REPAIR AND MAINT OF CENTRAL AC PLANT INCLUDING REPLACEMENT OF UNSERVICEABLE SPARE PARTS AT ARMY AREA RALAWAS UNDER GE BANAR

Amount

Preventive maintenance/routine checking of central AC plant equipments like Chiller system, AHU, cooling tower items, motor/pump sets, LT control panel and other various connected machinery /equipments and rectify minor defects during checking by exeperienced high skilled refrizeration mechanic OR reported to concern JE /Engr-in-Charge if major defects noticed. Contractor shall be arranged/deployed a exeperienced high skilled refrizeration mechanic as on required for the above routine checking of central AC plant as directed by Engr-in-Charge. The following mechinary/equipments are to be checked during site visit for preventive maintance of central AC plant:- A. EQUIPMENT DETAILS - a) Chiller Sysem : 3 Nos. Capacity : 85 TR. Compressor Make & Model : Danfoss , SY300A4PBE (3x4 Nos.) Motor rating : (3x15)HP. b) Condensor Water pump : (3x4Nos). Make & Model : Mater Platt, 125*100-250, ET-150 19. Motor rating : 3Nosx9.3 KW. c) Chilled Water pump : 2 Nos. motor rating : 5.5 KW. d) Air Handling Unit : 15 Nos. Make & Model : As per Exisiting. e) Cooling Tower: 3 Nos. Make: Suthern (f) Other Connected Equipmets to all above Central AC plants as under- i) Refrigerant controls like Pressure Gauges, Pressure switches, Thermostats & Solenoid valves. ii) Chilled water pipe lines & its control valves. iii) Connected air ducting, dampers, grills, air diffusers and insulation both acoustic and thermal. iv) Connected instrumentation, controls & cabling and filling of refrigerant as existing. Note:- Check list of above mentioned equipments are enclosed in PS clause. (B) Recovery for Non timely deployment of Trademan:- (a) The quoted rate is deemed to be inclusive of Attending to emergency complaints/break-down by employing Ref Mechanic/trademan as required within the quoted rates. (b) Contractor will be informed telephonic call /SMS/What's up chat for deployment of trademan. After getting information to contractor, trademan shall have to be deployed wihin 24 Hrs. If trademan will not report within one day, the recovey @Rs 650 per day (Maximum recovery 10000/- per event) for non provide of trademan services will be imposed against contractor bill (in next RAR) by the Deptt. (c) The firm will has to attend the unscheduled service calls as and when required for locating the faults and rectify the same immediately. The contractor should attend the breakdown of plant on priority basis. Records of the break down should be maintained by him as directed by Engr-in-Chief. Efforts should be made to restore working of plant so that regular air conditioned supply to users is maintained. If need be, the extra workmen shall be arranged by the contractor within quoted rates. (d) The corrective/breakdown maintenance is to be carried out any time during 24hrsX 365days inclusive of all Sundays & Holidays. (e) Replacement of spare parts will be measured and paid seperately under relevant items of schedule.

M&L for strip opening of condenser cover of both sides including disconnecting of water pipe lines for inlet and outlet of the condenser of each plant. Removing scale/sludge precipitated in the copper tube by push and pull method with iron rod connected with steel wire brush of suitable size as per condenser copper tube size at the entire length of condenser and scraping down the sludge precipitated inside the tube. Closing both side of condenser and circulating the descaling solution, supplied in sealed containers, by mono block pump set after mixing it in water in ratio of 1:5 in all tubes of three condenser of each plant through the circulating pump and allow to hold it for 30 minutes for chemical reaction. Opening the condenser from both sides and clean with iron rod connected with nylon brush of suitable size as per condenser copper tube size at the entire length of condenser ensuring that descaling process has been complete; then closing the condenser at both ends and circulating clean water in all the tubes of three condensers of each plant and draining out the same. These processess have to be continued till the tubes are of scales to the complete satisfaction of Engr-in-Charge including fixing new gasket for both ends of the three condensers of each plant, tighten with new nut end bolts. The job also includes Material and labour for making leak proof refrigerent system by vaccumising with in 7.6 mm HG carried out using N-2 gas and maintaining for three hours; at the end of this period vaccum should be maintained for 24 hours complete all as specified and directed by Engr-in-Charge for AC plants of 3X85TR capacity. Note :- (a) Supplying the chemical solution for descaling solution for descaling is included in the unit rate quoted. (b) Strength of descaling solution shall be measured with pH paper and if the strength is less than 30%, then the descaling has to be done again by the contractor at his own cost to achieve the desired level of pH and nothing shall be payable extra on this account.

