GE I R AND D/CHD-107/2025-26 REPAIRS AND MAINT OF CENTRAL AC PLANTS ALONGWITH PANELS AND OTHER CONNECTED ITEMS AT TBRL RANGE RAMGARH AREA

Amount

Overhauling to the unserviceable compressor semi sealed type capacity 25 ton by opening, dismantling of compressor, necessary machining / mechanical repair work etc and replacement of wornout spare parts for smooth functioning of compressor, reassembling and testing for satisfactory operation all as directed by Engineer-in-Charge. The spare parts and other items required for replacement shall be measured and paid under Sch 'A' item No. 1 to 11 for separately. The spare parts which are not mentioned but are required for smooth and proper functioning / operation of compressor are deemed to include in the unit job complete all as specified and directed. Note :- (Refrigerant gas and compressor oil shall be measured and paid for separately under relevant item of Sch 'A').

Supply only in replacement of following spare parts for compressor semi sealed type capacity 25 Ton for srl item No.01 above. Connecting rods complete all as specified and directed.

All as per serial item no 1.00 above but for suction reed and spring -ditto-

All as per serial item no 1.00 above but for discharge reed and spring -ditto-

All as per serial item no 1.00 above but for piston ring set -ditto-

All as per serial item no 1.00 above but for piston with pin -ditto

All as per serial item no 1.00 above but for gas kit set -ditto-

All as per serial item no 1.00 above but for repair to crank shaft by machining work as required -ditto-

All as per serial item no 1.00 above but for main bush -ditto-

All as per serial item no 1.00 above but for piston lock -ditto-

All as per serial item no 1.00 above but for loading unloading valve coil -ditto-

Overhauling to the unserviceable compressor semi sealed type capacity 16 Ton by opening, dismantling of compressor, necessary machining / mechanical repair work etc and replacement of wornout spare parts for smooth functioning of compressor, reassembling and testing for satisfactory operation. The spare parts and other items required for replacement shall be measured and paid under Sch 'A' item No.2.00 to 2.17 for separately. The spare parts which are not mentioned but are required for smooth and proper functioning / operation of compressor are deemed to include in the unit job complete all as specified and directed. Note :- (Refrigerant gas and compressor oil shall be measured and paid for separately under relevant item of Sch 'A')..

Supply only in replacement of following spare parts for compressor semi sealed type capacity 16 ton for srl item No.12 above. Connecting rods complete all as specified and directed.

All as per serial item no 13.00 above but for connecting rods bearing in two half -ditto-

All as per serial item no 13.00 above but for suction reed and spring -ditto-

All as per serial item no 13.00 above but for discharge reed and spring -ditto-

All as per serial item no 13.00 above but for piston ring set -ditto-

All as per serial item no 13.00 above but for piston -ditto-

All as per serial item no 13.00 above but for piston pin bush -ditto-

All as per serial item no 13.00 above but for piston pin -ditto-

All as per serial item no 13.00 above but for piston lock -ditto-

All as per serial item no 13.00 above but for piston liner -ditto-

All as per serial item no 13.00 above but retaining plate -ditto-

All as per serial item no 13.00 above but for discharge valve assembly -ditto-

All as per serial item no 13.00 above but for shaft seal assembly -ditto-

All as per serial item no 13.00 above but for gas kit set -ditto-

All as per serial item no 13.00 above but repair to crankshaft by machining work as required-ditto-

All as per serial item no 13.00 above but for 'O' ring set -ditto-

All as per serial item no 13.00 above but for main bush -ditto-

Supply and fixing in replacement A 28 section- A V belts sections/sizes of V-belt as per existing complete all as specified and directed.

All as per serial item no 30.00 above but for A32 section-A V belts -ditto-

All as per serial item no 30.00 above but for B 68 section-B V belts -ditto-

All as per serial item no 30.00 above but for B 95 section-B V belts -ditto-

All as per serial item no 30.00 above but for B 118 section-B V belts -ditto-

Supply and filling compressor oil complete all as specified and directed.

