct insulation and 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 50 mm thick including the following:- (i)cleaning the duct surface (to be insulated) by scrapping carefully with wire brush etc, to make the surface completely free of miliscale, dirt, dust, grease and other foreign materials, taking special care so that all duct joints are sealed against any leakage. (ii) applying rubber based adhesive CPRX compound. (iii) sealing of all longitudinal joints and circular overlaps with and including aluminium foil tape 50 mm wide, to make the insulation leak proof. (iv) securing the insluation with and including mechanically fastened nylon/steel straps of size 12 mm/50mm at maximum intervals of 1.2 mtr.

Supply only of LT insulation mat of 1metreX2metreX10 mm size all as specified

Supply and fixing in replacement for digital AC voltmeter panel mounting type , 3 digit display , input voltage range 0-500 volts all as specified and directed.

Supply and fixing in replacement for digital AC Ammeter panel mounting type, 3 digit display of range 0-200µA all as specified and directed.

Supply and fixing in replacement for compact LED indication lamp of colour Red/Yellow/Blue all as specified and directed. NOTE: 3 Nos of lamps of all three colours considered as one Unit and priced as one unit only.

Material and labour for cleaning of Y type strainer of size 65 mm by opening of all nut bolts and removing filter under strainer cleaning the accumulated mud, cooling tower of any capacity, choked nozzles, valves etc. Complete all as specified and directed by Engr-in-Charge

Material and labour for solenoid pilot control valve coil assembly, 11 watt, 230 volt AC, type 6, size 2, as per OEM and all as spefied & directed.

Material and labour for HP/LP pressure cut off switch MP - 15 suitable for working on R-407C gas complete with flare nut all as specified and directed.

Material and labour for LP/HP pressure guage, dial size 4" dia of rating 30 to 150 PSI suitable for working on R - 407C gas with flare nut all as specified and directed.

Material and labour for U shape type high pressure guage dial size 4"dia bottom mount dual scale of rating 0-150 kg/cm² suitable for working on R - 407C gas with flare nut complete all as specified and directed.

Material and labour for installation of temprature guage vertical mounted type with nuts of suitable size in various lines , of rating -20 to 50 degree celcius with accuracy of +/- 1 degree celcius all as specified and directed.

Material and labour for oil differential pressure cut off switch, MP - 55, suitable for working on R - 407C gas with flare nut. Make: denfoss

Material and labour for differential pressure switch as per existing type IPSD50 suitable complete all as specified and as directed. Make:indfoss

Material and labour for expansion valve TCBE working on R22/R407C of suitable flare size including brazing , welding work suitable for package AC unit. Make: Denfoss

Material and labour for thermostatic expansion valve of suitable flare size including brazing , welding work of model HVE 20, CP 100 ,all as specified and directed by engineer in charge. Make: denfoss

Material and labour for replacement of copper tubing, confirming to relevant IS of following sizes. (a) 5/8'' flare size.

(b) 1/2" flare size.

(c) 3/8" flare size.

(d) 1/4" flare size

Supply and fixing for MCCB , 415 V, fixed type , ics = 100% of icu,16 KA, 3 Pole 100 Amps. Make: Legrand/L&T/Havells/ABB

Supply and fixing for MCCB , 415 V, Adjustable type , ics = 100% of icu ,36 KA, 3 Pole 250 Amps. Make: Legrand/L&T/Havells/ABB

Supply and fixing for 415V, 10KA 'C' curve MCB Triple pole (TP) of capacity 25 to 63 Amp in the MCB DB complete with connection testing and commissioning all as specified and directed. Make: Legrand/L&T/Havells/ABB

Supply and fixing for 415V, 10KA 'C' curve MCB Triple pole & neutral of capacity 40 to 100 Amp in the MCB DB complete with connection testing and commissioning all as specified and directed. Make: Legrand/L&T/Havells/ABB

Supply and fixing for 240V, 10KA 'C' curve MCB single pole & neutral of capacity 40 to 63 Amp in the MCB DB complete with connection testing and commissioning all as specified and directed. Make: Legrand/L&T/Havells/ABB