Supply ( in company sealed cylinders of any capacity) and charging refrigerent gas R-22/R407C for filling in 3 x 85 TR AC compressor as per requirment complete all as specified and directed by Engr-in-Charge. Note: If the recharged refrigerent gas is leaked within 45 days of running of AC plant, the contractor shall recharge gas (including supply) without any extra cost to department.

M&L for topping up/charging compressor oil non freezing type in factory sealed containers in compressor units complete all as specified and directed by Engr-in-Charge.

Supply and fix in replacement 'V' Belt as per sample of existing specifications complete all as specified and directed by Engr-in-Charge. Make: Fenner/ Dunlop. (i) S&F V Belts of size A-26 complete

M&L for disconnecting, strip opening, taking down burnt out motor from its base and transporting the motor to the Contractor's workshop and back. Refixing, testing and commissioning the same on full load, after carrying out the following repairs - (i) opening the side covers and removing the rotor and cutting/ removing the burnt coils / winding from stator, (ii) Cleaning the slots carefully, (iii) Rewinding the stator using super enamelled copper conductor wire with same size, number of coils, number of turns / coils as per data acquired from the old burnt motor, including varnishing of two coats, drying using electric furnace, (iv) Testing the coils for there continuity and no current passing through the stator core, (v) Dynamic testing of the rotor and alignment of the main shaft and ensure that no imbalance vibtrations, (vi) Re-assembling the rotor and connecting the end terminals to the terminal plate of the motor, closing the ends with side covers. (vii) Testing and commissioing the electric motor connecting to the electric supply to its full load by connecting the compressor, (viii) Renewal of Bolts, nuts and washers for motors of following size - Note :- Parts renewed i.e Ball bearing shall be measured and paid separately. However filling of grease and oiling extra shall be deemed to be included in Unit rates:- (a) 15 HP

Strip openining of existing Monoblock pump set with motor 1.5 HP to 15 HP, 3 Phase, 415 Volts, servicing of pump and motor by opening of pump, machining of pump shaft, renewal of gaskets, gland packing, Gun metal bushes, greasing of bearing complete all as specified. Note:- Ball bearing renewed and motor winding shall only be measured and paid separately.

Taking out unserviceable pipes, Supply and fixing Mild Steel medium grade pipe 32mm to 150 mm dia connecting, welding, smoothing and making leak proof all as per site requirment and as directed by Engr-in-Charge including testing complete. Make-Jindal/Swastik/Tata:- (a) 32mm dia MS pipe

(b) 50 mm dia MS pipe

(c) 125mm dia MS pipe

(d) 80 mm dia MS pipe

(e) 100mm dia MS pipe

(f) 150mm dia MS pipe

S&F for application and testing of external thermal insulation of Class "O" (conforming to BS 476 Part 7) on ducts/pipes with not less than 25mm thick nitrile rubber having density of 32 Kg/cum and having thermal conductivity not exceeding 0.035 W/mK at an average temperature of 45 Centigrade complete all to the satisfaction of Engr-in-Charge.

All as per serial items 18 here-in-before but 9mm nitrile insulation.

Complete removing of paint from old painted surfaces of steel and preparation of steel surfaces of AC plant 3x85 TR complete including all pipe lines, condensers, pumps, motors, panels, etc. of any dia or size and including application of two coats of synthetic enamel high glow paint 1st grade make Berger over a coat of red oxide primer by spray painting of existing colour including writing down the MES No./SM No. while taking necessary steps to stop spreading of paint on manufacturers stickers and plates complete all as specified and directed to the complete satisfaction of Engr-in-Charge.

M&L for strip opening of blower shaft of AHU of existing capacity by removing the belt and pulley, blower drum, dismantling the shaft and carrying out the necessary jobs including transportatons to & fro like welding, turning, grinding, etc. to have it's original dimension including balancing of the shaft and refitting it in AHU and including reassembling the blower, pulley, etc with new bearing of existing size, testing and commissioning the AHU for satisfactory operation complete all as specified and as directed. NOTE - Bearing to be replaced will be paid and measured under the relevant item of this schedule.

