REPAIR/PREVENTIVE MAINTENANCE OF SUMMER APPLIANCES AND MAINT OF CENTRAL AC PLANT AT DSCC UNDER GE DRONACHAL

Amount

M & L for servicing of split type AC of capacity 1.5/2 TR of any by opening the condenser unit fixed on roof top and cooling unit fixed inside the building, and cleaning the complete condenser unit and cooling unit including fins, blower fan motor and checking and testing of all parts for its serviceability, oiling/greasing to condenser cum blower fan motors, remore replacing worn out rubber, bushes/rubber packing, rectification of unusal noise, checking of refrigerant standing pressure, replacement of minor parts such as nut/bolt washers etc and reassembling of complete AC including testing for smooth functioning complete all as directed by Engineer-in-Charge.Note: Spare parts will paid in relevant item here in after:-

Supply only of air filter of size 10 micron Split type AC 1.5/2 TR

Supply only Blade for condensing fan motor Split type AC

Supply only running Capacitor 50 Mfd for 2 TR ac

Supply only running Capacitor 45 Mfd for 1.5 TR ac

Supply only condenser coil copper of ac capacity 1.5 TR

Supply only condenser coil copper of ac capacity 2 TR

Supply only suction valve brass type 5/8"of ac capacity 1.5 TR

Supply only suction valve brass type 5/8"of ac capacity 2 TR

Supply only coil sensor and room sensor for ac capacity of 1.5/2 TR

Supply only swing motor for air adjust of suitable size Make:OEM

Supply only relay for overload of suitable size for ac capacity 1.5/2 TR Make:OEM

M&L for removing the cooling fan motor of capacity 1/30 or 1/35 HP from split type AC 1.5 TR,and S&F the same complete all as directed by Engr-in-Charge.

M&L for removing the cooling fan motor of capacity 1/30 or 1/35 HP from split type AC 2 TR,and S&F the same complete all as directed by Engr-in-Charge.

S&F of blower motor of capacity 1/30 or 1/20 HP split type AC 1.5/2TR. Complete all as directed.

Foam type insulating flexible pipe & air tight outer tapping fitted on ACs of any capacity for suction / discharge copper tubes.

S&F in repairs wall mounted indoor Voltage Stabilizer automatic operation single phase and designed for input variation between 170 V to 250 Volt with output voltage stabilized at 230 V with accuracy of +2.5% and of capacity 5 KVA.

S&F in repairs wall mounted indoor Voltage Stabilizer automatic operation single phase and designed for input variation between 170 V to 250 Volt with output voltage stabilized at 230 V with accuracy of +2.5% and of capacity 4 KVA.

S&F in repairs Rotary type Compressor (Sealed Unit) of window / split type AC 1.5 TR capacity, single phase, 220 volt of make Kirloskar / Tecumseh / Carrier including necessary modification of foudation as required to suit the comptessor, vacumisation, pressure testing, leakage rectification including gas charging R-22/134 & testing complete to the entire satisfaction of Engr-in-charge & depositing the old compressor in E/M store.

S&F in repairs Rotary type Compressor (Sealed Unit) of window / split type AC 02 TR capacity, single phase, 220 volt of make Kirloskar / Tecumseh / Carrier including necessary modification of foudation as required to suit the comptessor, vacumisation, pressure testing, leakage rectification including gas charging R-22/134 & testing complete to the entire satisfaction of Engr-in-charge & depositing the old compressor in E/M store yard.

S&F in repairs Rotary type Compressor (Sealed Unit) of refrigerator 165/175 ltr capacity, single phase, 220 volt of make Kirloskar / Tecumseh / Carrier including necessary modification of foudation as required to suit the comptessor, vacumisation, pressure testing, leakage rectification including gas charging R-22/134 & testing complete to the entire satisfaction of Engr-in-charge & depositing the old compressor in E/M store yard.

Supply and top up of Refrigerant gas R 22 in company sealed cylinder of capacity all as directed by Engr-in-charge

Supply and top up of Refrigerant gas R 134 in company sealed cylinder of capacity all as directed by Engr-in-charge

S & F in replacement PCB Senser unit with wire remotre control of ductable AC indoor unit of Capacity 1.5 TR for removing old PCB and refix with new PCB of same make & capacity and model in the same position complete all as directed by Engr in Charge.

S & F in replacement PCB Senser unit with wire remotre control of ductable AC indoor unit of Capacity 2 TR for removing old PCB and refix with new PCB of same make & capacity and model in the same position complete all as directed by Engr in Charge.