Supply and fixing in replacement 240V, 10KA 'C' curve MCB single pole of capacity 6 to 32 Amp in the MCB DB complete with connection testing and commissioning all as specified and directed. Make: Legrand/L&T/Havells/ABB

Supply and fixing in replacement Power contactor 3 pole Type MNX25 AC 3 rating 25 A with auxilary contact 2NO + 2NC, Make- L&T/siemens

Supply and fixing in replacement Power contactor 3 pole Type MNX 18 AC 3 rating 18 A with auxiliary contact 1 NO + 1 NC , Make- L&T/siemens

Material and labour for three pole contactor model MNX9 with coil voltage 415volt AC. Make : L&T/siemens

Material and labour for three pole contactor model ML 4 with coil voltage 415volt AC. Make : L&T/siemens

Material and labour for three pole contactor model ML 3 with coil voltage 415volt AC. Make : L&T/siemens

Material and labour for three pole contactor model ML 2 with coil voltage 415volt AC. Make : L&T/siemens

Supply and fixing for thermal overload relay range 10 - 14 amps all as specified and directed. Make:-L&T/siemens

Material and labour for single phase preventer model VSP - 1. Make : Minilec or equivalent model.

Material and labour for drain valve of size 0.5 inch , for water drain purpose in water distribution line of HVAC plant .

Material and labour for senser cable , 4 core copper conductor cable , 5 amps , 50 Hz, of size 7/36 guage all as specified and directed

Supply only PVC electrical insulation tape of size 1.8 cm wide and 6.5 metre long, complete all as specified and directed.

Material and labour for painting of AC Plant as per existing colour including Compressor, condenser, motor, chiller plant, AHU, cooling tower including base and all pipe lines & connected valve etc complete all as specified and directed by Engr-in-Charge for the following plants:- Make of Paint-Asian/Indigo) (a) AC plant of capacity 3x26 TR-Plant for WSA

(b) AC plant of capacity 3x10 TR-Plant for 3005 sqn & I LEVEL

Supply and top up compressor oil N-68, Sheetal. In sealed pack .

Supply and top up of regrigerant gas R - 407C in manufacturer sealed cylinder.

Supply and fixing of heating element of capacity 6 KW 2 feet push type suitable for 63 KW hot water Generator complete all as specified and directed.

Supply & fixing for Air filter of suitable size for AHU unit of capacity 50 TR situated at WSA complete All as directed by Engr-in-charge.

Material and labour in replacement Duct filter with ss material filter media capacity shall capable 5 microns as per existing, suitable for AC plant of capacity 26X3 TR, 10X3 TR package units as per site requirement. Complete all as specified and directed by Engr-in-Charge

Material and labour for taking down the corrorded and unserviceable butterfly valves of size 40/50/65/80 mm and its counter flanges, nut and bolts from the exisiting position and S & F butterfly valve with counter flanges, nut and bolts etc including welding and testing the leaks.

Supply and fixing for strip heaters 240 volts with thermostat, 3 KW, cat part no DTA (TH) Heaters 1025 Make Daspass or equivalent, complete all as specified and directed.

Supply and fixing for Rotational moulded polyethylene water storage tanks of 500 Ltr Capacity (cylindrical vertical with closed top) hoisted and fixed in position including taking down of old water storage tank with connected items complete all as specified and directed

Supply & fixing of ball brass valves of size 20 mm, high pressure, with polyethilyne float and flynut complete, screwed for iron pipe or brass ferrule and fixed complete all as specified and directed.

Supply and fixing of Gun metal globe or gate valves (ISI-marked) with iron wheel head, screwed both ends for iron pipe 20mm bore and fixed, all as specified and directed.

Supply and laying mild steel galvanised iron water tubing of size 20 mm bore with screwed & socket joints, medium grade, galvanised, with all fittings, such as sockets, bends, elbows, unions, tees, diminishing pieces etc. laid in trenches in old existing or new routes or under roads including taking down of old water tubing of same size, complete , all as specified and directed.

