CA NO CWEAFJ-34/2025-26 REPAIR/MAINTENANCE OF VARIOUS TYPE OF AC PLANTS AT AF STATION JAMMU AND KALUCHAK UNDER GE (AF) JAMMU

Amount

Material and labour for servicing of AHU Floor mounted of 45000 CFM ,42000 CFM and 30000 CFM capacities installed at UGBO ,station auditorium & Alternate ATC including washing of coils with descaling chemicals and pressure pump including cleaning of drain pipe all as specified. The job includes dusting of all filters as well as cleaning of the outer filters and inner filters with proper cleaning of the AHU body with all necessary equipment and apparatus. The AHU room must be dust free after servicing of AHU. NOTE : The work shall be carried out by the authorized service representative of the OEM.

Servicing of AHU of different capacity for air blower installed at SNCOs mess and DSC mess including washing and cleaning of coils with chemical and pressure pump including dusting of all filters with proper cleaning of AHU body with all necessary arrangement including cleaning of drain pipe all as specified and directed.the AHU room must be dust free after servicing of AHU. NOTE : The work shall be carried out by the authorized service representative of the OEM.

Comprehensive maintenance of Package type AC Plant installed at technical area of GE AF Jammu through authorised agent of original equipment manufacturer including carrying out preventive maintenance and servicing as per manufacturerer's manual, repair and overhauling, descaling of compressor,condenser tubes/ cleaning of filters, cooling coils, detecting and arresting of leakages of air/gas/lubricants/fuel etc, attending breakdown and rectification of all type of defects including electrical, electronic circuits & drives, mechanical and refrigeration/air conditioning including taking down unserviceable parts, spares as and when required for the following Plants all as specified and directed by Enginner-in-Charge: - (A) Location: Technical area of GE AF Jammu (a) Package Type AC Plant 34 TR Make : Blue Star (b) Package Type AC Plant 33 TR Make: Voltas

Notes: (a) Original copy of purchases, order placed to dealer of OEM and paid vouchers along with servicing report shall be submitted to Engineer-in-Charge before payment. Servicing shall be carried out strictly and if contractor fails to execute this item, department will be carried out this work through on its own (or other agency) and any expenditure occured will be recovered from this contract. (b) HCL, Chemical and T & P required for cleaning and descaling and nut, bolts, washers, distilled water, shall be included in the unit rate quoted against this item. (c) Spares replaced will be measured and paid separately under respective Items. (d) Breakdowns shall be attended on priority as and when occured and rectification of defect shall be carried out in less than 24 Hrs for minor inhouse repairs and within 01 Week for measure repair or which require Machine/Plant to be shifted to workshop. (e) The work shall be carried out by the authorized service representative of the OEM.

Material and labour for opening and dismantling both sides covers of condenser and descaling of condenser unit for AC plant of 113 TR & 104 TR & 75 TR capacity installed at UGBO , Auditorium and alternate ATC by pumping descaling chemicals with descaling pump, brushing with rods, cleaning/ oiling of tubes, replacement of gasket and reassembling it after descaling complete all as specified and directed by Engr-in-Charge. Note :(i) The descaling of the condensers of the plant will be carried out by the authorised service representative of the OEM. (ii) Descaling done quaterley.

M&L for leakage testing and gas charging including checking of leakage in both low and high side of the system by feeding dry nitrogen to maintain adequate pressure in the system, restoring the leakages including replacement of teflon sealings of all refrigerant link valves liquid lines, suction line, dicharge line of compressors, gland packages of all angle valves flaring of all connections etc for 33//35/75/104/114 TR compressor all as specified and directed.

Material and labour for proper cleaning of cooling tower fins,treatment of water if necessary,cleaning and descaling of deposited sludge in pipe with proper chemical along with cleaning of strainer,inspecting of starter coils/strainers,tighten all electrical connections including lubrication of bearings of motor,proper alignment of cooling tower fan blades and clean dirt accumulation on blades,proper cleaning of spreay nozzles,Inspect for corrosion and wear of baffles and cleaning and inspecting corrosion in float valves and change when necessary all as specified and directed for cooling tower of certain capacity existing at site. Note:- Cleaning done in every quaterly Basis and all site will be consider at one job.

