Refurbishment/Renovation of 2x120TR AC chillers and other high side equipments of Glycol Based thermal energy storage type Central AC plant along with associated works at T.E. Building, J.L.N Marg, New Delhi

Amount

Dismantalling of faulty/worn-out screw compresssor with motor from AC chilling unit of 120 TR capacity, lifting & shifting it with the help of chain pulley block and heavy labour from terrace of building to ground and transporating the same from site to the workshop, replacement of entire bearings i/c central bearings with the use of hydraulic machine and alignment of central shaft including replacement of defective parts, accessories such as internal/external filters, gaskets, O- rings, gauges, gas valve, checking & replacing of other related components, making the compressor operational, bringing the compressor at site and refixing it on the chiller machine, testing & commissioning etc. complete as required. (Make - Bitzer)

S.I.T.C. of energy efficient Heat-Exchanger fan complete with blades, hub, shaft etc. capable for free air-delivery of 20000CFM having electric motor of 3.5 HP, F Class insulation, IP 66 protection suitable for 24 hrs. continuous outdoor-duty operation on 415V +/- 5%, 50Hz, 3 phase a.c. supply including dismantling the existing faulty/burnt-out irrepairable heat-exchanger fan with all accessories & motor and handing-over to the department etc. complete as required. (Make : Emicon/Ziehl Abegg/SS Model - FC090SDA7Q.2/SS)

Rewinding of 12.5 HP, 415V +/- 5%, 50 Hz, 3 phase AC TEFC Squirrel cage induction motor of hot water horizontal split casing pump set with suitable gauge of copper wire, F- class insulation, varnishing, re-fitting the motor-pump set i/c proper alignment, electrical-connections, testing etc. complete as required. (Make: M/s Beacon Flow Rate - 252 USGPM/Head : 30 Metre)

Rewinding of 10 HP, 415V +/- 5%, 50 Hz, 3 phase AC supply, TEFC squirrel cage induction motor of single stage horizontal centrfugal, monoblock pump set with suitable gauge copper wire, F- class insulation, varnishing, re-fitting the motor-pump set i/c proper alignment, electrical-connections, testing etc. complete as required. (Make: Kirloskar)

Repairing & refurbishment of 20 HP chilled water pump i/c the attached coupling, bushes, bearings etc. and dismantling the same from base frame and transporting to workshop for repair & refurbishment, bringing the repaired pump set back at site, installation, testing and commissioning, providing heat-insulation of the pump-set etc complete as required. (Make: M/s Beacon, Model: BWC 80/100)

Repairing & refurbishment of 12.5 HP/Flow Rate 252 USGPM, Head 30 Metre, Hot water pump i/c the attached coupling, bushes, bearings etc. and dismantling the same from base frame and transporting to workshop for repair & refurbishment, bringing the repaired pump set back at site, installation, testing and commissioning, providing heat-insulation of the pump-set etc complete as required. (Make: M/s Beacon)

Providing and fixing of display card in microprocessor based controller fixed in AC chilling units i/c setting all parameters, safety set point, controls i/c checking and carrying out re-wiring to make the controller operational etc. complete as required. (Make: Carel Model:PCO1)

Providing and fixing of following components in fluid/electrical/mechanical/refrigerant circuit of central air-conditioniong system etc. complete as required: a) Sensor Control (Thermostat)

b) LP Control Switch/Sensor

c) HP Control Switch/Sensor

d) Capillary (flexible type)

e) Water flow switch

f) Thermometer (Range: -20° C to 50° C, Make - H Guru/SS)

g) Syphon with valve

h) Transducer (HP/LP)

Providing and fixing of V Belts of Air handling units of sizes ranges as under : a)B43

Providing and fixing of V Belts of Air handling units of sizes ranges as under :a) A 24

Providing and fixing of Drive Set of pulleys for air handling unit and motor having B Groove Section to accommodate two/three nos of belts of existing with key way threaded studs etc for delivering desired CFM to maintain the air flow in summer/winter conditions and temperature complete as required. (Make - Jaycee/Feener or SS )

Providing and fixing of water pressure gauge in chilled/condensor water pipeline of central AC Plant. (Range : 0 to 10 Kg/cm2, Make : H Guru, )

Providing and fixing of fine filters of following sizes complete with GI frame and having an efficiency of 99.9 % to 5 Microns i/c providing and fixing of gaskets to make leak proof from all the sides and notches for holding the pads jointed with wire mesh on one side for strengthening to stand with air presure complete with all accessories. (for AHUs & fresh air units) a) 600mmx600mmx45 mm

b) 715mmx515mmx45mm

c) 540mmx500mmx45mm

d) 460mmx485mmx45mm

e) 515mmx475mmx45mm

f) 490mmx460mmx45mm

g) 615mmx580mmx45mm

h) 500mmx470mmx45mm

Providing and fixing of pre filters having an efficiency of 99.9 % down to 5 Microns i/c gaskets in GI Frame etc of Size 550 x 550 x 50mm thick and fixing in Airconditioning ducting/AHU's etc complete as required.