Removing of all Alpha filters of AHU from their positions and laying out the filters at site for refixing after cleaning them including cleaning of AHU cooling coil using chemical with water jet/ brass brush in-order to remove all type of sludge/dust precipitated on the coil and filter without any damage to the copper cooling coil and then washing the cooling coil with fresh water and then air blowing the same to the complete satisfaction of Engr-in-Charge. Cooling coil drain water line shall be clean, if any type of obstacle is there in the flow of water, iron body of the AHU inside and outside shall be scrapped down and rubbed out with sand paper including applying one coat primer over a coat of synthetic enamel paint including part of duct portion in the AHU all to the complete satisfaction of Engr-in-Charge.

Taking out the 01 Nos defective compressor of 21.25 TR from its foundation after on screwing nut bolts, chiller pipes and power cables etc safely and transported to its authorized service centre for repair from AC plant room and back. Material & Labour for repair /replacement of scroll type compressor 21.25 TR Make : Blue Star from 85 TR (4x21.25TR) Central AC plant by the OEM or its authorized service centre including all spare parts except refrigerant and oil required for repair the same. Refixing in original state, connected all the nut/bolts, pipes/cables etc after carry out necessary repair / replacement and testing /commissioning on load all specified & directed. Note: (i) Refrigerant and compressor non freezing oil as per existing shall be measured and paid separately in relevant items of schedule (ii) Transportation and other spare rates deemed to be inclusive of quoted rate by the contractor.

Supply and fixed canvas ducting cloth for supplying cooled air from AHU to insulated duct (plenums acoustic) including sealed gland & binding clips complete.

Supply and fixed supply /return air grill of duct size 700x250 mm or as per existing size complete

Supply and fixed supply /return air grill of duct size 1000x300 mm or as per existing size complete

(j) Replacement of worn out main bearing as per sample- 01 No (Note: Replacement include supply and fix of new part and taking down old and unserviceable part).

M&L for fabrication, supplying, fixing and commissioning of informatory boards at E/M installation to display the technical details as provided by Engr-in-Charge of various installtions made out of 3 mm thick aluminium composite panel (ACP) fully covered with white/green/blue (as directed) Retro refective sheeting of nikkalite Brand Ultralite (UL) grade with using pressure sensitive adhesive and Retro Reflective cut out border and message in the sensitive adhesive, size of the board of required size to be fixed on wall incl proper fixing arrangement complete all as specified and directed. Note :- (a) Before fabriction of the board, the contractor has to produce a paper printout detailing all dimensions and matter to be displayed so as to get it inspected and passed by Engr-in-Charge. (b) Matter to be displayed, colour of the ACP sheet and colour of Retro Reflective sheet will be as specified and directed by Engr-in-Charge. (c) The quoted rate is deemed to be inclusive of cost of the labour and materials required for fixing of the informatory board at the location as specified and Engr-in-Charge.Electronic schematic diagram alongwith design condition (Temp and Humidity) of AC plant to be displayed in the plant room all as specified and directed.

M&L for Painting on all chiller & condenser pipes with colour code & Marking of flow of fluids/gas on Chillar plant/pipes inside the pump room all as specified and directed.

M&L for Servicing of exisiting various size of motors & pump sets and compressors of central AC plant including greesing of DE/NDE side & cleaning to remove any scales, dust particles, grease, oil marks etc complete all as specified and directed.

M&L for Pressure testing of entire system of AC plant comprising of three set of condenser, compressor and circulating system with CO2/Nitrogen gas and retain the gas in the system for three days. After three days checking the system to check for any leakage or reduction in the scale of pressure. If any leakage(s) is (are) found, it(they) shall be located and arrested by soldering or by taking an appropriate measure(s) to stop the leakage permenantly.

Dismantling inlet & outlet connection of water pipe lines, wiremesh all-around the cooling tower, PVC fins, CT fan and motor, PVC water storage tank and incoming connection of electric supply and other related items all as per site requirement complete.

Cleaning the cooling tower by scraping with 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 wiremesh, main shaft, etc and other connected items all as specified and directed by Engineer-in-Charge.

S&F in replacement fresh air ventilator made out of grill and angle iron frame with louvers on AHU without any damage to the existing wall and finishing the surfaces to match with existing one, complete all as specified and directed by Engr-in-Charge.