Supply and fixing in replacement gun metal butterfly valve of 200 mm bore after removing old defective valve and providing necessary aluminium cladding and insulation as per existing complete all as specified and directed.

All as per serial item no 36.00 above but of bore 150 mm -ditto-

All as per serial item no 36.00 above but of bore 100 mm -ditto-

All as per serial item no 36.00 above but of bore 80 mm -ditto-

All as per serial item no 36.00 above but of bore 65 mm -ditto-

All as per serial item no 36.00 above but of bore 50 mm -ditto-

Supply and fixing in replacement gun metal gate valves of size 15 mm with iron wheel head, screwed both ends for iron pipe complete all as specified and directed.

All as per serial item no 42.00 above but of size 20 mm -ditto-

All as per serial item no 42.00 above but of size 25 mm -ditto-

Supply and fixing in replacement ball brass valves of size 15 mm dia, high pressure, with polythene float and flynut complete, screwed for iron pipe or brass ferrule complete all as specified and directed.

All as per serial item no 45.00 above but of size 20 mm complete -ditto-

All as per serial item no 42.00 above but of size 25 mm -ditto-

Material and Labour for galvanised iron pipe medium grade of dia 25 mm including all fittings like elbows, bends, nipples, tees, plugs and unions etc. complete for making connections to cooling towers/ condenser or chilled water line for air release/make up water tank etc complete all as specified and directed.

All as per serial item no 48.00 above but of dia 20 mm -ditto-.

All as per serial item no 48.00 above but of dia 15 mm -ditto-.

Material and labour for laying MS pipe heavy grade of dia 40 mm with all fittings for making connections to cooling towers/ condenser or chilled water line complete all as specified and directed.

Material and labour for laying MS pipe heavy grade of dia 50 mm with all fittings for making connections to cooling towers/ condenser or chilled water line complete all as specified and directed.

Material and labour for laying MS pipe heavy grade of dia 65 mm with all fittings for making connections to cooling towers/ condenser or chilled water line complete all as specified and directed.

Material and labour for laying MS pipe heavy grade of dia 80 mm with all fittings for making connections to cooling towers/ condenser or chilled water line complete all as specified and directed.

Material and labour for taking out / purging of refrigerant gas from the system Material and labour for taking out / purging of refrigerant gas from the system of A/c plant unit upto 1x 16 TR capacity for carrying out vacuum test by vacuuming the whole A/c plant with the help of vacuum pump and checking the complete system for leakages. Carrying out the pressure test by charging the nitrogen gas in the system and checking of any leakage point , repair / rectification of the same and removing the nitrogen gas from the system and charging of refrigerant gas including charging of additional gas as required complete all as specified and directed. (Note: (i) The arrangement of tand P Nitrogen gas shall be contractors responsibility. (ii) Refrigerant gas shall be measured and paid for separately

Material and labor for taking out / purging of refrigerant gas from the system of A/c plant unit range 1x 25 TR to up to 1x33 TR capacity for carrying out vacuum test by vacuuming the whole A/c plant with the help of vacuum pump and checking the complete system for leakages. Carrying out the pressure test by charging the nitrogen gas in the system and checking of any leakage point , repair / rectification of the same and removing the nitrogen gas from the system and charging of refrigerant gas including charging of additional gas as required complete all as specified and directed. Note: The arrangement of T and P nitrogen gas shall be contractors responsibility) Note : Refrigerant gas shall be measured and paid for separately.

Material and labour for taking out / purging of refrigerant gas from the system of A/c plant unit range 1x 66 TR to up to 1x85 TR capacity for carrying out vacuum test by vacuuming the whole A/c plant with the help of vacuum pump and checking the complete system for leakages. Carrying out the pressure test by charging the nitrogen gas in the system and checking of any leakage point , repair / rectification of the same and removing the nitrogen gas from the system and charging of refrigerant gas including charging of additional gas as required complete all as specified and directed. Note: (i) The arrangement of T and P nitrogen gas shall be contractors responsibility) (ii) Refrigerant gas shall be measured and paid for separately.