M&L for dismantling and taking down of air handling unit from its original location by discconecting all electrical and mechanical connections and setting aside for repair, Scrapping and removing out old u/s rusted frame work for air cooling system installed at different location in air force station Jammu and cleaning and carry out denting as required, Supply and fix new Base frame all as per existing size, replacement of water tray of size 600mm x 1800mm and made up of angle Iron/GI sections and 18 Gauge GI Sheet, painting of base frame, Blower Motor, Blower Shaft, water tray with two coat of synthetic enameled paint over coat of red oxide primer, replacement of wiring and assembling and reinstalling back to Its original location after completion of work including testing complete all respect all as specified and directed by Engineer- incharge. Note:- (a) Cost of fabrication & Material required for replacemnt of base frame & water Tray deemed to be included in quoted rates. (b) The work shall be carried out by the authorized service representative of the OEM.

Supply & fixing in replacement of V belt of suitable size and make as on site and as specified and directed by Engineer-in-charge.

Supply and fixing in replacement microvee pre filter, 10 micron, box type of size 610x610x50mm & 580x580x50mm suitable for AHU of central AC plant complete all as specified and directed by Engr-in-Charge. Note:- Size of pre filter and hepa filter may varies 5 to 10 % in length and width. Contractor has advise to visit the site before execute the work.

Material and labour for replacement of flow switch of central AC plant of any capacity complete all as specified and directed by Engr-in-Charge. Note: The work shall be carried out by the representative of OEM.

M&L for replacement of nozzle set of sprinkler for existing cooling tower cap 113/75/100 TR and testing complete all as specified and directed by Engr-in-Charge.

Material and labour for replacement of suction pressure transducer in suction pipe of compressor of central AC plant of any capacity by pumping down/recovering of refrigerant gas from the compressor, fixing of HP switch charging recovered refrigerant gas and testing on completion complete all as specified and directed by Engr-in-Charge. Note: The work shall be carried out by the authorized representative of OEM.

Material and labour for replacement of high pressure switch in discharge pipe of compressor of central AC plant of any capacity by pumping down/recovering of refrigerant gas from the compressor and testing on complete all as specified and directed by Engr-in-Charge. Note: The work shall be carried out by the representative of OEM.

S&F compressor capacity of 12.5 ton and removing old unserviceable compressor including all fittings complete all as specified and directed by Engineer in Charge.

Material and labour for charging refrigerant gas R 407 in central AC plant complete all as specified and directed by Engineer in Charge.

M&L for charing refrigerant R-22 to Package Type AC Plant ccomplete all as specified and directed by Engr-in-Charge.

Material and Labour for replacement of complete PVC fills of cooling tower, of cap 33/34/75/104/113 TR with taking out PVC fills and making the cooling tower functional complete all as specified and directed by Engr-in-Charge.

Opening and taking out the front cover of hot water boiler of cap 100 KW and taking out the existing heating element from the boiler drum and refixing the same in old position after descaling the heating element and hot water boiler with suitable chemical and testing on complete all as specified and directed by Engr-in-Charge.

S&F in replacement of heating element 25 KW of existing model suitable for hot water boiler complete all as specified and directed by Engr-in-Charge.

S&F in replacement of heating element of 09 KW and model suitable for hot water boiler for heating system existing at site complete all as specified and directed by Engr-in-Charge.

Supply and fixing in replacement Heating strip 3 KW, 3 ft long as per existing at site complete all as specified and directed by Engr-in-Charge.

Supply and fixing in replacement heating strip 2 KW 2 ft long as per existing at site complete all as specified and directed by Engr-in-Charge.

Material and labour for repair of control panel of 34/33 TR package type AC Plant including necessary programming with existing system and cabling from plant to panel etc. and testing complete including making the plant functional complete all as specified and directed by Engr-in-Charge.

Material & labour for replacement of fan motor with blade of indoor unit of 8.5 TR AC Plant complete all as specified and directed by Engr-in-Charge.

Material and labour for replacement of liquid filter/ dryer core suitable for screw compressor of chiller unit 104/113 TR complete all as specified and directed by Engr-in-Charge.

Material and labour for maintenance/servicing of centrifugal/ monoblock pump set 3.5/5 HP capacity by means greasing, oiling, replacement of gland of suitable size to stop water leakage from pump set, replacement of coupling, flange and replacement of nuts, bolts etc as directed at site.

Material and labour for maintenance/servicing of centrifugal/ monoblock pump set7.5 HP capacity by means greasing, oiling, replacement of gland of suitable size to stop water leakage from pump set, replacement of coupling, flange and replacement of nuts, bolts etc complete all as specified and directed by Engr-in-Charge.