Servicing and maintenance of Rapid cool cap 110 KW Hot water generator complete by opening the existing assy and draining out complete water including cleaning of the connected components like container, checking of serviceability of heating element, pressure gauge, etc. and reassembling and testing the same after replacement of unserviceable spares all as specified and as directed. NOTE - Spares to be replaced will be measured and paid separately under the relavant items of this schedule.

Supply only heating element suitable for 22 KW, 3 phase 415V, 50Hz or as per existing.

Supply only timer and other connected accessories.-01set

Supply only thermostat

Taking out old insulation material over a pipe/ducts supply and fixe thermocol - 50mm with chicken and wire mesh, 15mm thick plaster with cement mortar 1:6 including marking of arrow for flow direction finish exposed surface of pipe complete liquid all as specified and directed by Engr-in-Charge. Note : Earthwork shall be measured & paid separately.

S & F of electric actuator of Moder No R-981-R of Rapid control Make in chiller pipe line 24 volts AC/DC 22Nm & all connected items or as per existing complete all as directed by Engr-in-Charge.

Taking down unserviceable AC duct and Supply ,fabricating, assembly and erection of galvanised sheet of 24 gauge with C & SS 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 seal to make leake proof and on longitudinal joints etc complete all as directed by Engr-in-charge.

Supply & fix water pressure gauge 0-150 Kg/sq cm suitable for fixing with 150 mm dia water circulating inlet & out let pipe by means of proper welding and connection with checking the running water pressure as per specification all as directed by engineer in charge. Make H Guru or equivalent of approved make complete all as specified and directed.

M&L for replacement of water temp gauge dial type 0-120 degree F make H Guru or equivalent of approved make complete all as specified and directed

Supply and fix flexible rubber coupling for 85TR compressor & upto 20HP elecric motor, 415volts, 3 phase of existing specification complete all as specified and directed by Engr-in-Charge, Make Unique.

Supply & fix CT coil rating 50-250/5A & 200/10A, 415 volts of as per existing specification and make including taking down complete all as specified and directed by Engr-in-Charge.

Supply and fix in replacement ON/OFF Push button switch with two push buttons of existing specification complete all as specified and directed by Engr-in-Charge. Make:L&T/GE/SIEMENS.

Replacement to pre- filter, pleated EU4/G4 type, GI frame, media-non wooen synthetic media + alluminium jalli, efficiency 90% down to 10 Micron size 590mm x 590mm x 50mm or as per existing for central AC plant AHU in case of worn out U/S filter component at the descreation of Engr-in-Charge, tendered will replace the said filter with new one without any price adjustment complete all as specified and directed by Engr-in-Charge.

Replacement to pre filter, pleated EU4/G4 type, GI frame, media-non wooen synthetic media + alluminium jalli, efficiency 90% down to 10 Micron size 590mm x 290mm x 50mm or as per existing for central AC plant AHU in case of worn out U/S filter component at the descreation of Engr-in-Charge, tendered will replace the said filter with new one without any price adjustment complete all as specified and directed by Engr-in-Charge.

Supply and fix in replacement indicator holder copmplete with lamps for RYB phase, 415 volts, 50 HZ AC complete all as specified and directed by Engr-in-Charge.

Supply and fix in replacement Electronic sensor suitable for 85 TR compressor unit (for chiller & condenser unit) of existing specifications and make complete all as specified and directed by Engr-in-Charge.

Supply and fix in replacement of microprocessor electronic control card chiller PCB suitable for 85 TR Scroll chiller Cat part No EACOZ0060 of existing specifications and make complete all as specified and directed by Engr-in-Charge.

S&F (in repairs) thermostatic expansion valve of 21.25 TR working compressor on R-407C (Ecofriendly) suitable for AC plant ( Make - Blue Star) including collecting the refrigerant in the empty cylinders arranged by Contractor at his own resources by any means , cutting, welding, brazing, renewal of gasket, nuts, bolts and washers etc. complete all as specified and directed.by Engr-in-Charge.

Renewal of High pressure and low pressure control (HP&LP) switch suitable for water Cooled central type AC unit as per sample complete all as specified and directed.by Engr-in-Charge.

S & F heating element over the surrounding body of scroll compressor of 21.25 TR capacity as per existing rating complete all as specified and directed.

Supply and fix in repair Thermometer 0-60 Degree centrigrade suitable for fixing with 150 mm dia water circulating pipe by means of proper welding and connection with checking the running water temperature as per specification all as directed.by Engr-in-Charge.