Material and labour for taking out / purging of refrigerant gas from the system of VRV/VRF unit of any capacity vacuuming the whole VRV/VRF with the help of vacuum pump and checking the complete system for leakages. Carrying out the pressure test by charging the nitrogen gas in the system and checking of any leakage point , repair / rectification of the same and removing the nitrogen gas from the system and charging of refrigerant gas including charging of additional gas as required complete all as specified and directed. Note: (i) The arrangement of TandP nitrogen gas shall be contractors responsibility) (ii) Refrigerant gas shall be measured and paid for separately.

Material and labour for charging of refrigerant gas R-410A/ R-134A/R-22/R-407C in AC plant complete all as specified and directed.

Material and Labour for dismantling unserviceable electric motor AC 3 Phase of capacity 2/3/5/7.5/10 HP and rewinding with super enamelled copper winding wire of existing size and replacing other burnt items including installing and testing complete all as specified and directed. Note:- Copper winding wire shall be measured and paid for separately under respective item.

Supply and fixing in replacement super enamelled copper winding wire complete all as specified and directed.

Supply and fixing in replacement ball bearing No 6206/6208/6306/6307 complete all as specified and directed.

Supply and fixing in replacement ball bearing No 6308/6309/6310 complete all as specified and directed.

Supply and fixing in replacement of cooling fan (PVC) for following rating water pump sets including dismantling of old one complete all as specified and directed:- 3 HP/ 5 HP

All as per serial item no 64 above but for capacity 7.5 HP / 10 HP -ditto-

Repair and overhauling to air handling unit of central AC plants, dismantling of air filters and cleaning the cooling coil with chemical and refixing the air filter after cleaning and testing and greasing the bearing of blower shaft etc complete all as specified and directed. Note The following AC Plant AHUs Air handling unit of 2x25 Ton Central AC plant at spark range, Zone-I

All as per serial item no 66 above but for air handling unit of 3x33 ton central AC plant at Instrument bldg, Zone-I -ditto-

All as per serial item no 66 above but for air handling unit of 3x25 ton central AC plant at DEC bldg, Zone-I -ditto-

All as per serial item no 66 above but for Air handling unit of 3x16 ton central AC plant at ETF vibration bldg -ditto-

All as per serial item no 66 above but for air handling unit of 5x66 ton central AC plant at AAG zone -ditto-

All as per serial item no 66 above but for Air handling unit of 3x25 ton central AC plant at Zone -II -ditto-

All as per serial item no 66 above but for air handling unit of 4x12.5 ton central AC plant at old RTRS, Zone – VIII-ditto-

All as per serial item no 66 above but for air handling unit of 3x13 ton central AC plant at Zone -III -ditto-

Repair and overhauling to air handling unit of central AC plants, dismantling of Air filters and cleaning the cooling coil with chemical and refixing the air filter after cleaning and testing and greasing the bearing of blower shaft etc complete all as specified and directed. The following AC Plant AHUs :- Air handling unit no.1 of 3x12.9 KW and 1x15.3KW VRV VRF type Central AC plant at EMI building ETF.

All as per serial item no 74 above but for air handling unit no.2 of 3x12.9 KW and 1x15.3KW VRV VRF type central AC plant at EMI building ETF complete all as specified and directed.

AAll as per serial item no 74 above but for air handling unit of 2x85 ton central AC plant at EMC bldg, ETF complete all as specified and directed.

All as per serial item no 74 above but for air handling unit of 2x18 HP VRV VRF type central AC plant at CADS bldg AAG zone complete all as specified and directed.

Servicing of cassette type/ hi wall split type indoor units of cap 1.28/2.0/3.18/1.5/2.0 TR installed at high pulse bldg Zone-IV from OEM/ authorised dealer of OEM complete all as specified directed.

Supply and fixing in replacement of suction/discharge oil pressure gauge / water pressure gauge of size 100 mm dia with pressure range 0-150 PSI/ 0-300 PSI complete all as specified and directed.