Material and labour for disconnecting the electric connections of the electric motor, dismantling the pump and motor from the foundation, taking out the old unserviceable winding wire, cleaning the slots for rewinding, rewinding the electric motor Make Siemens 3 Ph, 415 volts 7.5 HP with suitable size of super enamelled copper binding wire including replacement of suitable size bearings, including allied materials like cotton tapes, glass sleeves, varnishing and assembling the motor and coupling with pump and fixing on foudation complete all as specified and directed by Engr-in-Charge.

Material and labour for disconnecting the electric connections of the electric motor/monoblock pump dismantling from the pump foundation of AHU or from cooling tower and taking out the old unserviceable winding wire, cleaning the slots, rewinding the electric motor 3 Ph, 415 volts 5 HP with suitable size of super enamelled copper binding wire including replacement of suitable size bearings, including allied materials like cotton tapes, glass sleeves, varnishing and assembling the motor and coupling with pump and fixing on foudation or with AHU complete all as specified and directed by Engr-in-Charge.

Material and labour for disconnecting the electric connections of the electric motor, dismantling from the pump foundation of AHU or from cooling tower and taking out the old unserviceable winding wire, cleaning the slots, rewinding the electric motor 3 Ph, 415 volts 3.7 KW with suitable size of super enamelled copper binding wire including replacement of suitable size bearings, including allied materials like cotton tapes, glass sleeves, varnishing and assembling the motor and coupling with pump and fixing on foudation or with AHU complete all as specified and directed by Engr-in-Charge.

Supply and fixed in replacement of coupling set of motor-pump of different capacity 3.5 HP to 7.5 HP and its allingnment of its shaft in proper position for smoothly working complete all as specified and directed by Engr-in-Charge.

M&L for repair and restoring of humidity control system with replacement of burnt out pump along with motor and GI pipe of various size (15 to 40 mm) with replacement of humidity stat control switch making it functional with repair of heavy duty water tank and all necessary connection as required for smooth functioning of moisture and humidity control function all as specified and directed.

S&F in replacement of butterfly valves 50 mm dia complete all as specified and directed by Engr-in-Charge.

S&F in replacement of butterfly valves 80 mm dia complete all as specified and directed by Engr-in-Charge.

S&F in replacement of butterfly valves 100 mm dia complete all as specified and directed by Engr-in-Charge.

S&F in replacement of butterfly valves 150 mm dia complete all as specified and directed by Engr-in-Charge.

S&F butterfly valve size 20-40 mm fixed in existing pipe line of AC plant to open/close valve to regulate pressure complete all as specified and directed by Engr-in-Charge.

S&F in replacement MCCB 3 pole of capacity 25 to 100 Amps AC 415 Volts confirms to IS/IEC 60947-2, breaking capacity 16 KA, positive isolation, thermal magnetic release, adjustable overload 70-100%, adjustable short circuit 5-10 complete all as specified and directed by Engr-in-Charge.

S&F in replacement MCCB 3 pole of capacity 125 Amps AC 415 Volts confirms to IS/IEC 60947-2, breaking capacity 16 KA, positive isolation, thermal magnetic release, adjustable overload 70-100%, adjustable short circuit 5-10 complete all as specified and directed by Engr-in-Charge.

S&F in replacement MCCB 3 pole of capacity 160 Amps AC 415 Volts confirms to IS/IEC 60947-2, breaking capacity 16 KA, positive isolation, thermal magnetic release, adjustable overload 70-100%, adjustable short circuit 5-10 complete all as specified and directed by Engr-in-Charge.

S&F in replacement MCCB 3 pole of capacity 200 Amp AC 415 Volts confirms to IS/IEC 60947-2, breaking capacity 16 KA, positive isolation, thermal magnetic release, adjustable overload 70-100%, adjustable short circuit 5-10 complete all as specified and directed by Engr-in-Charge.

S&F in replacement MCCB 4 pole of capacity 250 Amp AC 415 Volts confirms to IS/IEC 60947-2, breaking capacity 16 KA, positive isolation, thermal magnetic release, adjustable overload 70-100%, adjustable short circuit 5-10 complete all as specified and directed by Engr-in-Charge.

S&F in replacement MCCB 4 pole of capacity 400 Amp AC 415 Volts confirms to IS/IEC 60947-2, breaking capacity 16 KA, positive isolation, thermal magnetic release, adjustable overload 70-100%, adjustable short circuit 5-10 icomplete all as specified and directed by Engr-in-Charge.