Supply & fixing in repairs single pole and neutral enclosure with a two pin and socket complete with one single pole MCB 240 volts, 20 Amps

M&L for cleaning after taking down complete body including fitting and fixture of desert cooler of capacity 4000/5000 cum/hours of any make with wire including removal of all sludge, loose paint dirt etc and preparationand cleaning of surface for painting and applying two coats of synthetic enamel spray paint inside and out side surfaces and applying two coats rubber seal paint inside the water tank, and rewriting of MES No. etc. Complete all as directed by Engr-in-Charge.

S&F in repairs PVC flexible pipe 16mm outer dia complete with PVC elbow etc.

S&F in repairs wood wool pad (set of three), minimum weight 0.8 Kg, fixed in side panels of desert coolers including GI wiremesh of 20 Gauge wire and mesh size 100 x 100 mm complete all as directed .

S&F in repairs switch piano type 250 Volts, single pole one ways 5 amps, fixed in desert coolers.

S&F in repairs capacitor 4 MFD for fan motors of desert coolers.

S& F in repairs Submergible pump 230 volts suitable for desert cooler of capacity 4000/5000 including necessary wiring complete all as directed. Make:- Crompton/ Khaitan / Cool home

S & F in repairs side shutter (set of three) made out from 24 guagethick galvanized iron sheet suitable for 4000/5000 cum/hrs capacity desert coolers complete all as directed.

S&F in repairs float valve high pressure of PTMT with epoxy coated aluminum rod and high density plastic ball, screwed for 15mm bore iron pipe, weight not less than 142gm/each. Complete all as directed.

S & F in repairs Aluminium fan blade for fan motor of desert cooler 300 mm sweep.

S & F in repairs PVC, 3 way distributor suitable for 15 mm pipe with nut/ screws all as directed.

S & F in repairs desert cooler body of size 60x55x65 cm made out of 20 gauge GI sheet & water storage tank of soze 65x55x20 cm deep made out of 18 gauge GI sheet including front grills & three side shutters duly fitted with wood pads & duly spray painted with two coats of synthetic enamel paint over a coat of red oxide primer (inside & outside) all as directed by Engr-in-charge.

S & F in repair desert cooler fan motor 3 speed copper winding ISI mark including suitable leg set of three including nut bolt washer all as directed.

S & F wooden scantling second class hard wood of size 50X50 mm and making frame and fix with screw and nail for supporting to desert cooler.

S & F ply wood with commercial face of 5 ply 6mm thick BWR grade for packing of AC and Desert cooler all as directed.

M&L for sub main wiring with two runs of 4 sqmm single core PVC insulated but unsheathed FRLS copper conductor 1100V drawn through and including rigid heavy duty PVC conduit 25 mm dia with conduit accessories including 2.5 sqmm PVC insulated but unsheathed FRLS copper conductor used as earth wire all as directed by EIC

Supply and lay PVC pipe 20 mm dia with fittings in repair fixed on wall / ceiling.

M & L for descaling of condenser tube, chiller tube of central AC plant of capacity 3 X 65 TR (3 Nos) by disconnecting the condenser from the system, cleaning by descaling solution, cleaning condenser tube by nylon brush & mild steel rod of suitable size, replacement of rubber joints and unserviceable nut bolts including repair of leakage tube if any complete all as specified and as directed. Note: - (i) Whole process of descaling shall be done until the constant PH less than 2 is achieved.(ii) Descaling of condenser tubes required to meet the designed pressure conditions and cooling specifications for desired rate of flow of refrigerant in compressor and water in condenser complete all as specified and directed by Engr-In-Charge(iii) Arrangement of required T&P e.g., pump, tube, descaling solution, etc shall be provided by contractor Note :- Descalling & allied work to be done only by OEM or authorised agency of TRANE.

M & L for compressor oil for Make: TRANE, Model No. RTWS085 confirming to as per clause 22.3 given in SSR PT I complete all as specified and directed by Engr-In-Charge.