Overhauling to FRP cooling towers by draining the water, cleaning the scales and dirt, washing the PVC fills by opening and dismantling the CT fan , replacing the damaged fills with new ones, re-assembling and testing complete all as specified and directed. Note : New PVC fills shall be measured and paid as supply and fixing in replacement for separately under respective item of schedule.

Supply and fixing in replacement of PVC fills blocks for FRP cooling tower complete all as specified and directed.

Descaling of each condenser of central AC plant, dismantling of existing water pipe line , filling the descaling compound (Chemical RXSOL-41-8865-025) in condenser, flushing out the same after 24 hours, cleaning the condenser tubes with water by using nylon brush with rod to remove the scaling for AC plants 2x25 ton central AC plant at spark range, Zone-I complete all as specified and directed.

All as per serial item no 82 above but for 3x33 ton central AC plant at instrument bldg,Zone-I -ditto-

All as per serial item no 82 above but for 3x16 ton central AC plant at ETF vibration bldg -ditto-

All as per serial item no 82 above but for 5x66 ton central AC plant at AAG Zone-ditto-

All as per serial item no 82 above but for 3x25 ton central AC plant at Zone -II-ditto-

All as per serial item no 82 above but for 3x13 ton central AC plant at Zone -III-ditto-

All as per serial item no 82 above but for 3x12.5 ton central AC plant at old RTRS, Zone-VIII -ditto-

All as per serial item no 82 above but for 3x25 ton central AC plant at DEC bldg Zone -I -ditto-

Cleaning of fins type air cooled condensing unit of package type AC plant with caustic soda , after that flushing /cleaning the condenser coil and fins with water by using nylon brush to remove the dirt and scale for AC plants 2x11 ton package type AC plant at PFC bldg , SWS complex complete all as specified and directed.

All as per serial item no 90 above but for 1x11 ton package type AC plant at project office bldg, SWS complex and 2x11 ton package type AC plant at Zone-VII-ditto-

All as per serial item no 90 above but for 2x5.5 ton package type AC plant at Zone V -ditto-

All as per serial item no 90 above but for 4x16.5 ton package type AC plant at auditorium Zone I-ditto-

All as per serial item no 90 above but for 3x8.75 ton package type AC plant at workshop Zone I -ditto-

All as per serial item no 90 above but for 4x8.5 ton package type AC plant at auditorium, SASE, sec-37, Chandigarh -ditto-

Servicing of outdoor unit of VRV/VRF AC Plant from OEM / authorised dealer of OEM, cleaning the condenser coil and fins with water by using nylon brush to remove the dirt and scale complete all as specified and directed by Engr-in-charge for the following AC plants 6x12.9 KW VRV/VRF unit at EMI building ETF

All as per serial item no 96 above but for 2x15.3 KW VRV/VRF unit at EMI building ETF -ditto-

All as per serial item no 96 above but for2x 18 HP VRV/VRF unit at CADS bldg zone-I -ditto-

All as per serial item no 96 above but for 20 HP VRV/VRF unit at high pulse bldg zone-IV -ditto-

Supply and fixing in replacement display controller complete unit of package type /central type AC plants of various capacity complete all as specified and directed.

Supply and fixing in replacement HP/LP pressure cut out switch complete all as specified and directed.

Supply and fixing in replacement water flow switch 220 V AC 10 amps for condenser/chilled water complete all as specified and directed.

Supply and fixing in replacement finned strip heater having terminal at one end and two holes at another end for installation, 240 volt, 3 KW complete all as specified and directed.

Supply and fixing in replacement finned strip heater having terminal at one end and two holes at another end for installation, 240 volt, 2 KW complete all as specified and directed.

Supply and fixing in replacement finned strip heater having terminal at one end and two holes at another end for installation, 240 volt, 1.5 KW complete all as specified and directed.

Material and labour for preparation of old painted surfaces of MS / GI pipe line of condenser and chilled water and applying two coats of synthetic enamel paint on steel/iron surfaces complete all as specified and directed.