Dismantling and taking down existing duct of any size and type with insulation of any types complete all as specified and directed by Engr-in-Charge.

M&L for duct insulation with resin bonded fibre glass wool roll of density 24 Kg/Cum, with factory laminated aluminium vapour barrier, thickness of insulation 50mm as specified including the following: (a) M&L for cleaning the duct surface (to be insulated) by scraping carefully with wire brush etc. to make the surface completely free of millscale, dirt, dust, grease and other foreign care so that all ducts jpints are sealed against any leakage. (b) M&L for applying rubber based adhesive CPRX compound. (c) M&L for sealing of all longitudinal joints and circular overlaps with and including aluminium foil tape 50mm wide, to make the insulation leak proof. (d) M&L for securing the insulation with and including mechanical fastened nylon/steel straps of size 12 mm/50mm at maximum intervals of 1.2 mtrs.

Material and Labour for providing insulation of MS pipe with PUF slab 40 mm thick with and including applying bituminious compound and GI cladding with 26 gauge GI sheet complete for MS pipe of 100/150 mm bore, complete all as specified and directed by Engr-in-Charge.

Material and Labour for replacement of current transformer of cap 150/5 Amp, 5 VA, Class-1.0, complete all as specified and directed by Engr-in-Charge.

Material and Labour for replacement of contactor MNX A-2 3 pole complete all as specified and directed by Engr-in-Charge.

S&F in replacement MCB of cap 06-32Amp, single pole, 'C' series complete all as specified and directed by Engr-in-Charge.

Wiring for circuit/submain wiring alongwith earth wire with the sizes of 6sqmm two run for main and one run for earth of FR is PVC insulated copper conductor, single core cable in surface/recessed as required for heating element glass wiring of 6 Sqmm copper wire double core and one neutral complete all as specified and directed by Engr-in-Charge.

Wiring for circuit/submain wiring alongwith earth wire with the sizes of 4 sqmm two run for main and one run for earth FR is PVC insulated copper conductor, single core cable in surface/recessed as required for heating element glass wiring of 4 Sqmm copper wire double core and one neutral complete all as specified and directed by Engr-in-Charge.

Supply and fixing 415V 10KA 'C' curve miniature circuit breaker (MCB) TPN 40 Amp of following 4 poles and current carrying capacity in the DB complete with connection testing and commissioning all as specified and directed by Engr-in-Charge.

Supply and fix of MNX-32 power Contractor 32 Amp 3 pole and removing unserviceable complete all as speciified and directed.

Supply and fix of MNX-25 power Contractor 240 V AC, 3 pole and removing old unserviceable complete all as specified and directed.

Supply and fix of MNX-A2 ADDON Block power contractor and removing old unserviceble complete all as specified and directed.

Supply and fix of relays of 60-110 V capacity fixed in ac plant chiller panel/control panel existing at site and removing old U/S complete all as specified and directed by Engineer-in-charge.

S&F in replacement of single phase preventer complete all as specified and directed by Engr-in-Charge.

S&F in replacement MCB three pole of cap 25 Amp, 'C' series complete all as specified and directed by Engr-in-Charge.

S&F in replacement of push botton starter/stop assembly complete all as specified and directed by Engr-in-Charge..

S&F in replacement three phase ammeter digital type of size 96 X 96 mm of cap 0-20 Amp with suitable CTs ratio complete all as specified and directed by Engr-in-Charge.

S&F in replacement three phase ammeter digital type of size 96 X 96 mm of cap 0-40 Amp with suitable CTs ratio complete all as specified and directed by Engr-in-Charge.

S&F multifunction digital dry bulb or wet bulb thermometer up to 50 degree Celcius with backlight with USB interface incl ISO calibration certificate complete all as specified and directed by Engr-in-Charge.

S&F in replacement three phase ammeter digital type of size 96 X 96 mm of cap 0-100 Amp with suitable CTs ratio complete all as specified and directed by Engr-in-Charge.

S&F in replacement of pressure gauge analog type of measuring cap upto 150 Psi complete all as specified and directed.

S&F multifunction digital thermometer up to 50°C with backlight with USB interface incl ISO calibration certificate complete all as specified and directed by Engr-in-Charge.

M&L for old painted or treated / untreated iron pipes of size 100mm dia of AC plant condenser pipe and applying two coats of synthetic enamel paint (of existing colour and as directed) over a coat of red oxide zinc chrome primer complete all as specified and directed by Engr-in-Charge.