Supply and fixing Pressure gauge including syphon

M&L for installation ,testing ,and commissioning of Expansion Valve (EXV) with module including

M&L For Liquid level sensor

M&L for Dryer filter core

M&L for Oil filter (Internal & External)

Oil line loading unloading Plunger

M&L for water temp sensor

M&L for 'O' Ring set

M& L For power card

M&L for Starter Board

M&L for Loading and unloading card

M&L for Y stainer

M&L for pot stainer

Supply & fix CI butterfly valve of 125 mm size of condenser water lines IN & OUT at chiller for chiller No. 1,2,3 Make: OEM

M & L for complete servicing of AHU unit of 23000 CFM capacity installed including replacement of defective parts as under after removing and refixing of insulation etc and testing commissioning of plant after replacement of spares including cleaning of filter, including Modulating motor servicing, alignment & bearing oiling completed all as specified and directed. Note: -Spares required to be measured and paid separately under relevant items

Supply and fixing fan belts of AHU of size B-42 (Make: Dunlop) as per existing size after removing the defective worn out fan belt.

Supply and fixing fan belts of AHU of size A-44 (Make: Dunlop) as per existing size after removing the defective worn out fan belt.

Supply and fixing fan belts of AHU of size A-55 (Make: Dunlop) as per existing size after removing the defective worn out fan belt.

Supply and fixing fan belts of AHU of size B-78 (Make: Dunlop) as per existing size after removing the defective worn out fan belt.

Supply and fixing fan belts of AHU of size B-90 (Make: Dunlop) as per existing size after removing the defective worn out fan belt.

Supply and fixing in replacement after removing defective worn out bearing,fixing of new fan bearing of AHU blower of capacity 8471 CFM- Fan Model: BDB 500, (AHU make: OEM, model : ZDS 120) including making alignment of drive sets (pulley and belts) complete all as specified and directed.

Supply and fixing in replacement after removing defective worn out bearing,fixing of new fan bearing of AHU blower of capacity 18000 CFM- Fan Model : BDB 800.(AHU make: OEM, model : ZDS 2005) .

Supply and fixing in replacement after removing defective worn out bearing, fixing of new fan bearing of AHU blower of capacity 4765 CFM- Fan Model: BDB 400.(AHU make: OEM, model : ZDS 60)

Supply and fixing in replacement after removing defective worn out bearing, fixing of new fan bearing of AHU blower of capacity 9000 CFM- Fan model BDB 560 (AHU make: OEM, model : ZDS 120)

Supply and fixing in replacement after removing defective worn out bearing, fixing of new fan bearing of AHU blower of capacity 22765 CFM- Fan model BDA 900 (AHU make: OEM, model : ZDS 300)

Supply and fixing in replacement of door lock of AHU doors as per existing size and make including all hardware as required complete.

M&L for repair and rewinding of blower motor of capacity 7.5 HP/5.5 after taking out from its existing location, transporting to work shop, removing defective burnt wiring, rewinding of motor with new copper wire of suitable gauge including replacement of insulation paper, baking, heating , varnishing of winding, replacement of bearing, any machining and lath work as required, replacement of hardware as required etc and refixing it in existing location, testing comissioning complete up to the satisfaction of engineer in charge. Make of motor:- Bharat Bijili Ltd.

Supply and fixing in replacement of Pre filters (Air filter) of AHU of size 610 x 610 x 50 mm (60x60x5cm) and as per existing including all material(like wire mesh and other hardware etc) required for fixing of filters.

Supply and fixing in replacement of Pre filters (Air filter) of AHU of size 610 x 610 x 30 mm (60x60x3cm) and as per existing including all material(like wire mesh and other hardware etc) required for fixing of filters.

Supply and fixing in replacement rubber Gasket as per exisiting size and make.

Supply and fixing in replacement Limit switch as per existing size and make

Supply and fixing in replacement of lights in side of AHU unit as per existing size and make

Supply and fixing in replacement Magnhelic gauges as per existing size and make

Supply and fixing in replacement relay contactor, 3 Pole power contractor type MNX , Make :- L&T of AC 3 rating 25 Amp, AC1 rating 45 Amp.

Supply and fixing in replacement relay contactor,4 Pole power contractor type MCX, Make :- L&T of AC1 rating 50Amp.

Supply and fixing in replacement Auto ON-OFF relay and as per existing size and make

M & L for repairing of AHU`s supply/ return air duct for leakages in position with new GI sheet of min 24 guage all as directed by engineer in charge.

M & L for insulating the duct/ pipes/ valves etc with nitril rubber thermal insulation of 25 mm thickness to prevent the losses of cooling

M & L for fixing of blower motor of AHU in correct alignment and to checkup and making correct alignment of drive sets belt and pulley complete all as specified.

Supply and fixing in replacement of complete motorized solenoid valve of AHU complete all as specified.

Supply and fixing in replacement of solenoid switch of motorized valve of AHU complete all as specified.