Material and labour for preparation of old painted surfaces of condenser water/chilled water monoblock pump sets of capacity upto 10 HP and applying two coats of synthetic enamel paint on steel/iron surfaces complete all as specified and directed.

Material and labour for preparation of old painted surfaces of control panels of AC plants of any capacity and applying two coats of synthetic enamel paint on steel/iron surfaces complete all as specified and directed.

Material and labour for preparation of old painted surfaces of chiller/package unit including condensers/ condenser fan assembly, compressors, frames, valves etc. of any capacity and applying two coats of synthetic enamel paint on steel/iron surfaces complete all as specified and directed.

Supply and fixing in replacement fan assembly with blade for FRP cooling towers as per sample of approved make complete all as specified and directed

Supply and fixing in replacement syphon with cock complete all as specified and directed.

Supply and fixing in replacement Industrial type thermometer complete all as specified and directed.

Supply, install, testing and commissioning of hermetically sealed scroll compressor of capacity 11.00 Ton compatible with R22 refrigerant gas , suitable for water cooled AC plant complete all as specified and directed.

Supply, install, testing and commissioning of hermetically sealed scroll compressor of capacity 8.5 Ton compatible with R22 refrigerant gas , suitable for duct able AC complete all as specified and directed.

Supply, install, testing and commissioning of hermetically sealed scroll compressor of capacity 5.5 ton 3 phase 440 volts compatible with R22 refrigerant gas , suitable for duct able AC complete all as specified and directed.

Supply ,installation, testing and commissioning of centrifugal monoblock type pumping set i.e chiller water pump having discharge capacity minimum 500 LPM at 45 mtr head coupled with electric motor 3 phase, 415 volt ,50 Hz of suitable capacity (approx 10 HP or above) to drive pump delivering water up to 45 mtr head and suction del pipe size 100mmx100mm ,mounted on common MS base frame including pcc foundation, nut, bolts etc complete all as specified and directed. Modal no-KDS -1030+ , make -Kirloskar

Supply, replacing, commissioning and testing of mono block water pump set electric driven 415 volt 1450 RPM (approx cap 7.5 HP or above) ,Kirloskar model no FEF42/XV-1004 suitable for existing suction/discharge 400 LPM and not less than 30mtr head suitable for condenser water complete all as specified and directed.

Material and labour for Insulation of M S pipe with PUF slab 30 mm thick with and including applying bituminous compound and aluminium cladding with 26 gauge aluminium sheet for MS pipes of following dia complete all as specified and directed: 50 mm dia

All as per serial item no 118 above but for 65 mm dia-ditto-

Supply and fixing for display board for electric shock treatment chart/ maintenance chart/ description chart of size 850x600 mm made out of CRCA sheet 2 mm thick with square pipe 35 mmx35 mm fixed around sheet by welding and making hanging arrangements on top of the board. Board shall be painted with two coats of stove enamelled paint (navy Blue) over a coat of red oxide primer and writing the detail with fluorescent reflective tape (as per sample) by digital computerized printing style complete all as specified and directed.

Supply and fixing synthetic insulating rubber mat of size 2 metre x 1 metre x 19 mm (ISI marked) suitable for control panels of AC plants complete all as specified and directed.

Supply and fixing in repairs MCCB rating 100 Amps, 4 pole, 415 volts breaking capacity 16 KA complete all as specified and directed.

Supply and fixing in repairs MCCB rating 125 Amps, 4 pole, 415 volts breaking capacity 16 KA complete all as specified and directed.

Supply and fixing in repairs MCCB rating 200 Amps, 3 pole, 415 volts breaking capacity 36 KA complete all as specified and directed.

Supply and fixing in repairs MCCB rating 250 Amps, 3 pole, 415 volts breaking capacity 36 KA complete all as specified and directed.

Supply and fixing in repairs MCB TPN rating 40 Amps, 4 pole, C-type, 415 volts breaking capacity 10 KA complete all as specified and directed.