M&L for digital type electronic temperature meter sensing the temperature from in side the user room and display on outside the AHU including input power supply rectifier circuit input voltage -220V and output voltage 24V DC with 1 Amp wiring for sensing cable in case and copping, complete all as specified and directed.

Supply and fix in repair suction pressure sensor suitable for 85 TR AC plant Make: Blue star,

Supply and fix in repair discharge pressure sensor suitable for 85 TR AC plant Make: Blue star,

Supply and fix in repair oil pressure sensor suitable for 85 TR AC plant Make: Blue star,

S&F air flow switch suitable for Central/ package type AC plants complete all as specified.

S&F anti freeze switch suitable for Central/ package type AC plants complete all as specified.

M&L for replacement of water flow switch type, IPS industrial pressure switch complete all as specified and directed. make : INDFOSS or equivalent as approved.

S&F in repair single phase preventer 230 Volts. Make : L&T/Siemens/Minilec/Havells/ABB/C&S

S&F ball wearing of different type of motor /pump upto 15HP capacity or as per existing.

Taking down old unsv fins/cells of cooling tower and supply and fix PVC fins(honey comb) as per existing (600x600x300mm or 600x600x150mm) thickness suitable for fiber glass cooling tower complete suitable for upto 85TR of AC plant as specified and dirtected

M&L PVC eliminator from colling tower of capacity 3x85 TR complete all as specified and directed by Engr-in-Charge.

Supply and fix in replacement air release valve of gun metal 15 mm dia of existing specification and make complete all as specified and as directed by Engr-in-Charge.

Supply and fix in replacement butterfly valve with handle made out of brass/gun metal of 150 mm dia of existing specification and make complete all as specified and as directed by Engr-in-Charge. Make : LEADER/SANT

Supply and fix in replacement butterfly valve with handle made out of brass/gun metal of 125 mm dia of existing specification and make complete all as specified and as directed by Engr-in-Charge. Make : LEADER/SANT

Supply and fix in replacement butterfly valve with handle made out of brass/gun metal of 50 mm dia of existing specification and make complete all as specified and as directed by Engr-in-Charge. Make : LEADER/SANT

Supply and fix in replacement dryer for liquid line 5/8'' Sutaible for 85 TR compressor complete all as specified and as directed by Engr-in-Charge. Make : DANFOSS/Elofic

All as per items No 76 here-in-before but 32mm dia.

Complete removing of paint from old painted surfaces of steel and preparation of steel surfaces of AC plant cooling tower of 85 TR complete including all pipe lines of any dia or size with accessories, and applying two coasts of synthetic enamel paint over a coat of red oxide primer by spray painting to protect extra spreading paint from manufacturers stickers and plates complete all as specified and directed.

S&F First Aid chart with clear glass cover & wooden frame complete all as specified and directed and as per sample.

Materials and labour for fabrication,supply and errection of bakelite flex display boards made out of MS square pipe frame of as per requirment of site size cover all 4 sides covered with powder coated CRCA sheet & back side covered by galvanised sheet of 24 guage. Front open box type with front side covered by flex board bakelite with digital printed letters and figures as requred The board shall be cubical type with screw fittings for opening and closing front side for maintenances. using MS channel for beading including inside electrical wiring comlete with LED T/L Fitting 20 Watt as directed with starter, electronic ballast switches and necessary fixing arrangement, Size of the board 6 feet X3 feet X 8 inches with 4 Nos LED light as per the site requirement on roof, wall etc all as directed by Engr-in - Charge.

Supply and fix in replacement solinoid coil suitable for 3x85 TR compressor complete all as specified and directed by Engr-in-Charge. Make : Alcho/Danfoss or as per existing.

Service of servo auto manual voltage stabilizer of capacity 300KVA 415 V 3 phase opening the existing ssy and cleaning of the connected components,Checking electrical wiring connection,checking of serviceability of Contractor ,coil etc. and reassembling and testing the same after replacement of unserviceable spares all as specified and as directed. NOTE - Spares to be replaced will be measured and paid separately under the relavant items of this schedule.as directed by Engr-in-Charge.