Supply and fixing in replacement of Damper motor of AHU,24V AC/DC complete all as specified.

M&L for of electrical wiring of AHU's connnecting limit switch & light as per existing.

Supply and fix temperature sensor of evaporator entering, condenser entering and evaporation leaving discharge temperature suirable for chiller model given above, Make: OEM

M&L for repair and rewinding of cooling tower fan motor of capacity 10 HP after taking out from its existing location, transporting to work shop, removing defective burnt wiring, rewinding of motor with new copper wire of suitable gauge including replacement of insulation paper, baking, heating , varnishing of winding, replacement of bearing, any machining and lath work as required, replacement of hardware as required etc and refixing it in existing location including testing, commissioning complete all as specified and as directed.

M&L for repair and rewinding of condenser water pump & chilled water pump of capacity 15 HP after taking out from its existing location, transporting to work shop, removing defective burnt wiring, rewinding of motor with new copper wire of suitable gauge including replacement of insulation paper, baking, heating , varnishing of winding, replacement of bearing, any machining and lath work as required, replacement of hardware as required etc and refixing it in existing location including testing, commissioning complete all as specified and as directed.

(d) M&L for repair and rewinding of condenser water pump & chilled water pump of capacity 7.5 HP after taking out from its existing location, transporting to work shop, removing defective burnt wiring, rewinding of motor with new copper wire of suitable gauge including replacement of insulation paper, baking, heating , varnishing of winding, replacement of bearing, any machining and lath work as required, replacement of hardware as required etc and refixing it in existing location including testing, commissioning complete all as specified and as directed.

Supply installation testing and comissioning of chiller water pump (Horizontal end suction/ vertical inline type) centrifugal type suitable for 65 TR chiller capacity flow rate approx 500 LPM, Head-20-25 meter, Cast iron impeller, motor- 3 phase, 415 V ,50 Hz, RPM- 2900, 7.5 HP. Complete all as specified and as directed.

Repair and replacement of cooling tower fin block of dimension 600 mm X 150 mm X 150 mm- 600 Nos (quantity) complete all as specified and as directed.

Repair and replacement of cooling tower draft eliminator block of dimension 600 mm X 150 mm X 150 mm- 300 Nos (quantity) and 3 cooling tower fans blade 3 Nos complete all as specified and as directed.

S&F in repair/replacement of Cooling Tower sprinkler system alongwith PVC connection pipes 40mm for cooling tower of capacity 65 TR, complete all as specified and as per directed.

M & L for cleaning the cooling tower by applying wire brush, washing powder and other solvent by removing the deposited impurities such as silt, dust particles mud/ sand inside the dome and around the fins, on wire mesh, main shaft etc. and other connected items using chemical compound based on sulphuric acid or hydrochloric acid including painting condenser lines of chiller & cooling tower structure by preparation of old painted surfaces, removing dust and other deposited materials by scrapping from cooling structure along with water lines and painting of structure with two coat of mint green paint over a coat of red oxide zinc chrome primer with synthetic enamel paint (first Grade/quality) from ground including writing 50 mm size figure/letter over blue, black on body for making data entry complete all as specified and directed.

Note for item No. 33 to 86 above :- (a) Contractor should visit the site before quoting the tender. (b) Repair work of AHU`s under relevant items mentioned above to be carried out through authorised service engineer of M/s OEM aircon limited/Voltas ( OEM of AHU`s). (c) All spares for repairing of AHU`s like bearing, belts, hinges, lock, gaskets, air filter, relays, limit switch etc what ever may be required and reccomended for replacement to be purchase from OEM and it should be genuine spares. Contractor has to produce the purchase voucher of the same to department before fixing/ installation of parts. (d) Repair to motorized solenoid valves, non motorized valves, Damper motor, actuators, sensors etc to be carried out through agency expert in Air conditioning mangement. Credential of agency in this respect to be produed to GE before carried out repairs. (e) Cost of hardware or any item not mentioned in tender but required to be installed for commissioning or to making the equipment fuctional is to be provided by the contractor.Rate for same to be quoted by contractor in the revent item and No separate payment will be made for this. (f) Instruments like Anemometer, laser temprature gun and other instruments as required to check the performance of AHU`s during maint checkup to be arranged by contractor. (g) Contractor shall be responsible for one years for the all repair works as mentioned above, carried out in of AHU's.

SAMEER ELECTRICAL SUPPLIER (BID ID -3477115)

MODI CORPORATION (BID ID -3470996)