Supply and fixing in repairs MCB TPN rating 63 Amps, 4 pole, C-type, 415 volts breaking capacity 10 KA complete all as specified and directed.

Supply and fixing in repairs MCB TP rating 40 Amps, 3 pole, C-type, 415 volts breaking capacity 10 KA complete all as specified and directed.

Supply and fixing in repairs MCB SP rating 6-32 Amps, single pole, 240 volts complete all as specified and directed.

Supply and fixing in repairs MCB SPN rating 40 Amps, single pole neutral, 240 volts complete all as specified and directed.

Taking out old unserviceable power/auxiliary contactor from control panel / starter and supply and fix new power contactor of following size and capacity complete all as specified and directed. Note :-Power contactors of AC3 rating 12 Amps MNX type.

All as per serial item no 131 above but for power contactors AC3 rating 22 Amps ML type -ditto-

All as per serial item no 131 above but for power contactors AC3 rating 32-40 Amps ML type -ditto-

Taking out old unserviceable timer switches from LT panel / starter and supply and fix new timer switches timer switch range 0 to 60 second complete all as specified and directed.

Supply and fixing in replacement of terminal block connector complete all as specified and directed.

Supply and fixing in replacement phase failure relay with fixed under and over voltage cut out complete all as specified and directed.

Supply and fixing in replacement digital volt meter, complete all as specified and directed.

Supply and fixing in replacement digital ampere meter, complete all as specified and directed.

Supply and fixing in replacement single phase preventor complete all as specified and directed.

Supply and fixing in replacement On / Off push button with lense complete all as specified and directed.

Supply and fixing in replacement compressor motor protector relay 22 A,240V reset delay 30 min + 5 min complete all as specified and directed.

Supply and fixing in replacement time delay relay range 0-30 Sec complete all as specified and directed.

Supply and fixing in replacement temperature control switch complete all as specified and directed.

Supply and fixing in replacement indicating light universal complete all as specified and as directed.

Supply and fixing in replacement toggle switch 15 amps complete all as specified and directed.

Supply and fixing in replacement thermostat for heating control range 0-30 degree centigrade complete all as specified and directed.

Material and labour for painting to existing AC installations sign board of size 1.2 metre x 1.0 metre with two coats of synthetic enamel paint approved colour over a coat of primer and writing letters in 4 inches sizes and colours as required including scrapping out old rusted paints complete all as specified and directed.

Overhauling/servicing of voltage stabilizer of capacity 15 KVA/20 KVA 3 phase by checking of PCB plate, main transformer, control transformer, servo motor, dimmer and resistance port etc and making necessary adjustment by replacing screw, lugs, soldering of loose connection, wiring etc. Complete all as specified and directed. Note :- Spare parts shall be measured and paid for separately under respective items.

Supply and fixing in replacement PCB complete all as specified and directed.

Supply and fixing in replacement digital volt meter square type 0 to 300 volt complete all as specified and directed.

Supply and fixing in replacement servo motor 220 volt 3 Kg torque, 60 RPM complete all as specified and directed.

Supply and fixing in replacement resistance port complete all as specified and directed.

Supply and fixing in replacement control transformer complete all as specified and directed.

Material and labour for earthing complete with galvanised steel earth plate electrode 60cm X 60cm X 6.0mm thick, buried directly in ground (earth pit not less than 2.25 mtr deep below normal ground level) with top edge of the plate not less than 1.5mtr below normal ground level connected to GI earth strip of size 32x6 mm by means of bolts, nuts, check nuts and washers of galvanised iron complete earth pit of PCC M-10(nominal mix) using 20mm graded stone aggregate, 50mm thick earth pit cover of RCC M-15 (nominal mix) using 20mm graded stone aggregate with MS TMT reinforcement bar of 8mm dia @ 150mm centre to centre both ways, MS handle 10mm dia made to shape, PGI funnel, wire mesh and 20mm bore GI water pipe medium grade and 40mm bore light grade GI pipe for protection of earth strip from plate to main switch board, common salt, charcoal dust including testing on completion complete all as specified and directed all as shown in electrical plate No. 5 including testing on completion and making good the disturbed surfaces of wall floors etc without claiming extra cost complete all as specified and directed. Note: GI strip and GI pipe beyond 7.5Mtr length from earth electrode shall be measured and paid for separately.