Supplying and filling polyester oil (POE oil) for compressor of 120TR /172TR AC chiller with removing covers, gaskets and emptying of existing oil etc. complete as required. (Make & Grade: Bitzer BSE 32)

Replacement of STAR DELTA STARTER rating from 20HP to 30 HP with necessary acessories i/c dismanting of old faulty burn out switch gear and accessories, necessary modification in compartment like modification of existing busbars and servicing of terminals,connection,testing etc as reqd (Make - Minilac/L&T/Schnieder)

Replacement of STAR DELTA STARTER rating from 10 HP to 12.5 HP with necessary acessories i/c dismanting of old faulty burn out switch gear and accessories, necessary modification in compartment like modification of existing busbars and servicing of terminals,connection,testing etc as reqd (Make - Minilac/L&T/Schnieder)

Supplying and filling Mono-ethylene glycol Solution (MEG) having specifc gravity of 1.08 to 1.10 at 25 ° C and PH value of 12 for the entire system in the existing make-up water tank of the thermal energy storage system of the central a.c. plant.

Providing and fixing of MS structural frame fabricated out of MS angle iron, solid bar i/c cutting welding grinding and finishing with two coat of enamel paint etc. for installation of air condenser and for miscellenous works etc. complete as required.

Supplying and filling refrigerant (R-134A) in the existing chilling machines of central AC plant.

Providing and fixing 150mm dia Strainers with filter for AC plant etc. complete as required. ( Make - Emerald/SS)

Part Renovation/Repairing of Soft Starter of AC chiller having built-in safeties, cards etc with replacement of components such as thyristor, electrical parts, programming of cards and replacement of display system etc as reqd

Providing and fixing of micro processor controller card in controller panel of chilling machines of central AC plant (Make - Carel, Model: PCO1.) including disconnecting and removing of the existing faulty controller card & handing over to the department.

Providing and fixing of following rating switchgears/ electrical accessories in LT Panels with modification in compartments for fixing of electrical accessories etc complete as required. a) MCCB 4 Pole 100 Amps 25KA (Make: Siemens/Schneider/L&T/ABB)

b) MCCB 3 Pole 100 Amps 25KA (Make: Siemens/Schneider/L&T/ABB)

c) MCCB 4 Pole 125 Amps 25 KA (Make: Siemens/Schneider/L&T/ABB)

d) MCCB 4 Pole 630 Amps 50 KA (Make: Siemens/Schneider/L&T/ABB)

e) Overload Relay (0-8.5 Amps)

f) Overload Relay (14.5-18.5Amps)

g) Contactor (CL 25)

Supplying, laying, fixing, testing & commissioning of 3.5 core 240 sq.mm aluminium conductor XLPE armoured cable of 1.1 KV grade with 2 nos GI earth wires complete with end termination and brass compression glands etc. as reqd (Duly ISI marked cable of HAVELLS/POLYCAB/KEI make)

Providing and fixing of three way mixing valve of 150 mm dia with actuator, 24 Volt Transformer DC/AC supply i/c dismantling of non operational valve in chilled water pipe line with fixing new flanges, nut bolts, gaskets, insulation as required. (Make: Advance/Rapidcool/Honeywell/)

Providing and fixing of butterfly valve of 150mm NB i/c dismantling of non operational valve from chilled water pipeline, providing and fixing new flanges, gaskets, nut bolts, thermal insulation etc. complete as required. Make:-M/s Advance

Providing and fixing of butterfly valve of 125mm NB i/c dismantling of non operational valve from chilled water pipeline, providing and fixing new flanges, gaskets, nut bolts, thermal insulation etc. complete as required. Make:-M/s Advance

Providing and fixing of motorized butter fly valve of 300mm dia in chilled water pipeline i/c dismantalling of non operational valve from existing pipeline with replacing with new one along with flanges, nut bolts i/c removing thermal job etc and making the same good etc. complete as required. (Make: Advance/Audco/SS)

Providing and replacment of existing defective sensor of controller of AC Chiller for various functions of components and control wiring as per diagram including software programming with modules and display features of temperature, HP/LP, sensors etc complete as required.

Modernisation/Conversion of Electronic Expansion valve arrangement of 1 number 120TR air cooled chiller by replacing of Electronic Expansion Driver, Expansion Valve battery with thermostatc expansion valve or expansion valve kit such as TXV/ elements, HP/LP sensors, controls etc as required for smooth functioning of AC Chiller.

Providing C- Shine Chemical/Alakaline based chemical for cleaning of cooling/heating/DX coils of HVAC System with checking conditions of coil i/c combing for enhancing the life span of coils and applying chemical as per recomendations of manufacturer to remove dust/dirty particles from the surface and inner part of aluminium fins and copper tubing etc (Make - Floricon/C-Shine)

Providing & fixing of following size of powder coated Aluminium construction supply/return air grill or Diffuser with 60% free area etc. complete as reqd. a) Supply air grill/diffuser with volume control damper for room (Size:As per requirment,area :less than or equal to 4 sq ft.)

b) Return air grill / Diffuser ( Size:As per requirment, area :less than or equal to 4 sq ft.)

c) Pdg. & fixing of air grill for ductable indoor unit of suitable size complete as reqd. (Size upto 4Sqft)