Supply and laying mild steel galvanised iron water tubing, 20 mm bore, screwed & socket joints, medium grade, with all fittings, such as sockets, bends, elbows, unions, tees, diminishing pieces etc. fixed to wall upto 12 metre height and ceiling or laid in trenches/under floors including taking down of old water tubing of same size, complete all as specified and directed.

Supply and laying mild steel galvanised iron water tubing, 25 mm bore, with screwed & socket joints, medium grade, all fittings, such as sockets, bends, elbows, unions, tees, diminishing pieces etc. fixed to wall upto 12 metre height and ceiling or laid in trenches/under floors including taking down of old water tubing of same size , complete all as specified and directed.

Supply and laying mild steel galvanised iron water tubing of 100 mm dia bore with screwed & socket joints, medium grade, galvanised, with all fittings, such as sockets, bends, elbows, unions, tees, diminishing pieces etc.fixed to the wall, ceiling or above the ground including taking down of old water tubing of same size, complete all as specified and directed.

Supply and fixing of Butterfly type gate valves (ISI-marked) with iron handle, screwed both ends for iron pipe 100 mm bore and fixed, all as specified and directed.

Material and labour for cleaning and preparing the surfaces to be welded together, holding the members in true position while welding and bevelling of edges, as required . Thickness of the metal to be weld is Exc 6 mm but n exc 9 mm complete cleaning of surface after welding, checking for leakage complete all as specified and directed.

Material and labour for Lagging of exposed pipe by providing all around of pipe thick bounded mineral wool of 50 mm thickness performed SNAPON pipe section of density 144 Kg/M3 conforming to IS-9842, covered completely by chicken mesh net 25 guage 20mm mesh and reinforced with 1mm galvanised wire applied spirally @15cm centre to centre and providing 5mm thick smooth evenly. Plaster layers of composition consisting of 85% magnesia asbestos and plaster of paris mortar 1:6 of required strength to suit exposed weather condition under sub zero temperature for 20 mm dia pipe.

All as per srl item No 64.00 here-in-above but for 25 mm dia pipe.

Material and labour for Lagging of exposed pipe by providing all around of pipe thick bounded mineral wool of 50 mm thickness performed SNAPON pipe section of density 144 Kg/M3 conforming to IS-9842, covered completely by chicken mesh net 25 guage 20mm mesh and reinforced with 1mm galvanised wire applied spirally @15cm centre to centre and providing 5mm thick smooth evenly. Plaster layers of composition consisting of 85% magnesia asbestos and plaster of paris mortar 1:6 of required strength to suit exposed weather condition under sub zero temperature for 100 mm dia pipe.

Excavation in trenches not exceeding 1.5 m wide and not exceeding 1.5 m in depth for laying of pipe line etc including getting out soft/loose soil complete all as specified and directed.

Removing of surplus soil to a distance not exceeding 50mtrs and depositing where directed at a level not exceeding 1.5 mtrs above the starting point complete all as specified and directed.

Returning, filling in, including spreading, leveling, watering and well ramming in layers not exceeding 25 cm in any type soil.

Earthing complete with galvanised steel earth plate electrode 60 x 60 cm x 6.3 mm thick, buried directly in ground (earth pit not less than 2.25 metres deep below ground level) with top edge of the plate not less than 1.5 metres below normal ground level, connected to galvanised iron strip 32X6 mm as earth strip by means of bolts, nuts, check nuts and washers of galvanised iron or steel all as shown in Electrical plate No. 3, SSR Part I- 2009 with 40 mm dia medium grade GI pipe as a protection to earth strip and 15 mm dia medium grade GI pipe for watering purpose including excavation and earth work in any type of soil, funnel, wire mesh, PCC pit, RCC cover, CI frame etc complete and connected to earthing test point all as specified or indicated including testing on completion.

M/S LATIF AHMAD MIR

Top Mind Industries Pvt Limited