M&L for old painted or treated / untreated iron pipes of size 150mm dia of AC plant condenser and applying two coats of synthetic enamel paint (of existing colour and as directed) over a coat of red oxide zinc chrome primer complete all as specified and directed by Engr-in-Charge.

M&L for old painted or treated / untreated iron pipes of size 50mm dia of AC plant condenser and applying two coats of synthetic enamel paint (of existing colour and as directed) over a coat of red oxide zinc chrome primer complete all as specified and directed by Engr-in-Charge.

M&L for old painted or treated / untreated iron pipes of size 200 mm dia of AC plant condenser and applying two coats of synthetic enamel paint (of existing colour and as directed) over a coat of red oxide zinc chrome primer complete all as specified and directed by Engr-in-Charge.

Supply and fix in replacement of unserviceable flat three core PVC insulated and PVC sheathed industrial copper cable grade 1100 volts conforming to IS 694 of size 6 sqmm for pump motor in AC plant and AHU motors complete all as specified and directed by Engr-in-Charge.

Supply and fix in replacement of unserviceable flat three core PVC insulated and PVC sheathed industrial copper cable grade 1100 volts conforming to IS 694 of size 10 sqmm for pump motor in AC plant and AHU motors complete all as specified and directed by Engr-in-Charge.

Supply and fix in replacement of unserviceable flat three core PVC insulated and PVC sheathed industrial copper cable grade 1100 volts conforming to IS 694 of size 16 sqmm for pump motor in AC plant and AHU motors complete all as specified and directed by Engr-in-Charge.

Supply and fix in replacement of unserviceable flat three core PVC insulated and PVC sheathed industrial copper cable grade 1100 volts conforming to IS 694 of size 25 sqmm Cable for pump motor/panel in AC plant and AHU motors complete all as specified and directed by Engr-in-Charge.

Preventive maintenance & checking the AC Plant installed at UGBO in Technical area and Auditorium in domestic area of GE AF Jammu and 3003 SQN and I-Level and Alternate ATC through authorised agent of original equipment manufacturer including carrying out preventive maintenance and servicing as per Manufacturerer's manual on monthly basis and maintaining the record of every visit of each month in a register in prescence of concerned JE,countersigned by Engineer -in-charge.Repair and overhauling, Descaling of compressor, Cleaning of filters, cooling coils, Detecting and arresting of leakages of air/gas/lubricants/fuel etc, attending breakdown and rectification of all type of defects including electrical, electronic circuits & drives, mechanical and refrigeration/air conditioning including taking down unserviceable parts, spares as and when required for the following Plants all as specified and directed by Enginner-in-Charge: - (A) Location: Technical area and Domestic area under GE AF Jammu (a) Voltas make chiller,02x52 TR(Total 104 TR) Make-Voltas (b) Scroll chiller AC Plant,03x37.7 TR(Total 113.1 TR) Make: Blue star (c) Package Type AC Plant 34 TR Make : Blue Star (d) Package Type AC Plant 33 TR Make: Voltas (e) voltas make chiller ,03x25 TR(Total 75TR)

Monthly Services- 1.Noting the Suction & Discharge Pressures of the chiller and then finding out corresponding saturation temperatures.Validating the same with compressor envelop to understand the healthiness of the machine.Recommending/adopting corrective measures in case any anomaly is detected. 2.Monitoring suction and discharge superheats,to determine chances of liquid flood back to the compressor,if any.Troubleshooting,if necessary,to ensure that chiller runs within the permissible ranges of superheats. 3.Verifying liquid sub-cooling,to ascertain refrigerant shortage if any,and arrange for top-up,as necessary. 4.Checking the overall performance level of the chiller. 5.Examining the control system of chiller,its safety functions of low oil level,low oil pressure differential,caliberation of all pressure and temperature sensor values with caliberated instruments,chilled/cooling water flow switches.Verifying all settings in the controller. 6. The work shall be carried out by the authorized service representative of the OEM.

Supply and fix in repair/replacement of thermostatic expansion valve by devacuumising of compressor unit,Gas cutting of u/s expansion valve,brazing of new expansion valve to same position including nitrogen testing and making it in serviceable condition by top up of refrigerant required complete all as specified and directed by Engr-in-Charge. Note-Refrigerant required will be supplied,measured and paid separately.

ARORA ENTERPRISES (BID ID -3472056)

Pyramid constructions (BID ID -3467041)

CITY TOP ELECTRICAL WORKS (BID ID -3471730)