(a) Contractor kit 4 Pole AC 415V as per existing rating upto 80 Amp

(b) Coil 4 Pole AC 415V as per existing rating upto 80 Amp

M&L for filteration / dehydration of transformer oil at site so as to achieve diaelectric strengh not less than 30kv when tested at 4mm air gap.

Supply and filling transformer oil of diaelectric strengh not less than 30KV in topping up level of voltage stabiliser.

M&L for Angle iron /bar/frame for fabrication of stands, railing, ladder & other misc items including welding work cold & hot drilling works including nut bolts washers etc with two coats of synthetic enamel paint over a coat of primer complete all as specified and directed.

M&L for cleaning of voltage stabilizer body with cleaning agent carefully of capaciity 300 KVA installed on platform and painting two coats of synethtic enamel paint of approved makes all as directed by Engr-In-Charge.

S&F MNX-A2 type power Contactor, 3 pole, 415 V, 50Hz, with auxulary Contact 2 NO+2NC suitable for Non-Inductive or Slightly Inductive ,Resistive Load (AC1- up to 80 Amps rating with the existing complete all as specified Make : L&T .

S&F power Contactor, 3 pole, 415 V, 50Hz, with auxulary Contact 2 NO+2NC suitable for Non-Inductive or Slightly Inductive ,Resistive Load (AC1- uptp 80 Amps rating as per model No LC1DT32 the existing complete all as specified Make: Schneider.

S&F replacement by fixing of control Voltage contactor mechanical interlocks horizontal mounted & configuration 415 V, 50HZ, AC 1NO+1NC suitable for water cooled chiller Control penal AC Coil controler make :- Siemens/L&T, all as specified and directed by engineer in charge.

Supply and fix in repair 3 pole power contactor rated current AC1 32A and AC3 32 A with auxiliary contact block, 3 phase 415 volts, with coil voltage 220 volts complete as per existing model all as directed. Make : Siemens/L&T/Schenider/Legrand/ABB/C&S

Supply and fixing front mounting add-on-aux control block MNX/MCX 9-80, MCX 01-23 CS 94114 of L&T or as per existing size

Supply and fixing motor protection circuit braker (MPCB) rotary type with over load + short corcuit protection rating upto 30 Amps cat No ST419140000 of L&T or equivalent

Supply and fix in repair Over load relay Typ MN-2 range 9 Amp to 25 Amp complete all as directed. Make L&T or equivalent/Siemens/Schenider/Legrand/ABB/C&S

Supply and fix in repair Over load relay Typ MN-2 range 3 Amp to 8 Amp complete all as directed. Make L&T or equivalent/Siemens/Schenider/Legrand/ABB/C&S

Only free of fixing various type of MCCB 4 Pole/3Pole and MCBs issued by department . Note: Old taking down MCCB deposit to EM store yard .

Material and labour replacement ammeter 0-300 Amps rectangle shape of size 96qmm, 3phase, 50 Hz AC with suitable CTs for AMF panel complete all as specified and directed by Engr-in-Charge. : Make : AE /L&T

M&L for replacement of multifuction meter various size of 3phase, 50 Hz AC suitable with CTs for AMF panel complete all as specified and directed by Engr-in-Charge. : Make : AE /L&T

Supply and fix in replacement Volt meter 0-500 volt, rectangle of size 96x 96 qmm 3 phase 440 volt, 50 Hz AC of existing specification and make complete all as specified and as directed by Engr-in-Charge. Make : AE/L&T/SEIMENS

S&F 4 Pole contactor coil 240 V 50Hz suitable for MCX44 Make : L&T cat No CS94195

S&F 4 Pole contactor Kit 240 V 50Hz suitable for MCX44 Make : L&T

S & F contactor coil and its kit complete set for ML2 make : L & T

M&L for Plaster of Paris 30mm thick over insulated pipe of dia 80mm to 150mm of Chilled water pipe of AC Plant above ground level as per specified as dirtected

S&F air Purzzer Valve of suitable size as per existing as specified

M&L for Iron grill/sheet or iron angle of 3mm thick for fixing of motor/pump foundation installed at various places (AHU,Pump) or making tranch/duct over Plate including necessary welding work at site as required

M&L for cutting copper rod for gas wlding of copper tube including copper ro/ suitable material during fixing of thermameters, pressure sensor & refrigerant dries etc. complete all as specified

M&L for replacement of chocked copper tube of size 15mm dia complete all as direted by Engr-in-Charge.

INDO CONSTRUCTION