Material and labour for earth continuity conductor size 32x6 mm galvanized iron strip complete all as specified and directed.

Supply and fixing rotational moulded polyethylene water storage tank of storage capacity 1000 litres (cylindrical vertical with closed top) hoisted and fixed in position including fixing of inlet and outlet pipes, float valves and other necessary accessories complete all as specified and directed.

Supply and fixing chicken wire mesh of medium SS material , hexagonal weave type, fine finish suitable for cooling tower protection including all necessary nuts, bolts, screws, washers etc. complete all as specified and directed.

Material and labour for insulation of MS chilled water pipes of any size with class 'O' nitrile sheet of thickness 25 mm having factory evaporated aluminium foil using suitable adhesive of approved make and sealing all the longitudinal joints and circular overlaps with suitable ALP tapes 50 mm x 3 mm complete all as specified and directed

Supply and fixing in replacement 50 mm thick washable type pre-filters with filter element made out of synthetic non-woven media supported by HDPE mesh on both side including stitching in diamond pattern complete including frame, suitable for efficiency 90% down to 10 micron EU-3 Type complete as sample with mounting frame work complete all as specified and directed.

Supply and fixing in replacement solenoid coil AMG type 120-240 volts complete all as specified and directed.

Material and labour for repair of PCB of control panels of chilling units/package units/VRV VRF unit of any capacity including checking the components, replacing damaged components with new ones, making the PCB fully functional till Engineer-in-Charge's satisfaction complete all as specified and directed.

Taking out old unserviceable thermal overload relay from LT panel/control panel/starter and supply and fixing new thermal overload relays ML type of any range as per existing complete all as specified and directed.

Supply, install, testing and commissioning of sealed unit compressor of cap 1.5 Ton after taking down defective compressor from foundation and making connection with suction/discharge of the AC capacity 1.5 Ton complete all as specified and directed.

Supply and fixing in replacement of refrigerant dryer filter of various size/capacity as per sample for water cooled central AC plant complete all as specified and directed..

Supply and fixing in replacement of refrigerant dryer filter of various size/capacity as per sample for package type AC plant complete all as specified and directed..

Taking out old unserviceable chiller water sensor of any size/cap and supply and fixing of new chiller water sensor as per sample complete all as specified and directed..

Supply, programme , testing and commissioning of AC drive, 5.5kW ,V/F control, input 3- phase, 415Volt, AC, output 3 phase, 415Volt, AC for control AHU motor of VRV/VRF AC plant and chiller plant complete all as specified and directed. MAKE- YASKAWA/Delta / ABB/Siemens

Supply, programme , testing and commissioning of AC drive, 2.2kW ,V/F control, input 3- phase, 415Volt, AC, output 3phase, 415Volt, AC for control AHU motor of VRV/VRF AC plant and chiller plant complete all as specified and directed. MAKE- YASKAWA/Delta / ABB/Siemens

Supply, install, testing and commissioning of cooling tower of capacity 40 TR based as a existing pattern including join with existing pipes suitable for water/air cooled AC plant including dismantling of old one complete all as specified and directed .

All as per serial item no 170 above but for of capacity of 30 TR complete all as specified and directed.

Material and labour for shifting of cooling tower of capacity 20 TR from any height and location and reinstall the same on a another location with working condition including dismantling of old one after making necessary cutting/joining on pipes/PCC/grills e.t.c. as per requirement of users, complete all as specified and directed. (Note:- during shifting any parts of items caused to damage/broken, contractor repair/replace the same with new one.)

Singh Associates (BID ID -3496027)

Esha Engineers (BID ID -3502198)

SANJEEV ENTERPRISES (BID ID -3500438)